Genome-wide Association Study of Bladder Cancer Reveals New Biological and Translational Insights
- PMID: 37210288
- PMCID: PMC10330197
- DOI: 10.1016/j.eururo.2023.04.020
Genome-wide Association Study of Bladder Cancer Reveals New Biological and Translational Insights
Abstract
Background: Genomic regions identified by genome-wide association studies (GWAS) for bladder cancer risk provide new insights into etiology.
Objective: To identify new susceptibility variants for bladder cancer in a meta-analysis of new and existing genome-wide genotype data.
Design, setting, and participants: Data from 32 studies that includes 13,790 bladder cancer cases and 343,502 controls of European ancestry were used for meta-analysis.
Outcome measurements and statistical analyses: Log-additive associations of genetic variants were assessed using logistic regression models. A fixed-effects model was used for meta-analysis of the results. Stratified analyses were conducted to evaluate effect modification by sex and smoking status. A polygenic risk score (PRS) was generated on the basis of known and novel susceptibility variants and tested for interaction with smoking.
Results and limitations: Multiple novel bladder cancer susceptibility loci (6p.22.3, 7q36.3, 8q21.13, 9p21.3, 10q22.1, 19q13.33) as well as improved signals in three known regions (4p16.3, 5p15.33, 11p15.5) were identified, bringing the number of independent markers at genome-wide significance (p < 5 × 10-8) to 24. The 4p16.3 (FGFR3/TACC3) locus was associated with a stronger risk for women than for men (p-interaction = 0.002). Bladder cancer risk was increased by interactions between smoking status and genetic variants at 8p22 (NAT2; multiplicative p value for interaction [pM-I] = 0.004), 8q21.13 (PAG1; pM-I = 0.01), and 9p21.3 (LOC107987026/MTAP/CDKN2A; pM-I = 0.02). The PRS based on the 24 independent GWAS markers (odds ratio per standard deviation increase 1.49, 95% confidence interval 1.44-1.53), which also showed comparable results in two prospective cohorts (UK Biobank, PLCO trial), revealed an approximately fourfold difference in the lifetime risk of bladder cancer according to the PRS (e.g., 1st vs 10th decile) for both smokers and nonsmokers.
Conclusions: We report novel loci associated with risk of bladder cancer that provide clues to its biological underpinnings. Using 24 independent markers, we constructed a PRS to stratify lifetime risk. The PRS combined with smoking history, and other established risk factors, has the potential to inform future screening efforts for bladder cancer.
Patient summary: We identified new genetic markers that provide biological insights into the genetic causes of bladder cancer. These genetic risk factors combined with lifestyle risk factors, such as smoking, may inform future preventive and screening strategies for bladder cancer.
Keywords: Bladder cancer; Gene-environment interaction; Genome-Wide Association Study (GWAS); Germline genetics.
Published by Elsevier B.V.
Conflict of interest statement
Figures


Comment in
-
Understanding bladder cancer by genome-wide association studies.Transl Androl Urol. 2024 Feb 29;13(2):363-365. doi: 10.21037/tau-23-507. Epub 2024 Feb 20. Transl Androl Urol. 2024. PMID: 38481859 Free PMC article. No abstract available.
References
-
- Rafnar T, Sulem P, Thorleifsson G, et al. Genome-wide association study yields variants at 20p12.2 that associate with urinary bladder cancer. Hum Mol Genet 2014;23:5545–57. - PubMed
Publication types
MeSH terms
Substances
Grants and funding
- 75N92021D00002/HL/NHLBI NIH HHS/United States
- 75N92021D00005/WH/WHI NIH HHS/United States
- Z01 CP010187/ImNIH/Intramural NIH HHS/United States
- 29186/CRUK_/Cancer Research UK/United Kingdom
- R21 CA266660/CA/NCI NIH HHS/United States
- 75N92021D00001/HL/NHLBI NIH HHS/United States
- P30 CA008748/CA/NCI NIH HHS/United States
- P50 CA221745/CA/NCI NIH HHS/United States
- 75N92021D00003/WH/WHI NIH HHS/United States
- R01 CA256188/CA/NCI NIH HHS/United States
- Z99 CA999999/ImNIH/Intramural NIH HHS/United States
- 001/WHO_/World Health Organization/International
- 75N92021D00004/WH/WHI NIH HHS/United States
LinkOut - more resources
Full Text Sources
Medical
Molecular Biology Databases
Miscellaneous