申请人:Syntrix Biosystems, Inc.
公开号:US07612071B2
公开(公告)日:2009-11-03
The present invention relates to pharmaceutical compositions containing the antifolate aminopterin, processes for making the compositions, and methods of using them to treat disorders in adult and pediatric patients. Pharmaceutical compositions substantially free of impurities are provided comprising a therapeutically effective amount of aminopterin, or a pharmaceutically acceptable salt thereof. Relative to the teachings of the prior art, the disclosed methods and compositions provide unexpected improvements that include a greater interpatient oral bioavailability in pediatric patients, a smaller interpatient coefficient of variation of oral bioavailability, a smaller mean intrapatient coefficient of variation of oral bioavailability, a greater therapeutic index, a smaller coefficient of variation of toxicity, efficacy in combination therapy, and efficacy of certain polyglutamated metabolites.
本发明涉及含有抗叶酸类药物氨甲喋呤的制药组合物、制备这些组合物的方法,以及使用它们治疗成人和儿童患者疾病的方法。本发明提供了几乎不含杂质的制药组合物,其中包括治疗有效量的氨甲喋呤或其药学上可接受的盐。相对于现有技术的教导,所披露的方法和组合物提供了意外的改进,包括儿童患者口服生物利用度更高、口服生物利用度的患者间系数变异更小、口服生物利用度的患者内平均系数变异更小、更大的治疗指数、毒性系数变异更小、联合治疗的疗效以及某些多聚谷氨酸代谢物的疗效。