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Clinical trials · failure tracking
Oncology studies whose overall status is TERMINATED, WITHDRAWN or SUSPENDED on ClinicalTrials.gov, with the stop reason exactly as the registrant posted it. A category is attached only when an explicit keyword rule matches the text; CancerIndex never infers why a study stopped.
2 stopped studies mapped to Prostate Adenocarcinoma without Neuroendocrine Differentiation and descendants · 100% state a reason
Over the 2 studies matching the cancer, status and year filters (the category filter does not change this chart). Each study is counted once, in the first matching category; greyed bars are studies whose text matched no rule or was empty.
Computedrules ci-stop-reasons-v1 · keyword matching only
A category is assigned when one of its keywords appears in the posted text (case-insensitive, whole words). Rules are tested in this order and the first match wins; every match is kept in the API (reasonMatches).
| NCT | Title | Phase | Status | First posted | Lead sponsor | Why stopped (as posted) | Category |
|---|---|---|---|---|---|---|---|
| NCT03360721 | Apalutamide, Abiraterone Acetate, and Prednisone in Treating Participants With Metastatic… | Phase 2 | terminated | Dec 4, 2017 | M.D. Anderson Cancer Center | \<75% participation | Other (stated, no rule matched) |
| NCT03570476 | Olaparib Before Surgery in Treating Participants With Localized Prostate Cancer | Phase 2 | terminated | Jun 27, 2018 | University of Washington | Terminated due to slow accrual | Enrollment / accrual |
Stop reasons are registrant-reported free text and are displayed verbatim (truncated; hover for the full text). Categories come from explicit keyword rules and are never inferred from the study design, sponsor or outcome; a study that stopped for several reasons is filed under the first rule that matched. A TERMINATED status does not imply a negative result.
Data updated 22 days agoSource updated Mar 16, 2026source: clinicaltrials