Our systematic search identified four studies examining the IL13 rs1800925 SNP (n = 931); synthesis of the available data depicted the association of the common rs1800925 SNP with reduced AD risk (OR (95% CI): 0.60 (0.48–0.75); I2 = 0.0%) (Figure 2; Supplementary Table S1). The gene discussed is IL13; the disease is Alzheimer disease.