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Disappointing trial results significantly impacted investor sentiment and share price. A similar occurrence led to decreased stock value in previous biotech failures, illustrating investor sensitivity to clinical outcomes.
What happened, with direct paths to the underlying reporting
Ultragenyx shares fell 42% after disappointing trial results. Phase 3 studies of setrusumab did not meet primary endpoints. Secondary endpoints showed improvement in bone mineral density. Analysts express caution about setrusumab's future potential. William Blair maintains an Outperform rating; expects longer-term upside.
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