Additional file1 : Supplementary Methods. Table S1. Baseline characteristics of all cohort subjects. Figure S1. Comparison of T-cell receptor beta-chain (TCRβ) repertoire space between IgAN, non-IgAN, and healthy group. Figure S2. Complementarity determining region (CDR3) length distribution and principal component analysis (PCA) for TRBV or TRBJ gene usage in IgAN, non-IgAN, and healthy group. Figure S3. Comparison of all TRBV or TRBJ gene usages between IgAN, non-IgAN, and healthy group