Roche Drops Muscle Disease Drug After Trial Failure

Written By :  sheeba farhat
Published On 2026-03-23 06:00 GMT   |   Update On 2026-03-23 06:00 GMT

Bengaluru: Roche has stopped developing its experimental drug for two rare muscle diseases after it failed to show meaningful benefits, the Swiss drugmaker said in community letters.

In the letters, ‌dated March ⁠19, ⁠the company said it would no longer pursue the drug, emugrobart, for spinal muscular atrophy, or SMA, and facioscapulohumeral muscular dystrophy, known as FSHD.

Both the conditions are rare genetic diseases that ​cause progressive muscle weakness and ⁠can severely ‌limit a person's ability to ​walk and ​carry out daily tasks.

Emugrobart ⁠is designed to block myostatin, a ​protein that naturally limits muscle growth.

Roche ​said the drug showed a favorable safety profile and reduced mature myostatin levels, but this did not translate into meaningful gains in muscle growth or function ‌across study participants.

The results were not strong or consistent enough to ​move into late-stage ​trials, the ⁠company said.

In SMA, emugrobart was tested in combination with risdiplam and compared against risdiplam alone, ​while in FSHD it was tested against a placebo.

The mid-stage trial development of emugrobart for obesity, however, will continue as planned, Roche said.

Also Read: Roche Expands AI Capabilities with 2,100+ Nvidia Chips to Accelerate Drug Development

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Article Source : Reuters

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