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Gene Therapy: AAV Doses Should Not Be Subject To Fixed Upper Limit, US FDA Panel Says

 
• By Sue Sutter

Lack of reference standards inhibits ability to make comparisons between products or set caps for total vector genome dose or total capsid dose, advisory committee says; panelists suggest other approaches to prevent and mitigate toxicities, including running longer-term animal studies and investigating the efficacy of immunosuppression prophylaxis and treatment strategies.

Dime
Manufacturers cannot just "turn on a dime" and make a new lot of AAV gene therapy with much greater purity, the FDA acknowledges. • Source: Alamy

The US Food and Drug Administration appears unlikely to impose a blanket cap on either the total vector genome dose per subject or the total capsid dose for adeno-associated virus (AAV) vector-based gene therapies in an attempt to limit toxicity, based upon input received from the agency’s external experts.

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More from US FDA Performance Tracker

AMR-Targeting Drug Secures EMA PRIME Designation

 
• By Neena Brizmohun

Antabio’s next-generation, broad-spectrum antibacterial, MEM-ANT3310, has made it onto the European Medicines Agency’s priority medicines scheme. The company says its product is designed to make a significant impact on the growing problem of antimicrobial resistance.

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.

‘Pipeline In A Pill’ Or Pipe Dream? US FDA’s April Goal Dates Test Expansion Strategies

 
• By Bridget Silverman

Sanofi’s Dupixent, Amgen’s Uplizna, and Bristol’s Opdivo seek new indications, while J&J hopes to start a franchise with nipocalimab and Stealth’s day of reckoning approaches.

US FDA’s March Approval Candidates Take Aim At Established Markets

 
• By Bridget Silverman

March features nearly 20 user fee goal dates, including a crowd of novel candidates for crowded areas like hemophilia, heart disease and urinary tract infections, as well as the potentially first therapies for a rare eye disease and hyperphagia of Prader-Willi syndrome.

More from Regulatory Trackers

‘Pipeline In A Pill’ Or Pipe Dream? US FDA’s April Goal Dates Test Expansion Strategies

 
• By Bridget Silverman

Sanofi’s Dupixent, Amgen’s Uplizna, and Bristol’s Opdivo seek new indications, while J&J hopes to start a franchise with nipocalimab and Stealth’s day of reckoning approaches.

Global Pharma Guidance Tracker – February 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.

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.