familial restrictive cardiomyopathy obsolete familial isolated restrictive cardiomyopathy https://github.com/monarch-initiative/mondo/issues/5114 https://github.com/monarch-initiative/mondo/issues/6740 https://github.com/monarch-initiative/mondo/issues/6751 https://github.com/monarch-initiative/mondo/issues/6877 https://github.com/monarch-initiative/mondo/issues/7693 https://www.malacards.org/card/familial_isolated_restrictive_cardiomyopathy true familial or idiopathic restrictive cardiomyopathy OBSOLETE. Familial restrictive cardiomyopathy is a genetic form of heart disease, in which the heart muscle is stiff and cannot fully relax after each contraction. Impaired muscle relaxation causes blood to back up in the atria and lungs, which reduces the amount of blood in the ventricles. Orphanet:75249 MONDO:0019150