Sanofi Scraps Phase 2 Study of Lademirsen

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Sanofi has told Regulus Therapeutics that it is terminating a Phase 2 clinical study (HERA Study) of lademirsen (RG-012) for treating Alport syndrome after data failed to meet Sanofi’s pre-defined futility criteria. Previously, Sanofi acquired from Regulus the rights for developing and marketing RG-012.

Regulus says that Sanofi also notified the company that it is currently evaluating different opportunities involving RG-012. Under their agreement, Regulus was eligible to receive a $25 million milestone payment upon the successful completion of the HERA study. Regulus says it still remains eligible for the milestone payment in the event of successfully completing a Phase 2 fibrosis proof of concept study

Lademirsen was designed to block the activity of a small RNA molecule called miR-21, which is believed to be associated in the development of kidney tissue scarring (fibrosis) and damage. The drug has been granted orphan drug status by FDA as a potential therapy for Alport syndrome.

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