Skip to main content

ALS Drug Relyvrio May Be Pulled From Market

Medically reviewed by Carmen Pope, BPharm. Last updated on March 12, 2024.

By Physician’s Briefing Staff HealthDay Reporter

MONDAY, March 11, 2024 -- Amylyx Pharmaceuticals announced Friday that the controversial amyotrophic lateral sclerosis (ALS) drug Relyvrio has failed to help patients in a large follow-up study; however, the company has stopped short of saying it will definitely pull the drug from the market. The drug is sold as Albrioza in Canada.

"Amylyx intends to share plans for Relyvrio/Albrioza in ALS, which may include voluntarily withdrawing Relyvrio/Albrioza from the market," the company said in its statement. "At this time, Relyvrio/Albrioza and its related patient support program will continue to be available for people living with ALS. Amylyx has voluntarily decided to pause promotion of the medication during this time."

Executives added that they were "surprised and disappointed" by the results and would announce their plans for the drug in the next two months.

Relyvrio was first approved by the U.S. Food and Drug Administration in September 2022, following a lengthy, impassioned campaign by patients with ALS. Unfortunately, the latest company study showed the drug did not slow the disease compared with a placebo treatment, and it also did not produce improvements on any secondary measures, such as muscle strength.

Relyvrio's approval was mainly based on results from one small study that was criticized by some FDA scientists. An outside committee of experts also voted against the drug initially, before being swayed to back it at a follow-up meeting requested by patients. At the time, Amylyx noted it was continuing a larger follow-up study of more than 600 patients that would provide further data on the drug.

In a highly unusual move, Amylyx executives at that second advisory committee meeting told FDA regulators they would pull the drug from the market if follow-up research did not confirm its efficacy. That commitment seemed to reassure the FDA advisers, who then voted in favor of the drug’s approval, despite the questionable data.

More Information

Disclaimer: Statistical data in medical articles provide general trends and do not pertain to individuals. Individual factors can vary greatly. Always seek personalized medical advice for individual healthcare decisions.

© 2024 HealthDay. All rights reserved.

Read this next

Some Recreational Activities Might Up Amyotrophic Lateral Sclerosis Risk

TUESDAY, March 26, 2024 -- Recreational activities — including golfing, gardening or yard work, woodworking and hunting — may be associated with an increased risk of...

Experimental ALS Drug Will Not Be Approved

THURSDAY, Sept. 28, 2023 -- An advisory panel to the U.S. Food and Drug Administration on Wednesday voted resoundingly against recommending a stem cell-based experimental...

Alpha-Linolenic Acid Levels Inversely Linked to Risk of Death in ALS

TUESDAY, June 27, 2023 -- Higher plasma levels of the polyunsaturated fatty acid (PUFA) alpha-linolenic acid (ALA) is associated with reduced risk of death in patients with...

More news resources

Subscribe to our newsletter

Whatever your topic of interest, subscribe to our newsletters to get the best of Drugs.com in your inbox.