1. Pink Sheet
  2. >>Product Reviews

CytoDyn's Leronlimab Suffers Refuse To File Letter; US FDA Concerned About Dosing, Manufacturing

 
• By Jessica Merrill

US FDA declines to review the CCR5 antagonist for use in highly treatment-experienced HIV patients. Safety data from an ongoing study should be sufficient to address the agency’s concerns about the higher 700mg dose, CytoDyn management says, but FDA also has questions about the production of the self-injectable syringes.

Stop sign
A refuse to file letter has stopped review of leronlimab by the US FDA until CytoDyn can provide more data.

CytoDyn, Inc. is pushing to develop the CCR5 antagonist leronlimab for a wide range of indications, including HIV, cancer and COVID-19, but the effort has hit a roadblock at the US Food and Drug Administration. The company announced on 13 July that it has received a refusal to file letter from the FDA for its first biologics license application for leronlimab for highly treatment experienced HIV patients.

The update casts more doubts on CytoDyn's development plan for leronlimab, which has already faced some stumbling blocks. The company said it filed the BLA on 27 April, but the...

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 Product Reviews

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.

EMA Touts Faster Global Post-Approval Changes Via Regulatory Reliance

 
• By Eliza Slawther

The European Medicines Agency says that a regulatory reliance pilot that it is supporting to speed up assessments of post-approval changes appears to be accelerating evaluation timelines in non-EU countries.

New EU Approvals

 
• By Neena Brizmohun

The Pink Sheet's list of EU centralized approvals of new active substances has been updated to include two new products, one of which is Vyjuvek, Krystal Biotech's advanced therapy for treating dystrophic epidermolysis bullosa.

US FDA Meeting Drought Ends … With A Vengeance

 
• By Michael McCaughan

The first 100 days of the Trump Administration were notable for an extraordinary decline in the number of public meetings hosted by the US Food and Drug Administration. But the schedule changed quickly.

More from Pink Sheet

EMA Touts Faster Global Post-Approval Changes Via Regulatory Reliance

 
• By Eliza Slawther

The European Medicines Agency says that a regulatory reliance pilot that it is supporting to speed up assessments of post-approval changes appears to be accelerating evaluation timelines in non-EU countries.

UK And US Regulators In Sync On RWD External Control Arms

 
• By Vibha Sharma

The UK regulator’s draft guideline on the use of external control arms based on real-world data reflects concepts similar to those outlined by the US Food and Drug Administration.

New EU Approvals

 
• By Neena Brizmohun

The Pink Sheet's list of EU centralized approvals of new active substances has been updated to include two new products, one of which is Vyjuvek, Krystal Biotech's advanced therapy for treating dystrophic epidermolysis bullosa.