Regulatory approval

Published by the Health Canada. Approved

Vyloy (zolbetuximab for injection), in combination with fluoropyrimidine- and platinum-containing chemotherapy, is indicated for the first-line treatment of adult patients with locally advanced unresectable or metastatic human epidermal growth factor receptor 2 (HER2)-negative gastric or gastroesophageal junction (GEJ) adenocarcinoma whose tumours are Claudin (CLDN) 18.2 positive as determined by a validated test.

This is written in the approval document.

Citation

Astellas Pharma Canada, Inc. Vyloy (zolbetuximab) [product monograph]. Health Canada website. https://pdf.hres.ca/dpd_pm/00082802.PDF. Published December 2025. Accessed April 2026.

Therapeutic response

Precision oncology relationships for therapeutic response derived from this regulatory approval.

Organizations	Biomarkers	Cancer types	Therapies
HC (1)	CLDN18.2 >= 75%, HER2-negative	Adenocarcinoma of the Gastroesophageal Junction	Capecitabine, Oxaliplatin, Zolbetuximab