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MITOCHONDRIAL COMPLEX IV DEFICIENCY

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