#613307
Table of Contents
A number sign (#) is used with this entry because autosomal recessive deafness-79 (DFNB79) is caused by homozygous mutation in the TPRN gene (613354) on chromosome 9q34.
Khan et al. (2010) reported 3 consanguineous Pakistani families with severe to profound autosomal recessive prelingual nonsyndromic sensorineural hearing loss.
Li et al. (2010) reported 2 Dutch sibs with DFNB79. Sensorineural hearing loss was diagnosed at age 4 years 3 months and 2 years 9 months, respectively. At these ages, both had delayed speech development, but no other abnormalities. The hearing loss was progressive, becoming profound by age 15 and 26 years, respectively.
By genomewide analysis of a consanguineous Pakistani family with autosomal recessive hearing loss, Khan et al. (2010) identified a locus on chromosome 9q34.3 (2-point lod score of 9.43 at marker D9SH159). Two additional large Pakistani families with hearing loss were found to link to the same region. Haplotype analysis of the 3 families refined the candidate region to a 3.84-Mb interval between D9S1818 and D9SH6. The locus was designated DFNB79. Sequencing of candidate genes within this region did not identify any pathogenic mutations.
In affected members of 4 consanguineous Pakistani families with autosomal recessive nonsyndromic deafness-79 (DFNB79; 613307), including the 3 families previously reported by Khan et al. (2010), Rehman et al. (2010) identified 4 different homozygous truncating mutations in the TPRN gene (613354.0001-613354.0004).
Li et al. (2010) also identified homozygous loss of function mutations in the TPRN gene (613354.0004 and 613354.0005) in affected members of a large consanguineous Moroccan family and a Dutch family with DFNB79.
Khan, S. Y., Riazuddin, S., Shahzad, M., Ahmed, N., Zafar, A. U., Rehman, A. U., Morell, R. J., Griffith, A. J., Ahmed, Z. M., Riazuddin, S., Friedman, T. B. DFNB79: reincarnation of a nonsyndromic deafness locus on chromosome 9q34.3. Europ. J. Hum. Genet. 18: 125-129, 2010. [PubMed: 19603065, images, related citations] [Full Text]
Li, Y., Pohl, E., Boulouiz, R., Schraders, M., Nurnberg, G., Charif, M., Admiraal, R. J. C., von Ameln, S., Baessmann, I., Kandil, M., Veltman, J. A., Nurnberg, P., Kubisch, C., Barakat, A., Kremer, H., Wollnik, B. Mutations in TPRN cause a progressive form of autosomal recessive nonsyndromic hearing loss. Am. J. Hum. Genet. 86: 479-484, 2010. [PubMed: 20170898, images, related citations] [Full Text]
Rehman, A. U., Morell, R. J., Belyantseva, I. A., Khan, S. Y., Boger, E. T., Shahzad, M., Ahmed, Z. M., Riazuddin, S., Khan, S. N., Riazuddin, S., Friedman, T. B. Targeted capture and next-generation sequencing identifies C9orf75, encoding taperin, as the mutated gene in nonsyndromic deafness DFNB79. Am. J. Hum. Genet. 86: 378-388, 2010. [PubMed: 20170899, images, related citations] [Full Text]
ORPHA: 90636; DO: 0110526;
Location | Phenotype |
Phenotype MIM number |
Inheritance |
Phenotype mapping key |
Gene/Locus |
Gene/Locus MIM number |
---|---|---|---|---|---|---|
9q34.3 | Deafness, autosomal recessive 79 | 613307 | Autosomal recessive | 3 | TPRN | 613354 |
A number sign (#) is used with this entry because autosomal recessive deafness-79 (DFNB79) is caused by homozygous mutation in the TPRN gene (613354) on chromosome 9q34.
Khan et al. (2010) reported 3 consanguineous Pakistani families with severe to profound autosomal recessive prelingual nonsyndromic sensorineural hearing loss.
Li et al. (2010) reported 2 Dutch sibs with DFNB79. Sensorineural hearing loss was diagnosed at age 4 years 3 months and 2 years 9 months, respectively. At these ages, both had delayed speech development, but no other abnormalities. The hearing loss was progressive, becoming profound by age 15 and 26 years, respectively.
By genomewide analysis of a consanguineous Pakistani family with autosomal recessive hearing loss, Khan et al. (2010) identified a locus on chromosome 9q34.3 (2-point lod score of 9.43 at marker D9SH159). Two additional large Pakistani families with hearing loss were found to link to the same region. Haplotype analysis of the 3 families refined the candidate region to a 3.84-Mb interval between D9S1818 and D9SH6. The locus was designated DFNB79. Sequencing of candidate genes within this region did not identify any pathogenic mutations.
In affected members of 4 consanguineous Pakistani families with autosomal recessive nonsyndromic deafness-79 (DFNB79; 613307), including the 3 families previously reported by Khan et al. (2010), Rehman et al. (2010) identified 4 different homozygous truncating mutations in the TPRN gene (613354.0001-613354.0004).
Li et al. (2010) also identified homozygous loss of function mutations in the TPRN gene (613354.0004 and 613354.0005) in affected members of a large consanguineous Moroccan family and a Dutch family with DFNB79.
Khan, S. Y., Riazuddin, S., Shahzad, M., Ahmed, N., Zafar, A. U., Rehman, A. U., Morell, R. J., Griffith, A. J., Ahmed, Z. M., Riazuddin, S., Friedman, T. B. DFNB79: reincarnation of a nonsyndromic deafness locus on chromosome 9q34.3. Europ. J. Hum. Genet. 18: 125-129, 2010. [PubMed: 19603065] [Full Text: https://doi.org/10.1038/ejhg.2009.121]
Li, Y., Pohl, E., Boulouiz, R., Schraders, M., Nurnberg, G., Charif, M., Admiraal, R. J. C., von Ameln, S., Baessmann, I., Kandil, M., Veltman, J. A., Nurnberg, P., Kubisch, C., Barakat, A., Kremer, H., Wollnik, B. Mutations in TPRN cause a progressive form of autosomal recessive nonsyndromic hearing loss. Am. J. Hum. Genet. 86: 479-484, 2010. [PubMed: 20170898] [Full Text: https://doi.org/10.1016/j.ajhg.2010.02.003]
Rehman, A. U., Morell, R. J., Belyantseva, I. A., Khan, S. Y., Boger, E. T., Shahzad, M., Ahmed, Z. M., Riazuddin, S., Khan, S. N., Riazuddin, S., Friedman, T. B. Targeted capture and next-generation sequencing identifies C9orf75, encoding taperin, as the mutated gene in nonsyndromic deafness DFNB79. Am. J. Hum. Genet. 86: 378-388, 2010. [PubMed: 20170899] [Full Text: https://doi.org/10.1016/j.ajhg.2010.01.030]
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