A novel mutation in ARG1 gene is responsible for arginase deficiency in an Asian family

Jozef L. Hertecant, Lihadh I. Al-Gazali, Noushad S. Karuvantevida, Bassam R. Ali

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

Argininemia is a rare autosomal recessive metabolic disorder caused by a deficiency in the arginase enzyme, which is the final enzyme in the urea cycle and responsible for the hydrolysis of arginine to urea and ornithine. The disease becomes symptomatic during childhood and is characterized by progressive spastic quadriplegia, progressive mental impairment, growth retardation, and periodic episodes of hyperammonemia. At least 19 distinct mutations in the ARG1 gene have been identified indicating the molecular heterogeneity of this condition. We report a homozygous novel mutation (c.93 delG) in the ARG1 gene from 3 affected children of a Pakistani family living in the United Arab Emirates. The mutation is expected to lead to a frame shift after the thirtieth residue and a stop codon at residue 44 (p.T30fsX14). Therefore, this mutation is expected to result in complete loss-of-function of the arginase enzyme and therefore is the mostly likely cause of argininemia in this family.

Original languageEnglish
Pages (from-to)1601-1603
Number of pages3
JournalSaudi Medical Journal
Volume30
Issue number12
Publication statusPublished - Dec 2009

ASJC Scopus subject areas

  • General Medicine

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