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Enriched Trials Not Just About Marker-Positive Patients, FDA Says

 
• By Cathy Dombrowski

Without clear-cut evidence that a drug will not work in patients without a predictive marker, enrichment strategies should allow for collecting some data in the marker-negative population, FDA says in draft guidance.

Information about a drug’s effect in patients without a characteristic that predicts efficacy can be just as important as the data for those with the predictive marker when trying to prove that marker’s value.

FDA makes this case in its draft guidance on “Enrichment Strategies for Clinical Trials To Support Approval of...

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More from United States

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.

No Surprise Here: Foreign Drug Facilities Should Expect Surprise Inspections, US FDA Says

 
• By Sue Sutter

The FDA's recent announcement of plans to expand unannounced inspections at ex-US facilities should put firms on advance notice that their next foreign facility inspection may not be preannounced, Ivy Sweeney, acting head of the agency's drug inspections office said.

Base Benefit-Risk Decisions On Data, Not Opinion And Passion, CDER’s Tidmarsh Says

 
• By Sue Sutter

New US FDA drugs center director George Tidmarsh’s data-centric comments at a Reagan-Udall Foundation meeting on unapproved fluoride products could suggest patients’ and caregivers’ experiences will carry less weight in benefit-risk decisions under his leadership.

Pink Sheet Podcast: FDA’s New Top Drug Regulator, Sarepta’s Options After Elevidys Stand-Off

 
• By Derrick Gingery, Sarah Karlin-Smith, and Nielsen Hobbs

Pink Sheet reporter and editors discuss the potential impact George Tidmarsh could have as director of the US FDA Center for Drug Evaluation and Research and the issues threatening the future of Sarepta’s gene therapy Elevidys.

More from North America

EMA Says ‘No’ To Roche/Sarepta’s Elevidys, US FDA Investigates Fourth Death

 
• By Eliza Slawther and Sarah Karlin-Smith

The European Medicines Agency recommended against pan-EU marketing authorization of Roche/Sarpeta’s gene therapy Elevidys for the treatment of Duchenne muscular dystrophy as the US reported another death in an Elevidys patient.

Merck’s Keytruda Gains Medicare Negotiation Reprieve With Expanded Orphan Exemption

 
• By Cathy Kelly

Bristol Myers Squibb’s Opdivo and Merck's Welireg also could benefit from the delay in Medicare price negotiation process eligibility.

US FDA’s Biologics Center Departures Grew Before More Than 100 RIFs Exited

 
• By Derrick Gingery

The Center for Biologics Evaluation and Research saw departures far outnumber new hires in the second and third quarters of FY 2025, before more than 100 people left July 14 after the reduction-in-force was finalized.