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Workforce, economic, and infrastructural barriers to global oncology clinical trial participation: Focus on sub-Saharan Africa

Oyepeju F Abioye, Adeoluwa Adewuyi, S. Ozogbo, Inemesit Akpan, G. Gorecki, Timilehin Abioye, N. Florez

Journal of Clinical Oncology, 2025

1,500 participants

Abstract

11091

Background:

Despite Sub-Saharan Africa's (SSA) growing cancer burden, the region remains grossly underrepresented in global oncology clinical trials. With only 109 open trials identified continent-wide in 2019 compared to 7,557 in the United States, this disparity highlights systemic barriers. As well, the unique genetic variations in the African pan-genome makes a strong case for urgent population-specific research.

Methods:

Using the Pan African Clinical Trial Registry, we identified 151 oncology trials across 255 continent-wide recruitment sites. A review of published literature was carried out to assess oncologist distribution and SDI index within highlighted countries hosting clinical trials in SSA.

Results:

Of the 1,759 clinical oncologists identified in SSA, Egypt accounts for 85.2% (n=1,500) and hosts 46.36% of all oncology trials (n=70). Kenya, with only 0.34% oncologists (n=6), contributes 17.88% of clinical trials (n=27). Nigeria, with 3.63% oncologists (n=64), hosts 11.26% of trials (n=17). Ethiopia and Tanzania each house 0.34% oncologists (n=6), yet Ethiopia conducts 7.95% (n=12) and Tanzania 3.97% (n=6) of trials. South Africa, with 2.27% oncologists (n=40), hosts 3.97% of trials (n=6). Other countries, including Ghana and Morocco, collectively contribute to 8.61% of trials (n=13) with varying oncologist representation. The few available trials are mostly concentrated in Egypt, Kenya, and Nigeria. In addition, most trials disproportionately focus on…

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