Segregation of a mutation in CNGB1 encoding the β-subunit of the rod cGMP-gated channel in a family with autosomal recessive retinitis pigmentosa

24 April 2001

journal article
Published by Springer Nature in Human Genetics

Vol. 108 (4) , 328-334
https://doi.org/10.1007/s004390100496

Abstract

Retinitis pigmentosa (RP) is a clinically and genetically heterogeneous group of retinal diseases leading to blindness. By performing full genome linkage analysis in a consanguineous French family affected with severe autosomal recessive RP, we have excluded linkage to known loci involved in RP and mapped a novel locus to chromosome 16q13-q21 (Z_max=2.83 at θ=0 at the D16S3089 locus). Two candidate genes KIFC3 and CNGB1 mapping to this critical interval have been screened for mutations. The CNGB1 gene, which encodes the β-subunit of the rod cGMP-gated channel, is mutated in the family presented in this study.

Keywords

LINKAGE ANALYSIS
AUTOSOMAL RECESSIVE
GENETICS
CANDIDATE GENE

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