Pembrolizumab is a systemic treatment option for adult and pediatric patients with unresectable or metastatic, microsatellite instability-high (MSI-H) or mismatch repair deficient (dMMR) solid tumors...NCCN recommends this treatment only for patients with MSI-H/dMMR or tTMB-high chondrosarcomas, chordomas, Ewing sarcomas, and osteosarcoma.

KEYTRUDA is a programmed death receptor-1 (PD-1)-blocking antibody indicated:...for the treatment of adult and pediatric patients with unresectable or metastatic tumor mutational burden-high (TMB-H) [≥10 mutations/megabase (mut/Mb)] solid tumors, as determined by an FDA-approved test, that have progressed following prior treatment and who have no satisfactory alternative treatment options.