Allele distribution and minor allele frequency of 5 SNPs in the study patients and controls. A and B are SNP LOGO of 545 blood-unrelated Chinese patients and 1008 healthy controls respectively. (1, 3, 5, 7, 9 shows the minor allele proportion of five SNPs, and 2, 4, 6, 8, 10 shows the major one). C. Minor allele frequency of five SNPs in patients (F_A) and controls (F_U).