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Tysabri’s PML Risk Quantified In Revised Label; Can Added Certainty Add Scripts?

 
• By Martin Berman-Gorvine

Multiple sclerosis and Crohn’s disease patients with anti-JC virus antibodies who have previously taken other immunosuppressants have a 1.1% risk of developing the deadly neurological condition after taking Biogen Idec /Elan’s Tysabri for more than two years.

A first-ever quantification of the risks to multiple sclerosis and Crohn’s disease patients who take Biogen Inc. and Elan Corp. PLC’s Tysabri (natalizumab) of developing the deadly, incurable infection progressive multifocal leukoencephalopathy may, along with a newly approved diagnostic, help alleviate anxiety among patients and health care providers.

“We see the inclusion in the Tysabri label of the exact risk of developing PML while on Tysabri as a...

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More from United States

To Compete With China, US FDA Must Deregulate Early Gene Therapy Studies, CAR-T Inventor Says

 
• By Sarah Karlin-Smith

FDA regulation was painted as an obstacle to US dominance in the cell and gene therapy space even as panelists at an agency event praised the Office of Therapeutic Products' track record under Nicole Verdun.

Cell/Gene Therapy Cost Recovery Options Could Include Pre-Approval Public ‘Bridge’ Funding

 
• By Kate Rawson

Expanded funding for cost recovery could dovetail with FDA Commissioner Martin Makary’s idea for a “conditional approval” pathway based on a plausible mechanism of action.

House Gives US FDA More Non-User Fee Funds Than Requested

 
• By Sue Sutter and Derrick Gingery

A US House bill would give the FDA $33.1m more in budget authority than requested by the Trump Administration for fiscal year 2026. The measure was sent to the full House Appropriations committee on a party-line vote.

Aurobindo, MSN Fail To Beat US Nuplazid Patent Expiring In August 2038

 
• By Dean Rudge

Acadia’s Nuplazid for hallucinations and delusions associated with Parkinson’s disease psychosis appears safe from generic competition until well into the next decade, following a favorable infringement and validity decision by a US district court.

More from North America

LDT Final Act? US FDA Will Not Appeal District Court Decision Vacating Final Rule

 
• By Brian Bossetta

The US FDA ended efforts to regulate lab-developed tests as medical devices for now when it did not appeal a decision from the Eastern District of Texas that tossed out the agency's final rule.

Novo, Lilly Ad Challenges Cause Discontinued Claims For Compounded GLP-1s

 
• By Sue Sutter

Two pharmacies, a medical spa and a telehealth company voluntarily removed efficacy, safety and quality claims for compounded GLP-1 products after innovator companies filed challenges with the National Advertising Division.

Prasad Says Involvement In US FDA Product Approvals Will Mirror Prior CBER Directors

 
• By Sarah Karlin-Smith

The remarks from the new CBER director suggest Prasad will not be involved in most product-specific decisions.