The data from the chosen studies, based on diverse autoimmune cohorts (ITP, SLE, RA, GBS, CD), revealed no statistically significant association between FCGR2A H131R and disease susceptibility across all genetic models tested (dominant, recessive, overdominant, allelic contrast) (Supplementary Tables S1-S4). This evidence concerns the gene FCGR2A and autoimmune thrombocytopenic purpura.