Myopathy, Lactic Acidosis, and Sideroblastic Anemia 1, also known as mitochondrial myopathy and sideroblastic anemia, is related to myopathy, lactic acidosis, and sideroblastic anemia 3 and sideroblastic anemia. An important gene associated with Myopathy, Lactic Acidosis, and Sideroblastic Anemia 1 is PUS1 (Pseudouridine Synthase 1), and among its related pathways/superpathways are tRNA processing and Pyrimidine metabolism and related diseases. Affiliated tissues include bone marrow and skeletal muscle, and related phenotypes are high palate and hypotonia