Marine omega‐3 fatty acid intake and survival of stage III colon cancer according to tumor molecular markers in NCCTG Phase III trial N0147 (Alliance)

Marine omega‐3 polyunsaturated fatty acids (MO3PUFAs) have anticancer properties and may improve colon cancer survival. However, it remains unknown whether the benefit differs by tumor molecular subtype. We examined data from a phase III randomized trial of FOLFOX or FOLFOX + cetuximab among 1,735 s...

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Veröffentlicht in:International journal of cancer 2019-07, Vol.145 (2), p.380-389
Hauptverfasser: Song, Mingyang, Ou, Fang‐Shu, Zemla, Tyler J., Hull, Mark A., Shi, Qian, Limburg, Paul J., Alberts, Steven R., Sinicrope, Frank A., Giovannucci, Edward L., Van Blarigan, Erin L., Meyerhardt, Jeffrey A., Chan, Andrew T.
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container_issue 2
container_start_page 380
container_title International journal of cancer
container_volume 145
creator Song, Mingyang
Ou, Fang‐Shu
Zemla, Tyler J.
Hull, Mark A.
Shi, Qian
Limburg, Paul J.
Alberts, Steven R.
Sinicrope, Frank A.
Giovannucci, Edward L.
Van Blarigan, Erin L.
Meyerhardt, Jeffrey A.
Chan, Andrew T.
description Marine omega‐3 polyunsaturated fatty acids (MO3PUFAs) have anticancer properties and may improve colon cancer survival. However, it remains unknown whether the benefit differs by tumor molecular subtype. We examined data from a phase III randomized trial of FOLFOX or FOLFOX + cetuximab among 1,735 stage III colon cancer patients who completed a dietary questionnaire at enrollment. Multivariable hazard ratios and 95% confidence intervals (CIs) were calculated for the association between MO3PUFA and disease‐free survival (DFS) and overall survival according to KRAS and BRAFV600E mutations and DNA mismatch repair (MMR) status. Higher MO3PUFA intake was associated with improved 3‐year DFS for KRAS wild‐type tumors (77% vs. 73%; HR: 0.84; 95% CI: 0.67–1.05) but not KRAS‐mutant tumors (64% vs. 70%; HR: 1.30; 95% CI: 0.97–1.73; Pinteraction = 0.02). Similar heterogeneity was found by MMR (Pinteraction = 0.14): higher MO3PUFA was associated with better 3‐year DFS for tumors with deficient MMR (72% vs. 67%) but not proficient MMR (72% vs. 72%). No heterogeneity was found by BRAFV600E mutation. Similar findings were obtained for overall survival. In conclusion, we found a suggestive beneficial association between higher MO3PUFA intake and improved survival among stage III colon cancer patients with wild‐type KRAS and deficient MMR. Given the relatively small number of cases with tumor molecular assessments, further studies, preferably through pooled analyses of multiples cohorts, are needed to validate our findings. What's new? Consumption of fish oil or related products containing marine omega‐3 polyunsaturated fatty acid (MO3PUFA) has long been associated with health benefits but effects on cancer survival remain unclear. Here the authors find tentative evidence that MO3PUFA supplementation in patients with stage III colon cancer is associated with better survival, but the benefit was restricted to tumors lacking mutations in the KRAS proto‐oncogene and arising from the microsatellite instability pathway, a finding with possible implications for improving patient care.
doi_str_mv 10.1002/ijc.32113
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However, it remains unknown whether the benefit differs by tumor molecular subtype. We examined data from a phase III randomized trial of FOLFOX or FOLFOX + cetuximab among 1,735 stage III colon cancer patients who completed a dietary questionnaire at enrollment. Multivariable hazard ratios and 95% confidence intervals (CIs) were calculated for the association between MO3PUFA and disease‐free survival (DFS) and overall survival according to KRAS and BRAFV600E mutations and DNA mismatch repair (MMR) status. Higher MO3PUFA intake was associated with improved 3‐year DFS for KRAS wild‐type tumors (77% vs. 73%; HR: 0.84; 95% CI: 0.67–1.05) but not KRAS‐mutant tumors (64% vs. 70%; HR: 1.30; 95% CI: 0.97–1.73; Pinteraction = 0.02). Similar heterogeneity was found by MMR (Pinteraction = 0.14): higher MO3PUFA was associated with better 3‐year DFS for tumors with deficient MMR (72% vs. 67%) but not proficient MMR (72% vs. 72%). No heterogeneity was found by BRAFV600E mutation. 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However, it remains unknown whether the benefit differs by tumor molecular subtype. We examined data from a phase III randomized trial of FOLFOX or FOLFOX + cetuximab among 1,735 stage III colon cancer patients who completed a dietary questionnaire at enrollment. Multivariable hazard ratios and 95% confidence intervals (CIs) were calculated for the association between MO3PUFA and disease‐free survival (DFS) and overall survival according to KRAS and BRAFV600E mutations and DNA mismatch repair (MMR) status. Higher MO3PUFA intake was associated with improved 3‐year DFS for KRAS wild‐type tumors (77% vs. 73%; HR: 0.84; 95% CI: 0.67–1.05) but not KRAS‐mutant tumors (64% vs. 70%; HR: 1.30; 95% CI: 0.97–1.73; Pinteraction = 0.02). Similar heterogeneity was found by MMR (Pinteraction = 0.14): higher MO3PUFA was associated with better 3‐year DFS for tumors with deficient MMR (72% vs. 67%) but not proficient MMR (72% vs. 72%). No heterogeneity was found by BRAFV600E mutation. 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Medical Complete (Alumni)</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>International journal of cancer</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Song, Mingyang</au><au>Ou, Fang‐Shu</au><au>Zemla, Tyler J.</au><au>Hull, Mark A.</au><au>Shi, Qian</au><au>Limburg, Paul J.</au><au>Alberts, Steven R.</au><au>Sinicrope, Frank A.</au><au>Giovannucci, Edward L.</au><au>Van Blarigan, Erin L.</au><au>Meyerhardt, Jeffrey A.</au><au>Chan, Andrew T.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Marine omega‐3 fatty acid intake and survival of stage III colon cancer according to tumor molecular markers in NCCTG Phase III trial N0147 (Alliance)</atitle><jtitle>International journal of cancer</jtitle><addtitle>Int J Cancer</addtitle><date>2019-07-15</date><risdate>2019</risdate><volume>145</volume><issue>2</issue><spage>380</spage><epage>389</epage><pages>380-389</pages><issn>0020-7136</issn><eissn>1097-0215</eissn><abstract>Marine omega‐3 polyunsaturated fatty acids (MO3PUFAs) have anticancer properties and may improve colon cancer survival. However, it remains unknown whether the benefit differs by tumor molecular subtype. We examined data from a phase III randomized trial of FOLFOX or FOLFOX + cetuximab among 1,735 stage III colon cancer patients who completed a dietary questionnaire at enrollment. Multivariable hazard ratios and 95% confidence intervals (CIs) were calculated for the association between MO3PUFA and disease‐free survival (DFS) and overall survival according to KRAS and BRAFV600E mutations and DNA mismatch repair (MMR) status. Higher MO3PUFA intake was associated with improved 3‐year DFS for KRAS wild‐type tumors (77% vs. 73%; HR: 0.84; 95% CI: 0.67–1.05) but not KRAS‐mutant tumors (64% vs. 70%; HR: 1.30; 95% CI: 0.97–1.73; Pinteraction = 0.02). Similar heterogeneity was found by MMR (Pinteraction = 0.14): higher MO3PUFA was associated with better 3‐year DFS for tumors with deficient MMR (72% vs. 67%) but not proficient MMR (72% vs. 72%). No heterogeneity was found by BRAFV600E mutation. Similar findings were obtained for overall survival. In conclusion, we found a suggestive beneficial association between higher MO3PUFA intake and improved survival among stage III colon cancer patients with wild‐type KRAS and deficient MMR. Given the relatively small number of cases with tumor molecular assessments, further studies, preferably through pooled analyses of multiples cohorts, are needed to validate our findings. What's new? Consumption of fish oil or related products containing marine omega‐3 polyunsaturated fatty acid (MO3PUFA) has long been associated with health benefits but effects on cancer survival remain unclear. Here the authors find tentative evidence that MO3PUFA supplementation in patients with stage III colon cancer is associated with better survival, but the benefit was restricted to tumors lacking mutations in the KRAS proto‐oncogene and arising from the microsatellite instability pathway, a finding with possible implications for improving patient care.</abstract><cop>Hoboken, USA</cop><pub>John Wiley &amp; Sons, Inc</pub><pmid>30623420</pmid><doi>10.1002/ijc.32113</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0002-1324-0316</orcidid><oa>free_for_read</oa></addata></record>
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subjects Aged
Cancer
Cetuximab - therapeutic use
Colon cancer
Colonic Neoplasms - diet therapy
Colonic Neoplasms - drug therapy
Colonic Neoplasms - genetics
Colorectal cancer
Disease-Free Survival
DNA repair
Fatty Acids, Omega-3 - administration & dosage
Female
Fish Oils - administration & dosage
Fluorouracil - therapeutic use
Heterogeneity
Humans
inflammation
Male
Medical research
Microsatellite Instability
Middle Aged
Mismatch repair
Monoclonal antibodies
Mutation
Neoplasm Staging
nutrition
Omega-3 fatty acids
Polyunsaturated fatty acids
Proto-Oncogene Proteins B-raf - genetics
Proto-Oncogene Proteins p21(ras) - genetics
Survival
survivorship care
Targeted cancer therapy
Treatment Outcome
tumor microenvironment
Tumors
title Marine omega‐3 fatty acid intake and survival of stage III colon cancer according to tumor molecular markers in NCCTG Phase III trial N0147 (Alliance)
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