Details

Autor(en) / Beteiligte

• Zhu, Y B
• Gan, J H
• Luo, J W
• Zheng, X Y
• Wei, S C
• Hu, D

Titel

Splicing mutation of a gene within the Duchenne muscular dystrophy family

Ist Teil von

• Genetics and molecular research, 2016-01, Vol.15 (2)

Ort / Verlag

Brazil

Erscheinungsjahr

2016

Quelle

MEDLINE

Beschreibungen/Notizen

• The aim of this study was to identify the mutation site and phenotype of the Duchenne muscular dystrophy (DMD) gene in a DMD family. The DMD gene is by far the largest known gene in humans. Up to 34% of the point mutations reported to date affect splice sites of the DMD gene. However, no hotspot mutation has been reported. Capture sequencing of second-generation exons was used to investigate the DMD gene in a proband. Sanger sequencing was performed for mutation scanning in eight family members. Scale-invariant feature transform and PolyPhen were applied to predict the functional impact of protein mutations. A hemizygous splicing mutation IVS44ds +1G-A (c.6438 +1G>A) that induces abnormal splicing variants during late transcription and produces abnormal proteins was located in intron 44. Four missense mutations (p.Arg2937Gln, p.Asp882Gly, p.Lys2366Gln, and p.Arg1745His) that are known multiple-polymorphic sites were found in the coding region of the DMD gene. A heterozygous c.6438+1G>A mutation was detected on the X chromosome of the proband's mother and maternal grandmother.