The Diet of Higher Insulinemic Potential Is Not Associated with Worse Survival in Patients with Stage III Colon Cancer (Alliance).

Journal Article (Journal Article)

BACKGROUND: Hyperinsulinemia is considered to be important in the development of colon cancer, but few studies have investigated the associations of hyperinsulinemia with colon cancer survival via dietary scores. METHODS: Empirical dietary index for hyperinsulinemia (EDIH) was derived to assess the insulinemic potential of daily diets reflecting the long-term insulin exposure, with higher (more positive) scores indicating higher insulinemic diets. We prospectively estimated the HRs and 95% confidence intervals (CI) to investigate the association of EDIH with disease-free, recurrence-free, and overall survival among patients with stage III colon cancer (1999-2009) enrolled in a randomized adjuvant chemotherapy trial (CALGB 89803). RESULTS: Of 1,024 patients (median follow-up: 7.3 years), 311 died, 350 had recurrences, and 394 had events for disease-free survival. Compared with patients in the lowest quintile of EDIH, the corresponding HRs of patients in the highest quintile for disease-free survival events, cancer recurrence, and overall mortality were 0.80 (95% CI, 0.56-1.15), 0.76 (95% CI, 0.51-1.11), and 0.77 (95% CI, 0.52-1.14). CONCLUSIONS: Higher EDIH was not associated with the risk of colon cancer recurrence or mortality in this population of patients with stage III colon cancer. IMPACT: EDIH, as a measure of dietary insulinemic potential, may be associated with colon cancer risk but not survival in patients with late-stage colon cancer.

Full Text

Duke Authors

Cited Authors

  • Cheng, E; Zhang, S; Ou, F-S; Mullen, B; Ng, K; Saltz, LB; Niedzwiecki, D; Mayer, RJ; Mowat, RB; Whittom, R; Hantel, A; Benson, A; Atienza, D; Messino, M; Kindler, H; Giovannucci, EL; Van Blarigan, EL; Meyerhardt, JA; Fuchs, CS

Published Date

  • August 2020

Published In

Volume / Issue

  • 29 / 8

Start / End Page

  • 1692 - 1695

PubMed ID

  • 32499312

Pubmed Central ID

  • PMC7415738

Electronic International Standard Serial Number (EISSN)

  • 1538-7755

Digital Object Identifier (DOI)

  • 10.1158/1055-9965.EPI-19-1454

Language

  • eng

Conference Location

  • United States