Term Name:	mitochondrial complex IV deficiency nuclear type 21
Synonyms:	MC4DN21
Definition:	A COX deficiency, benign infantile mitochondrial myopathy that has_material_basis_in homozygous mutation in the NDUFA4 gene on chromosome 7p21.3.
Ontology:	Human Disease [DOID:0070506]   ( DOID:0070506 )