Objective: Demographic minorities are underrepresented in clinical trials. For the approval of new drug applications (NDAs), the Food and Drug Administration (FDA) has asserted that clinical trial enrollment should represent the demographics of patients likely to receive the trial drug. The aim of this study is to assess the demographics of clinical trials included in NDAs and biologics license applications (BLAs) approved by the FDA since 1990 for allergic rhinitis (AR), a condition whose demographic prevalence mirrors the US population.
Methods: Federal Freedom of Information Act requests were submitted to the US government to obtain documents related to all relevant NDAs and BLAs. The Drugs@FDA database was queried for all clinical trial documentation. Demographic data were extracted from clinical trials used to inform FDA approval for AR pharmacotherapies. Demographics were analyzed relative to national US Census data.
Results: Since 1990, 22 drugs have been approved for AR. The racial, ethnic, and sex composition of all included study populations differed significantly (p < 0.05) from the demographics of AR and from US Census data. Most NDAs and BLAs included overrepresentation of White participants and underrepresentation of Black, Asian, Pacific Island, Native American, and Hispanic participants.
Conclusion: The patients enrolled in clinical trials used to inform FDA approval for AR pharmacotherapeutics do not represent the demographics of the United States or the demographics of AR. The clinical significance of unrepresentative demography between study and treatment populations has been examined for several medical disorders, but has not been studied for AR.
Level of evidence: 4 Laryngoscope, 133:755-763, 2023.
Keywords: allergic rhinitis; clinical trial enrollment; health care disparities; socioeconomic disparities.
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