#609706
Table of Contents
A number sign (#) is used with this entry because of evidence that autosomal recessive deafness-53 (DFNB53) is caused by homozygous mutation in the COL11A2 gene (120290) on chromosome 6p21.
Autosomal recessive deafness-53 (DFNB53) is characterized by prelingual profound senorineural hearing loss (Chen et al., 2005; Chakchouk et al., 2015).
Chen et al. (2005) reported a consanguineous Iranian family (family L622) with a prelingual profound, nonprogressive, and nonsyndromic sensorineural hearing loss.
Chakchouk et al. (2015) studied a large multigenerational consanguineous Tunisian family in which 2 sisters and their male cousin as well as a more distant male relative had a history of prelingual hearing loss. Pure tone audiometry in the 2 affected sisters showed bilateral profound sensorineural hearing loss. Chakchouk et al. (2015) also studied 2 affected Turkish sisters with prelingual-onset hearing loss, born of consanguineous parents, who also exhibited bilateral profound sensorineural deafness.
Using genomewide linkage analysis in 11 members of a consanguineous Iranian family with nonsyndromic hearing loss, Chen et al. (2005) identified a 9.4-cM region flanked by D6S276 and D6S1610 on chromosome 6p21.3, which they designated DFNB53.
In a large multigenerational consanguineous Tunisian family segregating autosomal recessive congenital hearing loss, Chakchouk et al. (2015) performed a genomewide microsatellite scan that demonstrated possible linkage at 6p21, with 3 of 4 affected individuals homozygous for marker D6S1610.
In 5 affected members of 2 sibships of a consanguineous Iranian family (family L622) with nonsyndromic hearing loss, Chen et al. (2005) identified homozygosity for a missense mutation in the COL11A2 gene (P621T; 120290.0010). The mutation segregated with hearing loss in the family.
In a large multigenerational consanguineous Tunisian family segregating autosomal recessive congenital profound sensorineural hearing loss, Chakchouk et al. (2015) performed whole-exome sequencing and identified a homozygous missense mutation in the COL11A2 gene (A37S; 120290.0014) that segregated with disease. Family members who were heterozygous carriers of A37S exhibited apparently progressive sensorineural hearing loss after age 30 years. Whole-exome sequencing in 2 affected sisters from a consanguineous Turkish family revealed homozygosity for a different missense mutation in COL11A2 (P888T; 120290.0015); their unaffected parents and an unaffected sister were heterozygous for the mutation.
Chakchouk, I., Grati, M., Bademci, G., Bensaid, M., Ma, Q., Chakroun, A., Foster, J., II, Yan, D., Duman, D., Diaz-Horta, O., Ghorbel, A., Mittal, R., Farooq, A., Tekin, M., Masmoudi, S., Liu, X. Z. Novel mutations confirm that COL11A2 is responsible for autosomal recessive non-syndromic hearing loss DFNB53. Molec. Genet. Genomics 290: 1327-1334, 2015. [PubMed: 25633957, images, related citations] [Full Text]
Chen, W., Kahrizi, K., Meyer, N. C., Riazalhosseini, Y., Van Camp, G., Najmabadi, H., Smith, R. J. H. Mutation of COL11A2 causes autosomal recessive non-syndromic hearing loss at the DFNB53 locus. J. Med. Genet. 42: e61, 2005. Note: Electronic Article. [PubMed: 16033917, related citations] [Full Text]
ORPHA: 90636; DO: 0110509;
Location | Phenotype |
Phenotype MIM number |
Inheritance |
Phenotype mapping key |
Gene/Locus |
Gene/Locus MIM number |
---|---|---|---|---|---|---|
6p21.32 | Deafness, autosomal recessive 53 | 609706 | Autosomal recessive | 3 | COL11A2 | 120290 |
A number sign (#) is used with this entry because of evidence that autosomal recessive deafness-53 (DFNB53) is caused by homozygous mutation in the COL11A2 gene (120290) on chromosome 6p21.
Autosomal recessive deafness-53 (DFNB53) is characterized by prelingual profound senorineural hearing loss (Chen et al., 2005; Chakchouk et al., 2015).
Chen et al. (2005) reported a consanguineous Iranian family (family L622) with a prelingual profound, nonprogressive, and nonsyndromic sensorineural hearing loss.
Chakchouk et al. (2015) studied a large multigenerational consanguineous Tunisian family in which 2 sisters and their male cousin as well as a more distant male relative had a history of prelingual hearing loss. Pure tone audiometry in the 2 affected sisters showed bilateral profound sensorineural hearing loss. Chakchouk et al. (2015) also studied 2 affected Turkish sisters with prelingual-onset hearing loss, born of consanguineous parents, who also exhibited bilateral profound sensorineural deafness.
Using genomewide linkage analysis in 11 members of a consanguineous Iranian family with nonsyndromic hearing loss, Chen et al. (2005) identified a 9.4-cM region flanked by D6S276 and D6S1610 on chromosome 6p21.3, which they designated DFNB53.
In a large multigenerational consanguineous Tunisian family segregating autosomal recessive congenital hearing loss, Chakchouk et al. (2015) performed a genomewide microsatellite scan that demonstrated possible linkage at 6p21, with 3 of 4 affected individuals homozygous for marker D6S1610.
In 5 affected members of 2 sibships of a consanguineous Iranian family (family L622) with nonsyndromic hearing loss, Chen et al. (2005) identified homozygosity for a missense mutation in the COL11A2 gene (P621T; 120290.0010). The mutation segregated with hearing loss in the family.
In a large multigenerational consanguineous Tunisian family segregating autosomal recessive congenital profound sensorineural hearing loss, Chakchouk et al. (2015) performed whole-exome sequencing and identified a homozygous missense mutation in the COL11A2 gene (A37S; 120290.0014) that segregated with disease. Family members who were heterozygous carriers of A37S exhibited apparently progressive sensorineural hearing loss after age 30 years. Whole-exome sequencing in 2 affected sisters from a consanguineous Turkish family revealed homozygosity for a different missense mutation in COL11A2 (P888T; 120290.0015); their unaffected parents and an unaffected sister were heterozygous for the mutation.
Chakchouk, I., Grati, M., Bademci, G., Bensaid, M., Ma, Q., Chakroun, A., Foster, J., II, Yan, D., Duman, D., Diaz-Horta, O., Ghorbel, A., Mittal, R., Farooq, A., Tekin, M., Masmoudi, S., Liu, X. Z. Novel mutations confirm that COL11A2 is responsible for autosomal recessive non-syndromic hearing loss DFNB53. Molec. Genet. Genomics 290: 1327-1334, 2015. [PubMed: 25633957] [Full Text: https://doi.org/10.1007/s00438-015-0995-9]
Chen, W., Kahrizi, K., Meyer, N. C., Riazalhosseini, Y., Van Camp, G., Najmabadi, H., Smith, R. J. H. Mutation of COL11A2 causes autosomal recessive non-syndromic hearing loss at the DFNB53 locus. J. Med. Genet. 42: e61, 2005. Note: Electronic Article. [PubMed: 16033917] [Full Text: https://doi.org/10.1136/jmg.2005.032615]
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