A study by St. Jude Children's Research Hospital reveals genetic predisposition and prior cancer treatments jointly influence secondary cancer risk in childhood cancer survivors.
Published in The Lancet Oncology, the research analyzes data from over 10,000 survivors, showcasing the impact of therapy exposures and genetic factors on secondary cancer development.
Radiation emerges as the most significant contributor to second cancer risk, responsible for over 40% of the total burden, prompting efforts to minimize radiation doses in treatment.
Chemotherapy's role varies by cancer subtype, contributing between 8% and 35% to subsequent malignancies, reflecting different mutagenic mechanisms.
Genetic factors, assessed through polygenic risk scoring, account for 5% to 37% of secondary cancer risk, challenging previous beliefs about their impact.
The study emphasizes personalized survivorship management using genetic risk profiling to tailor surveillance and preventive strategies, potentially improving early detection of secondary cancers.
Lifestyle factors like diet and physical activity minimally influence second cancer risk in the studied cohort, underlining the importance of genetic and treatment histories in survivorship care.
The research drives a shift towards combining genetic predisposition with treatment history for nuanced risk assessment, enhancing patient monitoring and resource allocation in clinical practice.
Empowering survivors with personalized risk profiles fosters proactive healthcare engagement and aligns with patient-centered care principles, promoting shared decision-making.
Interdisciplinary collaboration and advanced statistical analyses underpin this study, highlighting the value of integrating diverse data sources in understanding complex health outcomes.
Supported by National Cancer Institute grants and philanthropic contributions, this research signifies an essential advancement in precision medicine for survivorship care in childhood cancer.