Abstract:
:We have identified a common novel mutation (Q354X) in the argininosuccinate lyase (ASL) gene in Saudi patients with argininosuccinic aciduria (ASAuria; McKusick 207900). The two index patients were siblings, had a neonatal onset of the disease and were diagnosed based on the clinical presentation and confirmed by analysis of their dried blood spots (DBS) by tandem mass spectrometry (MS/MS). The ASL gene was then analysed by direct sequencing. A further 28 patients with a confirmed diagnosis of ASAuria based on MS/MS of their DBS were tested by sequencing for the presence of the Q354X mutation. This mutation was found in 14 out of the 28 patients (50%) tested. Our work indicates that the Q354X allele is common, may account for 50% of the abnormal ASL genes in the Saudi population, and is likely to be associated with the neonatal form of the disease. We recommend that all patients diagnosed with ASAuria in Saudi Arabia or of Arab origin be tested for this mutation and for Q116X, which has been described previously. In addition, further analysis is needed to identify other underlying disease mutations for ASAuria in the Saudi population.
journal_name
J Inherit Metab Disjournal_title
Journal of inherited metabolic diseaseauthors
Al-Sayed M,Alahmed S,Alsmadi O,Khalil H,Rashed MS,Imtiaz F,Meyer BFdoi
10.1007/s10545-005-0081-2keywords:
subject
Has Abstractpub_date
2005-01-01 00:00:00pages
877-83issue
6eissn
0141-8955issn
1573-2665journal_volume
28pub_type
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