The results of the study were shown by radar plots that among 10 different tumor types, only IDO1 expression in KICH and COAD was positively correlated with MSI, while others including TGCT, OV, LUSC, HNSC, GBM, ESCA, CHOL, and CESC were negatively correlated (Fig. 5B). The gene discussed is IDO1; the disease is neoplasm.