SNPs associated with C3 and C4 levels from two-stage GWAS study in Chinese population.

a. Genomic position is based on NCBI build 36.
b. aa indicates serum complement levels for homozygous carriers of minor alleles, Aa indicates for heterozygous carriers, and AA indicates for homozygous carriers of major alleles.
c. P values andβ-coefficient are based on multi-linear regression analysis for an addictive effect, and adjusted for age, smoking, and logBMI. The combined P s are calculated based on the regression model, adjusting for the covariates and stage information.
d. The presented C4 levels were back-transformed.