针对性抑制CYP11A1在割抵抗性前列腺癌中的目标抑制
Karim Fizazi1, Alice Bernard-Tessier1, Guilhem Roubaud2
1Institut Gustave Roussy, University of Paris-Saclay, Villejuif, France.
NEJM evidence
|February 6, 2024
概括
ODM-208有效地抑制了转移性割抵抗性前列腺癌 (mCRPC) 的类固醇激素产生. 该药物显示出抗瘤活性,特别是在患有雄激素受体突变 (ARmut) 的患者中,尽管存在上腺功能衰竭的风险.
科学领域:
- 内分泌学 在内分泌学.
- 在瘤学瘤学.
- 药理学 药理学是指药理学的学科.
背景情况:
- 前列腺癌的生长受到类固醇激素的影响,即使在抵抗割的阶段也会持续.
- 细胞染色体P450 11A1 (CYP11A1) 对于类固醇激素生物合成至关重要,使其成为治疗点.
- 转移性割抵抗性前列腺癌 (mCRPC) 通常需要新的治疗策略.
研究的目的:
- 评估新型CYP11A1抑制剂ODM-208的安全性,药理动力学,药理动力学和初步疗效.
- 在重度预治疗的mCRPC患者中研究ODM-208,包括那些具有雄激素受体基因 (AR) 突变 (ARmut) 的患者.
主要方法:
- CYPIDES研究:一个第一阶段 (3+3设计) 和第二阶段试验.
- ODM-208每天服用两次,并配合葡萄糖皮质醇/矿物质皮质醇替代药物和抗雄激素缺乏疗法.
- 患者包括那些先前接受了mCRPC治疗的患者,根据AR联体结合域突变 (ARmut) 分层.
主要成果:
- ODM-208每天两次服用5毫克,配合德克萨米他1毫克/弗鲁德科尔提松0.1毫克,平衡了类固醇生成抑制和毒性.
- 与治疗相关的上腺功能不足是最常见的毒性 (36.2%在第一阶段,13.3%在第二阶段).
- 丸激素水平显著下降;PSA下降≥50%发生在73.7%的ARmut患者 (第一阶段) 和53.3% (第二阶段) 中.
结论:
- ODM-208有效地抑制类固醇激素生物合成,上腺功能不足作为预期的毒性.
- 在重度预治疗的mCRPC患者中观察到抗瘤活性的证据,特别是那些ARmut.
- 对于特定的mCRPC种群来说,ODM-208代表了一个潜在的治疗选择.
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