Introduction
esophageal cancer, ESCC
OESOPHAGEAL CANCER, ESOPHAGEAL SQUAMOUS CELL CARCINOMA
Esophageal squamous cell carcinoma (ESCC) is the dominant (~ 85%) histological subtype of esophageal cancer globally [A few phase 3 studies provide evidence for advanced ESCC treatments in the Japanese subgroup. Japanese subpopulation data from phase 3 trials for advanced esophageal cancer are limited to KEYNOTE-181 and ATTRACTION-3 trials that assessed second-line pembrolizumab or nivolumab monotherapy, respectively [