Journal
ENDOCRINE-RELATED CANCER
Volume 16, Issue 2, Pages 585-597Publisher
BIOSCIENTIFICA LTD
DOI: 10.1677/ERC-08-0301
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Funding
- NIH
- National Cancer Institute
- International Agency for Research on Cancer (IARC)
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Survival of metastatic gastroenteropancreatic well-differentiated endocrine carcinoma (GEP WDEC) is not well characterized. We evaluated the long-term outcome and prognostic factors for survival in 118 patients with distant metastases from GEP WDEC. Inclusion criteria were 1) pathological review by a single pathologist according to the present WHO criteria, 2) absence of previous therapy apart from surgery, 3) complete morphological evaluation within 3 months including somatostatin receptor scintigraphy, and 4) follow-up at Gustave-Roussy Institute until death or study's end Clinical, biological marker, and pathological parameters were analyzed in univariate and multivariate statistical models. Survival after the first complete imaging work-up of the metastatic disease was determined using Kaplan-Meier method. Overall, survival for 5 years after the diagnosis of metastatic disease was 54%. In multivariate analysis, age (hazard ratio (HR): 1 05, 95% confidence interval (Cl): 1.01-1 08, P = 0.01), the number of liver metastases (HR: 3.4, 95% CI 1 4-8 32 P = 0 01), tumor slope (HR. 1.1, 95% Cl: 1.0-1.1, P = 0 001), and initial surgery (HR: 0.3, 95% Cl. 0.1-0.8, P = 0.01) were predictive of survival. Five-year survival was 100%, 91% (95% Cl, 51-98%), 62% (95% Cl, 37-83%), and 9% (95% Cl, 6-32%) when patients had 0, 1, 2, 3 or more poor prognostic features respectively. This study enables the stratification of metastatic GEP WDEC patients into distinct risk groups These risk categories can be used to tailor therapeutic approaches and also to design and interpret clinical trials
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