The Turkish Journal of Pediatrics 2017 , Vol 59 , Num 3
p.Val452Ile mutation of the SLC25A13 gene in a Turkish patient with citrin deficiency
Berna Şeker-Yılmaz 1 ,Deniz Kör 2 ,Gökhan Tümgör 3 ,Serdar Ceylaner 4 ,Neslihan Önenli-Mungan 2
1 Division of Pediatric Metabolism, Department of Pediatrics, Mersin City Hospital, Mersin, Turkey
2 Divisions of Pediatric Metabolism, Çukurova University Faculty of Medicine Adana, Turkey
3 Pediatric Gastroenterology, Department of Pediatrics Çukurova University Faculty of Medicine Adana, Turkey
4 Intergen Genetics Laboratory, Medical Genetics, Ankara, Turkey
DOI : 10.24953/turkjped.2017.03.012 Şeker-Yılmaz B, Kör D, Tümgör G, Ceylaner S, Önenli-Mungan N. p.Val452Ile mutation of the SLC25A13 gene in a Turkish patient with citrin deficiency. Turk J Pediatr 2017; 59: 311-314.

Citrin deficiency is an autosomal recessive metabolic disorder, which is caused by pathogenic mutations in the SLC25A13 gene on chromosome 7q21.3, as the causative gene that encodes the liver type aspartate/glutamate carrier isoform 2 (AGC2). One of the main clinical presentations is neonatal intrahepatic cholestatic hepatitis caused by citrin deficiency.

We report a Turkish child presented with prolonged neonatal jaundice associated with elevated plasma citrulline and galactosuria. NICCD was suspected at this point and mutation study of SLC25A13 showed that she was homozygous for the missense NM_014251.2:c.1354G>A (NP_055066.1:p.Val452Ile) (dbSNP: rs143877538) mutation. Dramatic response was observed to the dietary treatment with medium-chain triglycerides containing formula, ursodeoxycholic acid and fat-soluble vitamin supplementation.

The minor allele frequency of this variant was given as nearly as 0.01 in the South Asian population; it seems like a disease causing variant. This is the first report of this variant in the Turkish and European population. Keywords : citrin deficiency, prolonged neonatal jaundice, novel mutation

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