Open AccessRole of DYSF Genetic Variant in Limb Girdle Muscular Dystrophy: A Case Report
Author(s) -
Hadis Malek,
Khadijeh Shahrokhabadi,
Saeid Ghavami,
Mohsen Taheri,
Ehsan Ghayoor Karimiani
Publication year - 2021
Publication title -
gene, cell and tissue
Language(s) - English
Resource type - Journals
eISSN - 2345-6841
pISSN - 2345-6833
DOI - 10.5812/gct.115993
Subject(s) - proband , limb girdle muscular dystrophy , muscular dystrophy , exome sequencing , genetics , sanger sequencing , genetic counseling , medicine , biology , mutation , gene
Muscular dystrophy is a hereditary degenerative muscle disease which progressively reduces the strength of the muscles that control movement. In this study, we tried to investigate genetic variants in muscular dystrophy using sequencing of whole exons. Case Presentation: A family with two affected patients with muscular dystrophy was referred for genetic counseling followed by exome sequencing testing on the proband. After filling out informed consent, blood samples were obtained from each available family member. Candidate genetic variant was confirmed using Sanger sequencing. Conclusions: Exome data analysis revealed a variant of c.2864 + 1G > A in the proband, which altered the exon-intron 26 splice site within the DYSF gene. Genetic changes in this gene are known to be associated with muscular disorders, such as limb-girdle muscular dystrophy and other dysferlinopathies. Assessment of this genetic variant in the patient's sister also showed homozygous variant. Since the patient's sister was married to her cousin, the same variant was tested in her husband, which was normal homozygous. NGS-based techniques, including whole-exome sequencing, can identify the molecular genetic basis of the disease in families with limb-girdle muscular dystrophy. The results can be helpful in identifying potential carriers in the family and in prenatal diagnosis to the families involved.