AGTR1 and familial dilated cardiomyopathy: Associations were detected between AGTR1 polymorphisms and DCM risk under the allelic model and dominant model, with pooled ORs of 0.548 (A vs C: 95% CI = 0.362–0.828; P = 0.004) and 0.488 (AA+CA vs CC: 95% CI = 0.311–0.766; P = 0.002), respectively.