The U.S. Food and Drug Administration (FDA) has approved Agilent Technologies’ (NYSE: A) Dako PD-L1 IHC 22C3 pharmDx assay for an expanded use. The expended use is expected to help physicians to identify cervical cancer patients who are most likely to benefit from treatment with Merck’s (MRK) checkpoint inhibitor lmmuno-oncology product Keytruda PD-L1 IHC 22C3 pharmDx assay was FDA approved for non-small cell lung cancer and subsequently expanded approval for gastric …