Quantifying Clinical Trial Diversity of FDA Novel Drug Approvals

Author:

Fitzsimmons William EORCID,Idris Muhammed YORCID,Pemu PriscillaORCID

Abstract

AbstractBackgroundHealth care inequity includes the lack of adequate representation of various populations in clinical trials. Government, academic and industry organizations have highlighted these issues and committed to actions to improve. In order to assess the current status and future success of these initiatives a quantitative objective measure to assess the state of clinical trial diversity is needed.MethodsFDA review documents for all novel drug approvals from January 2022 through February 16, 2023 were assessed using a scorecard that considers diversity across different demographic subgroups including age (>65 yo), sex (female), race (Black and Asian) and ethnicity (Hispanic/Latino). The scorecard assigns each drug a letter grade, between A and F, for each subgroup (and overall) based on 1) the percent of each sub-population included in the trials and grades relative to the percent of the US population, 2) the number of participants from each subpopulation that received the novel new drug in the trials, 3) the incidence or prevalence of the disease/condition in each of the sub-populations.ResultsThe FDA approved 43 novel new drugs for 44 indications (one drug was simultaneously approved for two indications). The three drugs with A Grades reflecting the best diversity in their registration trials were tapinarof (Vtama from Dermavant), daprodustat (Jesduvroq from GlaxoSmithKline) and eflapegrastim (Rolvedon from Spectrum Pharmaceuticals.) There was good representation of elderly and females with only two drugs receiving a D grade in either of these sub-populations. In contrast, Black and Hispanic representation was often inadequate with 4 drugs receiving F grades. There were 9 drugs (20%) where there were no Black participants receiving the novel new drug and an additional 14 approvals where there were <10 Black participants receiving the novel drug. The median number of Black participants receiving the investigational drug was 9. In the Hispanic/Latino population there were 2 approvals with no Hispanic participants receiving the novel drug and 14 approvals where there were < 10 Hispanic participants receiving the drug. The median number of Hispanic participants receiving the novel drug was 12.5.ConclusionsThis newly developed scorecard provides an objective quantitative approach to assess the current state of diversity in clinical trials supporting new drug approvals. Substantial improvement in racial and ethnic representation is needed. Meaningful change will require actions and cooperation amongst all stakeholders to address this multifaceted issue and will take commitment, perseverance, and appropriate incentives.

Publisher

Cold Spring Harbor Laboratory

Reference17 articles.

1. National Academies of Sciences, Engineering, and Medicine 2022. Improving Representation in Clinical Trials and Research: Building Research Equity for Women and Underrepresented Groups. Washington, DC: The National Academies Press. https://doi.org/10.17226/26479.

2. GAO-23-105245 CANCER CLINICAL TRIALS; Federal Actions and Selected Non-Federal Practices to Facilitate Diversity of Patients. December, 2022.

3. DEPARTMENT OF HEALTH AND HUMAN SERVICES; Food and Drug Administration; [Docket No. FDA–2021–D–0789] Diversity Plans To Improve Enrollment of Participants From Underrepresented Racial and Ethnic Populations in Clinical Trials; Draft Guidance for Industry; Availability AGENCY: Food and Drug Administration, HHS. ACTION: Notice of availability. Federal Register / Vol. 87, No. 72 / Thursday, April 14, 2022 / Notices.

4. H.R.2617 - Consolidated Appropriations Act, 2023 https://www.congress.gov/bill/117th-congress/house-bill/2617.

5. New Drugs at FDA: CDER’s New Molecular Entities and New Therapeutic Biological Products https://www.fda.gov/drugs/development-approval-process-drugs/new-drugs-fda-cders-new-molecular-entities-and-new-therapeutic-biological-products.

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