CD274 and gastrointestinal stromal tumor: Similarly though study by Singh et al. on patients with advanced GIST [9], showed some response to CPIs, both our patients have progressed on immunotherapy even though one of them had high PDL1 expression, TPS = 80%, hence reiterating the fact that response to CPI in sarcoma may be histology specific and that no conclusive biomarker has yet been identified so far which can predict response to immunotherapy in sarcoma.