Abstract

Abstract Background Over the past 3 decades, there has been a significant increase in cancer survivors supported by the major advances in cancer therapies. However, most of those therapies are cardio-toxic. In 2022, the European Society of cardiology had published, for the first time, a clinical guideline that describes how to manage this cohort of patients, and endorsed the utilization of a risk calculator to predictor likelihood of development of cancer therapy cardiac dysfunction (CRTCD). We did retrospective review of all consecutive patients that have received Trstuzumab (HER-2 antagonist) in the year 2023 in a single tertiary cardiac center. We assessed their demographics and co-morbidities, incidence of CRTCD, evaluated their ICOS-HF score and looked for any CRTCD in this cohort to assess whether the calculated stratification correlated with development of CRTCD. The objective is to assess the utilization of this tool in our patient population. Methods 369 unique individuals were identified from the hospital databas that had received HER-2 antagonists. Basic patient demographics were extracted from the information system along with their clinical, laboratory, and echocardiographic data. Their risk profiles were stratified using the ICOS-HF calculator. Follow up echocardiogrphic studies were reviewed to assess the incidence of CRTCD in patients receiving HER-2 antagonists and the correlation between the risk strata using the ICOS-HF and actual development of CRTCD. Results The average age was 53+/- 11 years. 96.8% were females. At baseline, 20% were diabetic, 26.8% were hypertensive, 10.8% were dyslipidemic, 1.9% had prior cardiomyopathy or heart failure, 1.3% had IHD, 1.1% were smoker, 33.3% were obese, and 3.8% had CKD. Overall, in the year 2023, the incidence of HER-2 induced cardiac dysfunction was 10.6%. At baseline, using the ICOS-HF calculator, 57.9% were stratified as low risk, 21% as moderate risk 14.6% as high risk, and 6.5% as very high risk. Approximately 5% of the patients with low to moderate risk developed CRTCD, which rose to 18.5% in the high risk, and significantly rose to 58% in the very high risk population. Conclusion The risk stratification using the ICOS-HF calculator in consecutive patients receiving Trastuzumab correlated directly with the likelihood of developing CRTCD. 58% of all of the patients in the very high risk category developed CRTCD. This retrospective analysis validates the use of this tool in our patient population and will aid in the identification of patients that would require to have a more aggressive preemptive management, especially in the high and very high risk population using a multidisciplinary cardio-oncology team to optimize their surveillance and reduce their likelihood of cardiac dysfunction.

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