Genetic Susceptibility to Nonalcoholic Fatty Liver Disease and Risk for Pancreatic Cancer: Mendelian Randomization
- PMID: 37351909
- PMCID: PMC10529823
- DOI: 10.1158/1055-9965.EPI-23-0453
Genetic Susceptibility to Nonalcoholic Fatty Liver Disease and Risk for Pancreatic Cancer: Mendelian Randomization
Abstract
Background: There are conflicting data on whether nonalcoholic fatty liver disease (NAFLD) is associated with susceptibility to pancreatic cancer. Using Mendelian randomization (MR), we investigated the relationship between genetic predisposition to NAFLD and risk for pancreatic cancer.
Methods: Data from genome-wide association studies (GWAS) within the Pancreatic Cancer Cohort Consortium (PanScan; cases n = 5,090, controls n = 8,733) and the Pancreatic Cancer Case Control Consortium (PanC4; cases n = 4,163, controls n = 3,792) were analyzed. We used data on 68 genetic variants with four different MR methods [inverse variance weighting (IVW), MR-Egger, simple median, and penalized weighted median] separately to predict genetic heritability of NAFLD. We then assessed the relationship between each of the four MR methods and pancreatic cancer risk, using logistic regression to calculate ORs and 95% confidence intervals (CI), adjusting for PC risk factors, including obesity and diabetes.
Results: No association was found between genetically predicted NAFLD and pancreatic cancer risk in the PanScan or PanC4 samples [e.g., PanScan, IVW OR, 1.04; 95% confidence interval (CI), 0.88-1.22; MR-Egger OR, 0.89; 95% CI, 0.65-1.21; PanC4, IVW OR, 1.07; 95% CI, 0.90-1.27; MR-Egger OR, 0.93; 95% CI, 0.67-1.28]. None of the four MR methods indicated an association between genetically predicted NAFLD and pancreatic cancer risk in either sample.
Conclusions: Genetic predisposition to NAFLD is not associated with pancreatic cancer risk.
Impact: Given the close relationship between NAFLD and metabolic conditions, it is plausible that any association between NAFLD and pancreatic cancer might reflect host metabolic perturbations (e.g., obesity, diabetes, or metabolic syndrome) and does not necessarily reflect a causal relationship between NAFLD and pancreatic cancer.
©2023 American Association for Cancer Research.
Conflict of interest statement
Figures
References
Publication types
MeSH terms
Grants and funding
- P50 CA062924/CA/NCI NIH HHS/United States
- R01 HL043851/HL/NHLBI NIH HHS/United States
- UG1 CA189974/CA/NCI NIH HHS/United States
- L30 CA209733/CA/NCI NIH HHS/United States
- R01 CA047988/CA/NCI NIH HHS/United States
- R01 HL080467/HL/NHLBI NIH HHS/United States
- RC1 HL099355/HL/NHLBI NIH HHS/United States
- 001/WHO_/World Health Organization/International
- U01 CA247283/CA/NCI NIH HHS/United States
- P30 CA008748/CA/NCI NIH HHS/United States
- U01 CA167551/CA/NCI NIH HHS/United States
- P30 CA015083/CA/NCI NIH HHS/United States
- UM1 CA182913/CA/NCI NIH HHS/United States
- R01 CA154823/CA/NCI NIH HHS/United States
- K01 CA237875/CA/NCI NIH HHS/United States
- U01 CA074783/CA/NCI NIH HHS/United States
- U01 CA182913/CA/NCI NIH HHS/United States
