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Approval of VYNDAMAX was based on ATTR-ACT, a phase 3, multicenter, international, randomized, double-blind, placebo-controlled study, which evaluated pooled VYNDAQEL® (tafamidis meglumine) doses of 20 mg and 80 mg in 441 patients with wild-type or hereditary transthyretin cardiac amyloidosis*—a single VYNDAMAX 61-mg capsule is bioequivalent† to VYNDAQEL 80 mg (four 20-mg capsules) and is not interchangeable on a per-mg basis.1-3
The 6MWT evaluates patients’ functional capacity by measuring the distance walked in 6 minutes. LS mean (SE) change in distance walked on the 6MWT from baseline to month 30 was a predefined secondary endpoint of ATTR-ACT (pooled VYNDAQEL, n=264; placebo, n=177; p<0.0001). Total distances walked on the 6MWT (pooled VYNDAQEL, 296 m; pooled placebo, 222 m).1,3
The KCCQ-OS score assesses patient health status using the following domains: total symptoms (symptom frequency, symptom burden), physical limitation, QoL, and social limitation. LS mean (SE) change from baseline to month 30 in the KCCQ-OS score was a predefined secondary endpoint of ATTR-ACT. KCCQ-OS scores range from 0 to 100, with lower scores denoting poorer QoL. Total KCCQ-OS scores (pooled VYNDAQEL -7; pooled placebo -21).1,3
Key secondary endpoint overview: The treatment effect of tafamidis on functional capacity and health status was assessed by the 6MWT and KCCQ-OS score, respectively. Both key secondary endpoints evaluated change from baseline to month 30.3
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