MITOCHONDRIAL DNA DEPLETION SYNDROME 13 (ENCEPHALOMYOPATHIC TYPE); MTDPS13 | |
615471
OMIM = Online Mendelian Inheritance of Men | |
369897 | |
F-box/LRR-repeat protein 4 | |
6q16.1-q16.2 |
|
E88.8 | |
very rare (< 100 patients) autosomal recessive mutation in the FBXL4 gene | |
Laboratory findings | Alanine inc (plasma) Ammonia normal/inc (serum) Creatine kinase normal/inc (serum) L-Lactic acid inc (serum) L-Lysine normal/inc (plasma) Transaminases (ASAT/ALAT) inc (serum) |
Symptoms | ataxia cardiac arrhythmia, dysrhythmia cardiomyopathy cardiomyopathy, hypertrophic cataract cerebellar atrophy or hypoplasia cerebral atrophy colitis or enterocolitis developmental delay dysmorphism dysphagia dystonia encephalopathy failure to thrive growth retardation, poor growth hyperammonemia hypotonia infections (severe or recurrent) intellectual disability/intellectual developmental disorder lactic acidosis leukodystrophy microcephaly (<2 SD for age) MRI, brain, abnormalities [-] muscle atrophy neutropenia (decreased neutrophils) nystagmus onset, childhood onset, infancy onset, neonatal seizures small for gestational age (SGA), intrauterine growth retardation (IUGR) weight loss white matter changes, abnormalities |