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Am J Hum Genet. 1992 Feb;50(2):317-30.

Fine mapping of the McLeod locus (XK) to a 150-380-kb region in Xp21.

Author information

  • 1Human Genetics Laboratory, Imperial Cancer Research Fund, Oxford.

Abstract

McLeod syndrome, characterized by acanthocytosis and the absence of a red-blood-cell Kell antigen (Kx), is a multisystem disorder involving a late-onset myopathy, splenomegaly, and neurological defects. The locus for this syndrome has been mapped, by deletion analysis, to a region between the loci for Duchenne muscular dystrophy (DMD) and chronic granulomatous disease (CGD). In this study, we describe a new marker, 3BH/R 0.3 (DXS 709), isolated by cloning the deletion breakpoint of a DMD patient. A long-range restriction map of Xp21, encompassing the gene loci for McLeod and CGD, was constructed, and multiple CpG islands were found clustered in a 700-kb region. Using the new marker, we have limited the McLeod syndrome critical region to 150-380-kb. Within this interval, two CpG-rich islands which may represent candidate sites for the McLeod gene were identified.

PMID:
1734714
[PubMed - indexed for MEDLINE]
PMCID:
PMC1682457
Free PMC Article
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