Abstract:
:Hereditary cancer represents approximately 5-10% of the total cancer burden and may account for 60,000 to 120,000 new cancer occurrences this year in the United States. New developments in molecular genetics and the cloning of cancer-prone genes have intensely fueled interest in dealing with hereditary forms of cancer. The authors provide an algorithm that depicts the process for the identification, study, and DNA-based genetic counseling of families being investigated under a research proposal at the Hereditary Cancer Institute of Creighton University School of Medicine. They have studied 56 hereditary nonpolyposis colorectal carcinoma families; in 18 of them, associated genomic mutations have been identified in affected members. DNA-based genetic counseling has been provided for seven of these families. The authors have also evaluated 131 hereditary breast-ovarian carcinoma families. BRCA1 and BRCA2 mutation searches have been performed for 76 of these families; BRCA1 mutations were found in 38 families and BRCA2 mutations in 9. The study of cancer-prone families is a powerful approach to cancer control, particularly when the germ-line mutation is identified in the family and individuals at high risk can be tested, once they provide informed consent, and receive DNA-based genetic counseling. Discovery of the germ-line mutation for cancer proneness provides an unparalleled opportunity to predict patients' life-time risk for cancer of specific anatomic sites, inclusive of a pattern of multiple primaries. Surveillance and management protocols, when melded to the particular syndrome's natural history, can be life-saving.
journal_name
Cancerjournal_title
Cancerauthors
Lynch HT,Watson P,Shaw TG,Lynch JF,Harty AE,Franklin BA,Kapler CR,Tinley ST,Liu Bdoi
10.1002/(sici)1097-0142(19991201)86:11+<2449::aid-subject
Has Abstractpub_date
1999-12-01 00:00:00pages
2449-56issue
11 Suppleissn
0008-543Xissn
1097-0142pii
10.1002/(SICI)1097-0142(19991201)86:11+<2449::AID-journal_volume
86pub_type
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