Background
Oral anti-cancer therapies have quickly moved to the forefront of cancer treatment for several oncologic disease states. While these treatments have led to improvements in prognosis and ease of administration, many of these agents carry the risk of serious short- and long-term toxicities affecting the cardiovascular system. This prompted the Journal of the American Heart Association (JAHA) to release special guidance focused on cardiovascular monitoring strategies for anti-cancer agents. The primary objective of this retrospective review was to evaluate compliance with cardiovascular monitoring based on JAHA cardio-oncologic guidelines. The secondary objective was to assess disparities in cardiovascular monitoring based on markers of equity such as race/ ethnicity, rurality, socioeconomic status and gender.
Methods
Patients who initiated pazopanib, cabozantinib, lenvatinib, axitinib, regorafenib, nilotinib, ibrutinib, sorafenib, sunitinib, ponatinib or everolimus between January 1, 2019 and December 31, 2022 at a VHA VISN 12 site with oncology services were followed forward until treatment discontinuation or 12 months of therapy had been completed. Data was acquired utilizing the VA Informatics and Computing Infrastructure (VINCI) and the Corporate Data Warehouse (CDW). The following cardiovascular monitoring markers were recorded at baseline and months 3, 6, 9 and 12 after initiation anti-cancer therapy: blood pressure, blood glucose, cholesterol, ECG and echocardiogram. Descriptive statistics were used to examine all continuous variables, while frequencies were used to examine categorical variables. Univariate statistics were performed on all items respectively.
Results
A total of 219 patients were identified initiating pre-specified oral anti-cancer therapies during the study time period. Of these, a total of n=145 met study inclusion criteria. 97% were male (n=141), 80% (n=116) had a racial background of white, 36% (n=52) live in rural or highly rural locations and 23% (n=34) lived in a high poverty area. Based on the primary endpoint, the mean compliance with recommended cardiovascular monitoring was 44.95% [IQR 12]. There was no statistically significant difference in cardiovascular monitoring based on equity.
Conclusions
Overall uptake of cardiovascular monitoring markers recommended by JAHA guidance is low. We plan to evaluate methods to increase these measures, utilizing clinical pharmacy provider support throughout VISN 12.