ABSTRACT
					
	On August 16, 2019, the U.S. Food and Drug Administration approved 
expanding the indication for transcatheter aortic valve replacement 
(TAVR) to low-risk patients with symptomatic severe aortic stenosis. The
 decision was based on the results of 2 pivotal trials that confirmed 
superiority (PARTNER [Placement of Aortic Transcatheter Valves] 3) or 
noninferiority (Evolut Low Risk [LR]) of TAVR as compared with SAVR at 
1- and 2-year follow-up, respectively. As compared with 
intermediate-risk cohorts, the sample size in these trials was smaller 
and the total number of primary endpoint events was nearly 3 times as 
low (193 vs. 615). The total number of deaths from any cause or 
disabling stroke at 1 year in the low-risk cohorts was 62, which is 
substantially lower than the numbers in intermediate-, high-, and 
inoperable-risk cohorts. In Evolut LR, only 137 of 1,403 patients (9.8%)
 completed the 2-year follow-up, with 91.2% requiring model-based 
imputation. Thus, the quantum of evidence is insufficient for endorsing 
TAVR as the preferred intervention for these patients.