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Ultragenyx's rare disease drug fails in late-stage trial; shares plunge
Source: reuters.com
Healthcare & BiotechCompany FundamentalsAnalyst InsightsCorporate Guidance & Outlook

Ultragenyx reported its experimental drug for a rare genetic neurodevelopmental disorder missed the primary endpoint in a late-stage trial. Shares fell 40% in aftermarket trading, signaling major execution risk despite the continued development uncertainty.
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