APOBEC3H and neoplasm: To support the results, we found that the APOBE3C and APOBEC3H were co-expressed in both lung tumor and adjacent normal tissues based on TCGA database (ρ = 0.27, P = 5.51 × 10−18 in tumor tissues; ρ = 0.59, P = 1.60 × 10−11 in adjacent normal tissues) (Supplementary Fig. S2).