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First granted example of novel FDA trial design under Expedited Access Pathway for premarket approval: BeAT-HF
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First granted example of novel FDA trial design under Expedited Access Pathway for premarket approval: BeAT-HF
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Journal Article
First granted example of novel FDA trial design under Expedited Access Pathway for premarket approval: BeAT-HF
2018
Overview
The Food and Drug Administration (FDA) initiated the Expedited Access Pathway (EAP) to accelerate approval of novel therapies targeting unmet needs for life-threatening conditions. EAP allows for the possibility of initial FDA approval using intermediate end points with postapproval demonstration of improved outcomes.
Describe the EAP process using the BeAT-HF trial as a case study.
BeAT-HF will examine the safety and effectiveness of baroreflex activation therapy (BAT) in heart failure patients with reduced ejection fraction using an Expedited and Extended Phase design. In the Expedited Phase, BAT plus guideline-directed medical therapy (GDMT) will be compared at 6 months postimplant to GDMT alone using 3 intermediate end points: 6-minute hall walk distance, Minnesota Living with Heart Failure Questionnaire, and N-terminal pro–B-type natriuretic peptide. The rate of heart failure morbidity and cardiovascular mortality will be compared between the arms to evaluate early trending using predictive probability modeling. Sample size of 264 patients randomized 1:1 to BAT + GDMT versus GDMT alone provides 81% power for the Expedited Phase intermediate end points. For the Extended Phase, the heart failure morbidity and cardiovascular mortality end point is based on an expected event rate of 0.4 events/patient/year in the GDMT arm. With an adaptive sample size selection design for robustness to inaccurate assumptions, a sample size of 480-960 randomized patients followed ≥2 years allows detecting a 30% reduction in the primary end point with a power of 97.5%.
Through a unique collaboration with FDA under the EAP, the BeAT-HF trial design allows for the possibility of approval of BAT, initially for symptom relief and subsequently for outcomes improvement.
Publisher
Elsevier Inc,Elsevier Limited
Subject
/ Carotid Arteries - physiology
/ Design
/ Electric Stimulation Therapy - instrumentation
/ Electric Stimulation Therapy - methods
/ Heart Failure - physiopathology
/ Humans
/ Patients
/ Randomized Controlled Trials as Topic - economics
/ Randomized Controlled Trials as Topic - methods
/ Reflexes
/ Research Design - statistics & numerical data
/ Therapy
