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Exon Deletion Pattern in Duchene Muscular Dystrophy in North West of Iran

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Specialty Pediatrics
Date 2015 Mar 14
PMID 25767538
Citations 4
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Abstract

Objective: Duchene and Becker Muscular Dystrophy (DMD/ BMD) are x-linked disorders that both are the result of heterogeneous mutations in the dystrophin gene. The frequency and distribution of dystrophin gene deletions in DMD/ BMD patients show different patterns among different populations. This study investigates the deletion rate, type, and distribution of this gene in the Azeri Turk population of North West Iran.

Materials &methods: In this study, 110 patients with DMD/ BMD were studied for intragenic deletions in 24 exons and promoter regions of dystrophin genes by using multiplex PCR.

Results: Deletions were detected in 63 (57.3%) patients, and around 83% localized in the mid-distal hotspot of the gene (on exons 44-52), 21 cases (33.3 %) with single-exon deletions, and 42 cases (66.6%) with multi-exonic deletions. The most frequent deleted exons were exon 50 (15 %) and exon 49 (14%). No deletion was detected in exon 3.

Conclusion: This study suggests that the frequency and pattern of dystrophin gene deletions in DMD/ BMD in the Azeri Turk population of North West Iran occur in the same pattern when compared with other ethnic groups.

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Using CRISPR/Cas9 System to Knock out Exon 48 in Gene.

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The First Comprehensive Cohort of the Duchenne Muscular Dystrophy in Iranian Population: Mutation Spectrum of 314 Patients and Identifying Two Novel Nonsense Mutations.

Zamani G, Bereshneh A, Malamiri R, Bagheri S, Moradi K, Ashrafi M J Mol Neurosci. 2020; 70(10):1565-1573.

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Whole genome sequencing reveals a 7 base-pair deletion in DMD exon 42 in a dog with muscular dystrophy.

Nghiem P, Bello L, Balog-Alvarez C, Lopez S, Bettis A, Barnett H Mamm Genome. 2016; 28(3-4):106-113.

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