Spondyloarthritis & psoriatic arthritis

Race, Ethnicity, and Geographic Diversity in Pivotal Psoriatic Arthritis Clinical Trials: Further Progress Needed

Arthritis Care Res (Hoboken)Published Descriptive epidemiologic study

Authors' conclusion

Racial and ethnic diversity in pivotal PsA trials remains limited.

Study context

Population
Pivotal trials of b/tsDMARDs approved for psoriatic arthritis (PsA) in the United States, start dates 2000–201929 trials
Outcome
Reporting and representation of race, ethnicity and geographic distribution of trial sites
Methodological details29 pivotal PsA trials for 16 targeted therapies, Data from journal publications, the Drugs@FDA database and ClinicalTrials.gov
  • 29 pivotal PsA trials for 16 targeted therapies
  • Data from journal publications, the Drugs@FDA database and ClinicalTrials.gov

Main finding

As reported in the abstract

Reporting and representation of race, ethnicity and geography
Trials reporting race data
93%
Race reporting in journal publications
86%
Of journal publications reporting race, reporting only proportion of White participants
46%
Trials with ethnicity data (primarily ClinicalTrials.gov; improved in recent years)
41%
White participants (14,165 participants, 27 trials with race data)
92%
Asian participants
7%
Black, American Indian/Alaska Native, or Native Hawaiian/Pacific Islander participants
fewer than 1%
Hispanic or Latino participants (8,105 participants, 12 trials with ethnicity data)
11%
Trials with location data
26
US trial activity: Texas (24 trials), Florida and Pennsylvania (22 each), California (20); correlation with state population size
r = 0.78, P < 0.0001
Countries with trial sites (primarily North America and Europe; fewer in Asia, Africa, Latin America)
55

Original publication

Race, Ethnicity, and Geographic Diversity in Pivotal Psoriatic Arthritis Clinical Trials: Further Progress Needed. Arthritis Care Res (Hoboken). Published 1 August 2025. doi:10.1002/acr.25574

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