Abstract
Fluoropyrimidine (FDP) chemotherapy regimens used in the treatment of solid tumors such as breast, gastrointestinal, and hepatobiliary malignancies have led to significant survival benefits. However, FDP cardiotoxicity can lead to premature termination of FDP-based chemotherapy treatments. Resuming these crucial therapies after initial FDP cardiotoxicity can be challenging for patients and healthcare providers. Symptomatic cardiotoxicity occurs in up to 35% of patients treated with FDP-based chemotherapy. The most common symptom is chest pain, but palpitations, dyspnea, myocardial infarction, cardiogenic shock, and cardiac arrest can also occur. Several large studies have attempted to discern clinical and genetic risk factors in those who develop FDP cardiotoxicity. With cardiac risk factor optimization and aggressive pre-treatment with anti-anginal agents, rechallenging with FDP is possible and allows patients to resume optimal cancer-directed treatment. FDP cardiotoxicity remains a poorly understood identity. We highlight several recent publications attempting to define the risk factors associated with developing FDP cardiotoxicity. The management of FDP cardiotoxicity and consideration of rechallenge of FDP-based regimens highlights the importance of a multidisciplinary partnership between oncologists and cardiologists/cardio-oncologists.
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