Patent Application
20240009204
The subject matter described herein relates to pharmaceutical compositions that include olanzapine and oleic acid, as well as methods of treatment for vomiting (emesis) and nausea with olanzapine.
Olanzapine (2-methyl-10-(4-methyl-1-piperazinyl)-4H-thieno-[2,3-b][1.5]benzo-diazepine), which has a chemical structure shown below, is an antipsychotic medication used to treat schizophrenia and bipolar disorder. It is usually classed with the atypical antipsychotics, a newer generation of antipsychotics. It has been approved by the FDA in tablet form under the brand name ZYPREXA® for treatment of schizophrenia and bipolar mania. Olanzapine has also been investigated for use as an antiemetic at oral doses of 10 mg and 5 mg a day to treat nausea and vomiting after administration of the chemotherapeutic cisplatin.
Due to side effects, such as fatigue and sedation, associated with the administration of olanzapine, it is important to identify a minimum effective dose of olanzapine in treating nausea and vomiting.
Further, delivery systems have been used for the transdermal administration of olanzapine. Because olanzapine does not readily penetrate the skin, it is important for transdermal delivery systems that the transdermal flux be as high as possible so that the patch size or external dose be as small as possible. One of the drawbacks associated with the existing transdermal delivery systems, such as transdermal patch, is cold flow. Cold flow is not desired because it reflects the tendency of a solid material to move or deform under mechanical stress. There is a need in the art for improved compositions, devices, patches, systems, methods for transdermal delivery of olanzapine, and uses thereof, which can reduce the undesired cold flow. It is critical that steps taken to reduce cold flow do not reduce the transdermal flux and the delivery of olanzapine.
The following aspects and embodiments thereof described and illustrated below are meant to be exemplary and illustrative, not limiting in scope.
In one aspect, a kit is provided. The kit includes a transdermal composition that includes olanzapine, oleic acid, a cellulose or derivative thereof, a pressure sensitive adhesive, and one or more of a fatty acid, a fatty alcohol and a fatty ester; and instructions to apply a site preparation agent to a surface of skin prior to applying the composition to the surface of skin.
In another aspect, the site preparation agent can include water, an alcohol, dimethyl sulfoxide, n-methyl-2-pyrrolidone, 2-pyrrolidone, a glycol or a derivative thereof, a dipropylene glycol methyl ether, a butyl ester of a copolymer of methyl vinyl ether and maleic anhydride or maleic acid, salicylic acid, or a combination thereof.
In one aspect, the cellulose or derivative can be selected from cellulose esters, cellulose ethers, and nitrocellulose.
In another aspect, the cellulose or derivative thereof can be selected from cellulose acetate butyrate (CAB), cellulose acetate propionate (CAP), cellulose acetate (CAC), ethylcellulose (EC), methylcellulose (MC), hydroxyethylcellulose (HEC), hydroxypropylcellulose (HPC), hydroxypropylmethylcellulose (HPMC), and carboxymethylcellulose (CMC).
In one aspect, the pressure sensitive adhesive can include an acrylate copolymer.
In another aspect, the olanzapine and the oleic acid can form an association complex via proton transfer.
In still another aspect, the transdermal composition can further include an emulsifier or a penetration enhancer.
In one aspect, the emulsifier is a glycerol ester. Further, the glycerol ester can be selected from glycerol monooleate, glyceryl monotallate, and glyceryl trioleate.
In addition, the penetration enhancer can be selected from dimethyl sulfoxide and n-dodecylcaprolactam (Azone).
In another aspect, the molar amount of olanzapine can correspond to a therapeutically effective amount. Further, the therapeutically effective amount can be between about 2-50 mg olanzapine per day.
In still another aspect, the molar amount of olanzapine can be selected to deliver between 1 mg and 20 mg olanzapine in 24 hours.
In one aspect, the molar ratio of oleic acid to olanzapine can be between about 0.5:1 to 5:1.
In another aspect, the transdermal composition can include a fatty ester. Further, the fatty ester can be isopropyl palmitate.
In yet another aspect, the transdermal composition can further include polyvinylpyrrolidone.
In one aspect, the transdermal composition can further include silicone dioxide.
In another aspect, the kit can include the site preparation agent.
In still another aspect, an average flux rate of about 4.5 μg/cm2/hr to about 6 μg/cm2/hr of the olanzapine can be achieved after about 162 hours.
In one more aspect, a level of cumulative permeation of the olanzapine can range from about 875 μg/cm2 to about 1300 μg/cm2 after about 162 hours.
In yet another aspect, the olanzapine can be present in an amount of between about 5 wt % and about 20 wt % based on the total weight of the transdermal composition; the oleic acid can be present in an amount between about 8 wt % and about 25 wt % based on the total weight of the transdermal composition; the cellulose or derivative thereof can be present in an amount of between about 5 wt % and about 20 wt % based on the total weight of the transdermal composition; the pressure sensitive adhesive can be present in an amount of at least about 40 wt % based on the total weight of the transdermal composition; and the one or more of the fatty acid, the fatty alcohol, and the fatty ester can be present in an amount between about 3 wt % and about 15 wt % based on the total weight of the transdermal composition.
In another aspect, a method of treating nausea and/or vomiting in a subject in need thereof is provided. The method includes applying a site preparation agent to a surface of skin; and applying or instructing one to apply a transdermal composition to the subject via the surface of skin, wherein the transdermal composition comprises olanzapine, oleic acid, a cellulose or derivative thereof, a pressure sensitive adhesive, and one or more of a fatty acid, a fatty alcohol and a fatty ester.
In one aspect, the site preparation agent can include water, an alcohol, dimethyl sulfoxide, n-methyl-2-pyrrolidone, 2-pyrrolidone, a glycol or a derivative thereof, a dipropylene glycol methyl ether, a butyl ester of a copolymer of methyl vinyl ether and maleic anhydride or maleic acid, salicylic acid, or a combination thereof.
In another aspect, the cellulose or derivative can be selected from cellulose esters, cellulose ethers, and nitrocellulose. Further, the cellulose or derivative thereof can be selected from cellulose acetate butyrate (CAB), cellulose acetate propionate (CAP), cellulose acetate (CAc), ethylcellulose (EC), methylcellulose (MC), hydroxyethylcellulose (HEC), hydroxypropylcellulose (HPC), hydroxypropylmethylcellulose (HPMC), and carboxymethylcellulose (CMC).
In one aspect, the pressure sensitive adhesive can include an acrylate copolymer.
In one more aspect, the olanzapine and the oleic acid can form an association complex via proton transfer.
In yet another aspect, the transdermal composition can include an emulsifier or a penetration enhancer.
In an additional aspect, the molar amount of olanzapine can correspond to a therapeutically effective amount.
In still another aspect, the molar ratio of oleic acid to olanzapine can be between about 0.5:1 to 5:1.
In one aspect, the adhesive matrix can include a fatty ester. Further, the fatty ester can be isopropyl palmitate.
In one more aspect, the transdermal composition can further include a polyvinylpyrrolidone.
In another aspect, an average flux rate of about 4.5 μg/cm2/hr to about 6 μg/cm2/hr of the olanzapine can be achieved after about 162 hours.
In an additional aspect, a level of cumulative permeation of the olanzapine can range from about 875 μg/cm2 to about 1300 μg/cm2 after about 162 hours.
In one aspect, the olanzapine can be present in an amount of between about 5 wt % and about 20 wt % based on the total weight of the transdermal composition; the oleic acid can be present in an amount between about 8 wt % and about 25 wt % based on the total weight of the transdermal composition; the cellulose or derivative thereof can be present in an amount of between about 5 wt % and about 20 wt % based on the total weight of the transdermal composition; the pressure sensitive adhesive can be present in an amount of at least about 40 wt % based on the total weight of the transdermal composition; and the one or more of the fatty acid, the fatty alcohol, and the fatty ester can be present in an amount between about 3 wt % and about 15 wt % based on the total weight of the transdermal composition.
In another aspect, the site preparation agent can be allowed to dry prior to apply the transdermal composition to the surface of skin.
In still another aspect, about 0.025 milliliters to about 1.5 milliliters of the site preparation agent can be applied to the surface of skin.
In yet another aspect, the site preparation agent can be applied to the surface of skin in dropwise fashion or via a wipe.
In one aspect, the method can further include removing excess site preparation agent from the surface of skin prior to applying or instructing one to apply the transdermal composition to the subject via the surface of skin.
In another aspect, a composition for transdermal delivery is provided. The composition comprises an adhesive matrix which comprises olanzapine, oleic acid, a cellulose or derivative thereof, and one or more of a fatty acid, a fatty alcohol and a fatty ester.
In another aspect, a composition for transdermal delivery is provided. The composition comprises an adhesive, olanzapine, oleic acid, a cellulose or derivative thereof, and one or more of a fatty acid, a fatty alcohol and a fatty ester.
In one embodiment, the adhesive matrix or composition does not comprise another acid (organic or inorganic acid, which is not a polymer or oligomer) which has a pKa lower than that of oleic acid. Such another acid includes acetic acid and trifluoroacetic acid.
In one embodiment, the adhesive matrix or composition does not comprise a fatty alcohol. In one embodiment, the adhesive matrix or composition does not comprise a fatty acid. In one embodiment, the adhesive matrix or composition does not comprise an alkyl diol.
In one embodiment, the olanzapine and the oleic acid form an association complex via proton transfer.
In one embodiment, the adhesive matrix or composition further comprises an emulsifier or a penetration enhancer.
In one embodiment, the emulsifier is a glycerol ester.
In one embodiment, the glycerol ester is selected from the group consisting of glycerol monooleate (GMO), glyceryl monotallate, and glyceryl trioleate.
In one embodiment, the penetration enhancer is selected from dimethyl sulfoxide and n-dodecylcaprolactam (Azone).
In one embodiment, the molar amount of olanzapine corresponds to a therapeutically effective amount.
In one embodiment, the therapeutically effective amount is between about 2-50 mg olanzapine/day.
In one embodiment, the molar amount of olanzapine is selected to deliver between 1-20 such as 1-12 mg olanzapine in 24 hours when the composition is applied to skin.
In one embodiment, the molar ratio of oleic acid to olanzapine is between about 0.5:1 to 5:1 such as 1:1 to 3:1.
In one embodiment, the molar ratio of oleic acid to olanzapine is between about 1:1 to 3:1.
In one embodiment, the molar ratio of oleic acid to olanzapine is between about 1:1 to 2.7:1.
In one embodiment, the molar ratio of oleic acid to olanzapine is between about 1.2:1 to 2.6:1.
In one embodiment, the adhesive matrix or composition comprises a fatty ester. In one embodiment, the adhesive matrix or composition comprises fatty alcohol and a fatty ester.
In one embodiment, the fatty alcohol is myristyl alcohol.
In one embodiment, the fatty ester is isopropyl palmitate.
In one embodiment, the adhesive matrix or composition comprises a polyvinylpyrrolidone.
In one embodiment, the polyvinylpyrrolidone is selected from a cross-linked polyvinylpyrrolidone and a copolymer of polyvinylpyrrolidone.
In one embodiment, the copolymer of polyvinylpyrrolidone is a vinylpyrrolidone-vinyl acetate copolymer.
In one embodiment, the adhesive matrix or composition comprises silicone dioxide.
In one embodiment, the cellulose or derivative thereof in the adhesive matrix or composition is selected from cellulose esters, cellulose ethers, and nitrocellulose. In one embodiment, the cellulose or derivative thereof in the adhesive matrix or composition is selected from cellulose acetate butyrate (CAB), cellulose acetate propionate (CAP), cellulose acetate (CAc). ethylcellulose (EC), methylcellulose (MC), hydroxyethylcellulose (HEC), hydroxypropylcellulose (HPC), hydroxypropylmethylcellulose (HPMC), and carboxymethylcellulose (CMC).
In one embodiment, the cellulose or derivative thereof in the adhesive matrix or composition has an average molecular weight of greater than 120,000.
In one embodiment, the cellulose or derivative thereof in the adhesive matrix or composition comprises ethyl cellulose.
In one embodiment, the adhesive matrix or adhesive further comprises a pressure-sensitive adhesive.
In one embodiment, the pressure-sensitive adhesive is an acrylate copolymer.
In another aspect, a composition for transdermal delivery is provided. The composition comprises (i) at least about 40 wt % of a pressure-sensitive adhesive; (ii) between about 3-15 wt % of a fatty acid ester; (iii) between about 1-20 wt % such as 5-20 wt % olanzapine; (iv) between about 5-wt % cellulose or derivative thereof, and (v) between about 8-25 wt % oleic acid; and wherein the amount of olanzapine is sufficient to deliver between 1-20 mg such as 1-12 mg olanzapine in 24 hours when the composition is applied to skin.
In one embodiment, the pressure-sensitive adhesive is an acrylate copolymer.
In one embodiment, the fatty acid ester is isopropyl palmitate.
In one embodiment, the molar ratio of oleic acid to olanzapine is between about 1.2:1 to 2.7:1.
In one embodiment, the composition further comprises one or more of a polyvinylpyrrolidone, GMO, and silicone dioxide.
In one embodiment, the cellulose or derivative thereof in the composition is selected from cellulose esters, cellulose ethers, and nitrocellulose. In one embodiment, the cellulose or derivative thereof in the composition is selected from cellulose acetate butyrate (CAB), cellulose acetate propionate (CAP), cellulose acetate (CAc), ethylcellulose (EC), methylcellulose (MC), hydroxyethylcellulose (HEC), hydroxypropylcellulose (HPC), hydroxypropylmethylcellulose (HPMC), and carboxymethylcellulose (CMC).
In one embodiment, the cellulose or derivative thereof in the composition has an average molecular weight of greater than 120,000.
In one embodiment, the cellulose or derivative thereof in the composition comprises ethyl cellulose.
In another aspect, a composition for transdermal delivery is provided. The composition consists essentially of (i) at least about 40 wt % of a pressure-sensitive adhesive; (ii) optionally, between about 0.1-25% such as 3-10 wt % of a polyvinylpyrrolidone or silicon dioxide or stabilizing agents; (iii) between about 3-15 wt % of isopropyl palmitate; (iv) between about 6-15 wt % olanzapine; (v) between about 5-20 wt % cellulose or derivative thereof, and (vi) between about 8-20 wt % oleic acid; and wherein the amount of olanzapine is sufficient to deliver between 1-mg such as 1-12 mg olanzapine in 24 hours when the composition is applied to skin.
In one embodiment, the cellulose or derivative thereof in the composition is selected from cellulose esters, cellulose ethers, and nitrocellulose. In one embodiment, the cellulose or derivative thereof in the composition is selected from cellulose acetate butyrate (CAB), cellulose acetate propionate (CAP), cellulose acetate (CAc), ethylcellulose (EC), methylcellulose (MC), hydroxyethylcellulose (HEC), hydroxypropylcellulose (HPC), hydroxypropylmethylcellulose (HPMC), and carboxymethylcellulose (CMC).
In one embodiment, the cellulose or derivative thereof in the composition has an average molecular weight of greater than 120,000.
In one embodiment, the cellulose or derivative thereof in the composition comprises ethyl cellulose.
In another aspect, a transdermal device comprises any of the composition described herein.
In another aspect, a transdermal device for systemic delivery of olanzapine is provided. The transdermal device comprises a drug matrix comprising an acrylate polymer adhesive, a fatty ester, oleic acid, a cellulose or derivative thereof, and olanzapine, and wherein the transdermal device when applied to skin delivers (i) an amount of olanzapine effective to alleviate nausea, vomiting, or both within a first period of between about 4-8 hours and (ii) an amount of olanzapine to alleviate nausea, vomiting or both for at least a sustained period of between about 1-7 days.
In one embodiment, the transdermal device when applied to (human cadaver) skin in vitro has an average flux during the sustained period of about 1-20 μg/cm2/hr such as about 4 μg/cm2/hr.
In one embodiment, the sustained period is between about 1-7 days or between 2-7 days or between 2-5 days.
In one embodiment, the amount of olanzapine delivered in the first period and the sustained period is at least about 3 mg per day.
In one embodiment, the amount of olanzapine delivered in the first period and the sustained period is between about 1-20 such as 3-6 mg per day.
In one embodiment, the drug matrix comprises between about 1-20 wt % such as 5-20 wt % olanzapine.
In another aspect, a transdermal device for delivery of olanzapine is provided. The transdermal device comprises a drug matrix comprising an acrylate polymer adhesive, a fatty ester, oleic acid, a cellulose or derivative thereof, and olanzapine, and wherein the transdermal device when applied to skin in vitro has a flux profile where (i) a maximum flux rate is achieved within about 36-54 hours, (ii) between about 65-80% of the maximum flux rate is achieved within about 18-36 hours, and (iii) an average flux rate of about 1-20 μg/cm2/hr such as about 3 μg/cm2/hr for a period of between about 1-7 days is achieved.
In one embodiment, the average flux rate is for a period of between about 1-7 or 1-3 or 1-5 days.
In one embodiment, the flux profile provides over the period an amount of olanzapine effective to alleviate nausea, vomiting, or both.
In one embodiment of the transdermal device, the olanzapine and the oleic acid form an association complex via proton transfer.
In one embodiment of the transdermal device, the drug matrix further comprises an emulsifier or a penetration enhancer.
In one embodiment of the transdermal device, the emulsifier is a glycerol ester.
In one embodiment of the transdermal device, the glycerol ester is selected from the group consisting of glycerol monooleate, glyceryl monotallate, and glyceryl trioleate.
In one embodiment of the transdermal device, the drug matrix further comprises a fatty alcohol such as myristyl alcohol.
In one embodiment of the transdermal device, the penetration enhancer is selected from dimethyl sulfoxide and n-dodecylcaprolactam (Azone).
In one embodiment of the transdermal device, the molar amount of olanzapine corresponds to a therapeutically effective amount.
In one embodiment of the transdermal device, the therapeutically effective amount is between about 2-50 mg olanzapine/day.
In one embodiment of the transdermal device, the molar amount of olanzapine is selected to deliver between 1-20 such as 1-12 mg olanzapine in 24 hours when the composition is applied to skin.
In one embodiment of the transdermal device, the molar ratio of oleic acid to olanzapine is between about 0.5:1 to 5:1 such as 1:1 to 3:1.
In one embodiment of the transdermal device, the molar ratio of oleic acid to olanzapine is between about 1:1 to 3:1.
In one embodiment of the transdermal device, the molar ratio of oleic acid to olanzapine is between about 1:1 to 2.7:1.
In one embodiment of the transdermal device, the molar ratio of oleic acid to olanzapine is between about 1.2:1 to 2.6:1.
In one embodiment of the transdermal device, the fatty ester is isopropyl palmitate.
In one embodiment of the transdermal device, the drug matrix further comprises a polyvinylpyrrolidone.
In one embodiment of the transdermal device, the polyvinylpyrrolidone is selected from a cross-linked polyvinylpyrrolidone and a copolymer of polyvinylpyrrolidone.
In one embodiment of the transdermal device, the copolymer of polyvinylpyrrolidone is a vinylpyrrolidone-vinyl acetate copolymer.
In one embodiment of the transdermal device, the drug matrix further comprises silicone dioxide.
In one embodiment of the transdermal device, the cellulose or derivative thereof in the drug matrix is selected from cellulose esters, cellulose ethers, and nitrocellulose. In one embodiment, the cellulose or derivative thereof in the drug matrix is selected from cellulose acetate butyrate (CAB), cellulose acetate propionate (CAP), cellulose acetate (CAc), ethylcellulose (EC), methylcellulose (MC), hydroxyethylcellulose (HEC), hydroxypropylcellulose (HPC), hydroxypropylmethylcellulose (HPMC), and carboxymethylcellulose (CMC).
In one embodiment, the cellulose or derivative thereof in the drug matrix has an average molecular weight of greater than 120,000.
In one embodiment of the transdermal device, the cellulose or derivative thereof in the drug matrix comprises ethyl cellulose.
In one embodiment of the transdermal device, the drug matrix further comprises butylated hydroxy toluene (BHT).
In another aspect, a method of treating nausea and/or vomiting in a subject in need thereof is provided. The method comprises transdermally administering olanzapine to the subject in a dose ranging from 1 to 20 mg such as from 2.0 mg to 6.0 mg daily. The dose can be ascertained as “apparent daily dose”, which as used in this application refers to the difference between the drug load on the transdermal device before the administration and the residual drug on the transdermal device obtained after termination of the administration divided by the days of the transdermal device applied to the subject.
In another aspect, a method of treating nausea and/or vomiting in a subject in need thereof is provided. The method comprises transdermally administering olanzapine to the subject, wherein the method achieves an AUC of olanzapine ranging from 1000 to 2500 μg/L/h. As used herein, AUC can refer to AUC0-168hrs.
In another aspect, a method of treating nausea and/or vomiting in a subject in need thereof is provided. The method comprises transdermally administering olanzapine to the subject, wherein the method achieves an average blood concentration ranging from 1 to 20 μg/L such as from 5 to 20 μg/L.
In another aspect, a method of treating nausea and/or vomiting in a subject in need thereof is provided. The method comprises transdermally administering olanzapine to the subject, wherein the method achieves an AUC of olanzapine of between 20% and 80% of the AUC obtained from a standard of care treatment.
In each of the preceding aspect, the olanzapine is administered in the form of a composition or transdermal device as disclosed herein.
In some embodiments of each of the preceding aspect, the nausea and/or vomiting is induced by chemotherapy or a PARP inhibitor, wherein the chemotherapy or PARP inhibitor can be administered before, after, or at the same time as olanzapine is administered.
In one aspect, a method for reducing emesis in a subject in need thereof is provided. The method comprises administering or instructing to administer olanzapine to the subject in an amount greater than about 4 mg and less than about 8 mg.
In another aspect, a method for attenuating frequency of vomiting (emesis) in a subject in need thereof is provided. The method comprises administering or instructing to administer olanzapine to the subject in an amount greater than about 4 mg and less than about 8 mg.
In another aspect, a method for attenuating intensity of vomiting (emesis) in a subject in need thereof is provided. The method comprises administering or instructing to administer olanzapine to the subject in an amount greater than about 4 mg and less than about 8 mg.
In each of the preceding aspects, the amount of olanzapine that is greater than about 4 mg and less than about 8 mg refers to daily amount.
In another aspect, a method of ameliorating nausea in a subject in need thereof is provided. The method comprises administering or instructing to administer olanzapine to the subject in an amount greater than about 2 mg and less than about 6 mg.
In another aspect, a method of reducing frequency of nausea in a subject in need thereof is provided. The method comprises administering or instructing to administer olanzapine to the subject in an amount greater than about 2 mg and less than about 6 mg.
In another aspect, a method of attenuating intensity of nausea in a subject in need thereof is provided. The method comprises administering or instructing to administer olanzapine to the subject in an amount greater than about 2 mg and less than about 6 mg.
In another aspect, a method for reducing frequency of nausea and for attenuating intensity of nausea in a subject in need thereof is provided. The method comprises administering or instructing to administer olanzapine to the subject in an amount greater than about 2 mg and less than about 6 mg.
In another aspect, a method of treating nausea in a subject in need thereof is provided. The method comprises administering or instructing to administer olanzapine to the subject in an amount greater than about 2 mg and less than about 6 mg.
In each of the preceding aspects, the amount of olanzapine that is greater than about 2 mg and less than about 6 mg refers to daily amount.
In another aspect, a method of preventing nausea and/or vomiting associated with chemotherapy in a subject in need thereof is provided. The method comprises administering or instructing to administer olanzapine in an amount greater than about 2 mg and less than about 8 mg, wherein sedation resulting from said administering is essentially unchanged relative to an olanzapine oral dose of about 2 mg.
In another aspect, a method to reduce nausea and/or vomiting associated with chemotherapy in a subject in need thereof is provided. The method comprises administering or instructing to administer olanzapine in an amount greater than about 2 mg and less than about 8 mg, wherein sedation resulting from said administering is essentially unchanged relative to an olanzapine oral dose of about 2 mg.
In each of the preceding aspects, the amount of olanzapine that is greater than about 2 mg and less than about 8 mg refers to daily amount.
In another aspect, a method of treating nausea and/or vomiting induced by a PARP-inhibitor in a subject in need thereof is provided. The method comprises administering a therapeutic effective amount of a PARP-inhibitor to the subject in need thereof, administering or instructing to administer olanzapine to the subject in a daily amount greater than about 2 mg and less than about 8 mg, greater than about 4 mg and less than about 8 mg, or greater than about 2 mg and less than about 6 mg, wherein administering the PARP-inhibitor and olanzapine are performed as part of a common administration scheme. In further embodiments, the common administration scheme is characterized by administering olanzapine about 1 to about 24 hours before administration of the PARP-inhibitor. In other embodiments, the common administration scheme is characterized by co-administering olanzapine and the PARP-inhibitor within a window of time of 1 hour or less.
Various aspects now will be described more fully hereinafter. Such aspects may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey its scope to those skilled in the art.
Compositions, devices, and methods described herein are not limited to the specific polymers, excipients, cross-linking agents, additives, manufacturing processes, or adhesive products described herein. It will be understood that the particular terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting.
Where a range of values is provided, it is intended that each intervening value between the upper and lower limit of that range and any other stated or intervening value in that stated range is encompassed within the disclosure. For example, if a range of 1 μm to 8 μm is stated, it is intended that 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, and 7 μm are also explicitly disclosed, as well as the range of values greater than or equal to 1 μm and the range of values less than or equal to 8 μm.
The singular forms “a,” “an,” and “the” include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to a “polymer” includes a single polymer as well as two or more of the same or different polymers, reference to a “solvent” includes a single solvent as well as two or more of the same or different solvents, and the like.
The term “fatty acid” refers to a compound with the formula RCOOH, wherein R is C1-30 alkyl (hydrocarbon) or C3-30 alkenyl comprising one, two, three, or four double bonds excluding oleic acid. Exemplary fatty acids include, without limitation, capric acid, lauric acid, palmitic acid, stearic acid, elaidic acid (C18:1), gondoic acid (C20:1), erucic acid (C22:1), nervonic acid (C24:1), and ximenic acid (C26:1), hexadecatrienoic acid (16:3), linoleic acid (C18:2), alpha-linolenic acid (C18:3), gamma-linolenic acid (C18:3), calendic acid (C18:3), stearidonic acid (C18:4) mead acid (C20:3), eicosadienoic acid (C20:3), eicosatrienoic acid (C20:3), dihomo-gamma-linolenic acid (C20:3), arachidonic acid (C20:4), and docosadienoic acid (C22:2).
The term “fatty alcohol” refers to a compound with the formula ROH, wherein R is C2-30 alkyl or C3-30 alkenyl comprising one, two, three, or four double bonds.
The term “fatty ester” refers to an ester result from the combination of fatty acid with an alcohol, wherein the fatty acid and alcohol is a compound with the formula RCOOH and R(OH)1-3, respectively, wherein R is C1-30 alkyl or C3-30 alkenyl comprising one, two, three, or four double bonds.
The term “alkyl diol” refers to a compound with a formula R(OH)2, wherein R is C2-30 alkyl (hydrocarbon) or C3-30 alkenyl comprising one, two, three, or four double bonds, and the two OH are attached to two adjacent carbons, respectively.
The term “active agent” as used herein refers to a chemical material or compound suitable for topical or transdermal administration and that induces a desired effect. The terms include agents that are therapeutically effective, prophylactically effective, and cosmetically effective agents. The terms “active agent,” “drug,” and “therapeutic agent” are used interchangeably herein.
An “adhesive matrix” as described herein includes matrices made in one piece, for example, matrices made via solvent casting or extrusion as well as matrices formed in two or more portions that are then pressed or joined together.
A “cellulose or derivative thereof” as used herein refers to cellulose esters or cellulose ethers. Exemplary cellulose esters include cellulose acetate butyrate (CAB), cellulose acetate propionate (CAP), cellulose acetate (CAc). Exemplary cellulose ethers include ethylcellulose (EC) as named above, methylcellulose (MC), hydroxyethylcellulose (HEC), hydroxypropylcellulose (HPC), hydroxypropylmethylcellulose (HPMC), carboxymethylcellulose (CMC), and derivatives thereof. The “cellulose or derivative thereof” may also include nitrocellulose (NC), collodion, or referred to as cellulose nitrate.
Specific examples of cellulose or derivative thereof may include Hydroxypropyl methylcellulose (HPMC)—Klucel®, Hydroxypropyl methylcellulose acetate succinate (HPMCAC)—AquaSolve®, Ethylcellulose—Aqualon® and Ashland® EC grades, Hydroxyethyl cellulose (HEC)—Natrosol®, Ethylcellulose—Ethocel® grades, and Hydroxypropyl methylcellulose (HPMC)—Methocel®.
“PARP” as used herein refers to a group of poly (ADP-ribose) polymerase enzymes (PARP). PARP enzymes are activated by DNA damage, in particular, PARP1 and PARP2 enzymes. These enzymes facilitate DNA repair in pathways involving single-strand breaks (SSBs) and base excision repair (BER). All PARP-inhibitors are generally believed to inhibit both PARP1 and PARP2. The suppression of PARP catalytic activity prevents the formation of poly (ADP-ribose) polymers and blocks the binding of NAD+ at the site of DNA damage, ultimately compromising a cell's ability to overcome DNA-dependent damage.
“PARP-inhibitor” as used herein refers to a chemical compound that blocks an enzyme in cells called poly (ADP-ribose) polymerase (PARP). PARP enzymes help repair DNA upon damage. DNA damage may be caused by various things, including exposure to UV light, radiation, certain anticancer drugs, or other substances in the environment. Many PARP-inhibitors share certain structural commonalities, and typically include a benzamide moiety, or a benzamide-derivative moiety, and find use as chemotherapeutic agents directed at targeting cancers with defective DNA-damage repair. Blocking PARP keeps cancer cells from repairing their damaged DNA, thus causing them to die.
Examples of PARP inhibitors include olaparib (AZD-2281, Lynparza® by Astra Zeneca), e.g. for breast, ovarian, colorectal or prostate cancer, rucaparib (PF-01367338, Rubraca® by Clovis Oncology), e.g. for metastatic breast and ovarian cancer, niraparib (MK-4827, Zejula® by Tesaro), e.g. for epithelial ovarian, fallopian tube, and primary peritoneal cancer, talazoparib (BMN-673, originally developed by BioMarin Pharmaceutical Inc., currently in development by Pfizer), e.g. for advanced hematological malignancies and for advanced or recurrent solid tumors and for metastatic germline BRCA mutated breast cancer, veliparib (ABT-888, developed by AbbVie), e.g. for advanced ovarian cancer, triple-negative breast cancer, non-small cell lung cancer (NSCLC), and metastatic melanoma, CEP 9722 for non-small-cell lung cancer (NSCLC), E7016 (developed by Eisai), e.g. for melanoma, BGB-290, iniparib, 3-aminobenzamide (3-AB, a prototypical PARP inhibitor), PJ-34, Nu1085, INO-1001, CEP-8933/CEP-9722, and nicotinamide.
The term “skin” as used herein refers to skin or mucosal tissue, including the interior surface of body cavities that have a mucosal lining. The term “skin” should be interpreted as including “mucosal tissue” and vice versa.
The term “therapeutically effective amount” as used herein refers to the amount of an active agent that is nontoxic but sufficient to provide the desired therapeutic effect. The amount that is “effective” will vary from subject to subject, depending on the age and general condition of the individual, the particular active agent or agents, and the like as known to those skilled in the art.
The terms “transdermal” or “transdermal delivery” as used herein refer to administration of an active agent to a body surface of an individual so that the agent passes through the body surface (e.g., through the skin) and into the individual's blood stream. The term “transdermal” is intended to include transmucosal administration, i.e., administration of a drug to the mucosal (e.g., sublingual, buccal, vaginal, rectal, etc.) surface of an individual so that the agent passes through the mucosal tissue and into the individual's blood stream.
Olanzapine is an antipsychotic medication used to treat schizophrenia and bipolar disorder. It is usually classed with the atypical antipsychotics, a newer generation of antipsychotics. Olanzapine has also been investigated for use as an antiemetic at oral doses of 10 mg and 5 mg a day, generally in combination with one or more further agents, e.g., to treat nausea and vomiting after administration of the chemotherapeutic cisplatin.
Methods of treating vomiting (emesis) and/or nausea by administration of or instruction to administering olanzapine are described below.
In one aspect, the method comprises transdermally administering or instructing to transdermally administer olanzapine to the subject in a dose ranging from 1 to 20 mg such as 2.0 mg to 6.0 mg daily. The transdermal dose can be ascertained as “apparent daily dose”, which as used in this application refers to the difference between the drug load on the transdermal device before the administration and the residual drug on the transdermal device obtained after the administration divided by the days of the transdermal device applied to the subject. In some embodiments, the apparent dose can be from 3.0 to 5.1 mg, 3.1 to 5.0 mg, 2.5, 2.6, 2.7, 2.8, 2.9, 3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4.0, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, 4.8, 4.9, 5.0, 5.1, 5.2, 5.3, 5.4, 5.5, 5.6, 5.7, 5.9, or 6.0 mg daily.
In another aspect, the method comprises transdermally administering or instructing to transdermally administer olanzapine to the subject, wherein the method achieves an AUC of olanzapine ranging from 1000 to 2500 μg/L/h. In some embodiments, the AUC of olanzapine is from 1200 to 2200 μg/L/h, 1400 to 2200 μg/L/h, 1200, 1250, 1300, 1350, 1400, 1450, 1500, 1550, 1600, 1650, 1700, 1750, 1800, 1850, 1900, 1950, 2000, 2050, 2100, 2150, or 2200 μg/L/h.
In another aspect, the method comprises transdermally administering or instructing to transdermally administer olanzapine to the subject, wherein the method achieves an average blood concentration ranging from 1 to 20 μg/L such as from 5 to 20 μg/L. In some embodiments, the average blood concentration ranges from 5 to 15 μg/L, 8 to 15 μg/L, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, or 16 μg/L.
In another aspect, the method comprises transdermally administering or instructing to transdermally administering olanzapine to the subject, wherein the method achieves an AUC of olanzapine of between 20% and 80% of the AUC obtained from a standard of care treatment. In some embodiments, the AUC ranges from 25% to 70%, 25% to 60%, or 25% to 50%.
In some embodiments of each of the preceding aspects, the subject is less hungry and sedated than a subject undergoing a standard of care of treatment. As used herein, the standard of care treatment comprises daily oral dose of 5 or 10 mg of olanzapine.
In some embodiments of each of the preceding aspect, the nausea and/or vomiting is induced by chemotherapy or a PARP inhibitor, wherein the chemotherapy or PARP inhibitor can be administered before, after, or at the same time as olanzapine is administered.
In some embodiments, olanzapine is administered about 1 to about 24 hours before administration of the PARP-inhibitor. In some embodiments, olanzapine and the PARP-inhibitor are administered within a window of time of 1 hour or less.
In each of the preceding aspects of the method, the olanzapine is administered in the form of a composition or transdermal device as disclosed herein.
B. Olanzapine in an Amount Greater than about 4 mg and Less than about 8 mg
In one aspect, a method for reducing emesis in a subject in need thereof is provided. The method comprises administering or instructing to administer olanzapine to the subject in an amount greater than about 4 mg and less than about 8 mg.
In another aspect, a method for attenuating frequency of vomiting (emesis) in a subject in need thereof is provided. The method comprises administering or instructing to administer olanzapine to the subject in an amount greater than about 4 mg and less than about 8 mg.
In another aspect, a method for attenuating intensity of vomiting (emesis) in a subject in need thereof is provided. The method comprises administering or instructing to administer olanzapine to the subject in an amount greater than about 4 mg and less than about 8 mg.
In each of the preceding aspects, the administering or instructing to administer can be oral or transdermal. In each of the preceding aspects, the amount of greater than about 4 mg and less than about 8 mg refers to daily amount.
In some embodiments, the transdermal administration provides a plasma concentration of olanzapine i) 24 hours after administration of at least about 7 μg/L, ii) 48 hours after administration of greater than about 11 μg/L, and iii) 60 hours after administration of greater than about 15 μg/L.
In some embodiments, the transdermal administration provides a plasma concentration of olanzapine 24 hours after administration of at least about 6 μg/L and achieves a steady state plasma concentration of olanzapine of about 16-24 μg/L for a period beginning at a time 24 hours after administration and continuing for at least about 2 days.
In some embodiments, the transdermal administration provides a plasma concentration of olanzapine 24 hours after administration of at least about 8 μg/L and achieves a steady state plasma concentration of olanzapine of about 18-22 μg/L for a period beginning at a time 24 hours after administration and continuing for at least about 2 days.
In some embodiments, the period of steady state plasma concentration achieved in the transdermal administration continues for at least about 3 days, 4 days, 5 days or 6 days.
In each of the preceding aspects and embodiments, the emesis can be associated with chemotherapy.
In each of the preceding aspects and embodiments, sedation resulting from the administration can be essentially unchanged relative to an olanzapine oral dose of about 2 mg.
C. Olanzapine in an Amount Greater than about 2 mg and Less than about 6 mg
In one aspect, a method of ameliorating nausea in a subject in need thereof is provided. The method comprises administering or instructing to administer olanzapine in an amount greater than about 2 mg and less than about 6 mg. In some embodiments, nausea is ameliorated by reducing frequency of nausea and/or attenuating intensity of nausea.
In another aspect, a method of reducing frequency of nausea in a subject in need thereof is provided. The method comprises administering or instructing to administer olanzapine to the subject in an amount greater than about 2 mg and less than about 6 mg.
In another aspect, a method of attenuating intensity of nausea in a subject in need thereof is provided. The method comprises administering or instructing to administer olanzapine to the subject in an amount greater than about 2 mg and less than about 6 mg.
In another aspect, a method for reducing frequency of nausea and for attenuating intensity of nausea in a subject in need thereof is provided. The method comprises administering or instructing to administer olanzapine to the subject in an amount greater than about 2 mg and less than about 6 mg.
In another aspect, a method of treating nausea in a subject in need thereof is provided. The method comprises administering or instructing to administer olanzapine to the subject in an amount greater than about 2 mg and less than about 6 mg.
In each of the preceding aspects or embodiments, the administering or instructing to administer can be oral or transdermally administering. In each of the preceding aspects, the amount of greater than about 2 mg and less than about 6 mg refers to daily amount.
In some embodiments, the transdermal administration provides a plasma concentration of olanzapine 24 hours after administration of at least about 3 μg/L and achieves a steady state plasma concentration of olanzapine of about 10-16 μg/L for a period beginning at a time 24 hours after administration and continuing for at least about 2 days.
In some embodiments, the transdermal administration provides a plasma concentration of olanzapine 24 hours after administration of at least about 4 μg/L and achieves a steady state plasma concentration of olanzapine of at least about 11 μg/L for a period beginning at a time 24 hours after administration and continuing for at least about 2 days.
In some embodiments, the transdermal administration provides a plasma concentration of olanzapine 24 hours after administration of at least about 5 μg/L and achieves a steady state plasma concentration of olanzapine of at least about 13 μg/L for a period beginning at a time 24 hours after administration and continuing for at least about 2 days.
In some embodiments, the period of steady state plasma concentration achieved in transdermal administration continues for at least about 3 days, 4 days, 5 days or 6 days.
In each of the preceding aspects or embodiments, the nausea can be chronic nausea or acute nausea.
In each of the preceding aspects or embodiments, the nausea can be associated with chemotherapy.
In each of the preceding aspects or embodiments, sedation resulting from the administering can be essentially unchanged relative to an olanzapine dose of about 2 mg.
D. Olanzapine in an Amount Greater than about 2 mg and Less than about 8 mg
In one aspect, a method of preventing nausea and vomiting associated with chemotherapy in a subject in need thereof is provided. The method comprises administering or instructing to administer olanzapine in an amount greater than about 2 mg and less than about 8 mg, wherein sedation resulting from said administering is essentially unchanged relative to an olanzapine oral dose of about 2 mg.
In another aspect, a method to reduce nausea and vomiting associated with chemotherapy in a subject in need thereof is provided. The method comprises administering or instructing to administer olanzapine in an amount greater than about 2 mg and less than about 8 mg, wherein sedation resulting from said administering is essentially unchanged relative to an olanzapine oral dose of about 2 mg.
In each of the preceding aspect, the administering or instructing to administer can be oral or transdermal administering. In each of the preceding aspects, the amount of greater than about 2 mg and less than about 8 mg refers to daily amount.
In each of the preceding aspects and embodiments, the method can reduce intensity of nausea, frequency of vomiting, or both.
In each of the preceding aspects and embodiments, the administering can prevent and/or reduce nausea and vomiting in an acute phase that is during and/or for the first 24 hours after chemotherapy.
In each of the preceding aspects and embodiments, the method can reduce intensity of nausea, frequency of vomiting or both in a delayed phase that is 24-120 hours after chemotherapy.
In each of the preceding aspects and embodiments, the chemotherapy can be highly emetogenic cancer chemotherapy.
In each of the preceding aspects and embodiments, the chemotherapy can be initial and repeat administration of moderately emetogenic cancer chemotherapy.
In the methods described herein, olanzapine can be administered in the form of a formulation suitable for oral administration. The oral formulation comprises olanzapine and a pharmaceutically acceptable carrier. The oral formulation can be a tablet comprising 2 mg, 4 mg, 6 mg, or 8 mg of olanzapine. The tablet can further comprise a pharmaceutically acceptable carrier including carnauba wax, crospovidone, hydroxypropyl cellulose, hypromellose, lactose, magnesium stearate, and microcrystalline cellulose.
In the methods described herein, olanzapine can also be administered in the form of a composition suitable for transdermal delivery. The transdermal composition comprises an adhesive matrix comprising olanzapine, oleic acid, a cellulose or derivative thereof, and one or more of a fatty acid that is not oleic acid, a fatty alcohol and a fatty ester.
In some embodiments, the adhesive matrix or transdermal composition does not comprise another acid (organic or inorganic acid, which is not a polymer or oligomer) which has a pKa lower than that of oleic acid. Such another acid includes acetic acid and trifluoroacetic acid.
In some embodiments, the adhesive matrix or transdermal composition does not comprise a fatty alcohol. In one embodiment, the adhesive matrix or composition does not comprise a fatty acid in addition to oleic acid. In one embodiment, the adhesive matrix or composition does not comprise an alkyl diol.
In some embodiments, the olanzapine and the oleic acid form an association complex via proton transfer. In some embodiments, the molar amount of olanzapine corresponds to a therapeutically effective amount. In some embodiments, the therapeutically effective amount is between about 2-50 mg olanzapine, where such amount can be adjusted based on the side effects associated with delivery of the olanzapine to the patient.
In some embodiments, the molar amount of olanzapine is selected to deliver between 1-20 mg such as 1-12 mg olanzapine in 24 hours when the composition is applied to skin.
In some embodiments, the molar ratio of oleic acid to olanzapine is between about 0.5:1 to 5:1 such as 1:1 to 3:1. In some embodiments, the molar ratio of oleic acid to olanzapine is between about 1:1 to 2.7:1. In some embodiments, the molar ratio of oleic acid to olanzapine is between about 1.2:1 to 2.6:1.
In some embodiments, the adhesive matrix or transdermal composition further comprises an emulsifier or a penetration enhancer. The emulsifier may include, without limitation, one or more of a glycerol ester (monoglycerides, diglycerides, triglycerides), polyoxyl stearate, a mixture of triceteareth-4 phosphate with ethylene glycol palmitostearate and with diethylene glycol palmitostearate, polyglyceryl-3 diisostearate, a mixture of PEG-6 stearate with ethylene glycol palmitostearate and with PEG-32 stearate, oleoylpolyoxyl-6 glycerides, lauryl polyoxyl-6 glycerides, caprylocaproyl polyoxyl-8 glycerides, propylene glycol monocaprylate type I, propylene glycol monolaurate type II, propylene glycol monolaurate type I, propylene glycol monocaprylate type II, polyglyceryl-3 dioleate, a mixture of PEG-6 stearate with PEG-32 stearate, lecithin, cetyl alcohol, cholesterol, bentonite, veegum, magnesium hydroxide, dioctyl sodium sulfosuccinate, sodium lauryl sulfate, triethanolamine stearate, potassium laurate, polyoxyethylene fatty alcohol ethers, glyceryl monostearate, polyoxyethylene poloxypropylene block copolymers (poloxamers), sorbitan monolaurate, lanolin alcohols and ethoxylated lanolin alcohols, sorbitan fatty acid esters, sucrose distearate, sodium alginate, alginic acid, hectorite, and aluminum silicate.
In some embodiments, the emulsifier is a glycerol ester (a product between glycerol and fatty acid). In some embodiments, the glycerol ester is selected from the group consisting of glycerol monooleate, glyceryl monotallate, and glyceryl trioleate.
Penetration enhancers may include one or more of ethanol, propanol, isopropanol, sulfoxides (e.g. decylmethyl or dimethyl sulfoxide), amides (e.g. dimethylformamide, azone, urea, dimethylacetamide), pyrrolidone derivatives (e.g. 1-methyl-4-carboxy-2-pyrrolidone, 1-methyl-2-pyrrolidone, 1-lauryl-4-methoxycarbonyl-2-pyrrolidone), terpenes (e.g. menthol, limonene, terpineol, pinene, carvol), ethyl acetate, methyl acetate, octisalate, pentadecalactone, n-dodecylcaprolactam (Azone), and acrylamide.
In some embodiments, the emulsifier is a glycerol ester. In some embodiments, the glycerol ester is selected from the group consisting of glycerol monooleate (GMO), glyceryl monotallate, and glyceryl trioleate.
In some embodiments, the penetration enhancer is selected from dimethyl sulfoxide and n-dodecylcaprolactam (Azone).
In some embodiments, the adhesive matrix or transdermal composition comprises a fatty ester. In some embodiments, the adhesive matrix or transdermal composition comprises a fatty alcohol, a fatty ester, a fatty acid in addition to oleic acid as described above, or a combination thereof.
The fatty alcohol may include, without limitation, one or more saturated, monounsaturated or polyunsaturated fatty alcohol; which may include, without limitation, one or more of: butanol (C4), butyl alcohol (C4), tert-butyl alcohol (C4), tert-amyl alcohol (C5), 3-Methyl-3-pentanol (C6), capryl alcohol (C8), pelargonic alcohol (C9), capric alcohol (C10), Undecyl alcohol (C11), Lauryl alcohol (C12), Tridecyl alcohol (C13), Myristyl alcohol (C14), Pentadecyl alcohol (C15), Cetyl alcohol (C16), Palmitoleyl alcohol (cis-9-hexadecen-1-ol, C16H32O), Heptadecyl alcohol (1-n-heptadecanol, C17H36O), Stearyl alcohol (C18:0), Oleyl alcohol (C18H36O, C18:1), linoleyl alcohol (C18H34O, cis,cis-9,12-Octadecadien-1-ol), Nonadecyl alcohol (C19), Arachidyl alcohol (C20H42O), octyldodecanol (C20H42O, 2-Octyldodecan-1-ol), Heneicosyl alcohol (C21), Behenyl alcohol (C22H46O), Erucyl alcohol (cis-13-docosen-1-ol, C22H44O), Lignoceryl alcohol (C24), and Ceryl alcohol (C26). Saturated fatty alcohol permeation enhancers may include, without limitation, one or more of: lauryl alcohol (C12), isolauryl alcohol (C12, 10-methyl-1-hendecanol), anteisolauryl alcohol (C12, 9-methyl-1-hendecanol), myristyl alcohol (C14), isomyristyl alcohol (C14, 12-methyl-1-tridecanol), anteisomyristyl alcohol (C14, 11-methyl-1-tridecanol), cetyl alcohol (C16), isopalmityl alcohol (C16, 14-methyl-1-pentadecanol), anteisopalmityl alcohol (C16, 13-methyl-1-pentadecanol), stearyl alcohol (C18), isostearyl alcohol (C18, 16-methyl-1-heptadecanol), and anteisostearyl alcohol (C18, 15-methyl-1-pentadecanol). In some embodiments, the fatty alcohol is myristyl alcohol.
A fatty ester is the product formed by reacting an alcohol with a fatty acid. Exemplary fatty esters include isopropyl palmitate, isopropyl myristate, 2-ethylhexyl palmitate, glyceryl oleate (mono-, di-, or tri-oleate) and 2-ethylhexyl stearate. In some embodiments, the fatty ester is isopropyl palmitate.
Fatty acids other than oleic acid that can be included in the composition include, without limitation, capric acid, lauric acid, palmitic acid, stearic acid, elaidic acid (C18:1), gondoic acid (C20:1), erucic acid (C22:1), nervonic acid (C24:1), and ximenic acid (C26:1), hexadecatrienoic acid (16:3), linoleic acid (C18:2), alpha-linolenic acid (C18:3), gamma-linolenic acid (C18:3), calendic acid (C18:3), stearidonic acid (C18:4) mead acid (C20:3), eicosadienoic acid (C20:3), eicosatrienoic acid (C20:3), dihomo-gamma-linolenic acid (C20:3), arachidonic acid (C20:4), and docosadienoic acid (C22:2).
In some embodiments, the adhesive matrix or transdermal composition comprises thickening agent such as a polyvinylpyrrolidone. In some embodiments, the polyvinylpyrrolidone is selected from a cross-linked polyvinylpyrrolidone and a copolymer of polyvinylpyrrolidone. In some embodiments, the copolymer of polyvinylpyrrolidone is a vinylpyrrolidone-vinyl acetate copolymer. Other alternatives include polyvinyl pyrrolidone homopolymers, and/or polyvinyl pyrrolidone copolymers such as but not limited to PVP, Kollidon 30, and poloxamer, a cross-linked polyvinylpyrrolidone.
In some embodiments, the adhesive matrix may include a thickening agent such as silicon dioxide.
In some embodiments, the cellulose or derivative thereof in the adhesive matrix or transdermal composition is selected from cellulose esters, cellulose ethers, and nitrocellulose. In one embodiment, the cellulose or derivative thereof in the adhesive matrix or composition is selected from cellulose acetate butyrate (CAB), cellulose acetate propionate (CAP), cellulose acetate (CAc), ethylcellulose (EC), methylcellulose (MC), hydroxyethylcellulose (HEC), hydroxypropylcellulose (HPC), hydroxypropylmethylcellulose (HPMC), and carboxymethylcellulose (CMC).
In some embodiments, the cellulose or derivative thereof in the adhesive matrix or transdermal composition has an average molecular weight of greater than 120,000.
In some embodiments, the cellulose or derivative thereof in the adhesive matrix or transdermal composition comprises ethyl cellulose. In some embodiments the adhesive matrix further comprises a pressure-sensitive adhesive.
In some embodiments, the pressure-sensitive adhesive is an acrylate copolymer. The acrylate copolymer pressure sensitive adhesive can include, without limitation, one or more of: Duro-Tak® 87-2196, Duro-Tak® 387-2051, Duro-Tak® 87-2194, Duro-Tak® 87-235A, Duro-Tak® 387-2054, Duro-Tak® 87-900A, Duro-Tak® 87-9301, Duro-Tak® 387-2516, Duro-Tak® 387-2510, Duro-Tak® 280-2516, Duro-Tak® 87-4098, GELVA GMS® 788, GELVA GMS® 9073, Duro-Tak® 387-2353, Duro-Tak® 87-2074, Duro-Tak® 387-2287, Duro-Tak® 87-2852, Duro-Tak® 87-2054, GELVA® 737, Duro-Tak® 80-1196, Duro-Tak® 87-2070, Duro-Tak® 87-2979, Duro-Tak® 87-2888, and DuroTak® 87-2296 (Henkel). Exemplary standard grade silicone pressure sensitive adhesives can include, without limitation, one or more of: BIO-PSA® 7-4401, BIO-PSA® 7-4402, BIO-PSA® 7-4501, BIO-PSA® 7-4502, BIO-PSA® 7-4601, BIO-PSA® 7-4602, (Dow Corning®, Dow Chemicals (Dupont) Midland MI). Exemplary amine compatible grade silicone pressure sensitive adhesives can include, without limitation, one or more of BIO-PSA® 7-4101, BIO-PSA® 7-4102, BIO-PSA® 7-4201, BIO-PSA® 7-4202, BIO-PSA® 7-4301, BIO-PSA® 7-4302. Exemplary silicone hybrid silicone pressure sensitive adhesives include, without limitation, one or more of Dow Corning 7-6101, 7-6102, 7-6301, 7-6302 Silac Hybrid. Exemplary rubber pressure sensitive adhesives include, without limitation, one or more of: polyisobutylene of low molecular weight, polyisobutylene of medium molecular weight, polyisobutylene of high molecular weight (including, e.g., polyisobutylene 1100000 MW, 35000 MW, 800000 MW, 55000 MW, 2300 MW, or mixtures thereof), Duro-Tak® 87-6908, and polyisobutylene/polybutene adhesive.
Adhesives that may be particularly suitable for the drug-in-adhesive patches and formulations therefore described herein include, without limitation, an acrylate copolymer, such as high molecular weight or highly crosslinked adhesives, typically available as self crosslinkable acrylic adhesives. Examples of such adhesives include, without limitation, Duro-Tak® 387-2516, Duro-Tak® 387-2051, Duro-Tak® 87-2852, Duro-Tak® 87-2194 and Duro-Tak® 87-2852 self crosslinkable acrylic adhesives. and GELVA® 737, GELVA® 2655, and GELVA® 1753 self crosslinkable acrylic adhesives.
Alternatively, the adhesive may be an acrylic adhesive having one or more of hydroxyl functional groups and carboxyl functional groups. Still alternatively, the acrylic adhesive may be a “non-functional” adhesive which does not contain functional groups (e.g., lacks —OH groups, —COOH groups, or both). Preferably the acrylic adhesive may be a pressure sensitive adhesive (PSA).
Preservatives and stabilizers can be included in the composition, which may be selected from, without limitation, one or more of sodium metabisulfite, citric acid, ascorbic acid, vitamin E, BHA, Butylated Hydroxy Toluene (BHT), butylated hydroxyanisole, alpha tocopherol, acorbyl palmitate, propionic acid, sodium bisulfate, propyl gallate, monothioglycerol, ascorbic acid, sodium ascorbate, benzethoniumchloride, chlorhexidine, phenylethyl alcohol, chloroxylenol, cresol, hexetidine, phenoxyethanol, chlorobutanol, ascorbic acid, benzoic acid, sorbic acid, potassium sorbate, potassium metabisulfite, sodium metabisulfate, phenol, potassium benzoate, dehydroacetic acid, cetylpyridinium chloride, parabens, benzyl alcohol, benzalkonium chloride, and discoloring agents. In some embodiments, these agents are present in the range of 0.01% to about 30% w/w.
In the methods described herein, olanzapine can also be transdermally administered in the form of a composition comprising: (i) at least about 40 wt % of a pressure-sensitive adhesive; (ii) between about 3-15 wt % of a fatty acid ester; (iii) between about 1-20 wt % such as 5-20 wt % olanzapine; (iv) between about 5-20 wt % cellulose or derivative thereof, and (v) between about 8-25 wt % oleic acid; and wherein the amount of olanzapine is sufficient to deliver between 1-20 mg such as 1-12 mg olanzapine in 24 hours when the composition is applied to skin. In some embodiments, olanzapine can be administered in the form of a transdermal patch comprising the above composition.
In the methods described herein, olanzapine can also be transdermally administered in the form of a composition consisting essentially of (i) at least about 40 wt % of a pressure-sensitive adhesive; (ii) optionally, between about 0.1-25 wt % such as 3-10 wt % of a polyvinylpyrrolidone or silicon dioxide; (iii) between about 3-15 wt % of isopropyl palmitate; (iv) between about 6-15 wt % olanzapine; (v) between about 5-20 wt % cellulose or derivative thereof, and (vi) between about 8-wt % oleic acid; and wherein the amount of olanzapine is sufficient to deliver between 1-20 mg such as 1-12 mg olanzapine in 24 hours when the composition is applied to skin. In other words, olanzapine can be administered in the form of a transdermal patch. In some embodiments, olanzapine can be administered in the form of a transdermal patch comprising the above composition.
In the methods described herein, olanzapine can also be transdermally administered in the form of a composition consisting essentially of (i) about 56 wt % of a pressure-sensitive adhesive; (ii) about 10 wt % ethyl cellulose; (iii) about 10 wt % isopropyl palmitate; (iv) about 8 wt % olanzapine; (v) about 16 wt % of oleic acid; and (vi) about 0.5 wt % of butylated hydroxytolune. In some embodiments, olanzapine can be administered in the form of a transdermal patch comprising the above composition.
In some embodiments, the amount of olanzapine in the transdermal patch or formulation is sufficient to deliver olanzapine with an AUC thereof that is between 1% and 80%, 10% and 80%, 20% and 80%, 30% and 80%, or 40% and 80% of the exposure obtained from a standard of care treatment. The standard of care treatment can be 2.5 mg, 4 mg, 5 mg, 6 mg, 8 mg, 10 mg, 15 mg, mg, or 25 mg of olanzapine compound once daily or once every two days via oral administration. The dosing can be increased or decreased as needed based on the side effects of the individual receiving treatment.
In some embodiments, the amount of olanzapine in the transdermal patch or formulation is sufficient to provide a plasma level of olanzapine that emulates an oral dose, wherein the oral dose can be 4 mg, 5 mg, 6 mg, 8 mg, or 10 mg per day. The term “emulates” can be understood from disclosure herein related to
In certain aspects, compositions disclosed herein are provided in transdermal devices (e.g., transdermal patches). In general, transdermal patches comprise a backing layer and at least one drug matrix layer. In some embodiments, transdermal patches further comprise one or more release liners, tie layers, rate-controlling membranes, and/or various combinations of the foregoing.
A patch may be formed, for example, without limitation, by solvent casting onto a backing layer or release liner, and sandwiching between both, as described herein. To avoid brittleness and impart flexibility to the adhesive matrix layer, one or more plasticizers can be added into the layer. The necessity and choice of plasticizer will depend on the particular adhesive and formulation. Suitable plasticizers are well known in the art. For example, without limitation, the one or more optional plasticizer may be selected from, without limitation, one or more of: glycols (in particular, without limitation, e.g. polyethylene glycol 400, polyethylene glycol 600, propylene glycol), higher alcohols (e.g. dodecanol), surfactants, sebacic acid esters (e.g. dibutyl sebacate, diethyl sebacate), citric acid esters (e.g. tributyl citrate, triethyl citrate), phthalic acid esters (e.g. diethyl phthalate, dibutyl phthalate), glycerol or glycerol esters (e.g. glycerine triacetate, glycerin), sugar alcohols (e.g. sorbitol, sucrose), tartaric acid esters (e.g. diethyl tartrate), oil (e.g. silicone oil, mineral oil), triacetin, oelic acid esters, adipate, and diisopropyl adipate. For inclusion into an adhesive patch formulation, and in particular an acrylic PSA patch formulation, preferred plasticizers include, without limitation, one or more of glycerol and glycerol esters. Further plasticizers may be found in “Handbook of Plasticizers” by George Wypych, 2004, Chem Tec Publishing), which is hereby incorporated by reference in its entirety. In certain embodiments, the plasticizers are present in the range of 0.01%-95% w/w.
Many suitable materials for the backing layer and release liner are known, and include polymer films, fabrics and non-woven materials, e.g., continuous films that prevent ingress of external moisture into the adhesive layer from activities such as showering or bathing. The backing and release liner should preferably be occlusive, or substantially occlusive. Such films include, without limitation, polypropylene, polyvinyl chloride, cellulose acetate, ethyl cellulose, polyurethane, polyethylene, and polyester. Optionally, the backing may be a layered composite that include a metal, such as, without limitation aluminum, e.g., polyethylene terephthalate-aluminum-polyethylene composites, or e.g., a polyester and an ethylene vinyl acetate copolymer heat seal layer (particularly as a backing), or e.g., a fluoropolymer coated polyester film (particularly as a release liner. Suitable backing layers include, without limitation, Scotchpak 1006, 1022, 1109, 9723, 9732, 9733 (3M company); suitable release liners include, without limitation, Scotchpak 1006, 9709, 9741, 9742, 9744, and 9755 (3M company). The thickness of the backing layer and of the release liner is generally more than 10 iim and less than 200 μm, typically about 20 μm to about 120 μm, e.g., about 40 μm to about 100 μm.
The coating formulation for the patch, may comprise volatile solvents which are removed from the patch matrix upon its drying; such volatile solvents include: methanol, ethanol, propanol, 1-propanol, 2-propanol, ethyl acetate, acetone, dichloromethane, chloroform, toluene, and IPA).
In some embodiments, the transdermal device for systemic delivery of olanzapine comprises a drug (matrix) comprising an acrylate polymer adhesive, a fatty ester, oleic acid, and olanzapine, and wherein the transdermal device when applied to skin delivers (i) an amount of olanzapine effective to alleviate nausea, vomiting, or both within a first period of between about 4-8 hours and (ii) an amount of olanzapine to alleviate nausea, vomiting or both for at least a sustained period of between about 1-7 days. In some embodiments, the drug matrix further comprises a cellulose or derivative thereof. The cellulose or derivative thereof can be those as previously described.
In some embodiments, the transdermal device when applied to (human cadaver) skin in vitro has an average unit flux during the sustained period of 1-20 μg/cm2/hr such as about 4 μg/cm2/hr. The total dose delivered is a function of both the unit flux and the surface area of the patch. Thus, this flux is sufficient to deliver a daily therapeutic dose with a patch of a reasonable and practical size.
In some embodiments, the sustained period is between about 1-7 days or between about 2-7 days or between about 2-5 days.
In some embodiments, the amount of olanzapine delivered in the first period and the sustained period is at least about 3 mg per day.
In some embodiments, wherein the amount of olanzapine delivered in the first period and the sustained period is between about 3-6 mg per day.
In some embodiments, the drug matrix comprises between about 1-20 wt % such as 5-20 wt % olanzapine.
In some embodiments, the transdermal device for delivery of olanzapine includes a drug matrix comprising an acrylate polymer adhesive, a fatty ester, oleic acid, and olanzapine, and wherein the transdermal device when applied to skin in vitro has a flux profile where (i) a maximum flux rate is achieved within about 36-54 hours, (ii) between about 65-80% of the maximum flux rate is achieved within about 18-36 hours, and (iii) an average flux rate of about 1-20 μg/cm2/hr such as about 3 μg/cm2/hr for a period of between about 1-7 days is achieved. In some embodiments, the drug matrix further comprises a cellulose or derivative thereof. The cellulose or derivative thereof can be those as previously described. Unexpectedly, the inclusion of a cellulose did not reduce flux.
In some embodiments, the average flux rate is for a period of between about 1-7 or 1-3 or 1-days.
In some embodiments, wherein the flux profile provides over the period an amount of olanzapine effective to alleviate nausea, vomiting, or both.
Usage of the described transdermal and topical systems described here will have dosages that vary depending on the mode of administration, the particular condition to be treated and the effect desired. Dosage may be transdermal application once daily for 1 day, 2 days, 3, day, 4 days, days, 6 days, 7 days, 8 days, 9 days, 10 days, 11 days, 12 days, 13 days, or 14 days, or longer. Alternatively, application may be several times a day for 1 day, 2 days, 3, day, 4 days, 5, days, 6 days, 7 days, 8 days, 9 days, 10 days, 11 days, 12 days, 13 days, or 14 days, or longer. Alternatively transdermal application may be once every day, every 2 days, every 3 days every 4 days, every 5 days, every 6 days, every 7 days, every 8 days, every 9 days, every 10 days, every 11 days, every 12 days, every 13 days, or every 14 days.
In some embodiments, the transdermal or topical formulations provide for a predetermined rate of delivery of the active components of the transdermal patch over a predetermined time period. In some embodiments, the predetermined time period is 24 hours, 48 hours, 72 hours, 96 hours, 120 hours, 144 hours, 7 days, 8 to 13 days, two weeks, or 15 days. In some further embodiments, the predetermined rate is a constant rate.
In yet further embodiments, the transdermal or topical formulations described herein provide a steady absorption rate of the active components of the transdermal patches by the patient over a predetermined time. In some embodiments, the predetermined time period is 24 hours, 48 hours, 72 hours, 96 hours, 120 hours, 144 hours, 7 days, 8 to 13 days, two weeks, or 15 days. In some further embodiments, the predetermined rate is a constant rate.
In yet further embodiments, the transdermal or topical formulations described herein provide a range of predetermined blood serum levels of the active components of the transdermal patches in a patient over a predetermined time. In some embodiments, the predetermined time period is 24 hours, 48 hours, 72 hours, 96 hours, 120 hours, 144 hours, 7 days, 8 to 13 days, two weeks, or 15 days.
In yet further embodiments, the transdermal or topical formulations described herein provide a plasma concentration of the active components of the transdermal patches in a therapeutic range in a patient over a predetermined time. In some embodiments, the predetermined time period is 24 hours, 48 hours, 72 hours, 96 hours, 120 hours, 144 hours, 7 days, 8 to 13 days, two weeks, or 15 days.
In yet further embodiments, the transdermal or topical formulations described herein allow for reduced variability in dosage of the active components in a patient over a predetermined time. In some embodiments, the predetermined time period is 24 hours, 48 hours, 72 hours, 96 hours, 120 hours, 144 hours, 7 days, 8 to 13 days, two weeks, or 15 days.
In some embodiments, the transdermal or topical formulation provided herein may be administered in dosage regimens such as once in a day, once in two days, once in three days, once in four days, once in five days, once in six days, once in a week, once in 8 to about 13 days, once in two weeks, once in 15 days to about 30 days.
In yet further embodiments, a pharmacokinetic assessment is performed on a blood sample of a subject who has been treated using the transdermal delivery systems described herein. The transdermal formulations described herein are adjusted in response to the pharmacokinetic assessment. For example, the dosage may be adjusted such that a smaller patch, larger patch, or multiple transdermal patches are applied to the subject, or a patch having a more or less of a dose of active ingredients may be applied. In some embodiments, the formulation will be available in various dosage strengths and patch sizes in order to achieve optimum therapeutic outcome based on the subject's requirements.
In still other embodiments, a site preparation agent can be used in conjunction with the transdermal formulations, compositions, and patches described above. The site preparation agent can be applied to a patient's skin prior to application of the transdermal formulation, composition, or patch. For instance, 1 to 10 drops, such as from about 1 to 5 drops, such as from about 1 to 4 drops of a site preparation agent can be applied to the skin and can be allowed to dry prior to applying the transdermal formulation, composition, or patch. The total volume of the site preparation agent applied to the patient's skin can range from about 0.025 milliliters to about 1.5 milliliters, such as from about 0.05 milliliters to about 1.25 milliliters, such as from about 0.1 milliliters to about 1 milliliter. Alternatively, the site preparation agent can be applied to the skin via a wipe or swab that has been soaked in a solution containing the site preparation agent. Then, the site preparation agent can be allowed to contact the skin for a time period ranging from about 10 seconds to about 1 hour, such as from about 30 seconds to about 45 minutes, such as from about 1 minute to about 30 minutes. Thereafter, any excess site preparation agent can be removed from the skin by wiping, blotting, or other suitable means, such as via a wipe or other absorbent material. Then, after sufficient time has been allowed for the site preparation agent to dry, the transdermal formulation, composition, or patch can be applied to the skin.
Various site preparation agents are contemplated by the present disclosure including polar aprotic solvents such as but not limited to dimethyl sulfoxide, n-methyl-2-pyrrolidone, or 2-pyrrolidone, or such as but not limited to water, an alcohol (such as but not limited to ethanol, isopropanol, benzyl alcohol) or glycols (Transcutol P, dipropylene glycol and derivatives thereof, propylene glycol and derivatives thereof, glycerin, polyethylene glycol and derivatives thereof, salicylic acid (e.g., 40% salicylic acid in dimethyl sulfoxide), or a combination thereof, and adhesive removers such as Uni-Solve® or Remove®, which can be applied from a wipe and is commercially available from Smith & Nephew, and which contains aloe, dipropylene glycol methyl ether, isoparaffin, aloe extract, and benzyl alcohol. Another adhesive remover that can be utilized is Skin-Prep®, which can be applied from a wipe and contains isopropyl alcohol, a butyl ester of a copolymer of methyl vinyl ether and maleic anhydride or maleic acid, and acetyl tributyl citrate. The use of a wipe may assist in the removal of surface contaminants from the skin and may approve adhesion of the transdermal formulation, composition, or patch and is contemplated for use in conjunction with any of the site preparation agents described above.
Without intending to be limited by any particular theory, the present inventors have found that the application of such a site preparation agent increases the flux by from about 25% to about 75%, such as from about 30% to about 70%, such as from about 35% to about 65%, after a time between 6 and 7 days, such as about 162 hours compared to when no site preparation agent is applied. For instance, the average flux after about 162 hours can range from about 4.5 μg/cm2/hr to about 6 μg/cm2/hr, such as from about 4.6 μg/cm2/hr to about 5.9 μg/cm2/hr, such as from about 4.7 μg/cm2/hr to about 5.8 μg/cm2/hr. Moreover, the application of such a site preparation agent increases the cumulative permeation by from about 10% to about 60%, such as from about 12.5% to about 55%, such as from about 15% to about 50% over a time frame between 6 and 7 days, such as over a time frame of 162 hours compared to when no site preparation agent is applied. For instance, the cumulative permeation after about 162 hours can range from about 875 μg/cm2 to about 1300 μg/cm2, such as from about 900 μg/cm2 to about 1250 μg/cm2, such as from about 925 μg/cm2 to about 1200 μg/cm2.
Further, it is to be understood that the present disclosure also contemplates a kit that includes a transdermal formulation, composition, or patch, along with instructions that direct or instruct a person such as a patient, healthcare professional, etc. to apply a site preparation agent to the patient's skin prior to applying the transdermal formulation, composition, or patch.
In still other embodiments, the kit can also include the site preparation agent along with the transdermal formulation, composition, or patch and instructions.
Examples 2-5 and 7-8 disclose transdermal compositions that can be used in the methods disclosed herein.
Example 2 describes preparation of olanzapine transdermal patches labeled as OLA 1, OLA 2, OLA 3, OLA 4, OLA 5, OLA 6, and OLA 7.
In the permeation study as described in Example 3, using OLA 1 as an example, the flux increased rapidly reaching 72% of maximum within the first 24 hours and maximum at about 48 hours. After this, the transdermal flux gradually decreased at a steady rate to about 61% of maximum at 168 hours. The average flux from 24 to 168 hours for 11 donors (50 total replicates) was 4±1.3 ug/hr/sqcm. See
Example 4 compares the cold flow property of two compositions. The results indicated that composition with an additional polymer such as ethyl cellulose has reduced cold flow.
Example 5 describes a comparative bioavailability (BA) study in healthy female volunteers to characterize the olanzapine systemic exposure profile of a transdermal device as described herein of two different sizes applied for 7-days compared to that of a once daily 7-day regimen of olanzapine 10 mg/day. The systemic exposure modeled in silico demonstrated by AUC0-∞, of the transdermal device used in the study herein was dosed to be less than a 10 mg dose of oral olanzapine. See
Example 5 also describes the hunger score and sedation scores for each treatment group. The cumulative sum total of intensity scores of diary response scored twice-daily to a question of hunger on an ordinal scale of 0-10 (maximum cumulative sum total of intensity score was 250 and minimum is 0). The cumulative sum total of intensity scores for hunger were significantly lower with transdermal delivery than oral dosing (P<0.008) while there was no difference in the hunger scores between Cohort 2 and 3 (P=0.19). These results do not appear to be dose related as the hunger scores with arithmetically higher in the lower dose patch Cohort. See
Example 6 demonstrates the effect of ethyl cellulose and PVP on flux rate and cold flow. Ethyl cellulose has been known to be a rate retarding polymer in transdermal delivery system which greatly reduce the flux of active agents from the adhesive matrix and hence the utility of the patch to deliver drug. The results of Example 5 indicate that ethyl cellulose greatly reduces cold flow. However, ethyl cellulose does not influence the flux of olanzapine. This is an unexpected result which improves the utility of the patch by delivering therapeutic amounts of olanzapine while minimizing cold flow, an undesirable effect.
Example 7 illustrates the effect of utilizing a site preparation agent on the flux and cumulative permeation of olanzapine, where the use of various site preparation agents such as water, 70% isopropyl alcohol, dimethyl sulfoxide, and Remove® adhesive remover between the transdermal patch and the skin improved both the flux and cumulative permeation of olanzapine compared to when a transdermal patch was applied directly to the skin.
Example 8 illustrates the effect of utilizing a site preparation on the average flux of olanzapine, where the use of various site preparation agents such as 40% salicylic acid in dimethyl sulfoxide and Remove® adhesive remover between the transdermal patch and the skin improved both the average flux compared to when a transdermal patch was applied directly to the skin.
Olanzapine for prevention of nausea and vomiting has been tested at doses of 10 mg and a few studies at 5 mg a day, but without a pharmacodynamic evaluation. No studies have evaluated the minimum effective dose in nausea and vomiting. One side effect of olanzapine is fatigue/sedation, which is problematic in certain types of cancer therapy and olanzapine causes sedation.
Transdermal delivery of drugs can be likened to a continuous intravenous infusion, in that drug is absorbed directly into the blood at a steady rate during the entire application of the patch. One advantage to transdermal patch delivery is that the high blood levels (maximum) and low blood levels (minimum) are avoided. In the case of most drugs, the maximum concentration (Cmax) is associated with toxicity of the drug and the minimum concentration (Cmin) is usually below the required therapeutic blood level. Usually, the target for the patch is the blood level, which provides the same area under the time concentration curve (AUC0-∞) over the dosing interval. AUC0-∞ is a measure of total drug exposure.
As a result, the blood level target that emulates an oral administration requires the determination of the blood ranges at the maximum and minimum levels both on the first dose as well as at steady state. This target modeling can be estimated in silico using traditional pharmacokinetic models based on the in vitro flux of the drug in cadaver skin testing systems (Franz Cell).
Example 1 describe a phase 1 study of antiemetic effect of four doses of oral olanzapine. The primary objective of the study was to assess the antiemetic effectiveness, following an apomorphine challenge on day 8, of 4 different doses of olanzapine or a placebo administered for 8 days and identify the target blood levels needed for the proposed optimal dose.
This study indicated the optimal dose for nausea and vomiting identified was 6 mg a day while the minimum effective dose for nausea was 4 mg a day based on the planned statistical integration of the nausea scores and the incidence of retching and vomiting.
The following examples are illustrative in nature and are in no way intended to be limiting.
This study was an exploratory phase 1 design to determine the minimal effective dose of olanzapine as represented by the plasma concentration. Twenty-four healthy female volunteers were enrolled. Four active-treatment groups and a cohort of placebo-treated subjects were evaluated. The oral dose assignments in each cohort were: (1) olanzapine 2.0 mg a day (n=5) or placebo (n=1), (2) olanzapine 4.0 mg a day (n=5) or placebo (n=1), (3) olanzapine 6.0 mg a day (n=5) or placebo (n=1), and (4) olanzapine 8.0 mg a day (n=5) or placebo (n=1).
Subjects were administered study drug once daily for 8 days. During this period, subjects maintained a study diary of their side effects. The subject diary was used to collect on a daily basis any adverse events including an assessment of the presence and/or intensity of sedation on a numeric scale where 1=no sedation and 10=excessive sedation.
On the 8th day, subjects were administered apomorphine at a dose of 0.05 mg/kg and assessed over 6 hours. During this period, subjects were asked to record episodes of nausea on a numeric scale every 15 minutes for the duration of assessment. The intensity of nausea was captured using a 1-10 rating scale where 1=no nausea and 10=severe nausea. Emesis intensity was also captured where 1=no emesis and 10=severe emesis. Episodes of retching or emesis were collected and measured for the absolute number of retches or vomits during the collection period and documented for the time of the specific event following the administration of the apomorphine.
Blood samples were obtained for olanzapine measurement prior to study drug administration on day 1, on day 8 before the last dose of olanzapine was administered, just prior to the administration of the apomorphine challenge, and just prior to discharge from the CRU after the 6-hour observation. To aid in understanding the change in blood levels from the first dose to last dose of olanzapine, published data was used to project the day 1 Cmax and Cmin (trough) (Polasek T et al. Br J Clin Pharmacol (2018) 84 462-476).
The frequency of sedation was categorized over the 8-day olanzapine-dosing interval as a percent of subjects who experience sedation. The intensity of sedation was categorized using the area under the curve (AUC) of the intensity scale over the 8 day dosing period. The frequency of nausea was categorized as a percent of subjects who experienced no nausea. The intensity of nausea was calculated using the AUC of the intensity scale over the 6 hour observation period following apomorphine. The frequency of emesis was categorized as a percent of subjects who experienced no emesis. The intensity of emesis was categorized using the AUC of the intensity scale over the 6 hour observation period. The frequency of retching was categorized as a percent of subjects who experienced no retching. The intensity of retching was categorized using the AUC of the intensity scale over the 6 hour observation period. The minimum effective dose was determined with a predetermined method. The steady state trough and pre-apomorphine plasma olanzapine concentrations was integrated by dose group. The data was ranged to provide a target blood level for each equivalent oral dose.
The table below lists the incidence of nausea, retching, vomiting, and sedation by dose level.
The optimal dose for nausea and vomiting identified was 6 mg a day while the minimum effective dose for nausea was 4 mg a day based on the planned statistical integration of the nausea scores and the incidence of retching and vomiting.
The compositions for transdermal delivery were prepared by mixing the ingredients in the table below optionally in a solvent such as ethyl acetate.
The following steps are provided using composition OLA 1 as an example for preparing a transdermal patch. The above ingredients are blended by stirring for 18 hours and then, using a commercial benchtop spreader, the matrix is evenly spread onto an 8×14 inch sheet of release liner (such as 3M 9744) to a thickness of 0.5 mm. The sheet is then placed in an oven at 100° F. for one hour to evaporate off the ethyl acetate adhesive solvent. An opaque backing membrane (such as 3M 9730 NR film) with low permeability to oxygen to inhibit photo and oxidative degradation, is then carefully applied by hand to avoid formation of bubbles and voids. A circular die (1.5 inches diameter) is used to cut patches (7 sqcm) for subsequent studies. The average weight of a sample (n=52) of patches is 213 mg. Since the average weight of a sample of backing membranes and release liners is 124 mg, the calculated weight of the adhesive matrix is 89 mg. Thus, after drying, the drug adhesive matrix has a surface density of 13 mg/sqcm, containing 9% or 1.2 mg/sqcm of olanzapine.
The general procedure for flux measurement of the transdermal patch is as follows. The release liner is peeled off the patch and the adhesive surface is applied to a piece of human cadaver skin. The skin, stored as a sheet frozen on dry ice, is thawed in room temperature water, and visually inspected for defects before the patch is applied. Transdermal flux is measured in standard Franz diffusion cells composed of a cylindrical donor compartment and a separate water jacketed cylindrical receptor compartment. The skin is clamped between the two compartments with the subdermal side facing the receptor compartment. The receptor compartment is filled with receptor medium, held at constant temperature, and constantly stirred to collect the olanzapine as it diffuses through the skin and into the receptor compartment. The receptor compartment is emptied at 24 hr intervals for assay of olanzapine and replaced with fresh receptor solution. The concentration of olanzapine in the receptor compartment never exceeds 10% of its solubility so that sink conditions are maintained. The table below lists the flux assay conditions.
Flux is measured for a period of 7 days (or 168 hours), except for 2 experiments only for 6 days.
Patches were cut with a 7 sqcm die and subjected to compression with a 1 kg weight as follows: (1) the release liner was removed from the patch, and then the patch was carefully applied to the fluoropolymer side of a fresh 3.5×3.5 square of release liner, (2) another 3.5×3.5 square of release liner, fluoropolymer side down, was placed on top of the patch so that the patch was now sandwiched between two layers of release liner, (3) a 1 kg weight was carefully applied on top of the patch in order to avoid any lateral movement and left in place for 3 days, (4) at the end of 3 days, the weight was carefully removed and the % increase in surface area was measured. The results are below, which shows that addition of ethyl cellulose reduces cold flow.
A comparative bioavailability study was conducted to identify the optimal formulation for the clinical studies and assess the bioavailability of a transdermal patch as described herein compared to oral olanzapine at the primary published dose of 10 mg/day in Chemotherapy Induced Nausea and Vomiting.
This study is a cohort-assigned, open label study with 3 cohorts of approximately 12 subjects in each cohort. Subjects were cohort-assigned 1:1:1 to either OLA 1-1×35 cm2 patch (Group 2), or OLA 1-2×35 cm2 patches (Group 3) or 10 mg oral Zyprexa® (Group 1) for seven consecutive days. Treatment for each of the OLA 1 cohorts was administered as a patch(es) applied to the deltoid region of the body. The 10 mg oral Zyprexa® treatment was administered with 240 mL of water daily at the same time each morning. A total of approximately 36 healthy volunteers, ages 18 to 55 years inclusive were enrolled in this study. A diary was dispensed to each subject and daily self-evaluations of the level of sedation and hunger on a numeric scale was assessed on an ordinal score of 0-10 twice a day. The daily self-evaluations of the level of sedation and hunger continued to the morning of day 13.
On Day 1 OLA 1 patches were placed on the cohort-assigned subjects and remained on them through Day 8 or cohort-assigned subjects were administered 10 mg oral Zyprexa® QD with 240 mL of water for 7 days (not given on day 8). Water consumption will be restricted for 1 hour after dosing.
Blood samples for PK analysis were obtained at the following times: pre-dose (within 30 minutes prior to dosing) and 1, 2, 4, 8, 12, 24, 28, 48, 52, 72, 76, 96, 100, 120, 124, 144, 148, and 168 hours (+/−15 minutes); then for timepoints 192, 216, 240, 264, and 288 hours (+/−2 hours) after initial dose administration. For patch cohort, blood sample was taken each am at the same time, 4 hours after morning trough sample. For oral Zyprexa® cohort, PK sample was taken (trough), and 4 hours post-dose.
The median plasma level of olanzapine from each cohort group as a function of time in hours is shown in
The table below summarizes pharmacokinetic information for the three cohort groups. The total dose for Group 2 and 3 was apparent dose absorbed during the 7-day study. The apparent dose was obtained after a mass balance study/calculation. In the mass balance study, post study testing for the residual olanzapine that remained in the patch dosage form after removal was assayed using a validated method. The difference between the drug load (47.25 mg/patch) and the residual is the apparent dose of the table below:
Patches were manufactured according to the formulations in the table below and applied to human cadaver skin. The flux of olanzapine through the skin was measured in Franz diffusion cells over a period of about 7 days at 33° C. by following procedures similar to Example 3. Cold flow was measured as described in Example 4.
The only difference between formulation OLA 7 and OLA 7b is that 10.0% ethyl cellulose existing in formulation OLA 7 was removed in OLA 7b. Please note that the total weight percentage in OLA 7b is 90%. If the total weight percentage in OLA 7b is 100%, the weight percentage for each ingredient will be Olanzapine: 8.89%, Oleic acid: 17.78%, Isopropyl Palmitate: 11.11%, Butylated Hydroxytoulene: 0.55%, and Duro-tak 87-9301: 61.67%.
There is no difference in flux between a formulation containing ethyl cellulose (OLA 7) and one that did not (OLA 7b). However, in the presence of ethyl cellulose there is a substantial and significant reduction in cold flow.
Transdermal patches were manufactured according to the formulations in the table below. The flux was then evaluated after the application of several different site preparation agents (100% water, 100% dimethyl sulfoxide (DMSO), 70% isopropyl alcohol (IPA), and Remove® adhesive remover) with the application of no site preparation agent used as a control.
Specifically, the site preparation agents were applied to stratum corneum skin samples in the following manner. First, 2-3 drops of each site preparation agent was applied to the skin samples without rubbing or wiping to avoid mechanical changes to the skin samples (e.g., to avoid rips, tears, or holes). Then, the site preparation agents were dried with a wipe blotting technique to remove any excess liquid and blot the skin samples so that they were completely dry. Next, the transdermal patches were applied to the skin samples and the skin samples were then mounted on modified Franz cells. The flux of olanzapine through the skin was measured in Franz diffusion cells over a period of about 162 hours at 33° C. by following procedures similar to Example 3. The results are shown in the graph of
As can be seen from the data table above as well as
Transdermal patches were manufactured according to the formulations in the table below. The flux was then evaluated after the application of several different site preparation agents (100% water, 70% isopropyl alcohol (IPA) wipes, Remove® adhesive remover wipes, and 40% salicylic acid in DMSO).
First, 8 cm2 pieces were cut from a sheet of freshly thawed human cadaver skin from a single donor, with five pieces used for each site preparation described above.
Then, to prepare the skin, fluid was expressed from the IPA wipe (3 drops) and from the Remove® wipe (5 drops) onto the epidermal surface of each piece of skin which was sufficient to cover the whole epidermal surface. The skin was then patted with the same wipe for one minute to ensure that no liquid was left on the surface. A patch was immediately applied to each piece of skin and then mounted into a Franz Diffusion Cell. For site preparation with the salicylic acid solution, each piece was first mounted in the Franz Diffusion Cell and then 680 mg of the solution was added to the epidermal surface through the donor compartment. After 30 minutes, the skin was unmounted, wiped with a Kim-Wipes tissue and a patch was applied. The patched skin was then remounted in the Franz Diffusion Cell. Pieces of unprepped skin were patched and mounted in the diffusion cells to act as untreated controls. The receptor medium was sampled (13 ml) and replaced with fresh medium every 24 hours for a total of 5 days. Samples of the receptor medium were assayed by HPLC for Olanzapine. The pertinent experimental conditions are summarized in the table below.
The flux study results are presented in the table below. As can be seen from the data, the Remove® and Salicylic Acid/DMSO site preparation agents demonstrated an increase in average flux after 120 hours compared to no site preparation and the 70% IPA site preparation.
While a number of exemplary aspects and embodiments have been discussed above, those of skill in the art will recognize certain modifications, permutations, additions and sub-combinations thereof. It is therefore intended that the following appended claims and claims hereafter introduced are interpreted to include all such modifications, permutations, additions and sub-combinations as are within their true spirit and scope.
All patents, patent applications, patent publications, and other publications mentioned herein are hereby incorporated by reference in their entirety. Where a patent, application, or publication contains express definitions, those definitions should be understood to apply to the incorporated patent, application or publication in which they are found and not to the present application unless otherwise indicated.
The present application claims priority to and the benefit of U.S. Provisional Patent Application No. 63/083,759 and U.S. Provisional Patent Application No. 63/083,774, both filed on Sep. 25, 2020, the entire contents of which are hereby incorporated by reference for all purposes.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/US2021/051868 | 9/24/2021 | WO |
| Number | Date | Country | |
|---|---|---|---|
| 63083759 | Sep 2020 | US | |
| 63083774 | Sep 2020 | US |
