Agilent Technologies has received an expanded CE Mark that will allow its PD-L1 IHC 22C3 pharmDx assay -- a companion diagnostic for the Keytruda chemotherapy agent -- to be used for esophageal cancer.
The test may now be used to identify esophageal cancer patients eligible for treatment with Keytruda, a monoclonal antibody developed by Merck that boosts the body's ability to fight cancer cells.