We used the following search terms: “Duchenne muscular dystrophy”, “Becker muscular dystrophy”, “dystrophic cardiomyopathy”, “dystrophin deficient cardiomyopathy”, “renin-angiotensin system”, “angiotensin receptor”, “cardiac fibrosis”, “myocardial fibrosis”, “angiotensin converter enzyme inhibitors”, and “angiotensin receptor blockers”. This evidence concerns the gene ACE and Duchenne muscular dystrophy.