title: Mutations in COL11A2 cause non-syndromic hearing loss (DFNA13).
abstract: We report that mutation of COL11A2 causes deafness previously mapped to the DFNA13 locus on chromosome 6p. We found two families (one American and one Dutch) with autosomal dominant, non-syndromic hearing loss to have mutations in COL11A2 that are predicted to affect the triple-helix domain of the collagen protein. In both families, deafness is non-progressive and predominantly affects middle frequencies. Mice with a targeted disruption of Col11a2 also were shown to have hearing loss. Electron microscopy of the tectorial membrane of these mice revealed loss of organization of the collagen fibrils. Our findings revealed a unique ultrastructural malformation of inner-ear architecture associated with non-syndromic hearing loss, and suggest that tectorial membrane abnormalities may be one aetiology of sensorineural hearing loss primarily affecting the mid-frequencies.
authors.affiliation: Molecular Otolaryngology Research Laboratories, Department of Otolaryngology-Head and Neck Surgery, University of Iowa, Iowa City, Iowa, USA.
authors.forename: W T
authors.initials: WT
authors.lastname: McGuirt
authors.forename: S D
authors.initials: SD
authors.lastname: Prasad
authors.forename: A J
authors.initials: AJ
authors.lastname: Griffith
authors.forename: H P
authors.initials: HP
authors.lastname: Kunst
authors.forename: G E
authors.initials: GE
authors.lastname: Green
authors.forename: K B
authors.initials: KB
authors.lastname: Shpargel
authors.forename: C
authors.initials: C
authors.lastname: Runge
authors.forename: C
authors.initials: C
authors.lastname: Huybrechts
authors.forename: R F
authors.initials: RF
authors.lastname: Mueller
authors.forename: E
authors.initials: E
authors.lastname: Lynch
authors.forename: M C
authors.initials: MC
authors.lastname: King
authors.forename: H G
authors.initials: HG
authors.lastname: Brunner
authors.forename: C W
authors.initials: CW
authors.lastname: Cremers
authors.forename: M
authors.initials: M
authors.lastname: Takanosu
authors.forename: S W
authors.initials: SW
authors.lastname: Li
authors.forename: M
authors.initials: M
authors.lastname: Arita
authors.forename: R
authors.initials: R
authors.lastname: Mayne
authors.forename: D J
authors.initials: DJ
authors.lastname: Prockop
authors.forename: G
authors.initials: G
authors.lastname: Van Camp
authors.forename: R J
authors.initials: RJ
authors.lastname: Smith
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D002896:Chromosomes, Human, Pair 6 / Q000235:genetics; D003094:Collagen / Q000235:genetics*; D004247:DNA / Q000235:genetics; D004195:Disease Models, Animal; D005260:Female; D005799:Genes, Dominant; D006319:Hearing Loss, Sensorineural / Q000235:genetics* / Q000473:pathology / Q000503:physiopathology; D006801:Humans; D017403:In Situ Hybridization; D008297:Male; D051379:Mice; D018345:Mice, Knockout; D008969:Molecular Sequence Data; D020125:Mutation, Missense; D010375:Pedigree; D018807:Polymorphism, Single-Stranded Conformational
chemical_list: D003094:Collagen; D004247:DNA