Public opinion regarding U.S. Food and Drug Administration approval of aducanumab and potential policy responses: A nationally representative survey

Abstract

Background: Despite controversy among experts regarding aducanumab's approval by the U.S. Food and Drug Administration, little is known about public opinion on this matter.

Methods: We conducted a representative survey of U.S. adults ages 35 and older to (1) determine opinions regarding aducanumab's approval, (2) identify any evidence of reputational injury to the Food and Drug Administration, and (3) explore opinions regarding policy responses available to policymakers, such as those relating to a national coverage determination by the Centers for Medicare and Medicaid Services. The survey was administered online and in English and Spanish using a probability-based sample derived from the National Opinion Research Center's AmeriSpeak® panel. Selection probabilities in the panel and survey design account for differences in population distribution and expected response rates by demographic. The survey was analyzed using survey weights to adjust for selection probabilities and non-response.

Results: A total of 1025 respondents completed the survey. While approximately three-quarters of respondents were initially unfamiliar with aducanumab, respondents were less supportive of the drug's approval once given information about the drug's potential clinical and economic impact. Sixty-three percent of respondents support restricting aducanumab access to patients most likely to benefit. Seventy-one percent indicated a willingness to enroll a family member with mild Alzheimer's disease in a "waitlist"-style trial to further study aducanumab; sixty percent indicated a willingness to enroll a family member in a randomized placebo-controlled trial. Eighty-one percent agree aducanumab should be withdrawn from the market if confirmatory trials fail. The median respondent was willing to pay $1-5 in higher Part B premiums to cover aducanumab.

Conclusion: These findings demonstrate support for a range of proposed policies in response to aducanumab's approval. The opinions of an informed public ought to be considered when developing policies in response to aducanumab's approval.

Keywords: Alzheimer's; Medicare; coverage with evidence development; dementia; long-term care.