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Participation of Women in Clinical Trials Increasing Due to Gender-based Drugs

February 29, 2020

The number of women who participated in clinical trials that led to FDA drug approvals increased dramatically in the past year, rising from 56 percent of trial participants in 2018 to 72 percent in 2019, driven more by an increase in testing drugs specifically aimed at women than gender diversity.
Overall, 46,391 patients participated globally in the trials that led to the 48 novel drugs approved by the FDA in 2019, according to a new report from the FDA’s Center for Drug Evaluation and Research. Forty percent of trial participants in 2019 were from the U.S.
The main therapeutic areas covered by 2019’s approvals are hematology (six new drugs tested on 1,255 patients), oncology (11 drugs tested on 3,593 patients), neurology (six drugs tested on 10,390 patients), and psychiatry and sleep disorders (five drugs tested on 3,645 patients).
Seven of the approved drugs were tested only in the U.S., including trials for schizophrenia, acute migraine and irritable bowel syndrome. Four trials had no U.S. participants, including studies of narcolepsy and tuberculosis.
Trial participation in 2019 mostly held to previous years’ racial/ethnic distribution, with slight deviations. The representation of African Americans was 9 percent, down from 11 percent in 2017 and 2018, but up from 5 percent in 2015 and 7 percent in 2016.
Representation of Asian participants has declined steadily from 12 percent in 2015 to 9 percent in 2019. Participation of Hispanic patients, however, rose to 18 percent in 2019 from 14 percent in 2017 and 2018. No data on Hispanic participants was reported in 2015 and 2016.
Trial participation by age has varied over the past five years, with patients age 65 and older making up 37 percent of trials in 2015, 21 percent in 2016, 32 percent in 2017, 15 percent in 2018 and 36 percent in 2019. The variation, the agency suggests, is due to the number of rare disease drugs, which usually focus on younger patients, approved each year.
CDER created the Drug Trials Snapshots initiative to share information on the diversity of participants in clinical trials and the extent to which safety and efficacy data is based on demographic factors such as sex, age, race and ethnicity. CDER posts snapshots of individual drugs online as soon as they are approved.
To read the 2019 FDA Drug Trials Snapshot, click here: https://bit.ly/2TiYlY0.
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