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

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

Another Regeneron CRL Prompts Regulatory Operations Questions

 
• By Alaric DeArment

CEO Len Schleifer said during the company’s first quarter earnings call that most of the complete response letters the company has received related to third-party suppliers, not efficacy or safety.

US FDA Miss On Stealth’s Elamipretide Boosts Signal Of Broader Delays Due To Staff Cuts

 
• By Sue Sutter

Failing to meet the 29 April user fee date for the Barth syndrome treatment, and CDER’s request for a delay in responding to Vanda’s appeal of a tradipitant complete response letter, suggest a slowdown in review work due to layoffs and other recent changes.

US FDA’s Review Performance Held Steady Despite Stormy First Quarter

 
• By Bridget Silverman

Organizational turmoil has not yet affected reviews of novel agent applications, with Q1 2025 approvals coming in low, but the first quarter share of the entire year is variable.

Elevar/Hengrui’s Second US CRL A Bad Omen For Multiregional Trials In Asia-Dominant Cancers?

 
• By Dexter Jie Yan

While CMC glitches linger over a US NDA for Elevar/Hengrui’s novel liver cancer combination following a second complete response letter, the separate issue of underrepresentation of US patients in multiregional trials is looming large after new FDA draft guidance last year.

More from Product Reviews

Biomarker Negativity At Issue In Pfizer Bid To Broaden Talzenna CRPC Claim

 
• By Bridget Silverman

The FDA questioned Pfizer’s reliance on a “large, incompletely defined” subgroup of castration-resistant prostate cancer patients without known HRR gene alterations in its review of the proposed expansion of Talzenna’s first-line indication for HRR-mutated CRPC to an all-comers population.

UroGen’s Mitomycin: Are Randomized Trials For Bladder Cancer Necessary?

 
• By Sue Sutter

The Oncologic Drugs Advisory Committee will vote on the risk-benefit of UGN-102 for low-grade, intermediate-risk, non-muscle invasive bladder cancer based on data from a single-arm trial, but the FDA also seeks input on requiring randomized studies for future treatments.

EU Moment Of Truth For Obe-Cel And 10 Other New Medicines

 
• By Neena Brizmohun

Autolus’s CAR T therapy obe-cel is among the medicines that are this week due for an opinion by the European Medicines Agency on whether they should be marketed in the EU.