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Molecular heterogeneity of glucose-6-phosphate dehydrogenase deficiency in Gaza Strip Palestinians.
MedLine Citation:
PMID:  22770933     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
BACKGROUND: Glucose-6-phosphate dehydrogenase (G6PD) deficiency, affecting more than 500 million people worldwide, is one of the most common of inherited disorders. There are 186 G6PD mutations published, with mutational clustering within defined ethnic/racial groups. However comprehensive molecular characterization of ethnically associated G6PD mutants and their clinical implications are lacking. DESIGN AND METHODS: Eighty unrelated Palestinian children hospitalized for hemolysis were studied. G6PD activity was determined by quantitative spectrophotometry and G6PD mutations were analyzed by sequencing of gDNA. RESULTS: 65 of 80 children (81%) had G6PD deficiency, accounting for most of the hemolytic disease in this age group. G6PD Mediterranean(c.563T), African G6PD A-(c.202A/c.376G), and G6PD Cairo(c.404C) were common with relative allele frequencies of 0.33 [1], 0.26, and 0.18 respectively. Two other variants were discovered, G6PD Beverly Hills(c.1160A) mutation, and a novel G6PD missense mutation c.536G>A (Ser179Asn), designated G6PD "Gaza". Three samples exhibited enzyme deficiency without detectable exonic or exon/intron boundary mutations. CONCLUSION: G6PD deficiency accounts for the majority of diagnoses for hemolysis in Palestinian children (81%), providing support for newborn G6PD deficiency screening programs. We report unanticipated molecular heterogeneity of G6PD variants among Gaza Strip Palestinians greater than reported in neighboring Arab populations. We report a high proportion of affected children with G6PD Cairo, which was observed previously in only a single Egyptian, and a novel mutation G6PD "Gaza".
Authors:
Mahmoud Sirdah; N Scott Reading; Hariprasad Vankayalapati; Sherrie L Perkins; Mohammad E Shubair; Lina Aboud; David Roper; Josef T Prchal
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-7-5
Journal Detail:
Title:  Blood cells, molecules & diseases     Volume:  -     ISSN:  1096-0961     ISO Abbreviation:  -     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-7-9     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9509932     Medline TA:  Blood Cells Mol Dis     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier Inc. All rights reserved.
Affiliation:
ARUP Laboratories and University of Utah School of Medicine, Salt Lake City, UT, USA; Al Azhar University, Gaza, Palestine.
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