%603098
Table of Contents
Cytogenetic location: 7q34-q36 Genomic coordinates (GRCh38) : 7:138,500,001-159,345,973
Mustapha et al. (1998) reported a large consanguineous Lebanese family in which 5 sibs had severe progressive sensorineural hearing loss. Deafness was recognized in the prelingual period. The age of the patients ranged from 8 to 26 years. Younger patients had a bilateral hearing loss of 50 to 70 dBHL at all frequencies compared to 80 to 100 dBHL in older patients. Audiologic performances of both parents were normal.
Masmoudi et al. (2004) reported 2 consanguineous Tunisian families in which a total of 11 individuals had severe to profound nonsyndromic deafness consistent with autosomal recessive inheritance.
By linkage analysis in a Lebanese family segregating nonsyndromic deafness, Mustapha et al. (1998) found linkage of the deafness, designated DFNB13, to chromosome 7, with a maximum lod score of 4.5 for markers D7S661-D7S498. Recombination events and homozygosity mapping by descent defined a 17-cM interval in the region 7q34-q36, between markers D7S2468/D7S2505 proximally and D7S2439 distally.
Masmoudi et al. (2004) found significant linkage of nonsyndromic deafness in 2 consanguineous Tunisian families with marker D7S2513 corresponding to the DFNB13 locus (maximum 2-point lod score of 7.35). Using dinucleotide repeat microsatellite markers, the authors defined a 2.2-Mb candidate region between D7S5377 and D7S2473. All affected individuals from both families shared a common disease haplotype, indicating a founder effect.
Exclusion Studies
By genetic analysis in 2 affected individuals with nonsyndromic deafness mapping to 7q34-q36, Masmoudi et al. (2004) excluded mutations in the NDUFB2 (603838), MRPS33 (611993), and SSBP1 (600439) genes.
Masmoudi, S., Charfedine, I., Rebeh, I. B., Rebai, A., Tlili, A., Ghorbel, A. M., Belguith, H., Petit, C., Drira, M., Ayadi, H. Refined mapping of the autosomal recessive non-syndromic deafness locus DFNB13 using eight novel microsatellite markers. Clin. Genet. 66: 358-364, 2004. [PubMed: 15355440, related citations] [Full Text]
Mustapha, M., Chardenoux, S., Nieder, A., Salem, N., Weissenbach, J., El-Zir, E., Loiselet, J., Petit, C. A sensorineural progressive autosomal recessive form of isolated deafness, DFNB13, maps to chromosome 7q34-q36. Europ. J. Hum. Genet. 6: 245-250, 1998. [PubMed: 9781028, related citations] [Full Text]
ORPHA: 90636; DO: 0110468;
Cytogenetic location: 7q34-q36 Genomic coordinates (GRCh38) : 7:138,500,001-159,345,973
Location | Phenotype |
Phenotype MIM number |
Inheritance |
Phenotype mapping key |
---|---|---|---|---|
7q34-q36 | Deafness, autosomal recessive 13 | 603098 | Autosomal recessive | 2 |
Mustapha et al. (1998) reported a large consanguineous Lebanese family in which 5 sibs had severe progressive sensorineural hearing loss. Deafness was recognized in the prelingual period. The age of the patients ranged from 8 to 26 years. Younger patients had a bilateral hearing loss of 50 to 70 dBHL at all frequencies compared to 80 to 100 dBHL in older patients. Audiologic performances of both parents were normal.
Masmoudi et al. (2004) reported 2 consanguineous Tunisian families in which a total of 11 individuals had severe to profound nonsyndromic deafness consistent with autosomal recessive inheritance.
By linkage analysis in a Lebanese family segregating nonsyndromic deafness, Mustapha et al. (1998) found linkage of the deafness, designated DFNB13, to chromosome 7, with a maximum lod score of 4.5 for markers D7S661-D7S498. Recombination events and homozygosity mapping by descent defined a 17-cM interval in the region 7q34-q36, between markers D7S2468/D7S2505 proximally and D7S2439 distally.
Masmoudi et al. (2004) found significant linkage of nonsyndromic deafness in 2 consanguineous Tunisian families with marker D7S2513 corresponding to the DFNB13 locus (maximum 2-point lod score of 7.35). Using dinucleotide repeat microsatellite markers, the authors defined a 2.2-Mb candidate region between D7S5377 and D7S2473. All affected individuals from both families shared a common disease haplotype, indicating a founder effect.
Exclusion Studies
By genetic analysis in 2 affected individuals with nonsyndromic deafness mapping to 7q34-q36, Masmoudi et al. (2004) excluded mutations in the NDUFB2 (603838), MRPS33 (611993), and SSBP1 (600439) genes.
Masmoudi, S., Charfedine, I., Rebeh, I. B., Rebai, A., Tlili, A., Ghorbel, A. M., Belguith, H., Petit, C., Drira, M., Ayadi, H. Refined mapping of the autosomal recessive non-syndromic deafness locus DFNB13 using eight novel microsatellite markers. Clin. Genet. 66: 358-364, 2004. [PubMed: 15355440] [Full Text: https://doi.org/10.1111/j.1399-0004.2004.00311.x]
Mustapha, M., Chardenoux, S., Nieder, A., Salem, N., Weissenbach, J., El-Zir, E., Loiselet, J., Petit, C. A sensorineural progressive autosomal recessive form of isolated deafness, DFNB13, maps to chromosome 7q34-q36. Europ. J. Hum. Genet. 6: 245-250, 1998. [PubMed: 9781028] [Full Text: https://doi.org/10.1038/sj.ejhg.5200177]
Dear OMIM User,
To ensure long-term funding for the OMIM project, we have diversified our revenue stream. We are determined to keep this website freely accessible. Unfortunately, it is not free to produce. Expert curators review the literature and organize it to facilitate your work. Over 90% of the OMIM's operating expenses go to salary support for MD and PhD science writers and biocurators. Please join your colleagues by making a donation now and again in the future. Donations are an important component of our efforts to ensure long-term funding to provide you the information that you need at your fingertips.
Thank you in advance for your generous support,
Ada Hamosh, MD, MPH
Scientific Director, OMIM