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Mapping US FDA's Biosimilar Pathway With Pink Sheet Drug Review Profiles

 
• By Bridget Silverman

First four 351(k) BLA approvals highlight emerging FDA positions on issues from naming to the role of biosimilar-specific data, as detailed in Pink Sheet's Drug Review Profile series.

Drug Review Profile regular column

FDA's biosimilars pathway has encouraged a large and active pipeline of potential products, but translating statutory directives into practical processes has not always gone smoothly.

FDA has only approved five products under the pathway, which was signed into law in 2010. The Biologics Price Competition and Innovation Act provided an abbreviated approval pathway for biological...

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Potency Assay Issues Delayed US FDA Approval Of Mesoblast’s Ryoncil For Years

 
• By Sue Sutter

The company’s failure to show its potency assays measured attributes directly related to the mesenchymal stromal cell product’s therapeutic effect highlights the importance of a robust CMC program for complex cell therapies.

Mesoblast’s Ryoncil: US FDA Changed Its Mind On Need For A Randomized Trial

 
• By Sue Sutter

Agency staff repeatedly said the BLA based on a single-arm study in 55 patients lacked substantial evidence of effectiveness in steroid-refractory acute graft-versus-host disease and a randomized trial was needed, but changed course “based on additional consideration” after a second CRL.

Ryoncil Chronology: Three Review Cycles, Two CRLs, One Dispute Resolution Request

 
• By Sue Sutter

The Pink Sheet’s Drug Review Profile looks at the timeline for the clinical development and US FDA review of Mesoblast’s remestemcel for graft-versus-host disease.

Testosterone, TRAVERSE, And A Label Change 15 Years In The Making

 
• By Bridget Silverman

The Pink Sheet drug review profile investigates the long and rigorous process behind the FDA’s recent relaxation of the cardiovascular safety warning for testosterone products.

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Legal, Process Problems May Plague New US FDA COVID-19 Vaccine Policy

 
• By Sarah Karlin-Smith

The FDA may have violated laws and regulations along with many norms in how it released its planned changes for COVID-19 vaccine approvals.

Novavax’s COVID-19 Vaccine Label Narrowed After Political Officials Intervened

 
• By Sarah Karlin-Smith

The label that Novavax's COVID-19 vaccine was slated to receive before political officials held up the approval was broader than was granted 16 May.

Biomarker Negativity At Issue In Pfizer Bid To Broaden Talzenna CRPC Claim

 
• By Bridget Silverman

The FDA questioned Pfizer’s reliance on a “large, incompletely defined” subgroup of castration-resistant prostate cancer patients without known HRR gene alterations in its review of the proposed expansion of Talzenna’s first-line indication for HRR-mutated CRPC to an all-comers population.