Identification of Two Novel Variants of the DMD Gene in Chinese Families with Duchenne Muscular Dystrophy.

ABSTRACT:

Background

Duchenne muscular dystrophy (DMD), an X-linked recessive neuromuscular disorder, is caused by pathogenic variants in the DMD gene encoding a large structural protein in muscle cells.

Methods

Two probands, a 6-year old boy and a 1-month old infant, respectively, were clinically diagnosed with DMD based on elevated levels of creatine kinase and creatine kinase isoenzyme. CNVplex and whole exome sequencing (WES) were performed for causal variants, and Sanger sequencing was used for verification.

Results

CNVplex found no large deletions or duplications in the DMD gene in both patients, but WES discovered a single-nucleotide deletion in exon 48 (NM_004006.2:c.6963del, p.Asp2322ThrfsTer16) in the proband of pedigree 1, and a nonsense mutation in exo

SUBMITTER: Wu J 

PROVIDER: S-EPMC10441636 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature