Abstract
Background
Genetically predicted leukocyte telomere length (LTL) has been evaluated in several studies of childhood and adult cancer. We test whether genetically predicted longer LTL is associated with germ cell tumours (GCT) in children and adults.
Methods
Paediatric GCT samples were obtained from a Children’s Oncology Group study and state biobank programs in California and Michigan (N = 1413 cases, 1220 biological parents and 1022 unrelated controls). Replication analysis included 396 adult testicular GCTs (TGCT) and 1589 matched controls from the UK Biobank. Mendelian randomisation was used to look at the association between genetically predicted LTL and GCTs and TERT variants were evaluated within GCT subgroups.
Results
We identified significant associations between TERT variants reported in previous adult TGCT GWAS in paediatric GCT: TERT/rs2736100-C (OR = 0.82; P = 0.0003), TERT/rs2853677-G (OR = 0.80; P = 0.001), and TERT/rs7705526-A (OR = 0.81; P = 0.003). We also extended these findings to females and tumours outside the testes. In contrast, we did not observe strong evidence for an association between genetically predicted LTL by other variants and GCT risk in children or adults.
Conclusion
While TERT is a known susceptibility locus for GCT, our results suggest that LTL predicted by other variants is not strongly associated with risk in either children or adults.
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Data availability
The paediatric and adolescent datasets generated from the Children’s Oncology Group (COG) and used for analyses in the current study will be shared publicly on dbGaP. Data generated from the California and Michigan Biobank samples cannot be shared due to state-specific restrictions regarding the use of the data. The UK Biobank data is publicly available and can be accessed on the UK Biobank website (https://www.ukbiobank.ac.uk/).
Code availability
Representative code used to analyse the data in this study is provided in Supplemental Materials.
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Acknowledgements
The authors would like to acknowledge the University of Minnesota Genomics Center for performing the genotyping assays and the University of Minnesota Supercomputing Institute for providing hardware and support for the statistical analyses.
Funding
This work was supported by the National Institutes of Health (grant R01 CA151284 to Jenny N. Poynter, National Clinical Trials Network Operations Center grant U10CA180886, and National Clinical Trials Network Statistics and Data Management Center grant U10CA180899), and Epidemiology Award from Alex’s Lemonade Stand Foundation (Wynnewood, Pennsylvania), and the Children’s Cancer Research Fund (Minneapolis, Minnesota).
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SSC analysed and interpreted the data, conducted the literature review, and drafted the article. TY assisted with the interpretation of the data and power calculations. NP, JJM, ACK, JAL and BRC conceptualised the study design, processed the genetic data and assisted with data analysis. EKL and AJH conducted laboratory work and supervised the data collection. MK and ALF contributed to the study design. JNP designed the study, conceptualised the analysis and interpreted the data. All authors contributed to the drafting, review and approval of the final article.
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ALF has acted as a paid consultant for Decibel Therapeutics for work performed outside of the current study. The remaining authors declare no competing interests.
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All study procedures were approved by the University of Minnesota Institutional Review Board. The California Committee for the Protection of Human Subjects and the Michigan Department of Health and Human Services Institutional Review Board approved the use of the biobank samples.
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Supplementary information
41416_2022_1798_MOESM1_ESM.pdf
Supplemental Table S1. Individual effect of leukocyte telomere length (LTL) related variants on germ cell tumor risk (GCT)
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Supplemental Table S2. Sensitivity analysis for the MR analyses of genetically predicted telomere length on pediatric germ cell tumor
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Supplemental Figure S1. Mendelian Randomization (MR) analysis results for the association between individual SNPs that genetically predict leukocyte telomere length (LTL) and pediatric germ cell tumor
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Supplemental Figure S2. Mendelian Randomization (MR) analysis results for the association between individual SNPs that genetically predict leukocyte telomere length (LTL) and pediatric germ cell tumor
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Cigan, S.S., Meredith, J.J., Kelley, A.C. et al. Predicted leukocyte telomere length and risk of germ cell tumours. Br J Cancer 127, 301–312 (2022). https://doi.org/10.1038/s41416-022-01798-3
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DOI: https://doi.org/10.1038/s41416-022-01798-3