• Ups. J. Med. Sci. · Nov 2019

    Case Reports

    A novel VARS2 gene variant in a patient with epileptic encephalopathy.

    • Lucija Ruzman, Ivana Kolic, Jelena Radic Nisevic, Antonija Ruzic Barsic, Ingrid Skarpa Prpic, and Igor Prpic.
    • Child Neurology and Child Psychiatry Department, Pediatric Clinic, Clinical Hospital Center Rijeka, Rijeka, Croatia.
    • Ups. J. Med. Sci. 2019 Nov 1; 124 (4): 273-277.

    AbstractBackground: Mitochondrial disorders are heterogeneous clinical syndromes caused by defective activity in the mitochondrial respiratory chain, resulting in a faulty oxidative phosphorylation system. These inherited disorders are individually rare, and furthermore they are phenotypic variables. The genetically characterized mitochondrial disorders are rarely associated with epileptic encephalopathies.Case presentation: We present the clinical phenotype, biochemical analysis, and electrographic and neuro-radiological features of a 5-month-old girl with epileptic encephalopathy, microcephaly, severe psychomotor delay, hypertrophic cardiomyopathy, and abnormal MRI scan. Using whole-genome sequencing technique, compound heterozygous mutations of the VARS2 gene were revealed, with one previously unreported frameshift mutation.Conclusion: Our report extends the phenotypic spectrum of VARS2-related disorders with an initial presentation of epileptic encephalopathy and early death due to malignant arrhythmia.

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