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Wolf, A; Frohne, A; Allen, M; Parzefall, T; Koenighofer, M; Schreiner, MM; Schoefer, C; Frei, K; Lucas, T.
A Novel Mutation in SLC26A4 Causes Nonsyndromic Autosomal Recessive Hearing Impairment.
Otol Neurotol. 2017; 38(2):173-179
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Autor/innen der Med Uni Graz:
Wolf Axel
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Abstract:
Heterozygous mutations in GJB2 (MIM: 121011) encoding the gap junction protein connexin 26 are overrepresented in patient groups suffering from nonsyndromic sensorineural hearing impairment (HI) implying the involvement of additional genetic factors. Mutations in SLC26A4 (MIM: 605646), encoding the protein pendrin can cause both Pendred syndrome and autosomal recessive, nonsyndromic HI locus 4 type sensorineural HI (MIM: 600791). Aim of this study was to investigate the role of SLC26A4 coding mutations in a nonsyndromic hearing impairment (NSHI) patient group bearing heterozygous GJB2 35delG mutations. We analyzed the 20 coding exons of SLC26A4 in a group of patients (n = 15) bearing heterozygous 35delG mutations and exclusively suffering from congenital HI. In a case of bilateral congenital hearing loss we identified a rare, novel SLC26A4 exon 2 splice donor mutation (c.164+1delG) predicted to truncate pendrin in the first cytoplasmic domain, as a compound heterozygote with the pathogenic missense mutation c.1061T>C (p.354F>S; rs111033243). Screening for SLC26A4 mutations may identify the genetic causes of hearing loss in patients bearing heterozygous mutations in GJB2. SLC26A4 coding mutations are genetic causes for nonsyndromic HI in patients bearing heterozygous GJB2 35delG mutations.
Find related publications in this database (using NLM MeSH Indexing)
Adult -
Child -
Child, Preschool -
Connexins - genetics
Exons -
Female -
Hearing Loss, Bilateral - genetics
Hearing Loss, Sensorineural - genetics
Heterozygote -
Humans -
Infant -
Male -
Membrane Transport Proteins - genetics
Middle Aged -
Mutation -
Sulfate Transporters -
Young Adult -

Find related publications in this database (Keywords)
Member 4
Mutation-Nonsyndromic hearing impairment
Pendrin
SLC26A4
Solute carrier family 26 member 4
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