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Xilio Therapeutics Announces First Patient Dosed in Phase 1/2 Clinical Trial of XTX501 in Patients with Metastatic NSCLC

$XLOPress releaseOct 26, 2026, 7:30 AM ETRead the release

Xilio Therapeutics dosed the first patient in its Phase 1/2 trial of XTX501, a PD-1/masked IL-2 bispecific, in patients with metastatic NSCLC previously treated with anti-PD(L)-1 therapy. The first-in-human, open-label trial is enrolling at multiple U.S. sites (NCT07688577), and the company will present a trial-in-progress poster at the SITC Annual Meeting November 4-8, 2026.

Key figures

Drug Name
XTX501
Phase Of Trial
Phase 1/2
Indication
metastatic NSCLC post anti-PD(L)-1
Trial identifier
NCT07688577
Initial data timing
Q4 2027

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