RT Journal Article T1 Vitamin D-Related Genes, Blood Vitamin D Levels and Colorectal Cancer Risk in Western European Populations. A1 Fedirko, Veronika A1 Mandle, Hannah B A1 Zhu, Wanzhe A1 Hughes, David J A1 Siddiq, Afshan A1 Ferrari, Pietro A1 Romieu, Isabelle A1 Riboli, Elio A1 Bueno-de-Mesquita, Bas A1 van Duijnhoven, Fränzel J B A1 Siersema, Peter D A1 Tjønneland, Anne A1 Olsen, Anja A1 Perduca, Vittorio A1 Carbonnel, Franck A1 Boutron-Ruault, Marie-Christine A1 Kühn, Tilman A1 Johnson, Theron A1 Krasimira, Aleksandrova A1 Trichopoulou, Antonia A1 Makrythanasis, Periklis A1 Thanos, Dimitris A1 Panico, Salvatore A1 Krogh, Vittorio A1 Sacerdote, Carlotta A1 Skeie, Guri A1 Weiderpass, Elisabete A1 Colorado-Yohar, Sandra A1 Sala, Núria A1 Barricarte, Aurelio A1 Sanchez-Perez, Maria-Jose A1 Quirós, Ramón A1 Amiano, Pilar A1 Gylling, Björn A1 Harlid, Sophia A1 Perez-Cornago, Aurora A1 Heath, Alicia K A1 Tsilidis, Konstantinos K A1 Aune, Dagfinn A1 Freisling, Heinz A1 Murphy, Neil A1 Gunter, Marc J A1 Jenab, Mazda K1 colorectal neoplasms K1 incidence K1 single nucleotide polymorphism (SNP) K1 vitamin D AB Higher circulating 25-hydroxyvitamin D levels (25(OH)D) have been found to be associated with lower risk for colorectal cancer (CRC) in prospective studies. Whether this association is modified by genetic variation in genes related to vitamin D metabolism and action has not been well studied in humans. We investigated 1307 functional and tagging single-nucleotide polymorphisms (SNPs; individually, and by gene/pathway) in 86 vitamin D-related genes in 1420 incident CRC cases matched to controls from the European Prospective Investigation into Cancer and Nutrition (EPIC) cohort. We also evaluated the association between these SNPs and circulating 25(OH)D in a subset of controls. We confirmed previously reported CRC risk associations between SNPs in the VDR, GC, and CYP27B1 genes. We also identified additional associations with 25(OH)D, as well as CRC risk, and several potentially novel SNPs in genes related to vitamin D transport and action (LRP2, CUBN, NCOA7, and HDAC9). However, none of these SNPs were statistically significant after Benjamini-Hochberg (BH) multiple testing correction. When assessed by a priori defined functional pathways, tumor growth factor β (TGFβ) signaling was associated with CRC risk (P ≤ 0.001), with most statistically significant genes being SMAD7 (PBH = 0.008) and SMAD3 (PBH = 0.008), and 18 SNPs in the vitamin D receptor (VDR) binding sites (P = 0.036). The 25(OH)D-gene pathway analysis suggested that genetic variants in the genes related to VDR complex formation and transcriptional activity are associated with CRC depending on 25(OH)D levels (interaction P = 0.041). Additional studies in large populations and consortia, especially with measured circulating 25(OH)D, are needed to confirm our findings. PB MDPI AG YR 2019 FD 2019-08-12 LK http://hdl.handle.net/10668/14423 UL http://hdl.handle.net/10668/14423 LA en NO Fedirko V, Mandle HB, Zhu W, Hughes DJ, Siddiq A, Ferrari P, el al. Vitamin D-Related Genes, Blood Vitamin D Levels and Colorectal Cancer Risk in Western European Populations. Nutrients. 2019 Aug 20;11(8):1954. NO Funding for this particular study was obtained from Wereld Kanker Onderzoek Fonds (WKOF) [Grant Number WCRF 2011-443; PI: M. Jenab], as part of the World Cancer Research Fund International grant programme. The EPIC study was supported by “Europe Against Cancer” Programme of the European Commission (SANCO); Ligue contre le Cancer; Institut Gustave Roussy; Mutuelle Générale de l’Education Nationale; Institut National de la Santé et de la Recherche Médicale (INSERM); German Cancer Aid; German Cancer Research Center; German Federal Ministry of Education and Research; Danish Cancer Society; Health Research Fund (FIS) of the Spanish Ministry of Health; the CIBER en Epidemiología y Salud Pública (CIBERESP), Spain; ISCIII RETIC (RD06/0020); Spanish Regional Governments of Andalusia, Asturias, Basque Country, Murcia (No 6236) and Navarra and the Catalan Institute of Oncology; Cancer Research UK; Medical Research Council, UK; The Hellenic Health Foundation; Italian Association for Research on Cancer; Italian National Research Council; Compagnia di San Paolo; Dutch Ministry of Public Health, Welfare and Sports (VWS), Netherlands Cancer Registry (NKR), LK Research Funds, Dutch Prevention Funds, Dutch ZON (Zorg Onderzoek Nederland), World Cancer Research Fund (WCRF), Statistics Netherlands (The Netherlands); Swedish Cancer Society; Swedish Scientific Council; Regional Governments of Skane and Vasterbotten, Sweden; and Nordforsk centre of excellence programme HELGA. Cancer Research UK (14136 to EPIC-Norfolk; C570/A16491 for EPIC-Oxford), Medical Research Council (1000143 to EPIC-Norfolk, MR/M012190/1 to EPIC-Oxford) (UK). DJH was supported by the Health Research Board of Ireland health research award HRA-PHS-2015-1142. DS RISalud RD Apr 10, 2025