What question did this study set out to answer?

The study aims to investigate how age influences the evolution of melanoma by altering mutation rates and the strength of selection on driver mutations.

April 4, 2026Cancer Research

Modeling Age-Dependent Selection on Melanoma Driver Mutations

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Authors

YLYihan LiuCapital Medical University MRMoein RajaeiYale University JMJeffrey D. MandellYale University

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Implication

This analysis uses a novel modeling framework to explore mutation impact on melanoma across different ages, suggesting tailored prevention strategies.

Key Points

The study aims to investigate how age influences the evolution of melanoma by altering mutation rates and the strength of selection on driver mutations.
Developed a continuous age-selection modeling framework based on large-scale sequencing data.
Analyzed whole-exome and targeted-panel data from 5,472 melanoma cases.
Modeled selection on variants using linear, logistic, and generalized sigmoid forms.
Used likelihood-ratio tests to evaluate model fits and adaptive Metropolis-Hastings sampling for uncertainty estimation.
Neutral mutation rates increased slightly with age, with UV-associated signatures dominating across all age groups.
BRAF V600E selection declined with age while NRAS Q61 had increased selection in older patients.
TERT-promoter mutations became more frequent but conferred weaker selective advantages as patients aged.
Gene-level analyses showed declines in selection for TP53, PTEN, and CDKN2A, indicating lower oncogenicity in late-life tumors.

Cite This Study

Liu et al. (2026) studied this question.

synapsesocial.com/papers/69d0b028659487ece0fa631f https://doi.org/10.1158/1538-7445.am2026-10

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Implication

This analysis uses a novel modeling framework to explore mutation impact on melanoma across different ages, suggesting tailored prevention strategies.

Modeling Age-Dependent Selection on Melanoma Driver Mutations

Discussion

Member takes

Implication

Key Points

Cite This Study

Modeling Age-Dependent Selection on Melanoma Driver Mutations

Discussion

Member takes

Implication

Key Points

Cite This Study

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