$Agile Therapeutics, Inc.(AGRX)$ Twirla(左炔诺孕酮/炔雌醇经皮系统)/AG200-15是一种低剂量、每周一次的联合激素避孕贴片,含有雌激素的有效成分炔雌醇(ee)和孕激素的左炔诺孕酮(lng)。Twirla的设计是每周使用一次,持续三周,然后一周不使用补片。既往递交史与问题2013年CRL:需要额外的临床数据2017年CRL:需要额外的临床数据,已经纳入了phase 3 SECURE的研究数据。FDA认为提供数据不足以支撑药物获批,需要额外提供研究证明或者重新设计药物(“FDA determines that our data do not support approval of the Twirla NDA and requires us to conduct additional studies or reformulate Twirla to a”)FDA认为存在的问题:quality control adhesion test methods for the Twirla manufacturing process,l observations identified during an inspection of a facility of our third-party manufacturer for the Twirla NDA that must be resolved, l questions on the in vivo adhesion properties of Twirla and their potential relationship to the SE