Human Genetics

, Volume 78, Issue 1, pp 60–64

Analysis of linkage relationships of X-linked retinitis pigmentosa with the following Xp loci: L1.28, OTC, 754, XJ-1.1, pERT87, and C7

  • Michael J. Denton
  • Jia-De Chen
  • Sara Serravalle
  • Peter Colley
  • Francis B. Halliday
  • Jennifer Donald
Original Investigations

Summary

A number of variants of X-linked retinitis pigmentosa (XLRP) have been described. In one variant, listed in the McKusick (McK) catalogue (McKusick 1983) as entry no. 30320, the heterozygotes exhibit a golden metallic or tapetal reflex. Three large pedigrees segregating for XLRP with the characteristic tapetal reflex in the heterozygotes were examined, and the linkage between the XLRP locus and Xp loci, L1.28, OTC, 754, XJ-1.1, pERT87 and C7 was measured. The strongest linkage was found to be between the XLRP locus and OTC. In addition, recombinational evidence drawn from the three pedigrees suggests that the XLRP locus is distal to L1.28 and proximal to 754. This putative location of the XLRP gene between L1.28 and 754 taken together with the tight linkage to OTC, a locus already located between L1.28 and 754, leads us to propose a gene order of centromere-L1.28-OTC/XLRP-754-telomere.

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Copyright information

© Springer-Verlag 1988

Authors and Affiliations

  • Michael J. Denton
    • 1
  • Jia-De Chen
    • 1
  • Sara Serravalle
    • 1
  • Peter Colley
    • 1
  • Francis B. Halliday
    • 2
  • Jennifer Donald
    • 3
  1. 1.Division of PathologyPrince of Wales HospitalRandwickAustralia
  2. 2.Retinal Dystrophy ServicePrince of Wales HospitalRandwickAustralia
  3. 3.School of Biological SciencesMacquarie UniversityAustralia
  4. 4.Department of Clinical ChemistryPrince of Wales HospitalRandwickAustralia

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