1. Pink Sheet
  2. >>Product Reviews
  3. >>Complete Response Letters

What Information Does US FDA Need For Stealth’s Elamipretide After CRL?

 
• By Sue Sutter

The agency said it will consider knee extensor muscle strength as a potential intermediate clinical endpoint to support accelerated approval, but Stealth CEO Reenie McCarthy said announcing it via complete response letter is confusing and inefficient.

Door open, door closed
The FDA's complete response letter shut the door to regular approval, but opened the door to accelerated approval. (Shutterstock)
Key Takeaways
  • The FDA issued Stealth a complete response letter on its Barth syndrome drug elamipretide, but said it would consider accelerated approval based on an intermediate clinical endpoint, despite previously rejecting use of the expedited pathway.

A US Food and Drug Administration complete response letter that proposed accelerated approval as a potential path forward for

Read the full article – start your free trial today!

Join thousands of industry professionals who rely on Pink Sheet for daily insights

  • Start your 7-day free trial
  • Explore trusted news, analysis, and insights
  • Access comprehensive global coverage
  • Enjoy instant access – no credit card required
Start Free Trial

Already a subscriber?

More from Complete Response Letters

Slowdown: US FDA’s 2025 Novel Approvals Are On Below-Average Pace

 
• By Bridget Silverman

US FDA's 25 novel approvals in 2025 fell short of the agency's five-year average count, driven by a drop in drugs center approvals; 45 user fee goals remain in second half of year.

Capricor Gets Complete Response For DMD Cell Therapy: Unconvincing Data Or New Attitude At FDA?

 
• By Joseph Haas

Seven weeks before its action date and a month after an advisory committee was hastily cancelled, Capricor gets a CRL for its cell therapy deramiocel in DMD-related cardiomyopathy citing efficacy and manufacturing concerns. It has a Phase III study nearing readout, though.

US FDA’s CRL Release More Incremental Than ‘Radical’ Transparency

 
• By Bridget Silverman

The transparency initiative collects CRLs already made public in approval packages on its drugs@fda site to post on the openFDA public portal.

US FDA Teases Disclosure Program, But Industry Has Seen This Before

 
• By Derrick Gingery

Center for Biologics Evaluation and Research Director Vinay Prasad said Commissioner Martin Makary wants to release previously inaccessible FDA documents, but previous commissioners have made the same pronouncements only to make little progress.

More from Product Reviews

US FDA’s CRL Release More Incremental Than ‘Radical’ Transparency

 
• By Bridget Silverman

The transparency initiative collects CRLs already made public in approval packages on its drugs@fda site to post on the openFDA public portal.

US FDA Advisory Committee Supports Vaccine Safety, Scrutinizes AE Reporting Quality

 
• By Sue Sutter

The Pediatric Advisory Committee supported routine safety monitoring for three vaccines and 21 drugs, but the panel’s consumer representative said adverse event reporting needs improvement and FDA literature reviews should include lawsuits as well as social media.

US FDA Pediatric Adcomm To Examine HPV, Flu, Dengue Vaccines: No News Is Good News?

 
• By Sue Sutter

Pediatric Advisory Committee will weigh the FDA's recommendation that routine safety monitoring continue for Merck & Co's Gardasil and Sanofi's Fluzone and Dengvaxia despite a political climate that has been unkind to vaccines.