AGTR1 and cardiomyopathy: Among the four studies included in our meta-analysis that investigated the association between AGTR1 A1166C polymorphisms and the risk of cardiomyopathy, no significant association was observed when analyzing the allelic model A vs C (OR = 0.69, 95% CI = 0.46–1.03, Fig 4A) and the recessive model AA vs CA+CC (OR = 0.89, 95% CI = 0.34–2.30, Fig 4C).