吉雷德斯特兰特的质量平衡,代谢途径,绝对生物可用性和健康人群中的药理动力学
Smita Kshirsagar1, Ya-Chi Chen1, Jiajie Yu1
1Clinical Pharmacology (S.K., Y.-C.C., J.Y., S.Ka., L.M., V.M.), Drug Metabolism and Pharmacokinetics (S.C.K., S.M., J.W., S.C., Y.T., D.Z., W.Z., T.DB.), Early Clinical Development and Oncology (M.R.G.), and Safety Science (U.O.), Genentech, Inc., South San Francisco, California.
概括
吉雷德斯特兰是一种新型雌激素受体降解剂,在人类中表现出适度的口服生物利用性. 药物主要通过氧化代谢和便分泌而排出.
科学领域:
- 药理学 药理学是指药理学的学科.
- 药物代谢和药理动力学
- 在瘤学瘤学.
背景情况:
- 吉雷德斯特兰是一种强效和选择性的小分子雌激素受体降解剂.
- 了解其药理动力学特征对于临床开发至关重要.
研究的目的:
- 为了评估Giredestrant的绝对生物利用性 (aBA).
- 为了确定 [14C]giredestrant 在人类中的质量平衡,排泄途径和代谢物概况.
主要方法:
- 质量平衡研究涉及口服 [14C] giredestrant 给非生育能力的妇女 (n=6).
- 绝对生物可用性研究比较口服和静脉注射的giredestrant剂量在非生育潜力的妇女 (n=10).
- 分析便和血中的放射性,以确定药物回收,排泄途径和新陈代谢.
主要成果:
- 在42天内,排泄物中总放射性的平均恢复率为77.0% (68.0%便,9.04%尿液).
- 在口服后,吉雷德斯特兰显示了58.7%的中度绝对生物利用率.
- 药物被广泛代谢,主要的排泄途径是氧化代谢,其次是便分泌.
结论:
- 吉雷德斯特兰耐受性良好,迅速吸收,并表现出适度的口服生物利用性.
- 静脉注射后观察到较低的清除率和较高的分发量.
- 氧化代谢和随后的便分泌是人体内化剂消除的主要途径,为进一步的临床发展提供了信息.
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