Research

Hormonal

Enobosarm increases lean body mass but fails to deliver consistent, clinically meaningful functional gains (e.g., stair-climb power) in cancer cachexia patients, leading to regulatory rejection.

Enobosarm was tested for cancer cachexia and successfully increased muscle mass, but it did not improve physical function enough to gain FDA approval. This highlights that muscle size alone does not guarantee functional improvement in sick populations.

GoodQualifiesHIGH confidence
It was a major setback when it became clear that both programmes increased LBM but failed to deliver consistent, clinically meaningful functional gains, and thus no approval followed.
Stephan von Haehling · JCSM Communications · 2026

Why this rating

Based on Phase III trials (POWER-1 and POWER-2) which are peer-reviewed and robust, though the outcome was negative for functional endpoints.

Source

Enobosarm in Muscle Wasting

Stephan von Haehling · JCSM Communications · 2026

DOI 10.1002/rco2.70027

narrative_reviewCited 2×
Read the paper
DOI resolved against Crossref · corpus check 2026-06-10

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