Favorable Short-Term and Long-Term Outcomes among Patients with Prior History of Malignancy Undergoing Transcatheter Aortic Valve Implantation

BACKGROUND: Transcatheter aortic valve replacement (TAVR) is now the treatment of choice for high-surgical risk patients with symptomatic aortic stenosis. Little is known regarding the outcome of TAVR in patients with previous malignancy. METHODS: We investigated 477 patients who underwent TAVR in a tertiary medical center. Subjects were divided into two groups according to malignancy status: no history of malignancy (n ≤ 386) and positive history of malignancy (n ≤ 91). RESULTS: Mean age of the study population was 81 ± 7 years, and 52% were men. No major differences in baseline characteristics were found between groups. All-cause mortality was 24% for both malignancy and non-malignancy groups at a mean follow-up of 851 ± 629 days. Kaplan-Meier survival analysis demonstrated no difference in all-cause mortality between groups. Multivariate Cox regression analysis showed that malignancy status did not affect prognosis regarding overall mortality (hazard ratio [HR], 0.83; 95% confidence interval [CI], 0.5-1.4; P≤.46). However, cancer therapy administered within 12-months of TAVR was significantly associated with increased total mortality among patients undergoing TAVR (HR, 4.38; 95% CI, 1.14-16.77; P≤.03). CONCLUSIONS: Malignancy is a common comorbidity among TAVR candidates. Mere history of malignancy among elderly patients does not adversely affect short-term or long-term outcomes after TAVR; however, history of recent (<1 year) cancer-related treatment increases the risk for long-term mortality after TAVR. Decisions regarding TAVR among oncological patients should be individualized according to their malignancy status and anticipated life expectancy.