News Related to Esophageal Squamous Cell Carcinoma

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CStone Receives FDA Clearance to Advance CS2009 Trispecific Antibody to Phase II Trials

Jun 12, 2026

The FDA has cleared CStone Pharmaceuticals' investigational new drug application to begin a Phase II trial of its trispecific antibody CS2009 in advanced solid tumors. The multicenter trial will evaluate monotherapy and combination regimens across nine cancer types in Australia, China, and the U.S. Initial Phase I data showed a favorable safety profile and encouraging antitumor activity.

FDA Approves Agilent's PD-L1 Companion Diagnostic for Esophageal Cancer

Mar 26, 2026

The FDA has approved Agilent's PD-L1 IHC 22C3 pharmDx as a companion diagnostic for identifying esophageal cancer patients eligible for Merck's KEYTRUDA immunotherapy. This marks the eighth FDA-approved indication for this diagnostic test with KEYTRUDA. The test helps identify patients whose tumors express PD-L1 for potential treatment with the anti-PD-1 therapy.