, Volume 102, Issue 4, pp 493-494

Refined genetic mapping of autosomal dominant retinitis pigmentosa locus RP18 reduces the critical region to 2 cM between D1S442 and D1S2858 on chromosome 1q

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Linkage analysis was performed on a large Danish family to refine the position of RP18, the locus for autosomal dominant retinitis pigmentosa, mapped previously between D1S534 and D1S305 in chromosome 1p13–q21. We genotyped the family members for five microsatellite-type DNA polymorphisms and mapped RP18 between D1S422 and D1S2858 to a region of less than 2 cM. No obvious candidate gene has yet been assigned to the chromosomal interval defined here.

Received: 15 September 1997 / Accepted: 12 January 1998