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- Title
Identifying inversions with breakpoints in the Dystrophin gene through long-read sequencing: report of two cases.
- Authors
Chen, Liqing; Luo, Xiaoping; Wang, Hongling; Tian, Yu; Liu, Yan
- Abstract
Background: Duchenne Muscular Dystrophy (DMD) is an X-linked disorder caused by mutations in the DMD gene, with large deletions being the most common type of mutation. Inversions involving the DMD gene are a less frequent cause of the disorder, largely because they often evade detection by standard diagnostic methods such as multiplex ligation probe amplification (MLPA) and whole exome sequencing (WES). Case presentation: : Our research identified two intrachromosomal inversions involving the dystrophin gene in two unrelated families through Long-read sequencing (LRS). These variants were subsequently confirmed via Sanger sequencing. The first case involved a pericentric inversion extending from DMD intron 47 to Xq27.3. The second case featured a paracentric inversion between DMD intron 42 and Xp21.1, inherited from the mother. In both cases, simple repeat sequences (SRS) were present at the breakpoints of these inversions. Conclusions: Our findings demonstrate that LRS is an effective tool for detecting atypical mutations. The identification of SRS at the breakpoints in DMD patients enhances our understanding of the mechanisms underlying structural variations, thereby facilitating the exploration of potential treatments.
- Subjects
DYSTROPHIN genes; MICROSATELLITE repeats; DUCHENNE muscular dystrophy; GENETIC mutation; GENES
- Publication
BMC Medical Genomics, 2024, Vol 17, Issue 1, p1
- ISSN
1755-8794
- Publication type
Article
- DOI
10.1186/s12920-024-01997-2