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News · ■ Unclear/unknown · 1 source confirmed · 2026-09-29 14:03 UTC

XYone Therapeutics Announces First Patient Dosed in First-in-Human Clinical Trial of XYA02(AT2021), a Novel Antibody Drug Conjugate targeting MUC1-C

Why now

Thesis: Private clinical milestone, limited read-through

Catalyst to watch: Interim Phase 1b/2 data

Main risk: Early-stage trial may fail

Why it matters

A private biotech's Phase 1b/2 dosing is early-stage and not tied to a listed ticker.

Details

CANTON, Mass., Sept. 29, 2026 /PRNewswire/ -- XYone Therapeutics, Inc. ("XYone"), a clinical-stage biotechnology company, announced that the first patient has been dosed in the first-in-human Phase 1b/2 clinical trial of XYA02(also known as AT2021), the Company's lead antibody-drug...

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