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Strong efficacy signals in a new indication can re-rate a collaboration-heavy asset, though real upside depends on regulatory progression and subsequent pivotal data; historical precedent (e.g., other biologics expanding indications) shows positive readouts can lift stock modestly before regulatory milestones.
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Positive CROSSING Phase 3 results show TEZSPIRE delivered durable histologic remission and endoscopic improvement through 52 weeks in eosinophilic esophagitis (EoE). If validated for EoE, this could broaden TEZSPIRE's addressable market beyond asthma and CRSwNP, with data presentation at UEGW 2026 serving as a near-term catalyst for the Amgen-AstraZeneca collaboration's value.
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