Amylyx's Relyvrio: The Road To Regulatory Flexibility And US FDA Approval

A Pink Sheet timeline shows the regulatory highs and lows of AMX0035's path to US approval for treatment of amyotrophic lateral sclerosis.

AMX0035 timeline
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Amylyx Pharmaceuticals, Inc. has experienced a host of US regulatory ups and downs with its amyotrophic lateral sclerosis drug Relyvrio (sodium phenylbutyrate/taurursodiol, also known as AMX0035).

Disappointments included denials of fast-track and breakthrough therapy designation, along with the US Food and Drug Administration review division’s initial advice that a second randomized,

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