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After Leqembi Approval, US FDA In No Rush To Declare Amyloid A Validated Surrogate Endpoint

 
• By Sue Sutter

Ability to use beta amyloid plaque reduction to support a traditional approval in Alzheimer’s, or for use with other drug classes, needs to be evaluated case-by-case based on the available data, agency says. In the HIV/AIDS space, it took FDA decades to declare a surrogate endpoint validated.

Clock in sand
US FDA likely to take its time in making a validation decision about amyloid reduction as a surrogate endpoint. • Source: Shutterstock

Despite the full approval of Eisai Co., Ltd. and Biogen, Inc.’s Leqembi (lecanemab-irmb), the US Food and Drug Administration is not rushing to declare amyloid plaque reduction as a validated surrogate for clinical benefit in Alzheimer’s disease.

The 6 July conversion from accelerated to traditional approval for lecanemab is a watershed moment in Alzheimer’s disease drug development, marking the first full approval of a disease-modifying treatment – one that initially came to market on the

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More from Approval Standards

US FDA Waiting On Guidance Agenda Future As HHS Seeks Regulation Cuts

 
• By Derrick Gingery

The FDA continues to wait for a decision on whether its priority guidances will be published as HHS asks the public for potential regulation cuts to fulfill President Trump’s executive order.

US FDA Rare Disease Case Studies Provide Development Models For Sponsors

 
• By Laura Helbling

Sanofi’s Xenpozyme and Sentynyl’s Nulibry are the first two case studies the FDA is using to continue educating rare disease sponsors on best practices.

Pink Sheet Podcast: A New Director For US FDA’s Biologics Center, Guidance Production Slowdowns

 
• By Derrick Gingery, Sue Sutter, and Nielsen Hobbs

Pink Sheet editors discuss the appointment of Vinay Prasad as the new director of the Center for Biologics Evaluation and Research and revelations that FDA layoffs now are hindering development of guidance documents.

US FDA Advisory Committee Misperceptions Abound … At HHS

 
• By Michael McCaughan

HHS Secretary Robert F. Kennedy Jr. regularly decries the “conflicts of interest” he believes abound in advisory committees, but his concerns, as well as a recent “policy directive” eliminating industry representatives, seem driven by a misunderstanding of the panels’ jobs.

More from Pathways & Standards

US FDA Advisory Committee Misperceptions Abound … At HHS

 
• By Michael McCaughan

HHS Secretary Robert F. Kennedy Jr. regularly decries the “conflicts of interest” he believes abound in advisory committees, but his concerns, as well as a recent “policy directive” eliminating industry representatives, seem driven by a misunderstanding of the panels’ jobs.

US FDA’s Expanded Surprise Foreign Inspections: Impact And Enforcement Hoops

 
• By Anju Ghangurde

As the US FDA expands unannounced foreign inspections building on pilots in India and China, experts expect higher scrutiny of overseas sites and perhaps even an industry shakeout in the longer term, though staffing and enforcement challenges could slow things down.

US FDA Guidance Roadblock: Writing Continues, But Publication Has Slowed Or Stopped

 
• By Derrick Gingery

Cuts to the FDA’s policy and legal personnel have prevented dozens of product-specific guidances for generic drug development from being published.