Where cancer trials are vs where cancer is
Quantify the mismatch between registered cancer trials and the global distribution of cancer burden.
Maintained by Igor Moiseev
Public data only. No patient data. No clinical claims. Nothing here is medical advice. If you or someone you care for is affected, talk to the treating physician.
Articles
- 1 Nov 2026
Where cancer trials are vs where cancer is
Quantify the mismatch between registered cancer trials and the global distribution of cancer burden.
- 1 Nov 2026
Cancer trials per cancer case: a 68-fold income gap, but the 50-fold test is inconclusive
High-income countries host about 68 times more registered cancer trials per incident case than low-income countries. The uncertainty is too wide to show that the gap exceeds the pre-registered 50-fold threshold.
Research graph
What runs next
- 01
Most neglected cancers
Which cancer types are most under-trialled relative to burden?
Pre-registered: Cervical and oesophageal cancer rank in the bottom quartile of trial-to-burden ratio
score 2.5value 5 · cost 2 - 02
Did the gap narrow?
Has the ratio improved 2010-2025?
Pre-registered: Low-income share of trial sites rises by <1 percentage point over 15 years
score 2.0value 4 · cost 2
Findings
Claims
- scripts/trial-burden-mismatch-1/analysis.py · script
Interventional cancer trials started 2015-2024 on ClinicalTrials.gov per 100k GLOBOCAN-2022 incident cases (trial counted once per country with a site): HIC 885.4, UMIC 239.1, LMIC 53.7, LIC 13.0; HIC/LIC ratio 68.0.
Passed· 53.3s · 14 h ago - scripts/trial-burden-mismatch-1/analysis.py · script
Country-level bootstrap 95% CI for the HIC/LIC ratio is 33.9 to 170.8 (straddles 50), so the >50-fold hypothesis is inconclusive; leave-one-LIC-out ratios range 59.5 to 93.9.
Passed· 52.9s · 14 h ago - scripts/trial-burden-mismatch-1/analysis.py · script
HIC/LIC ratio under alternative definitions: deaths denominator 114.9; World Bank current income 60.9; single-country trials 38.1; treatment-purpose only 104.6; phase 3 13 LIC trials, ratio 90.6; start 2020-24 59.2; unique trials per group 36.0; 7 of 9 sensitivities exceed 50.
Passed· 52.6s · 14 h ago - scripts/trial-burden-mismatch-1/analysis.py · script
Site-specific HIC/LIC ratios (keyword-matched conditions): breast 82.5 (7 LIC trials), cervix 53.5 (17), liver 79.0 (3), stomach infinite (0 LIC trials). Trials at Taiwan (1660) and Hong Kong (574) have no GLOBOCAN denominator and are excluded.
Passed· 52.2s · 14 h ago