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BioMarin Provides Update on Phase 3 Trial for BMN 401 in Children Aged 1-12 With ENPP1 Deficiency

$BMRNPress releaseMay 18, 2026, 9:05 AM ETRead the release

BioMarin's pivotal Phase 3 ENERGY 3 trial for BMN 401 in children with ENPP1 deficiency met only one of two co-primary endpoints. While the drug successfully increased plasma inorganic pyrophosphate (PPi) levels, it failed to show improvement in Radiographic Global Impression of Change (RGI-C) scores, the key clinical measure of rickets severity.

Key figures

Drug Name
BMN 401
Phase Of Trial
Phase 3
Age range
1-12 years
Study name
ENERGY 3
Participants
27

AI analysis

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    BMRN: BioMarin Provides Update on Phase 3 Trial for BMN 401 in Children Aged 1-12 With ENPP1 Deficiency — AI Analysis | Signal8