Early-Onset Familial Hypoaldosteronism, is also known as early-onset familial hyperreninemic hypoaldosteronism. An important gene associated with Early-Onset Familial Hypoaldosteronism is CYP11B2 (Cytochrome P450 Family 11 Subfamily B Member 2). Affiliated tissues include adrenal gland, and related phenotypes are failure to thrive and hypotension