Gabriella Miller Kids First Pediatric Research Program (Kids First) cancer study participant demographics. A, Reported sex of Kids First cancer study participants. B, Reported race of Kids First cancer study participants. The “Other” category represents individuals of American Indian or Alaska Native descent (0.5%), individuals of more than 1 race (0.5%), or individuals of Native Hawaiian or Other Pacific Islander descent (0.1%). C, The reported ethnicity of Kids First cancer study participants.