| CPC A61K 31/5513 (2013.01) [A61K 9/0019 (2013.01); A61K 47/20 (2013.01); A61K 47/22 (2013.01); A61K 47/34 (2013.01); A61P 25/18 (2018.01)] | 24 Claims |

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1. A method of treating schizophrenia in a patient in need thereof, the method comprising subcutaneously administering to the abdomen or upper arm of the patient, once per 28±5 days, 0.9-1.5 mL of a pharmaceutical composition comprising 305 mg of olanzapine per gram of composition, wherein the composition comprises:
30%-32% (w/w) of olanzapine;
52%-54% (w/w) of dimethyl sulfoxide;
12%-14% (w/w) of a diblock copolymer comprising polylactic acid and polyethylene glycol and having a number average molecular weight of 6.5 to 12.5 kg/mol and comprising 75%-84% by weight (w/w) polylactic acid; and
3%-3.5% (w/w) of a triblock copolymer comprising polylactic acid and polyethylene glycol and having a number average molecular weight of 6 to 13 kg/mol and comprising 83%-88% by weight (w/w) polylactic acid;
and wherein the diblock copolymer and triblock copolymer together comprise 15%-17.5% by weight (w/w) of the composition;
wherein the administration of the composition to the patient by subcutaneous injection results in
the patient having an olanzapine plasma Cmax within 11-14 days after the administration;
an olanzapine plasma Cmax of less than 100 ng/mL after any subcutaneous injection administered in the method;
a dose-normalized ratio of AUC∞ after any subcutaneous dose of the composition to the AUCtau of oral olanzapine calculated for 28 days is between 0.97-1.29; and
an olanzapine plasma concentration of at least 10 ng/ml for at least 21 days of the 30 days following any of the subcutaneous injections.
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