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Mendelian randomization analysis rules out disylipidaemia as colorectal cancer cause.
- Source :
-
Scientific reports [Sci Rep] 2019 Sep 16; Vol. 9 (1), pp. 13407. Date of Electronic Publication: 2019 Sep 16. - Publication Year :
- 2019
-
Abstract
- Dyslipidemia and statin use have been associated with colorectal cancer (CRC), but prospective studies have shown mixed results. We aimed to determine whether dyslipidemia is causally linked to CRC risk using a Mendelian randomization approach and to explore the association of statins with CRC. A case-control study was performed including 1336 CRC cases and 2744 controls (MCC-Spain). Subjects were administered an epidemiological questionnaire and were genotyped with an array which included polymorphisms associated with blood lipids levels, selected to avoid pleiotropy. Four genetic lipid scores specific for triglycerides (TG), high density lipoprotein cholesterol (HDL), low density lipoprotein cholesterol (LDL), or total cholesterol (TC) were created as the count of risk alleles. The genetic lipid scores were not associated with CRC. The ORs per 10 risk alleles, were for TG 0.91 (95%CI: 0.72-1.16, p = 0.44), for HDL 1.14 (95%CI: 0.95-1.37, p = 0.16), for LDL 0.97 (95%CI: 0.81-1.16, p = 0.73), and for TC 0.98 (95%CI: 0.84-1.17, p = 0.88). The LDL and TC genetic risk scores were associated with statin use, but not the HDL or TG. Statin use, overall, was a non-significant protective factor for CRC (OR 0.84; 95%CI: 0.70-1.01, p = 0.060), but lipophilic statins were associated with a CRC risk reduction (OR 0.78; 95%CI 0.66-0.96, p = 0.018). Using the Mendelian randomization approach, our study does not support the hypothesis that lipid levels are associated with the risk of CRC. This study does not rule out, however, a possible protective effect of statins in CRC by a mechanism unrelated to lipid levels.
- Subjects :
- Adult
Aged
Aged, 80 and over
Case-Control Studies
Colorectal Neoplasms genetics
Colorectal Neoplasms pathology
Female
Follow-Up Studies
Genetic Predisposition to Disease
Genome-Wide Association Study
Humans
Incidence
Male
Middle Aged
Prognosis
Risk Factors
Spain epidemiology
Young Adult
Colorectal Neoplasms epidemiology
Dyslipidemias physiopathology
Lipids analysis
Mendelian Randomization Analysis
Polymorphism, Single Nucleotide
Subjects
Details
- Language :
- English
- ISSN :
- 2045-2322
- Volume :
- 9
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Scientific reports
- Publication Type :
- Academic Journal
- Accession number :
- 31527690
- Full Text :
- https://doi.org/10.1038/s41598-019-49880-w