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

US FDA’s 2022 Novel Agent Actions Suggest Acceleration In Use Of Complete Response Letters

 
• By Bridget Silverman

COVID does not appear to be a driving factor, and letters are split almost equally between clinical and quality concerns.

FDA Complete response stamp holder
US FDA has been using its "complete response" stamp more frequently. • Source: Nielsen Hobbs; the Pink Sheet | Alamy image

The year 2022 has seen a dramatic escalation in the rate of complete response letters to approvals of novel agents, even against the backdrop of increasing CRL numbers in the past several years, a Pink Sheet analysis of our US FDA Performance Tracker data shows.

Almost half – 47.1% – of the novel agent applications acted on by the FDA in 2022 have received CRLs:...

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

Real-Time Release Of CRLs Is US FDA’s Goal, Agency Leaders Affirm

 
• By Michael McCaughan

The US FDA says its release of complete response letters for products subsequently approved by the agency is just a first step toward releasing rejection letters when they are issued, assuming legal issues can be resolved.

Complete Response Letter Trio Raises Prospect Of Tidal Shift In Regenerative Medicine Regulation

 
• By Bridget Silverman

Replimune's RP1 oncolytic immunotherapy became the third regenerative medicine to receive an FDA complete response letter this month as the agency appears to re-visit previous agreements about accelerated approval.

US FDA’s Second Half 2025 User Fee Goals Swing Toward Respiratory Disease

 
• By Bridget Silverman

The 43 novel agents with user fee goal dates in the remainder of 2025 have fewer oncologics and infectious disease drugs than the first half of the year.

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.

More from Product Reviews

New EU Filings

 
• By Neena Brizmohun

Arimoclomol, Zevra Therapeutics's treatment for Niemann-Pick disease Type C, is among the latest products that have been filed for review by the European Medicines Agency for potential EU marketing approval.

Sanofi Secures EU Fast-Track Status For ‘Game-Changing’ Sleeping Sickness Drug

 
• By Neena Brizmohun

If approved, Sanofi’s acoziborole could become the first single-dose oral treatment for sleeping sickness.

Repurposed Generics For Rare Diseases: Janet Woodcock Proposes Shortcut

 
• By Grace Moser

A Duke-Margolis working group is developing ideas to enable non-profit firms to seek US FDA approval for new indications for off-patent medicines. The former acting commissioner thinks citizen petitions might be the fastest route.