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Open Access 01-12-2020 | Colorectal Cancer | Review

Associations between nutritional factors and KRAS mutations in colorectal cancer: a systematic review

Authors: Achraf El Asri, Btissame Zarrouq, Khaoula El Kinany, Laila Bouguenouch, Karim Ouldim, Karima El Rhazi

Published in: BMC Cancer | Issue 1/2020

Abstract

Background

Between 30 and 50% of colon tumors have mutations in the Kirsten-ras (KRAS) gene, which have a large nutritional attributable risk. Despite its high frequency in colorectal cancer (CRC), data to support specific associations between KRAS mutations in CRC and diet are sparse. Here, we conducted a systematic review to summarize the current epidemiological evidence on the association between various dietary factors and KRAS mutations.

Methods

PubMed, Science Direct, and Cochrane databases were searched for relevant studies published until December 31, 2019, using inclusion and exclusion criteria in accordance with PRISMA guidelines. We analyzed the studies to find associations between nutritional factors and CRC tumors with KRAS mutations in humans.

Results

We identified 28 relevant studies to include in this systematic review. In-depth analyses showed unclear associations between nutritional factors and KRAS mutations in CRC. Most epidemiological studies in the same nutrient or food often reported conflicting and/or inconclusive findings, whereas for some dietary factors, the results were homogeneous.

Conclusions

Further research using a more robust prospective cohort study is needed to lend more credence to the epidemiological associations found between KRAS mutations and dietary factors.

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Title: Associations between nutritional factors and KRAS mutations in colorectal cancer: a systematic review
Authors: Achraf El Asri
Btissame Zarrouq
Khaoula El Kinany
Laila Bouguenouch
Karim Ouldim
Karima El Rhazi
Publication date: 01-12-2020
Publisher: BioMed Central
Keywords: Colorectal Cancer
Colorectal Cancer
Published in: BMC Cancer / Issue 1/2020
Electronic ISSN: 1471-2407
DOI: https://doi.org/10.1186/s12885-020-07189-2

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