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Original Article
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Volume 333:970-975 October 12, 1995 Number 15
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Increased Risk of Pancreatic Cancer in Melanoma-Prone Kindreds with p16INK4 Mutations
Alisa M. Goldstein, Ph.D., Mary C. Fraser, R.N., M.A., Jeffery P. Struewing, M.D., M.S., Christopher J. Hussussian, M.D., Koustubh Ranade, Ph.D., Deborah P. Zametkin, M.S.N., Laura S. Fontaine, B.S.N., Sara M. Organic, B.A., Nicholas C. Dracopoli, Ph.D., Wallace H. Clark, M.D., and Margaret A. Tucker, M.D.

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ABSTRACT

Background A gene on chromosome 9p, p16INK4, has been implicated in the pathogenesis of cutaneous malignant melanoma in 19 melanoma-prone families. In 10 of these kindreds mutations that impaired the function of the p16INK4 protein (p16M alleles) cosegregated with the disease. By contrast, in the other nine kindreds the mutation did not alter the function of p16INK4 (p16W alleles). We looked for differences in clinical and genetic epidemiologic features in these two groups of families.

Methods We compared the median ages at diagnosis of melanoma, number of melanomas, thickness of the tumors, and number of nevi in the kindreds. We estimated prospectively the risks of melanoma or other cancers in families followed for 6 to 18 years and the risks of other cancers since 1925 (the entire period) by comparing the number of cancer cases observed with the number expected.

Results The risk of invasive melanoma was increased by a factor of 75 in kindreds with p16M alleles and a factor of 38 in kindreds with p16W alleles. Although this difference was not significant (P = 0.14), there was a striking difference in the risk of other tumors. In kindreds with p16M alleles, the risk of pancreatic cancer was increased by a factor of 13 in the prospective period (2 cases observed, 0.15 expected; standardized incidence ratio, 13.1; 95 percent confidence interval, 1.5 to 47.4) and by a factor of 22 in the entire period (7 cases observed, 0.32 expected; standardized incidence ratio, 21.8; 95 percent confidence interval, 8.7 to 44.8). In contrast, we found no cases of pancreatic cancer in kindreds with p16W alleles.

Conclusions The development of pancreatic cancer in kindreds prone to melanoma may require a p16M mutation. Genetic factors, such as the kind of mutation found in p16INK4, may explain the inconsistent occurrence of other cancers in these kindreds.


Source Information

From the Genetic Epidemiology Branch, National Cancer Institute, Bethesda, Md. (a.M.G., M.C.F., J.P.S., S.M.O., M.A.T.); the Department of Nursing, Warren G. Magnuson Clinical Center, Bethesda, Md. (M.C.F.); the National Center for Human genome Research, National Institutes of Health, Bethesda, md. (J.P.S., C.J.H., K.R., N.C.D.); the Department of Surgery, Washington University School of Medicine, St. Louis (C.J.H.); Westat, Inc., Rockville, Md. (D.P.Z.); Battelle/SRA, Rockville, Md. (L.S.F.); Sequana Therapeutics, Inc., La Jolla, Calif. (N.C.D.); the Pigmented Lesion Study Group and Department of Dermatology, University of Pennsylvania School of Medicine, Philadelphia (W.H.C.); and the Department of Pathology, Beth Israel Hospital, Harvard Medical School, Boston (W.H.C.).

Address reprint requests to Dr. Goldstein at Genetic Epidemiology Branch, Executive Plaza North, Rm. 439, 6130 Executive Blvd., MSC 7372, Bethesda, MD 20892-7372.

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Related Letters:

Familial Melanoma and Pancreatic Cancer
Ciotti P., Strigini P., Bianchi-Scarrà G., Wright F. A., Thomas R. G., Bergman W., Gruis N., Goldstein A. M., Tucker M. A., Whelan A. J., Bartsch D., Goodfellow P. J.
Extract | Full Text  
N Engl J Med 1996; 334:469-472, Feb 15, 1996. Correspondence

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