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Sequence variants in four genes underlying Bardet-Biedl syndrome in consanguineous families.


ABSTRACT: To investigate the molecular basis of Bardet-Biedl syndrome (BBS) in five consanguineous families of Pakistani origin.Linkage in two families (A and B) was established to BBS7 on chromosome 4q27, in family C to BBS8 on chromosome 14q32.1, and in family D to BBS10 on chromosome 12q21.2. Family E was investigated directly with exome sequence analysis.Sanger sequencing revealed two novel mutations and three previously reported mutations in the BBS genes. These mutations include two deletions (c.580_582delGCA, c.1592_1597delTTCCAG) in the BBS7 gene, a missense mutation (p.Gln449His) in the BBS8 gene, a frameshift mutation (c.271_272insT) in the BBS10 gene, and a nonsense mutation (p.Ser40*) in the MKKS (BBS6) gene.Two novel mutations and three previously reported variants, identified in the present study, further extend the body of evidence implicating BBS6, BBS7, BBS8, and BBS10 in causing BBS.

SUBMITTER: Ullah A 

PROVIDER: S-EPMC5524433 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature

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<h4>Purpose</h4>To investigate the molecular basis of Bardet-Biedl syndrome (BBS) in five consanguineous families of Pakistani origin.<h4>Methods</h4>Linkage in two families (A and B) was established to <i>BBS7</i> on chromosome 4q27, in family C to <i>BBS8</i> on chromosome 14q32.1, and in family D to <i>BBS10</i> on chromosome 12q21.2. Family E was investigated directly with exome sequence analysis.<h4>Results</h4>Sanger sequencing revealed two novel mutations and three previously reported mut  ...[more]

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