Clinical impact of UV mutational signatures in Veterans with cancer
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View abstract on PubMed
Summary
This summary is machine-generated.Identifying the UV-related DNA damage signature (UVsig) in cancers can change diagnosis and treatment. This knowledge could lead to more effective, less toxic therapies for patients with unknown primary or extracutaneous cancers.
Area Of Science
- Oncology
- Genetics
- Cancer Research
Background
- The UV-related DNA damage signature (UVsig) is a specific marker for cutaneous cancers.
- Previous findings suggest UVsig in non-cutaneous tumors may indicate misclassification.
- This study investigates the impact of UVsig knowledge on initial cancer treatment decisions.
Purpose Of The Study
- To determine if identifying the UV-related DNA damage signature (UVsig) at diagnosis influences first-line treatment recommendations for cancers.
- To assess the potential clinical impact (PCI) of UVsig on cancer diagnosis and therapy.
Main Methods
- Defined potential clinical impact (PCI) based on changes in diagnosis and therapy due to UVsig.
- Categorized PCI into high (diagnosis and therapy change), medium (diagnosis change, appropriate therapy), and low (diagnosis modified, treated as cutaneous).
- Analyzed UVsig prevalence and PCI in cancers of unknown primary and extracutaneous origin.
Main Results
- UVsig was detected in 12% (650/5565) of cases.
- In unknown primary cancers, 49% had high PCI, 22% medium, and 29% low.
- In extracutaneous cancers, 54% had high PCI, 36% medium, and 10% low.
- Diagnosis would change in 14% of UVsig-positive Veterans.
- 88% of high PCI cases received unnecessary chemotherapy.
Conclusions
- UVsig knowledge can revise clinical diagnosis and significantly alter first-line treatment for at least half of unknown primary or extracutaneous cancers.
- Incorporating UVsig information may enable more effective and less toxic cancer therapies.
- This highlights the importance of molecular signatures in guiding cancer care.
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