A radiation hybrid map of the BRCA1 region.
1994
A locus on chromosome 17q, designated BRCA1', has been identified as a predisposition gene for breast cancer. A panel of chromosome 17-specific radiation-reduced somatic cell hybrid clones has been assembled for high-resolution mapping of chromosome 17. A series of 35 markers, known to span the BRCA1 locus, were tested against this hybrid panel by PCR assays. Statistical analysis of these data yields a BRCA1 radiation hybrid map at a density sufficient to initiate YAC cloning and pulsed-field gel electrophoretic mapping of the candidate regional In addition, many of the markers reveal genetic polymorphisms and may be tested in breast cancer families and in loss-of-heterozygosity studies of sporadic breast cancers to better define the BRCA1 gene candidate region. 33 refs., 1 fig., 2 tabs.
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