In multiple cancer types, high tumor mutational burden (TMB) is associated with longer survival after treatment with immune checkpoint inhibitors (ICIs). The association of TMB with survival outside of the immunotherapy context is poorly understood. We analyzed 10,233 patients (80% non-ICI-treated, 20% ICI-treated) with 17 cancer types before/without ICI treatment or after ICI treatment. In non-ICI-treated patients, higher TMB (higher percentile within cancer type) was not associated with better prognosis; in fact, in many cancer types, higher TMB was associated with poorer survival, in contrast to ICI-treated patients in whom higher TMB was associated with longer survival.
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All data needed to replicate the analyses in this study, including de-identified clinical data, TMB values, MSI status and DNA damage repair gene mutations have been deposited with Zenodo (https://doi.org/10.5281/zenodo.4074184; https://zenodo.org/record/4074184#.X5G-I-i6M2w). The data can also be accessed and analyzed online with the IOExplorer data portal (https://ioexplorer.net/valero).The original sequencing reads cannot be publicly deposited due to privacy restrictions since sequencing was performed as part of clinical care.
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We thank our patients and their families for their bravery and their support of cancer research. We thank members of the Molecular Diagnostics Service in the Department of Pathology and the Marie-Josée and Henry R. Kravis Center for Molecular Oncology and members of the Morris and Chan Laboratories for helpful discussions. We thank J. Novak for editing the manuscript. This study was funded by Fundación Alfonso Martín Escudero (to C.V.), National Institutes of Health (NIH) grant nos. K08 DE024774 and R01 DE027738, the Jayme and Peter Flowers Fund, Sebastian Nativo Fund, Catherine and Frederick Adler Chair for Junior Faculty and Cycle for Survival (to L.G.T.M.), Pershing Square Sohn Cancer Research Foundation, PaineWebber Chair, Stand Up To Cancer, Starr Cancer Consortium, NIH grant nos. R01 CA205426 and R35 CA232097 (to T.A.C.) and NIH/National Cancer Institute Cancer Center Support Grant no. P30 CA008748.
D.H. receives funding from AstraZeneca. M.A.P. reports consulting fees from BMS, Merck, Array BioPharma, Novartis, Incyte, NewLink Genetics and Aduro, honoraria from BMS and Merck and research support from Rgenix, Infinity, BMS, Merck, Array BioPharma, Novartis and AstraZeneca. A.N.S. reports advisory board positions with BMS, Immunocore and Castle Biosciences and institutional research support from BMS, Immunocore and Xcovery. V.P.B. is a recipient of an immuno-oncology translational research grant from Bristol Myers Squibb and is an inventor on a patent application related to work on neoantigen modeling. J.J.S. has received travel support from Intuitive Surgical for fellow education and has served as a clinical advisor to Guardant Health. A.M.C. reports an advisory board position with SpringWorks Therapeutics. A.Z. reports honoraria from Illumina. N.R. reports research support from Pfizer and BMS and consulting fees from Repare Therapeutics, Mirati Therapeutics and Illumina. T.A.C. acknowledges grant funding from Bristol Myers Squibb, AstraZeneca, Illumina, Pfizer, AN2H and Eisai, has served as an advisor for Bristol Myers Squibb, Illumina, Eisai and AN2H, holds equity in AN2H and is a cofounder of Gritstone Oncology and holds equity in the company. L.G.T.M. reports laboratory research funding from Illumina and AstraZeneca. R.M.S., T.A.C. and L.G.T.M. are inventors on a patent held by the Memorial Sloan Kettering Cancer Center related to the use of TMB in cancer immunotherapy. The remaining authors declare no competing interests.
Peer review information Nature Genetics thanks Douglas Johnson, J. Jack Lee and the other, anonymous, reviewer(s) for their contribution to the peer review of this work. Peer reviewer reports are available.
Publisher’s note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Extended Data Fig. 1 Association between tumor mutational burden (TMB) and overall survival (OS) with and without immune checkpoint inhibitor (ICI) treatment in the entire cohort (10,233 patients analyzed).
The forest plots compare the hazard ratios for OS for patients with TMB-high versus TMB-low tumors (using top 20th percentile within cancer type as cutoff) for patients who never received ICI treatment or before receiving ICI (black), and after receiving ICI (red). Error bars represent the 95% confidence intervals (95% CI). Cox proportional hazards regression was used with overall survival as the endpoint. All the hypothesis tests were 2-sided. No adjustments for multiple comparisons were made. Abbreviations: NSCLC, Non–small cell lung cancer; CNS, central nervous system; SCLC, small cell lung cancer.
Abbreviations: TMB, Tumor mutational burden; ICI, immune checkpoint inhibitors.
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Valero, C., Lee, M., Hoen, D. et al. The association between tumor mutational burden and prognosis is dependent on treatment context. Nat Genet 53, 11–15 (2021). https://doi.org/10.1038/s41588-020-00752-4
Nature Reviews Clinical Oncology (2021)