Patient Characteristics
From January 01, 2017 to October 30, 2019, a total of 28,868 cases of Chinese solid tumor types were included in this study, including biliary carcinoma (4.77%), liver cancer (7.44%), lung cancer (40.23%) and colorectal cancer (14.05%). 374 cases (1.30%) with IDHmutations were identified. Patients with IDH mutation < 60 years old were 49.7% (n=186). Among all the IDH mutations cases, 80 (21.4%) were biliary tract cancer, 80 (21.4%) were lung cancer, 57 (15.2%) were liver cancer, and 42 (11.2%) were colorectal cancer (Table 1 ).