About the Authors

Robert Pilarski

Robert.Pilarski@osumc.edu

Affiliation The Ohio State University Comprehensive Cancer Center and Department of Internal Medicine, Columbus, Ohio, United States of America

Divya A. Patel

Affiliation Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University, New Haven, Connecticut, United States of America

Jeffrey Weitzel

Affiliation Division of Clinical Cancer Genetics, City of Hope, Duarte, California, United States of America

Terri McVeigh

Affiliation Discipline of Surgery, National University of Ireland, Galway, Ireland

Jemima J. Dorairaj

Affiliation Discipline of Surgery, National University of Ireland, Galway, Ireland

Helen M. Heneghan

Affiliation Discipline of Surgery, National University of Ireland, Galway, Ireland

Nicola Miller

Affiliation Discipline of Surgery, National University of Ireland, Galway, Ireland

Joanne B. Weidhaas

Affiliation Department of Therapeutic Radiology, Yale University, New Haven, Connecticut, United States of America

Michael J. Kerin

Affiliation Discipline of Surgery, National University of Ireland, Galway, Ireland

Megan McKenna

Affiliation Cancer Center of Santa Barbara, Santa Barbara, California, United States of America

Xifeng Wu

Affiliation Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America

Michelle Hildebrandt

Affiliation Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America

Daniel Zelterman

Affiliation Department of Epidemiology and Public Health, Yale University, New Haven, Connecticut, United States of America

Sharon Sand

Affiliation Division of Clinical Cancer Genetics, City of Hope, Duarte, California, United States of America

Lee P. Shulman

Affiliation Division of Clinical Genetics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America

Competing Interests

The authors have read the journal’s policy and Dr. Weidhaas has the following conflicts: She has patented the KRAS-variant through Yale University. This patent covers the discovery of the KRAS-variant and testing the KRAS-variant that is discussed in this application. This marker has been licensed to a company that she has co-founded. Dr. Weidhaas is not employed by this company, but is a consultant. The company has developed the KRAS-variant as a test. The Irish cohort was supported partially from a commercial source, the Galway Biobank. These things do not alter the authors’ adherence to all the PLoS ONE policies on sharing data and materials. The rest of the authors have no conflicts.

Author Contributions

Conceived and designed the experiments: RP JBW JW LS. Performed the experiments: TM JD HH NM MH SS. Analyzed the data: DP DZ. Contributed reagents/materials/analysis tools: RP JW MK XW LS MM. Wrote the paper: RP DP JW TM JD HH NM JBW MK MM XW MH DZ SS LS.