KIR genotype frequency in childhood ALL cases and controls in all subjects and in ethnic subgroups.KIR genotype frequency in childhood ALL cases vs controls is shown for (A) all subjects (cases, n = 212; controls, n = 231), (B) Hispanics only (cases, n = 114; controls, n = 128), and (C) non-Hispanic whites only (cases, n = 76; controls, n = 86). P values were calculated using unconditional logistic regression analysis between ALL cases and controls. Error bars represent SE.