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Leqembi Clinical Development: Aduhelm Opened The Door For Accelerated Approval

 
• By Sue Sutter

Timeline of lecanemab’s clinical development shows how, almost three years after telling Eisai and Biogen that their Phase II results did not support regular or accelerated approval, the FDA review division reversed course following its decision to approve aducanumab on a surrogate endpoint.

Drug Review Profile: Leqembi Chronology
FDA reversed course on Leqembi's approvability after giving Aduhelm the nod. • Source: Pink Sheet/Shutterstock/Alamy

The accelerated approval Biogen, Inc. and Eisai Co., Ltd.’s amyloid-targeting antibody Aduhelm (aducanumab-avwa) for Alzheimer’s disease was a seminal moment in the development of the companies’ Leqembi (lecanemab-irmb) for the same population.

In comments prior to and during an October 2018 meeting, the US Food and Drug Administration’s Division of Neurology Products told the companies in no uncertain terms that the results...

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More from Drug Review Profiles

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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Autolus’s Aucatzyl And GSK’s Blenrep Among 10 New Drugs To Get EMA Nod

 
• By Vibha Sharma

The European Medicines Agency has OKd 10 new medicines for EU-wide approval, including a CAR-T therapy for treating acute lymphoblastic leukemia. Two drugs were, however, rejected.

EU Authorization Before US? Biologics Manufacturing Is Likely To Blame

 
• By Bridget Silverman

In the infrequent cases when EU authorization precedes US FDA approvals of new products, biologics manufacturing issues are usually to blame, a Pink Sheet analysis found.

US FDA Punts On New COVID-19 Framework’s Impact On Fall Shots

 
• By Sarah Karlin-Smith

The FDA’s advisors split on whether to update COVID-19 vaccines for the fall. The agency refused to discuss the impact of the new vaccine framework on availability.