Meta-analysis combining publicly available data with our current study confirmed in over 12,000 subjects that none of the APOA2 tag SNPs were associated with type 2 diabetes (Additional files 2, 3, 4) and there appeared to be no study heterogeneity (Cochran's Q: P > 0.72; I2 = 0% for all variants). The gene discussed is APOA2; the disease is type 2 diabetes mellitus.