TY - JOUR
T1 - Mitochondrial DNA copy number variation and pancreatic cancer risk in the prospective EPIC cohort
AU - Gentiluomo, Manuel
AU - Katzke, Verena A
AU - Kaaks, Rudolf
AU - Tjonneland, Anne
AU - Severi, Gianluca
AU - Perduca, Vittorio
AU - Boutron-Ruault, Marie-Christine
AU - Weiderpass, Elisabete
AU - Ferrari, Pietro
AU - Johnson, Theron
AU - Schulze, Matthias B
AU - Bergmann, Manuela
AU - Trichopoulou, Antonia
AU - Karakatsani, Anna
AU - La Vecchia, Carlo
AU - Palli, Domenico
AU - Grioni, Sara
AU - Panico, Salvatore
AU - Tumino, Rosario
AU - Sacerdote, Carlotta
AU - Bueno-de-Mesquita, Bas
AU - Vermeulen, Roel
AU - Sandanger, Torkjel M
AU - Quirós, J Ramón
AU - Rodríguez-Barranco, Miguel
AU - Amiano, Pilar
AU - Colorado-Yohar, Sandra
AU - Ardanaz, Eva
AU - Sund, Malin
AU - Khaw, Kay-Tee
AU - Wareham, Nicholas J
AU - Schmidt, Julie A
AU - Jakszyn, Paula
AU - Morelli, Luca
AU - Canzian, Federico
AU - Campa, Daniele
N1 - Copyright ©2020, American Association for Cancer Research.
PY - 2020/3
Y1 - 2020/3
N2 - BACKGROUND: Mitochondrial DNA (mtDNA) copy number in peripheral blood has been found to be associated with risk of developing several cancers. However, data on pancreatic ductal adenocarcinoma (PDAC) are very limited.METHODS: To further our knowledge on this topic we measured relative mtDNA copy number by a quantitative real-time PCR assay in peripheral leukocyte samples of 476 PDAC cases and 357 controls nested within the European Prospective Investigation into Cancer and Nutrition (EPIC) cohort.RESULTS: We observed lower mtDNA copy number with advancing age (p=6.54×10-5) and with a high BMI level (p=0.004) and no association with sex, smoking behavior and alcohol consumption. We found an association between increased mtDNA copy number and decreased risk of developing PDAC with an OR=0.35 (95% C.I 0.16-0.79), p=0.01 when comparing the 5th quintile with the 1st using an unconditional logistic regression and OR=0.19 (95% C.I 0.07-0.52), p=0.001 with a conditional analysis. Analyses stratified by BMI showed an association between high mtDNA copy number and decreased risk in the stratum of normal weight, consistent with the main analyses.CONCLUSIONS: Our results, suggest a protective effect of a higher number of mitochondria, measured in peripheral blood leukocytes, on PDAC risk.IMPACT: Our findings highlight the importance of understanding the mitochondrial biology in pancreatic cancer.
AB - BACKGROUND: Mitochondrial DNA (mtDNA) copy number in peripheral blood has been found to be associated with risk of developing several cancers. However, data on pancreatic ductal adenocarcinoma (PDAC) are very limited.METHODS: To further our knowledge on this topic we measured relative mtDNA copy number by a quantitative real-time PCR assay in peripheral leukocyte samples of 476 PDAC cases and 357 controls nested within the European Prospective Investigation into Cancer and Nutrition (EPIC) cohort.RESULTS: We observed lower mtDNA copy number with advancing age (p=6.54×10-5) and with a high BMI level (p=0.004) and no association with sex, smoking behavior and alcohol consumption. We found an association between increased mtDNA copy number and decreased risk of developing PDAC with an OR=0.35 (95% C.I 0.16-0.79), p=0.01 when comparing the 5th quintile with the 1st using an unconditional logistic regression and OR=0.19 (95% C.I 0.07-0.52), p=0.001 with a conditional analysis. Analyses stratified by BMI showed an association between high mtDNA copy number and decreased risk in the stratum of normal weight, consistent with the main analyses.CONCLUSIONS: Our results, suggest a protective effect of a higher number of mitochondria, measured in peripheral blood leukocytes, on PDAC risk.IMPACT: Our findings highlight the importance of understanding the mitochondrial biology in pancreatic cancer.
U2 - 10.1158/1055-9965.EPI-19-0868
DO - 10.1158/1055-9965.EPI-19-0868
M3 - Article
C2 - 31932413
SN - 1055-9965
VL - 29
SP - 681
EP - 686
JO - Cancer Epidemiology Biomarkers and Prevention
JF - Cancer Epidemiology Biomarkers and Prevention
IS - 3
ER -