FibroGen stock slumps 22% as DMD candidate fails in Phase III

30 August 2023

Shares of US biotech FibroGen (Nasdaq: FGEN) were down 22% at $0.995 pre-market today, after it announced disappointing top-line data from the Phase III LELANTOS-2 trial of pamrevlumab for the treatment of ambulatory patients with Duchenne muscular dystrophy (DMD) on background systemic corticosteroids.

FibroGen said that the study did not meet the primary endpoint of change in the North Star Ambulatory Assessment (NSAA) total score from baseline to week 52 (placebo-corrected mean difference -0.528 points; 95% CI -2.308 to 1.251; p=0.5553).

Secondary endpoints measured by change from baseline at week 52 in 4-stair climb velocity, 10-meter walk/run test, time to stand, time to loss of ambulation, and proportion of patients with greater than 10 seconds in the 10-meter walk/run test were also not met.

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