Abstract:
:Proto-oncogenes are genes coding for factors involved in cellular growth, reproduction, and differentiation. Cancer results through mutations of proto-oncogenes or through other mechanisms involving the products of proto-oncogenes. This study asks whether serum proteins immunologically related to the products of proto-oncogenes distinguish older men and women who manifest a new cancer during a 2-year follow-up. The authors conducted a nested case-control study that involved 248 men and women selected from a larger group of older (age > or = 65 years) healthy volunteers in a randomized clinical trial of preventive clinical services. Study subjects included 37 with a fatal cancer, 59 non-fatal breast, prostate, colon, or lung cancer, 58 hospitalized with at least one discharge diagnosis that coded to benign neoplasia (International Classification of Diseases, 9th Revision codes 210-239), and 94 randomly selected controls. Using seven monoclonal antibodies prepared against ras, erb-B, FES, myb, and SIS polypeptide sequences, immunoblots detected 17 proteins in serum collected from subjects before the clinical recognition of cancer. Five oncogene-related serum proteins appeared to distinguish older persons who manifested fatal (but not non-fatal) cancer over a brief (2-year) follow-up. Older persons hospitalized with benign neoplasia also had higher levels of these serum proteins. Relative to the 94 control subjects, a 52,000 dalton SIS-related protein (odd ratio (OR) = 5.9, 95% confidence interval (CI) 1.4-24.9) and a 35,000 dalton k-ras-related protein (OR = 11.3, 95% CI 1.2-104) were particularly common in serum from the 37 subjects who manifested a fatal cancer.
journal_name
Am J Epidemioljournal_title
American journal of epidemiologyauthors
Weissfeld JL,Larsen RD,Niman HL,Kuller LHdoi
10.1093/oxfordjournals.aje.a008995subject
Has Abstractpub_date
1996-10-15 00:00:00pages
723-7issue
8eissn
0002-9262issn
1476-6256journal_volume
144pub_type
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