Cancer is Africa's fastest-growing killer, but the trial landscape is dominated ...
Africa Trials
2,182
US Trials
49,054
Gap Ratio
22x
Nations
54
Key Finding
Africa hosted 2,182 cancer trials versus 49,054 in the United States, a 22-fold disparity in research investment.
Regional Comparison
Distribution Analysis
Inequality Profile
Temporal & Structural
Why It Matters
Cancer is Africa's fastest-growing killer, but the trial landscape is dominated by HIV-related cancers (Kaposi, cervical) while the epidemiological transition brings rising breast, prostate, and colorectal cancers.
The Evidence 129 words · target 156
In the burden-versus-investment landscape of African health research, does the distribution of cancer trials across African nations reveal a systematic research gap? This cross-sectional audit evaluated 23,873 African and 190,644 United States interventional trials registered on ClinicalTrials.gov through April 2026. Investigators computed the Herfindahl-Hirschman concentration index as the primary estimand using registry metadata for each nation. Africa hosted 2,182 cancer trials representing 9.1% of its total portfolio compared to 49,054 in the United States and 28,724 in Europe. The Herfindahl-Hirschman index reached 3472.872, exceeding the threshold of 0.25 that indicates a highly concentrated distribution. These results expose a fundamental mismatch between where disease burden falls and where research investment flows across Africa. Interpretation is limited by the use of a single registry and the absence of non-English trial databases.
Sentence Structure
Question
In the burden-versus-investment landscape of African health research, does the distribution of cancer trials across African nations reveal a systematic research gap?
Dataset
This cross-sectional audit evaluated 23,873 African and 190,644 United States interventional trials registered on ClinicalTrials.
Method
gov through April 2026.
Primary Result
Investigators computed the Herfindahl-Hirschman concentration index as the primary estimand using registry metadata for each nation.
Robustness
Africa hosted 2,182 cancer trials representing 9.
Interpretation
1% of its total portfolio compared to 49,054 in the United States and 28,724 in Europe.
Boundary
The Herfindahl-Hirschman index reached 3472.
Extra
872, exceeding the threshold of 0.
Extra
25 that indicates a highly concentrated distribution.
Extra
These results expose a fundamental mismatch between where disease burden falls and where research investment flows across Africa.
Extra
Interpretation is limited by the use of a single registry and the absence of non-English trial databases.