Current Updates on PD-L1 and HER2 Testing in Gastroesophageal Cancer: A Practical Approach
Gastroesophageal cancers are commonly diagnosed at advanced stages, which portend poor prognoses and have limited available therapeutic options. Numerous clinical trials have recently begun to evaluate the prognostic implications of new biomarkers in this clinical setting, including PD-L1, HER2, and microsatellite instability-high (deficient mismatch repair). This lecture will touch on the clinical indications of these biomarkers, how to interpret the associated immunohistochemical tests, and how the respective treatments impact the prognosis of these cancers.
