Myopathy, Lactic Acidosis, and Sideroblastic Anemia 3, also known as mlasa3, is related to sideroblastic anemia with b-cell immunodeficiency, periodic fevers, and developmental delay and cardiomyopathy, infantile hypertrophic. An important gene associated with Myopathy, Lactic Acidosis, and Sideroblastic Anemia 3 is MT-ATP6 (Mitochondrially Encoded ATP Synthase Membrane Subunit 6).