Congenital hearing loss. Molecular genetic diagnosis of connexin genes and genetic counselling
About 50% of congenital non-syndromic hearing impairment is caused by genetic factors. Research on the genetics of deafness has revealed a vast number of relevant genes. Mutations in the GJB2 gene have been shown to be the most common in several populations. Mutation analysis of the genes for connex...
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| Veröffentlicht in: | HNO 2005-09, Vol.53 (9), p.773-778 |
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| creator | Kunstmann, E Hildmann, A Lautermann, J Aletsee, C Epplen, J T Sudhoff, H |
| description | About 50% of congenital non-syndromic hearing impairment is caused by genetic factors. Research on the genetics of deafness has revealed a vast number of relevant genes. Mutations in the GJB2 gene have been shown to be the most common in several populations.
Mutation analysis of the genes for connexin 26, 30 and 31 (GJB2, GJB6 and GJB3) was performed in 67 patients with profound hearing loss.
Of the participants, 9% had two pathogenic mutations in the GJB2 gene. Pedigree information indicates that in these families further offspring have a 25% to a 100% chance of having hearing impairment.
Patients with non-syndromic hearing impairment should be offered molecular diagnostics of the GJB2 gene. Genetic counseling is mandatory for mutation carriers in order to advise them on the individual consequences of the gene test results. |
| format | Article |
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Mutation analysis of the genes for connexin 26, 30 and 31 (GJB2, GJB6 and GJB3) was performed in 67 patients with profound hearing loss.
Of the participants, 9% had two pathogenic mutations in the GJB2 gene. Pedigree information indicates that in these families further offspring have a 25% to a 100% chance of having hearing impairment.
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Mutation analysis of the genes for connexin 26, 30 and 31 (GJB2, GJB6 and GJB3) was performed in 67 patients with profound hearing loss.
Of the participants, 9% had two pathogenic mutations in the GJB2 gene. Pedigree information indicates that in these families further offspring have a 25% to a 100% chance of having hearing impairment.
Patients with non-syndromic hearing impairment should be offered molecular diagnostics of the GJB2 gene. Genetic counseling is mandatory for mutation carriers in order to advise them on the individual consequences of the gene test results.</description><subject>Connexins - genetics</subject><subject>DNA Mutational Analysis - methods</subject><subject>Female</subject><subject>Genetic Counseling - methods</subject><subject>Genetic Predisposition to Disease - epidemiology</subject><subject>Genetic Predisposition to Disease - genetics</subject><subject>Genetic Testing - methods</subject><subject>Germany - epidemiology</subject><subject>Hearing Loss - congenital</subject><subject>Hearing Loss - epidemiology</subject><subject>Hearing Loss - metabolism</subject><subject>Hearing Loss - rehabilitation</subject><subject>Humans</subject><subject>Incidence</subject><subject>Male</subject><subject>Pedigree</subject><subject>Polymorphism, Genetic</subject><subject>Risk Assessment - methods</subject><subject>Risk Factors</subject><issn>0017-6192</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNo9kE1LxDAURbNQnHH0L0hW7ipp0pe2Syl-wYibWVvSNKmRNKl9Lei_N-jo6nE5h8vlnZAtY3mZybzmG3KO-J4i1FyckU0OwHhVw5a8NjEMJrhFefpm1OzCQH1EvKHP0Ru9ejXTxM3iNO2dGkJEhzRaqmMI5tOFH4pUhf7f03ENaLxPXRfk1CqP5vJ4d-Rwf3doHrP9y8NTc7vPJiggAygLrnKwEiA3XcGsLhmTNROyrHvOWaU1L9L4wtaaC2kUA2m5gi4hwbnYkevf2mmOH6vBpR0d6jRBBRNXbGUFlZAgknh1FNduNH07zW5U81f79xDxDcT0WxM</recordid><startdate>200509</startdate><enddate>200509</enddate><creator>Kunstmann, E</creator><creator>Hildmann, A</creator><creator>Lautermann, J</creator><creator>Aletsee, C</creator><creator>Epplen, J T</creator><creator>Sudhoff, H</creator><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>7X8</scope></search><sort><creationdate>200509</creationdate><title>Congenital hearing loss. Molecular genetic diagnosis of connexin genes and genetic counselling</title><author>Kunstmann, E ; Hildmann, A ; Lautermann, J ; Aletsee, C ; Epplen, J T ; Sudhoff, H</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-p545-55742a15f6551eb40fc7006903679d2208cc241594f9c236ea056f2a5b2083223</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>ger</language><creationdate>2005</creationdate><topic>Connexins - genetics</topic><topic>DNA Mutational Analysis - methods</topic><topic>Female</topic><topic>Genetic Counseling - methods</topic><topic>Genetic Predisposition to Disease - epidemiology</topic><topic>Genetic Predisposition to Disease - genetics</topic><topic>Genetic Testing - methods</topic><topic>Germany - epidemiology</topic><topic>Hearing Loss - congenital</topic><topic>Hearing Loss - epidemiology</topic><topic>Hearing Loss - metabolism</topic><topic>Hearing Loss - rehabilitation</topic><topic>Humans</topic><topic>Incidence</topic><topic>Male</topic><topic>Pedigree</topic><topic>Polymorphism, Genetic</topic><topic>Risk Assessment - methods</topic><topic>Risk Factors</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kunstmann, E</creatorcontrib><creatorcontrib>Hildmann, A</creatorcontrib><creatorcontrib>Lautermann, J</creatorcontrib><creatorcontrib>Aletsee, C</creatorcontrib><creatorcontrib>Epplen, J T</creatorcontrib><creatorcontrib>Sudhoff, H</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>MEDLINE - Academic</collection><jtitle>HNO</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kunstmann, E</au><au>Hildmann, A</au><au>Lautermann, J</au><au>Aletsee, C</au><au>Epplen, J T</au><au>Sudhoff, H</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Congenital hearing loss. Molecular genetic diagnosis of connexin genes and genetic counselling</atitle><jtitle>HNO</jtitle><addtitle>HNO</addtitle><date>2005-09</date><risdate>2005</risdate><volume>53</volume><issue>9</issue><spage>773</spage><epage>778</epage><pages>773-778</pages><issn>0017-6192</issn><abstract>About 50% of congenital non-syndromic hearing impairment is caused by genetic factors. Research on the genetics of deafness has revealed a vast number of relevant genes. Mutations in the GJB2 gene have been shown to be the most common in several populations.
Mutation analysis of the genes for connexin 26, 30 and 31 (GJB2, GJB6 and GJB3) was performed in 67 patients with profound hearing loss.
Of the participants, 9% had two pathogenic mutations in the GJB2 gene. Pedigree information indicates that in these families further offspring have a 25% to a 100% chance of having hearing impairment.
Patients with non-syndromic hearing impairment should be offered molecular diagnostics of the GJB2 gene. Genetic counseling is mandatory for mutation carriers in order to advise them on the individual consequences of the gene test results.</abstract><cop>Germany</cop><pmid>15502895</pmid><tpages>6</tpages></addata></record> |
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| ispartof | HNO, 2005-09, Vol.53 (9), p.773-778 |
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| language | ger |
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| source | MEDLINE; SpringerLink (Online service) |
| subjects | Connexins - genetics DNA Mutational Analysis - methods Female Genetic Counseling - methods Genetic Predisposition to Disease - epidemiology Genetic Predisposition to Disease - genetics Genetic Testing - methods Germany - epidemiology Hearing Loss - congenital Hearing Loss - epidemiology Hearing Loss - metabolism Hearing Loss - rehabilitation Humans Incidence Male Pedigree Polymorphism, Genetic Risk Assessment - methods Risk Factors |
| title | Congenital hearing loss. Molecular genetic diagnosis of connexin genes and genetic counselling |
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