Variability of auditory threshold at deaf patients with splice site c.-23+1G>A mutation in GJB2 gene (Konneksin 26)
Abstract
In this article results of the audiological examination testifying to auditory threshold variability at deaf patients with splice site c.-23+1G>A mutation in GJB2 gene in homozygous state are presented. According to this study this GJB2-genotype is characterized by (horizontal) flat or sloping audioprofile. There are recommendations for applying the results obtained in practice.
About the Authors
F. M. TeryutinRussian Federation
Fedor M. Terjutin - junior researcher.
N. A. Barashkov
Russian Federation
Nikolay A. Barashkov – cand. biol. sciences, head of lab.
N. L. Kunelskaya
Russian Federation
Natalia L. Kunelskaya – doctor of med. sciences, prof., deputy director on scientific work.
V. G. Pshennikova
Russian Federation
Vera G. Pshennikova – researcher.
A. V. Solovyev
Russian Federation
Aisen V. Soloviev – engineer.
L. A. Klarov
Russian Federation
Leonid A. Klarov - doctor radiologist.
Novosibirsk
A. A. Kozhevnikov
Russian Federation
Andrey A. Kozhevnikov - doctor, professional pathologist, chief non-staff profathologist of MH RS (Y).
Novosibirsk
L. M. Vasilyeva
Russian Federation
Lena M. Vasilieva – teacher of the deaf and hard of hearing.
E. E. Fedotova
Russian Federation
Elvira E. Fedotova – cand. med. sciences, doctor, surdologist -otolaringologist, chief non-staff surdologist MH RS (Y).
G. P. Romanov
Russian Federation
Georgiy P. Romanov - lab. Researcher.
N. N. Gotovtsev
Russian Federation
Nurgun N. Gotovsev – junior researcher.
M. V. Pak
Russian Federation
Maria V. Pak - post-graduate student.
S. N. Lekhanova
Russian Federation
Sargylana N. Lekhanova - к.м.н., senior lecturer.
I. V. Morozov
Russian Federation
Igor V. Morozov – cand. biol. sciences, senior researcher.
Novosibirsk
A. A. Bondar
Russian Federation
Alexander A. Bondar – cand. chemical sciences, senior researcher.
Novosibirsk
N. A. Solovyeva
Russian Federation
Natalia A. Solovieva – cand. med. sciences, junior researcher.
A. M. Rafailov
Russian Federation
Adjum M. Rafailov – cand. biol. sciences, senior lecturer.
A. N. Alekseev
Russian Federation
Anatoly N. Alekseev – doctor of historical sciences, prof., director.
O. L. Posukh
Russian Federation
Olga L. Posukh – cand. biol. sciences, senior researcher.
Novosibirsk
L. U. Dzhemileva
Russian Federation
Lilia U. Dzhemileva – docror med. sciences, senior researcher.
Ufa
E. K. Husnutdinova
Russian Federation
Elza K. Husnutdinova – doctor of biol. sciences, prof., head of the Department og genetics.
Ufa
S. A. Fedorova
Russian Federation
Sardana A. Fedorova – doctor biol. sciences, head of the scientific lab. of molecular biology.
References
1. Markova T.G. Kliniko-geneticheskiy analiz vrojdennoy I dorechevoy tugouckosti /avtoref. dis. na soisk. uchen. step. dokt. med. nauk (14.00.04; 03.00.15) /Markova Tatyana Gennadyevna; RNPCAiS. – Moskva, 2008, - 26 s.
2. Bajaj Y., Sirimanna T., Albert D.M. et al. Spectrum of GJB2 mutations causing deafness in the British Bangladeshi population / Y. Bajaj // Clin. Otolaryngol. - 2008. - № 33. - P.313-318.
3. Barashkov N.A., Dzhemileva L.U., Fedorova S.A. et al. Autosomal recessive deafness 1A (DFNB1A) in Yakut population isolate in Eastern Siberia: extensive accumulation of the splice site mutation IVS1+1G>A in GJB2 gene as a result of founder effect / N.A. Barashkov // J. Hum. Genet. - 2011. - № 9. - Р.631-639.
4. Cryns K., Orzan E., Murgia A. et al. A genotype-phenotype correlation for GJB2 (connexin 26) deafness / K. Cryns // J. Med. Genet. - 2004. - № 41. - P.147-154.
5. Kelley P., Harris D., Comer B. et. al. Novel mutations in the connexin 26 gene (GJB2) that cause autosomal recessive (DFNB1) hearing loss //Am. J. Hum. Genet. - 1998. - Vol. 62(4). - P. 792-799.
6. Kelsell D.P., Dunlop J., Stevens HP. et al. Connexin 26 mutations in hereditary nonsyndromic sensorineural deafness // Nature. - 1997. - Vol. 387(6628). - P. 80-83.
7. Kenna M.A., Feldman H.A., Neault M.W. et al. Audiologic phenotype and progression in GJB2 (Connexin 26) hearing loss / M.A. Kenna // Arch. Otolaryngol. Head Neck Surg. - 2010. - 136(1). - P.81-7.
8. Marazita M.L., Ploughman L.M., Rawlings B. et al. Genetic epidemiological studies of early-onset deafness in the U.S. school-age population / M.L. Marazita // Am. J. Med. Genet. - 1993. - V.46. - № 5. P.486-491.171 2 (50) 2015
9. Mehl A., Thompson V. The Colorado newborn screening project, 1992-1999: on the threshold of effective of population based universal newborn hearing screening / A. Mehl // Pediatrics. - 2002. - Vol.109. - E7.
10. Murgia A., Orzan E., Polli R. et al. Cx26 deafness: mutation analysis and clinical variability / A.Murgia // J. Med. Genet. - 1999. - № 36. - P.829-832.
11. Oguchi T., Ohtsuka A., Hashimoto S. et al. Clinical features of patients with GJB2 (connexin 26) mutations: severity of hearing loss is correlated with genotypes and protein expression patterns / T. Oguchi // J. Hum. Genet. - 2005. - № 50. - P.76-83.
12. Sirmaci A., Akcayoz-Duman D., Tekin M. The c.IVS1+1G>A mutation in the GJB2 gene is prevalent and large deletions involving the GJB6 gene are not present in the Turkish population / A. Sirmaci // J. Genet. - 2006. -Vol.85. - P.213-216.
13. Snoeckx R.L., Huygen P.L.M., Feldmann D. et al. GJB2 Mutations and Degree of Hearing Loss: A Multicenter Study / R.L. Snoeckx // Am. J. Hum. Genet. - 2005. - № 77. - P.945-957.
Review
For citations:
Teryutin F.M., Barashkov N.A., Kunelskaya N.L., Pshennikova V.G., Solovyev A.V., Klarov L.A., Kozhevnikov A.A., Vasilyeva L.M., Fedotova E.E., Romanov G.P., Gotovtsev N.N., Pak M.V., Lekhanova S.N., Morozov I.V., Bondar A.A., Solovyeva N.A., Rafailov A.M., Alekseev A.N., Posukh O.L., Dzhemileva L.U., Husnutdinova E.K., Fedorova S.A. Variability of auditory threshold at deaf patients with splice site c.-23+1G>A mutation in GJB2 gene (Konneksin 26). Yakut Medical Journal. 2015;(2):100-102.








