Distributions of selected clinical features among the pan-cancer cohort illustrated in Fig 1. Age is stratified by quartiles. Grade information is not available for BRCA and COAD cohorts. Stage information is not available for the GBM cohort. BMI, Tobacco use, and Alcohol use data is not available for BRCA, COAD, and HGSC cohorts. For survival plots, time starts at diagnosis. Additional clinical features, such as race and ethnicity, are available for exploration on the ProTrack pan-cancer sample dashboard.