Amylyx’s Relyvrio Could See Fast Sales Growth, But Also Spark Pricing Debate

Interpret Survival Analysis “Cautiously,” Label Advises

The FDA gave full approval based on a Phase II study, without the need for Phase III confirmatory data, for Amylyx’s ALS drug Relyvrio but the $158,000 WAC could spark a debate over pricing.

The FDA approved Amylyx's Relyvrio for amyotrophic lateral sclerosis • Source: Shutterstock

Amylyx Pharmaceuticals, Inc.’s Relyvrio (sodium phenylbutyrate and taurursodiol) marks a milestone as the first new US Food and Drug Administration approval of a drug for amyotrophic lateral sclerosis (ALS) in five years, but it could spark a debate over cost and cost-effectiveness due to its six-figure price tag and lingering uncertainty around its efficacy.

The FDA approved Relyvrio on 29 September with a broad label for ALS in adults, based on data from the...

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