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Plasma fetuin-A concentration, genetic variation in the AHSG gene and risk of colorectal cancer
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2015 (English)In: International Journal of Cancer, ISSN 0020-7136, E-ISSN 1097-0215, Vol. 137, no 4, 911-920 p.Article in journal (Refereed) Published
Abstract [en]

Fetuin-A, also referred to as alpha 2-Heremans-Schmid glycoprotein (AHSG), is a liver protein known to inhibit insulin actions. Hyperinsulinemia is a possible risk factor for colorectal cancer; however, the role of fetuin-A in the development of colorectal cancer is unclear. We investigated the association between circulating fetuin-A and colorectal cancer risk in a nested case-control study within the European Prospective Investigation into Cancer and Nutrition. Fetuin-A concentrations were measured in prediagnostic plasma samples from 1,367 colorectal cancer cases and 1,367 matched controls. In conditional logistic regression models adjusted for potential confounders, the estimated relative risk (95% confidence interval) of colorectal cancer per 40 mg/mL higher fetuin-A concentrations (approximately one standard deviation) was 1.13 (1.02-1.24) overall, 1.21 (1.05-1.39) in men, 1.06 (0.93-1.22) in women, 1.13 (1.00-1.27) for colon cancer and 1.12 (0.94-1.32) for rectal cancer. To improve causal inference in a Mendelian Randomization approach, five tagging single nucleotide polymorphisms of the AHSG gene were genotyped in a subset of 456 case-control pairs. The AHSG allele-score explained 21% of the interindividual variation in plasma fetuin-A concentrations. In instrumental variable analysis, genetically raised fetuin-A was not associated with colorectal cancer risk (relative risk per 40 mg/mL genetically determined higher fetuin-A was 0.98, 95% confidence interval: 0.73-1.33). The findings of our study indicate a modest linear association between fetuin-A concentrations and risk of colorectal cancer but suggest that fetuin-A may not be causally related to colorectal cancer development.

Place, publisher, year, edition, pages
2015. Vol. 137, no 4, 911-920 p.
Keyword [en]
fetuin-A, AHSG, colorectal cancer
National Category
Cancer and Oncology
URN: urn:nbn:se:umu:diva-106308DOI: 10.1002/ijc.29448ISI: 000356428400017PubMedID: 25611809OAI: diva2:842381
Available from: 2015-07-20 Created: 2015-07-10 Last updated: 2015-07-20Bibliographically approved

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Ljuslinder, IngridNyström, Hanna
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OncologyDepartment of Surgical and Perioperative Sciences
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