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BlossomHill Collaborates on CDx for EGFR C797S with Foundation Medicine

Oct 22, 2026, 7:25 AM EDT1 sourcesAI-analyzed

Why it may matterVerify against the original reporting

Collaboration for a CDx can unlock value by enabling precision-therapy positioning and potentially accelerating regulatory engagement; catalysts hinge on SOLARA readouts and CDx validation progress, common near-term upside drivers in biotech collaborations.

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BlossomHill Therapeutics announced a collaboration with Foundation Medicine to develop a companion diagnostic for the EGFR C797S resistance mutation, aligned with the SOLARA Phase 1/2 trial of BH-30643 in EGFR-mutant NSCLC. The CDx could enable precise patient selection and accelerate regulatory discussions, potentially supporting faster adoption and valuation upside if SOLARA shows favorable efficacy signals.

BLSM partners with Foundation Medicine to develop a CDx for EGFR C797S.
CDx aims to identify patients likely to benefit from BH-30643.
Collaboration uses SOLARA trial data to validate the assay.
Represents BLSM's push into precision oncology and companion diagnostics.

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