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A radiation hybrid map of the BRCA1 region of chromosome 17q12-q21

Journal Article · · Genomics; (United States)
; ; ; ; ; ;  [1]; ; ;  [2];  [3]
  1. Univ. of Michigan, Ann Arbor, MI (United States) Howard Hughes Medical Institute, Ann Arbor, MI (United States)
  2. Univ. of Michigan, Ann Arbor, MI (United States)
  3. Univ. of Michigan, Ann Arbor, MI (United States) Michigan Human Genome Center, Ann Arbor, MI (United States) Howard Hughes Medical Institute, Ann Arbor, MI (United States)
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The chromosomal region 17q12-q21 contains a gene (BRCA1) conferring susceptibility to early-onset familial breast and ovarian cancer. An 8000-rad radiation-reduced hybrid (RH) panel was constructed to provide a resource for long-range mapping of this region. A large fraction of the hybrids ([approximately]90%) retained detectable human chromosome 17 sequences. The complete panel of 76 hybrids was scored for the presence or absence of 22 markers from this chromosomal region, including 14 cloned genes, seven microsatellite repeats, and one anonymous DNA segment. Statistical analysis of the marker retention data employing multipoint methods provided both comprehensive and framework maps of this chromosomal region, including distance estimates between adjacent markers. The comprehensive RH map includes 17 loci and spans 179 cRays[sub (8000)]. Likelihood ratios of at least 1000:1 support the 10-locus framework order: cen-D17S250-ERBB2-(THRA1, TOP2A)-D17S855-PPY-D17S190-MTBT1-GP3A-BTR-D17S588-tel. The order obtained from RH mapping, when used in conjunction with other methods, will be useful in linkage analysis of breast cancer families and will facilitate the development of a physical map of this region. 42 refs., 3 figs., 2 tabs.
OSTI ID:
7077377
Journal Information:
Genomics; (United States), Journal Name: Genomics; (United States) Vol. 17:3; ISSN 0888-7543; ISSN GNMCEP
Country of Publication:
United States
Language:
English

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Related Subjects

550400* -- Genetics
59 BASIC BIOLOGICAL SCIENCES
BODY
CHROMOSOMES
DISEASES
DNA HYBRIDIZATION
GENETIC MAPPING
GLANDS
HEREDITARY DISEASES
HUMAN CHROMOSOME 17
HUMAN CHROMOSOMES
HYBRIDIZATION
MAMMARY GLANDS
MAPPING
NEOPLASMS
ORGANS