MITOCHONDRIAL COMPLEX IV DEFICIENCY | |
CYTOCHROME c OXIDASE DEFICIENCY | |
220110
OMIM = Online Mendelian Inheritance of Men | |
254905 | |
cytochrome c oxidase | |
1.9.3.1 | |
mutations in more than 30 genes |
|
E88.8 | |
rare autosomal recessive mitochondrial Mutations in several mitochondrial COX genes | |
Laboratory findings | Ketone bodies (urine) inc (urine) L-Lactic acid normal/inc (cerebrospinal fluid) L-Lactic acid inc (urine) L-Lactic acid normal/inc (blood) pH dec (blood) |
Symptoms | epilepsy muscle weakness renal failure, acute/chronic anemia ataxia basal ganglia, changes, lesions, calcifications (MRI, CT) cardiomegaly cardiomyopathy cardiomyopathy, hypertrophic dyspnea early death encephalopathy failure to thrive Fanconi syndrome feeding difficulties, poor feeding hearing defect, deafness hepatomegaly (large liver) hypotonia ketosis, ketoacidosis lactic acidosis limb abnormalities, limb deformities liver involvement or dysfunction mental retardation motor retardation myopathy neurological deterioration onset, neonatal poor crying ptosis (drooping eyelid) respiratory insufficiency screaming or crying, abnormal seizures swallowing difficulties tubulopathy |