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US FDA Rejects Onpattro Label Expansion: History Repeats In Reverse?

 
• By Michael McCaughan

In going against an advisory committee vote, the agency produces ironic echoes with the history of the approved treatment for ATTR-CM, Pfizer’s Vyndaqel.

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• Source: Shutterstock

The US Food & Drug Administration’s rejection of a broader label for Alnylam Pharmaceuticals Inc.’s Onpattro (patisiran) is yet another reminder of the surprising intricacies of product assessments at the agency.

Less than a month ago, the Cardio-Renal Drugs Advisory Committee voted 9-3 that the benefits of the drug for use...

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More from US FDA Performance Tracker

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.

US FDA’s CRL Release More Incremental Than ‘Radical’ Transparency

 
• By Bridget Silverman

The transparency initiative collects CRLs already made public in approval packages on its drugs@fda site to post on the openFDA public portal.

America Next: Most Novel Agents With July Goal Dates Have Been Approved Overseas

 
• By Bridget Silverman

The US FDA will not be in its usual position as the first regulator to approve novel drugs, with only one of the six novel candidates on the July user fee calendar seeking its first approval worldwide in the US

US FDA’s June Approval Forecast: Infection Prevention, Cancer And HAE

 
• By Bridget Silverman

Upcoming FDA user fee goal dates include novel products from a busy lung cancer pipeline, a single-dose passive immunization against RSV for infants, what could be the first oral HAE acute treatment, and a first-in-class HAE preventive antibody.

More from Regulatory Trackers

EU CHMP Opinions And MAA Updates

 
• By Neena Brizmohun

This is an update of recommendations from the European Medicines Agency's Committee for Medicinal Products for Human Use on the authorization of new medicines in the EU, and updates on EU marketing authorization changes recommended by the CHMP.

Global Pharma Guidance Tracker - May 2025

 
• By Vibha Sharma and Anabel Costa-Ferreira

Stay up to date on regulatory guidelines from around the world with the Pink Sheet’s Guidance Tracker. The complete Global Pharma Guidance Tracker, with sortable and searchable listings going back to 2014, is available online.

US FDA’s June Approval Forecast: Infection Prevention, Cancer And HAE

 
• By Bridget Silverman

Upcoming FDA user fee goal dates include novel products from a busy lung cancer pipeline, a single-dose passive immunization against RSV for infants, what could be the first oral HAE acute treatment, and a first-in-class HAE preventive antibody.