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Incidence of the del35G/GJB2 mutation in Croatian newborns with hearing impairmentMedica, Igor ...Background: The del35G mutation in the GJB2 gene is the most common cause of prelingual deafness. The mutation frequency has so far been estimated either by testing symptomatic children or adults, or ... by carrier testing of the general population. The purpose of our study was to establish the incidence ofthe del35G/GJB2 mutation in newborns with hearing impairment--in congenital deafness. Material/Methods: Patients were identified through a neonatal screening program (performed on a regular basis in Croatia since 2002). Otoacoustic emission testing was performed on 3275 newborns, and allele-specific PCR was performed on newborns diagnosed with hearing impairment. Results: Hearing impairment was found in 9 newborns, the frequencyof congenital hearing impairment being 1/363; the del35G mutation wasfound in 3 of these 9 newborns. The established incidence of the mutation in the studied population of Croatian newborns with hearing impairment is 1/1091 (95CI: 1/372-1/3205). Conclusions: This particular approach to patient identification, based on exact clinical examination supplemented with molecular testing, allowed for complete diagnosis and precise estimation of the incidence of the mutation in cases of congenital deafness, which proved tobe higher than previously reported in prelingual deafness. This finding has important implications in clinical evaluation and genetic counseling of patients and their families.Vir: Medical Science Monitor. - ISSN 1234-1010 (Letn. 11, št. 11, 2005, str. 533-535)Vrsta gradiva - članek, sestavni delLeto - 2005Jezik - angleškiCOBISS.SI-ID - 21114585
Avtor
Medica, Igor |
Rudolf, Gorazd |
Prpić, Igor |
Stanojević, Milan, dr. med. |
Peterlin, Borut, 1963-
Teme
Deafness |
Diagnosis |
Congenital |
Epidemiology |
Connexins |
Genetics |
Genetic Screening |
Mutation |
Otoacoustic Emissions, Spontaneous |
Croatia |
Alleles |
Gene Frequency |
Infant, Newborn |
Incidence |
Sequence Deletion |
Genetsko presejanje |
Gluhost |
Koneksini |
Mutacija |
Otoakustične emisije spontane |
Aleli |
Genska frekvenca |
Hrvaška |
Incidenca |
Novorojenček |
Zaporedje, delecija
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Medica, Igor | 15356 |
Rudolf, Gorazd | 21133 |
Prpić, Igor | ![]() |
Stanojević, Milan, dr. med. | ![]() |
Peterlin, Borut, 1963- | 10458 |
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