Increased Cardiac Risk After a Second Malignant Neoplasm Among Childhood Cancer Survivors: A FCCSS Study.

Area of Science:

• Oncology
• Cardiology
• Epidemiology

Background:

• Childhood cancer survivors (CCS) have increased risks for second malignant neoplasms (SMN) and cardiac disease.
• Understanding the interplay between SMN and cardiac disease in CCS is crucial for long-term survivorship care.

Purpose of the Study:

• To evaluate the excess occurrence of cardiac disease following a SMN in childhood cancer survivors.
• To quantify the association between SMN and the risk of developing cardiac disease.

Main Methods:

• Analysis of 7,670 CCS from the French Childhood Cancer Survivors Study cohort (diagnosed 1945-2000).
• Utilized a landmark approach and additive regression models for cumulative cardiac disease incidence.
• Employed proportional cause-specific hazard models with SMN as a time-dependent exposure, adjusting for covariates and considering death as a competing event.

Main Results:

• Over 30 years median follow-up, 378 cardiac diseases and 49 SMNs were identified among CCS.
• Survivors diagnosed 25 years prior with a SMN showed a 3.8% higher cumulative incidence of cardiac disease.
• SMNs were associated with a 2-fold increased risk (HR: 2.0) of cardiac disease, indicating a significant link.

Conclusions:

• The occurrence of a second malignant neoplasm in childhood cancer survivors is linked to a higher risk of cardiac disease.
• This association suggests an increased susceptibility to cardiac issues at younger ages for CCS who develop subsequent cancers.