Volume 146, Issue 2 pp. 363-372
Cancer Epidemiology

DNA repair and cancer in colon and rectum: Novel players in genetic susceptibility

Barbara Pardini

Corresponding Author

Barbara Pardini

Italian Institute for Genomic Medicine (IIGM), Turin, Italy

Department of Medical Sciences, University of Turin, Turin, Italy

B.P., A.C., U.P., A.N., and S.L. contributed equally to this workCorrespondence to: Alda Corrado, Department of Biology, University of Pisa, Via Derna 1, 56126 Pisa, Italy, Tel.: +390502211524, Fax: +390502211527, E-mail: [email protected]; or Barbara Pardini, Italian Institute for Genomic Medicine (IIGM), Via Nizza 52, 10126 Turin, Italy, Tel.: +390116709542, Fax: +390112365601, E-mail: [email protected]Search for more papers by this author
Alda Corrado

Corresponding Author

Alda Corrado

Department of Biology, University of Pisa, Pisa, Italy

B.P., A.C., U.P., A.N., and S.L. contributed equally to this workCorrespondence to: Alda Corrado, Department of Biology, University of Pisa, Via Derna 1, 56126 Pisa, Italy, Tel.: +390502211524, Fax: +390502211527, E-mail: [email protected]; or Barbara Pardini, Italian Institute for Genomic Medicine (IIGM), Via Nizza 52, 10126 Turin, Italy, Tel.: +390116709542, Fax: +390112365601, E-mail: [email protected]Search for more papers by this author
Elisa Paolicchi

Elisa Paolicchi

Department of Biology, University of Pisa, Pisa, Italy

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Giovanni Cugliari

Giovanni Cugliari

Italian Institute for Genomic Medicine (IIGM), Turin, Italy

Department of Medical Sciences, University of Turin, Turin, Italy

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Sonja I. Berndt

Sonja I. Berndt

Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD

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Stephane Bezieau

Stephane Bezieau

Service de Génétique Médicale, Centre Hospitalier Universitaire (CHU), Nantes, France

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Stephanie A. Bien

Stephanie A. Bien

Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA

School of Public Health, University of Washington, Seattle, WA

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Hermann Brenner

Hermann Brenner

Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Heidelberg, Germany

Division of Preventive Oncology, German Cancer Research Center (DKFZ) and National Center for Tumor Diseases (NCT), Heidelberg, Germany

German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany

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Bette J. Caan

Bette J. Caan

Kaiser Permanente Medical Care Program of Northern California, Oakland, CA

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Peter T. Campbell

Peter T. Campbell

Epidemiology Research Program, American Cancer Society, Atlanta, GA

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Graham Casey

Graham Casey

Public Health Sciences, University of Virginia, Charlottesville, VA

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Andrew T. Chan

Andrew T. Chan

Division of Gastroenterology, Massachusetts General Hospital, Boston, MA

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Jenny Chang-Claude

Jenny Chang-Claude

Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany

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Michelle Cotterchio

Michelle Cotterchio

Prevention and Cancer Control, Cancer Care Ontario, Toronto, ON, Canada

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Manish Gala

Manish Gala

Division of Gastroenterology, Massachusetts General Hospital, Boston, MA

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Steven J. Gallinger

Steven J. Gallinger

Department of Surgery, Mount Sinai Hospital, Toronto, ON, Canada

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Robert W. Haile

Robert W. Haile

Stanford University School of Medicine, Stanford, CA

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Tabitha A. Harrison

Tabitha A. Harrison

Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA

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Richard B. Hayes

Richard B. Hayes

Division of Epidemiology, Department of Population Health, New York University School of Medicine, New York, NY

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Michael Hoffmeister

Michael Hoffmeister

Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Heidelberg, Germany

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John L. Hopper

John L. Hopper

Melbourne School of Population Health, The University of Melbourne, Melbourne, VIC, Australia

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Li Hsu

Li Hsu

Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA

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Jeroen Huyghe

Jeroen Huyghe

Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA

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Mark A. Jenkins

Mark A. Jenkins

Melbourne School of Population Health, The University of Melbourne, Melbourne, VIC, Australia

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Loic Le Marchand

Loic Le Marchand

Epidemiology Program, Research Cancer Center of Hawaii, University of Hawaii, Honolulu, HI

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Yi Lin

Yi Lin

Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA

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Noralane M. Lindor

Noralane M. Lindor

Department of Health Sciences Research, Mayo Clinic Arizona, Scottsdale, AZ

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Hongmei Nan

Hongmei Nan

Department of Epidemiology, Richard M. Fairbanks School of Public Health, Indiana University, Indianapolis, IN

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Polly A. Newcomb

Polly A. Newcomb

Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA

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Shuji Ogino

Shuji Ogino

Program in MPE Molecular Pathological Epidemiology, Department of Pathology, Brigham and Women's Hospital, and Harvard Medical School, Boston, MA

Department of Oncologic Pathology, Dana-Farber Cancer Institute, Boston, MA

Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA

Broad Institute of MIT and Harvard, Cambridge, MA

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John D. Potter

John D. Potter

Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA

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Robert E. Schoen

Robert E. Schoen

Department of Medicine and Epidemiology, University of Pittsburgh Medical Center, Pittsburgh, PA

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Martha L. Slattery

Martha L. Slattery

Department of Internal Medicine, University of Utah Health Sciences Center, Salt Lake City, UT

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Emily White

Emily White

Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA

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Ludmila Vodickova

Ludmila Vodickova

Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University, Prague, Czech Republic

Faculty of Medicine and Biomedical Center in Pilsen, Charles University, Pilsen, Czech Republic

Department of Molecular Biology of Cancer, Institute of Experimental Medicine, The Czech Academy of Sciences, Prague, Czech Republic

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Veronika Vymetalkova

Veronika Vymetalkova

Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University, Prague, Czech Republic

Faculty of Medicine and Biomedical Center in Pilsen, Charles University, Pilsen, Czech Republic

Department of Molecular Biology of Cancer, Institute of Experimental Medicine, The Czech Academy of Sciences, Prague, Czech Republic

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Pavel Vodicka

Pavel Vodicka

Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University, Prague, Czech Republic

Faculty of Medicine and Biomedical Center in Pilsen, Charles University, Pilsen, Czech Republic

Department of Molecular Biology of Cancer, Institute of Experimental Medicine, The Czech Academy of Sciences, Prague, Czech Republic

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Federica Gemignani

Federica Gemignani

Department of Biology, University of Pisa, Pisa, Italy

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Ulrike Peters

Ulrike Peters

Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA

B.P., A.C., U.P., A.N., and S.L. contributed equally to this workSearch for more papers by this author
Alessio Naccarati

Alessio Naccarati

Italian Institute for Genomic Medicine (IIGM), Turin, Italy

Department of Molecular Biology of Cancer, Institute of Experimental Medicine, The Czech Academy of Sciences, Prague, Czech Republic

B.P., A.C., U.P., A.N., and S.L. contributed equally to this workSearch for more papers by this author
Stefano Landi

Stefano Landi

Department of Biology, University of Pisa, Pisa, Italy

B.P., A.C., U.P., A.N., and S.L. contributed equally to this workSearch for more papers by this author
First published: 17 June 2019
Citations: 23
Conflict of interest: The authors declare no conflict of interests.
Data availability: All custom Infinium OncoArray-500K array and Illumina HumanOmniExpressExome-8v1–2 array data used in the study have been deposited at dbGaP under accession number phs001415.v1.p1 and phs001315.v1.p1, respectively. Genotype data for the studies have been deposited at dbGaP under accession number phs001078.v1.p1.

Abstract

Interindividual differences in DNA repair systems may play a role in modulating the individual risk of developing colorectal cancer. To better ascertain the role of DNA repair gene polymorphisms on colon and rectal cancer risk individually, we evaluated 15,419 single nucleotide polymorphisms (SNPs) within 185 DNA repair genes using GWAS data from the Colon Cancer Family Registry (CCFR) and the Genetics and Epidemiology of Colorectal Cancer Consortium (GECCO), which included 8,178 colon cancer, 2,936 rectum cancer cases and 14,659 controls. Rs1800734 (in MLH1 gene) was associated with colon cancer risk (p-value = 3.5 × 10−6) and rs2189517 (in RAD51B) with rectal cancer risk (p-value = 5.7 × 10−6). The results had statistical significance close to the Bonferroni corrected p-value of 5.8 × 10−6. Ninety-four SNPs were significantly associated with colorectal cancer risk after Binomial Sequential Goodness of Fit (BSGoF) procedure and confirmed the relevance of DNA mismatch repair (MMR) and homologous recombination pathways for colon and rectum cancer, respectively. Defects in MMR genes are known to be crucial for familial form of colorectal cancer but our findings suggest that specific genetic variations in MLH1 are important also in the individual predisposition to sporadic colon cancer. Other SNPs associated with the risk of colon cancer (e.g., rs16906252 in MGMT) were found to affect mRNA expression levels in colon transverse and therefore working as possible cis-eQTL suggesting possible mechanisms of carcinogenesis.

Abstract

What's new?

DNA repair defects allow mutations to pile up, which can lead to cancer. These authors searched for single nucleotide polymorphisms (SNPs) in DNA repair pathways associated with sporadic colorectal cancer. So far, genome-wide association studies (GWAS) have not detected many such SNPs, likely due to the small effect of each variant individually. Here, the authors combined data from two large colorectal cancer consortia, evaluating 15,419 SNPs in 185 DNA repair genes. They uncovered 2 SNPs in genes in the mismatch repair and homologous recombination pathways associated with increased colon cancer risk. Further investigation of these variants could lead to better personalized treatments.

Data availability

All custom Infinium OncoArray-500K array and Illumina HumanOmniExpressExome-8v1–2 array data used in the study have been deposited at dbGaP under accession number phs001415.v1.p1 and phs001315.v1.p1, respectively. Genotype data for the studies have been deposited at dbGaP under accession number phs001078.v1.p1.

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