SLC31A1 and Thrombocytopenia: We should cautiously point out that, in the study population of Chinese NSCLC patient cohort, we observed slight deviation from HWE for the genotypic distribution of two clinically relevant SNPs of SLC31A1, rs4979223 (P = 0.026) in 5′flanking region and rs10759637 (P = 0.011) in 3′UTR, with about 43 kb distance but nearly complete linkage disequilibrium, which was due to significant underrepresentation of their putatively disadvantageous heterozygotes in patients that were pharmacogenetically associated with poor outcomes such as severe thrombocytopenia and shorter survival.