Abstract
22 Background: GU cancers account for 1 in 5 of new cancer diagnoses in the USA. Significant racial disparities exist in terms of incidence, treatment and outcomes. Current FDA clinical trial guidance advises race reporting as a minimum of 5 categories (White/Caucasian, Black, Asian, American Indian or Alaskan Native [AIAN] and Native Hawaiian or Pacific Islander [NHPI]). Guidelines from the International Committee of Medical Journal Editors (ICMJE) recommend that authors should as a minimum, provide descriptive data for variables such as race and ethnicity. We analysed racial diversity in GU registration trials and compliance with FDA/ICMJE guidance in reporting. Methods: A retrospective review of new market authorisations in GU cancers from Jan 2006 to Oct 2020 was conducted utilizing the FDA website. Clinical trials cited on the licensing label for market authorization were recorded and corresponding registration trial publication identified. If race was unreported or partially reported (defined ≤3 groups), then the trial report on clinicaltrials.gov or FDA website was analysed. Total proportion of racial group participation and the proportion of registration trials with adequate reporting was determined. Results: We identified 42 new licensing indications, involving 33 unique drugs. Overall 30,316 patients participated in GU cancer registration trials; 21,068 (69.5%) White or Caucasian, 2516 (8.3%) Asian, 621(2%) Black or African American, 92 (0.3%) AIAN, 17 (0.1%) NHPI, 558 (1.8%) other or multiple races and 5463 (18%) unknown. Table shows breakdown by tumour group. Race reporting occurred in 23 (55%) registration trial publications, of which 5 provided only limited information (e.g. Caucasian only). For studies where no race information was reported, a further 10 (24%) had information within the trial report. In the 5 years prior to the introduction of FDA guidance in 2016 only 30% of registration studies met FDA/ICJME requirements. Since 2016 this has improved significantly to 60%. Conclusions: Despite the higher incidence of GU cancers in non-white populations, this study has revealed the relative over-representation of white participants in GU registration trials. The inclusion of black trial participants is in particular disproportionately low when compared to the burden of disease in this population group. Recruitment of black and other minority participants should be a research priority. [Table: see text]
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