Xilio Therapeutics, Inc., a clinical-stage biotechnology company, engages in the discovery and development of tumor-activated immuno-oncology therapies. The company's checkpoint inhibitor program includes XTX101, an investigational Fc-enhanced, tumor-activated anti-CTLA-4 mAb that is in Phase 2 clinical trial for patients with advanced solid tumors. It also develops cytokine programs, which comprises XTX202, a tumor-activated beta-gamma biased IL-2, currently under Phase 2 clinal trials; and XTX301, an investigational tumor-activated, engineered IL-12 molecule, currently under Phase 1 studies. The company was founded in 2016 and is headquartered in Waltham, Massachusetts.
Company profile updated October 11, 2026.
As of October 9, 2026. Daily closing data may differ from the live quote shown in the dashboard.
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