Comprehensive analysis via exome sequencing uncovers genetic etiology in autosomal recessive nonsyndromic deafness in a large multiethnic cohort

Creative Commons License

Bademci G., Foster J., Mahdieh N., Bonyadi M., DUMAN D., Cengiz F. B., ...Daha Fazla

Genetics in Medicine, cilt.18, sa.4, ss.364-371, 2016 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 18 Sayı: 4
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1038/gim.2015.89
  • Dergi Adı: Genetics in Medicine
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.364-371
  • Anahtar Kelimeler: autosomal recessive, deafness, exome, next-generation sequencing, HEREDITARY HEARING-LOSS, COPY-NUMBER VARIATION, SYNDROME TYPE-I, USHER-SYNDROME, AUDITORY NEUROPATHY, MISSENSE MUTATIONS, PENDRED-SYNDROME, COMMON-CAUSE, PDS GENE, PROTEIN
  • Ankara Üniversitesi Adresli: Evet

Özet

© American College of Medical Genetics and Genomics.Purpose:Autosomal recessive nonsyndromic deafness (ARNSD) is characterized by a high degree of genetic heterogeneity, with reported mutations in 58 different genes. This study was designed to detect deafness-causing variants in a multiethnic cohort with ARNSD by using whole-exome sequencing (WES).Methods:After excluding mutations in the most common gene, GJB2, we performed WES in 160 multiplex families with ARNSD from Turkey, Iran, Mexico, Ecuador, and Puerto Rico to screen for mutations in all known ARNSD genes.Results:We detected ARNSD-causing variants in 90 (56%) families, 54% of which had not been previously reported. Identified mutations were located in 31 known ARNSD genes. The most common genes with mutations were MYO15A (13%), MYO7A (11%), SLC26A4 (10%), TMPRSS3 (9%), TMC1 (8%), ILDR1 (6%), and CDH23 (4%). Nine mutations were detected in multiple families with shared haplotypes, suggesting founder effects.Conclusion:We report on a large multiethnic cohort with ARNSD in which comprehensive analysis of all known ARNSD genes identifies causative DNA variants in 56% of the families. In the remaining families, WES allows us to search for causative variants in novel genes, thus improving our ability to explain the underlying etiology in more families.Genet Med 18 4, 364-371.