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Vanda Pharmaceuticals Announces Orphan Drug Designation in Japan for Imsidolimab in Generalized Pustular Psoriasis

$VNDAPress releaseMay 27, 2026, 7:00 AM ETRead the release

Vanda Pharmaceuticals announced that Japan's Ministry of Health, Labour and Welfare granted orphan drug designation to imsidolimab for generalized pustular psoriasis (GPP). The designation unlocks development incentives in Japan, including R&D subsidies and the potential for up to 10 years of market exclusivity following approval.

Key figures

Drug Name
imsidolimab
Japan gpp patients
2200
Market exclusivity years
10

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