A ninth locus (RP18) for autosomal dominant retinitis pigmentosa maps in the pericentromeric region of chromosome 1.

Abstract:

:We studied a large Danish family of seven generations in which autosomal dominant retinitis pigmentosa (adRP), a heterogeneous genetic form of retinal dystrophy, was segregating. After linkage had been excluded to all known adRP loci on chromosomes 3q, 6p, 7p, 7q, 8q, 17p, 17q and 19q, a genome screening was performed. Positive lod scores suggestive of linkage with values ranging between Z = 1.58-5.36 at theta = 0.04-0.20 were obtained for eight loci on proximal 1p and 1q. Close linkage without recombination and a maximum lod score of 7.22 at theta = 0.00 was found between the adRP locus (RP18) in this family and D1S498 which is on 1q very near the centromere. Analysis of multiply informative meioses suggests that in this family D1S534 and D1S305 flank RP18 in interval 1p13-q23. No linkage has been found to loci from this chromosomal region in six other medium sized adRP families in which the disease locus has been excluded from all known chromosomal regions harbouring an adRP gene or locus suggesting that there is (at least) one further adRP locus to be mapped in the future.

journal_name

Hum Mol Genet

journal_title

Human molecular genetics

authors

Xu SY,Schwartz M,Rosenberg T,Gal A

doi

10.1093/hmg/5.8.1193

subject

Has Abstract

pub_date

1996-08-01 00:00:00

pages

1193-7

issue

8

eissn

0964-6906

issn

1460-2083

pii

6d0065

journal_volume

5

pub_type

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