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Author Fanidi, A.; Muller, D.C.; Yuan, J.-M.; Stevens, V.L.; Weinstein, S.J.; Albanes, D.; Prentice, R.; Thomsen, C.A.; Pettinger, M.; Cai, Q.; Blot, W.J.; Wu, J.; Arslan, A.A.; Zeleniuch-Jacquotte, A.; McCullough, M.L.; Le Marchand, L.; Wilkens, L.R.; Haiman, C.A.; Zhang, X.; Han, J.; Stampfer, M.J.; Smith-Warner, S.A.; Giovannucci, E.; Giles, G.G.; Hodge, A.M.; Severi, G.; Johansson, M.; Grankvist, K.; Langhammer, A.; Krokstad, S.; Naess, M.; Wang, R.; Gao, Y.-T.; Butler, L.M.; Koh, W.-P.; Shu, X.-O.; Xiang, Y.-B.; Li, H.; Zheng, W.; Lan, Q.; Visvanathan, K.; Bolton, J.H.; Ueland, P.M.; Midttun, O.; Ulvik, A.; Caporaso, N.E.; Purdue, M.; Ziegler, R.G.; Freedman, N.D.; Buring, J.E.; Lee, I.-M.; Sesso, H.D.; Gaziano, J.M.; Manjer, J.; Ericson, U.; Relton, C.; Brennan, P.; Johansson, M. url  doi
  Title Circulating Folate, Vitamin B6, and Methionine in Relation to Lung Cancer Risk in the Lung Cancer Cohort Consortium (LC3) Type Journal Article
  Year 2018 Publication Journal of the National Cancer Institute Abbreviated Journal J Natl Cancer Inst  
  Volume 110 Issue 1 Pages  
  Keywords Adult; Aged; Aged, 80 and over; Asia/epidemiology; Australia/epidemiology; Case-Control Studies; Cotinine/blood; Europe/epidemiology; Female; Folic Acid/*blood; Humans; Incidence; Lung Neoplasms/blood/*epidemiology; Male; Methionine/*blood; Middle Aged; Prospective Studies; Protective Factors; Risk Factors; Sex Factors; Smoking/blood/epidemiology; United States/epidemiology; Vitamin B 6/*blood  
  Abstract Background: Circulating concentrations of B vitamins and factors related to one-carbon metabolism have been found to be strongly inversely associated with lung cancer risk in the European Prospective Investigation into Cancer and Nutrition (EPIC) study. The extent to which these associations are present in other study populations is unknown. Methods: Within 20 prospective cohorts from the National Cancer Institute Cohort Consortium, a nested case-control study was designed including 5364 incident lung cancer case patients and 5364 control subjects who were individually matched to case patients by age, sex, cohort, and smoking status. Centralized biochemical analyses were performed to measure circulating concentrations of vitamin B6, folate, and methionine, as well as cotinine as an indicator of recent tobacco exposure. The association between these biomarkers and lung cancer risk was evaluated using conditional logistic regression models. Results: Participants with higher circulating concentrations of vitamin B6 and folate had a modestly decreased risk of lung cancer risk overall, the odds ratios when comparing the top and bottom fourths (OR 4vs1 ) being 0.88 (95% confidence interval [CI] = 0.78 to 1.00) and 0.86 (95% CI = 0.74 to 0.99), respectively. We found stronger associations among men (vitamin B6: OR 4vs1 = 0.74, 95% CI = 0.62 to 0.89; folate: OR 4vs1 = 0.75, 95% CI = 0.61 to 0.93) and ever smokers (vitamin B6: OR 4vs1 = 0.78, 95% CI = 0.67 to 0.91; folate: OR 4vs1 = 0.87, 95% CI = 0.73 to 1.03). We further noted that the association of folate was restricted to Europe/Australia and Asia, whereas no clear association was observed for the United States. Circulating concentrations of methionine were not associated with lung cancer risk overall or in important subgroups. Conclusions: Although confounding by tobacco exposure or reverse causation cannot be ruled out, these study results are compatible with a small decrease in lung cancer risk in ever smokers who avoid low concentrations of circulating folate and vitamin B6.  
  Address Genetic Epidemiology Group, International Agency for Research on Cancer, Lyon, France; Department of Epidemiology and Biostatistics, Imperial College London, London, UK; Division of Cancer Control and Population Sciences, University of Pittsburgh Cancer Institute, Pittsburgh, PA; Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA; Epidemiology Research Program, American Cancer Society, Inc., Atlanta, GA; Division of Cancer Epidemiology and Genetics and Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD; Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA; Health Promotion Sciences, Mel and Enid Zuckerman College of Public Health, University of Arizona, Tucson, AZ; Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN; International Epidemiology Institute, Rockville, MD; Departments of Obstetrics and Gynecology, Population Health and Environmental Medicine and Population Health, New York University School of Medicine, New York, NY; Epidemiology Program, Cancer Research Center of Hawaii, University of Hawaii, Honolulu, HI; Channing Division of Network Medicine, Division of Preventive Medicine, and Division of Aging, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA; Department of Epidemiology and Department of Nutrition, Harvard T. H. Chan School of Public Health, Boston, MA; Cancer Epidemiology Centre, Cancer Council Victoria, Melbourne, Australia; Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Victoria, Australia; Molecular end Epidemiology Unit, HuGeF, Human Genetics Foundation, Torino, Italy; Inserm (Institut National de la Sante et de la Recherche Medicale), Centre for Research in Epidemiology and Population Health, Villejuif, France; Umea, University, Umea, Sweden; HUNT Research Centre, Department of Public Health and General Practice, NTNU, Norwegian University of Science and Technology, Levanger, Norway; Department of Epidemiology, Shanghai Cancer Institute, Shanghai Jiaotong University, Shanghai, China; Duke-NUS Graduate Medical School Singapore, Singapore; Department of Epidemiology, George W Comstock Center for Public Health Research and Prevention Health Monitoring Unit, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD; Laboratory of Clinical Biochemistry, Department of Clinical Science, University of Bergen, Bergen, Norway; Haukeland University Hospital, Bergen, Norway; Bevital AS, Bergen, Norway; Boston VA Medical Center, Boston, MA; Department of Surgery, Skane University Hospital Malmo, Lund University, Malmo, Sweden; Department of Clinical Sciences, Malmo, Lund University, Lund, Sweden; Institute of Genetic Medicine, Newcastle University, Newcastle, UK; MRC Integrative Epidemiology Unit, School of Social and Community Medicine, University of Bristol, Bristol, UK  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0027-8874 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:28922778; PMCID:PMC5989622 Approved no  
  Call Number HUNT @ maria.stuifbergen @ Serial 2081  
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Author Theofylaktopoulou, D.; Midttun, O.; Ueland, P.M.; Meyer, K.; Fanidi, A.; Zheng, W.; Shu, X.-O.; Xiang, Y.-B.; Prentice, R.; Pettinger, M.; Thomson, C.A.; Giles, G.G.; Hodge, A.; Cai, Q.; Blot, W.J.; Wu, J.; Johansson, M.; Hultdin, J.; Grankvist, K.; Stevens, V.L.; McCullough, M.M.; Weinstein, S.J.; Albanes, D.; Ziegler, R.; Freedman, N.D.; Langhammer, A.; Hveem, K.; Naess, M.; Sesso, H.D.; Gaziano, J.M.; Buring, J.E.; Lee, I.-M.; Severi, G.; Zhang, X.; Stampfer, M.J.; Han, J.; Smith-Warner, S.A.; Zeleniuch-Jacquotte, A.; Le Marchand, L.; Yuan, J.-M.; Wang, R.; Butler, L.M.; Koh, W.-P.; Gao, Y.-T.; Rothman, N.; Ericson, U.; Sonestedt, E.; Visvanathan, K.; Jones, M.R.; Relton, C.; Brennan, P.; Johansson, M.; Ulvik, A. url  doi
  Title Impaired functional vitamin B6 status is associated with increased risk of lung cancer Type Journal Article
  Year 2018 Publication International Journal of Cancer Abbreviated Journal Int J Cancer  
  Volume 142 Issue 12 Pages 2425-2434  
  Keywords Aged; Biomarkers/blood; Carcinoma, Squamous Cell/*blood/*pathology; Case-Control Studies; Cohort Studies; Female; Humans; Lung Neoplasms/*blood/*pathology; Male; Middle Aged; Odds Ratio; Risk Factors; Vitamin B 6/*blood; *3-hydroxykynurenine:xanthurenic acid; *Lung Cancer Cohort Consortium; *functional vitamin B6 marker; *pyridoxal 5'-phosphate  
  Abstract Circulating vitamin B6 levels have been found to be inversely associated with lung cancer. Most studies have focused on the B6 form pyridoxal 5'-phosphate (PLP), a direct biomarker influenced by inflammation and other factors. Using a functional B6 marker allows further investigation of the potential role of vitamin B6 status in the pathogenesis of lung cancer. We prospectively evaluated the association of the functional marker of vitamin B6 status, the 3-hydroxykynurenine:xanthurenic acid (HK:XA) ratio, with risk of lung cancer in a nested case-control study consisting of 5,364 matched case-control pairs from the Lung Cancer Cohort Consortium (LC3). We used conditional logistic regression to evaluate the association between HK:XA and lung cancer, and random effect models to combine results from different cohorts and regions. High levels of HK:XA, indicating impaired functional B6 status, were associated with an increased risk of lung cancer, the odds ratio comparing the fourth and the first quartiles (OR4thvs.1st ) was 1.25 (95% confidence interval, 1.10-1.41). Stratified analyses indicated that this association was primarily driven by cases diagnosed with squamous cell carcinoma. Notably, the risk associated with HK:XA was approximately 50% higher in groups with a high relative frequency of squamous cell carcinoma, i.e., men, former and current smokers. This risk of squamous cell carcinoma was present in both men and women regardless of smoking status.  
  Address Bevital AS, Bergen, Norway  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0020-7136 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:29238985; PMCID:PMC5908731 Approved no  
  Call Number HUNT @ maria.stuifbergen @ Serial 2182  
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