Fine-mapping the putative chromosome 17q21-22 prostate cancer susceptibility gene to a 10 cM region based on linkage analysis.

Autor: Lange EM; Department of Genetics, University of North Carolina, Chapel Hill, NC, USA., Robbins CM, Gillanders EM, Zheng SL, Xu J, Wang Y, White KA, Chang BL, Ho LA, Trent JM, Carpten JD, Isaacs WB, Cooney KA
Jazyk: angličtina
Zdroj: Human genetics [Hum Genet] 2007 Mar; Vol. 121 (1), pp. 49-55. Date of Electronic Publication: 2006 Nov 21.
DOI: 10.1007/s00439-006-0274-2
Abstrakt: Prostate cancer linkage studies have suggested the existence of a prostate cancer susceptibility gene on chromosome 17q21-22. We now report the results of an extended linkage analysis including 95 new multiplex prostate cancer families and 9 additional microsatellite markers resulting in a maximum LOD score of 2.99 at approximately 81-82 cM for all 453 pedigrees. Results from these 95 new pedigrees provide additional support for a chromosome 17q21-22 prostate cancer susceptibility gene. Inclusion of the 9 additional markers significantly reduced the size of the candidate region, as defined using a 1-LOD support interval, especially when focusing analyses on subsets of pedigrees with four or more confirmed affecteds or average age of diagnosis less than or equal to 65 years. A novel subset analysis of only those families (n = 147) that had four or more prostate cancer cases and an average age of prostate cancer diagnosis < or = 65 years results in a maximum LOD score of 5.49 at 78 cM with a 1-LOD support interval of 10 cM. This large set of pedigrees with four more prostate cancer cases characterized by early-onset disease will serve as a useful resource for identifying the putative 17q21-22 prostate cancer susceptibility gene.
Databáze: MEDLINE