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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Oncology studies whose overall status is TERMINATED, WITHDRAWN or SUSPENDED on ClinicalTrials.gov, with the stop reason exactly as the registrant posted it.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.
8 stopped studies mapped to Human Papillomavirus-Related Pharyngeal Squamous Cell Carcinoma and descendants · 100% state a reason
Over the 8 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 |
|---|---|---|---|---|---|---|---|
| NCT06790966 | Phase 3 Study of PDS0101 and Pembrolizumab in HPV16+ Recurrent/Metastatic Head and Neck…(VERSATILE-003) | Phase 3 | terminated | Jan 24, 2025 | PDS Biotechnology Corp. | The study is being discontinued solely based on financial constraints and is not related to the… | Safety / toxicity |
| NCT03799445 | Ipilimumab, Nivolumab, and Radiation Therapy in Treating Patients With HPV Positive… | Phase 2 | terminated | Jan 10, 2019 | M.D. Anderson Cancer Center | \<75% participation | Other (stated, no rule matched) |
| NCT04301011 | Study of TBio-6517 Given Alone or in Combination With Pembrolizumab in Solid Tumors(RAPTOR) | Phase 1 | terminated | Mar 9, 2020 | Turnstone Biologics, Corp. | Sponsor decision | Sponsor / business decision |
| NCT03601507 | Alpelisib in Treating Participants With Transorally Resectable HPV-Associated Stage I-IVA… | Phase 2 | terminated | Jul 26, 2018 | University of Arizona | Novartis has chosen to withdraw support for this trial | Other (stated, no rule matched) |
| NCT05061940 | This SCR-103 Protocol Will Permit Sites to Proactively Assess TAA, HLA and HPV-16 Status… | — | terminated | Sep 30, 2021 | Repertoire Immune Medicines | Development program terminated | Other (stated, no rule matched) |
| NCT04001413 | Therapy for High-Risk HPV 16-Positive Oropharynx Cancer Patients | Phase 2 | withdrawn | Jun 28, 2019 | Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins | Sponsor withdrew funding | Funding |
| NCT03575234 | Nivolumab & IRX-2 With Surgery for Resectable Stage III-IVA Oral Cavity Cancer or… | Phase 1 | withdrawn | Jul 2, 2018 | Emory University | funding and drug were withdrawn | Funding |
| NCT03611205 | Interim Digital PET/CT in Predicting Outcomes for Participants With Locally Advanced… | N/A | withdrawn | Aug 2, 2018 | Ohio State University Comprehensive Cancer Center | PI decision | Other (stated, no rule matched) |
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 Sep 2, 2026source: clinicaltrials