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Biogen and Denali halt BIIB122 development after Phase 2b study fails to slow early Parkinson's progression

Market News
21 May 2026
Na
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Bearish
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Biogen and Denali announced that their Phase 2b LUMA study of BIIB122, a drug targeting early-stage Parkinson's disease, did not meet its primary or secondary endpoints, showing no slowing of disease progression compared to placebo. Despite good safety and biomarker results, the companies will discontinue BIIB122 development for idiopathic Parkinson's disease but will continue a related Phase 2a study in patients with a genetic LRRK2 variant. The findings will be shared at an upcoming scientific conference, contributing to Parkinson's research. Data from the ongoing BEACON study is expected in early 2027, which may inform future therapeutic strategies.

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