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BETA-KETOTHIOLASE DEFICIENCY; ALPHA-METHYLACETOACETIC ACIDURIA

BETA-KETOTHIOLASE DEFICIENCY; ALPHA-METHYLACETOACETIC ACIDURIA
ACIDEMIA, 3-KETOTHIOLASE DEFICIENCY, 3-OXOTHIOLASE DEFICIENCY, T2 DEFICIENCY, MITOCHONDRIA
203750
OMIM = Online Mendelian Inheritance of Men
134
Acetyl-CoA acetyltransferase, mitochondrial
11q22.3
E71.1
rare (>100 cases)
autosomal recessive
mutation in the acetyl-CoA acetyltransferase-1 gene (ACAT1)
Laboratory findings2-Butanone inc (urine)
2-Methylacetoacetic acid normal/inc (urine)
Ketone bodies (urine) inc (urine)
  Tiglylglycine inc (urine)
    2-Methyl-3-hydroxybutyric acid inc (urine)
    3-Hydroxybutyric acid normal/inc (urine)
    3-Hydroxyisovaleric acid inc (urine)
    3-Hydroxyisovalerylcarnitine (C5-OH) inc (blood)
    3-Hydroxypropionic acid inc (urine)
    3-Methylcrotonylglycine inc (urine)
    6-Methyluracil inc (urine)
    Acetoacetic acid inc (urine)
    Acylcarnitine (C2) inc (urine)
    Ammonia normal/inc (blood)
    D-Glucose normal/dec (serum)
    Glycine normal/inc (plasma)
    pCO2 normal/dec (blood)
    Tiglyl/3-Methylcrotonylcarnitine (C5:1) inc (blood)
    Uric acid normal/inc (plasma)
Symptomscoma
ketosis, ketoacidosis
  acetone-like odor
   basal ganglia, changes, lesions, calcifications (MRI, CT)
   cardiomyopathy, hypertrophic
   failure to thrive
   feeding difficulties, poor feeding
   headache (severe, recurrent or occipital, migraine)
   hepatomegaly (large liver)
   hypertonia, spasticity
   irritability
   lethargy, drowsiness, apathy
   liver involvement or dysfunction
   mental retardation
   metabolic acidosis
   motor retardation
   respiratory distress
   seizures
   tachypnea, hyperpnea, dyspnea, hyperventilation
   vomiting
    Amino acids, plasma
    cardiomyopathy
    chorea or athetosis
    diarrhea
    dystonia
    episodic course (clinical symptoms)
    hyperammonemia
    hypoglycemia
    hypotonia
    MRI, brain, abnormalities [-]
    no clinical symptoms (probably)
    onset, childhood
    onset, infancy
    onset, neonatal
    Organic acids, urine
    strokelike episodes
    unusual odor / odour