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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Oncology studies whose overall status is TERMINATED, WITHDRAWN or SUSPENDED on ClinicalTrials.gov, with the stop reason exactly as the registrant posted it.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.
2,060 stopped studies mapped to Malignant Neoplasm of Unknown Primary and descendants · 91% state a reason
Over the 2,060 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 |
|---|---|---|---|---|---|---|---|
| NCT05423197 | 89Zr-Panitumumab for Assessment of Suspected Metastatic Lesions on 18F-FDG-PET/CT in HNSCC | Phase 2 | withdrawn | Jun 21, 2022 | Andrei Iagaru | logistical issues | Other (stated, no rule matched) |
| NCT05791448 | AU409 for the Treatment of Advanced Primary Liver Cancers or Solid Tumor With Liver… | Phase 1 | suspended | Mar 30, 2023 | University of Southern California | Pending protocol amendment | Other (stated, no rule matched) |
| NCT05286827 | Olaparib in Subjects With Advanced Pancreatic Acinar Cell Carcinoma | Phase 2 | terminated | Mar 18, 2022 | National Cancer Institute (NCI) | The study was terminated due to low accrual and insufficient efficacy seen in first few… | Efficacy / futility |
| NCT05453799 | Vudalimab for the Treatment of Locally Advanced or Metastatic Anaplastic Thyroid Cancer… | Phase 2 | suspended | Jul 12, 2022 | Northwestern University | Per sponsor letter, due to a business decision based on reprioritization of their internal… | Enrollment / accrual |
| NCT02769962 | Trial of EP0057, a Nanoparticle Camptothecin With Olaparib in People With… | Phase 1 / Phase 2 | terminated | May 12, 2016 | National Cancer Institute (NCI) | Accrual and drug manufacturing and supply were discontinued in 2025. | Drug supply |
| NCT03987555 | Paclitaxel Therapeutic Drug Monitoring in Cancer Patients | — | suspended | Jun 17, 2019 | Wake Forest University Health Sciences | Funding | Funding |
| NCT05737615 | PET Imaging Using 64Cu-Tz-SarAr and hu5B1-TCO in People With Pancreatic, Colorectal,… | Phase 1 | withdrawn | Feb 21, 2023 | Memorial Sloan Kettering Cancer Center | Study tracer is currently unavailable | Other (stated, no rule matched) |
| NCT06610097 | TNBC Gut Microbiota During Neoadjuvant Treatment | N/A | withdrawn | Sep 24, 2024 | Scripps Health | no patients were able to be enrolled | Enrollment / accrual |
| NCT05591092 | Radioiodine Planar and a SPECT/CT Imaging With Iodine-123 for Evaluation of Follicular… | — | terminated | Oct 24, 2022 | Mayo Clinic | Slow accrual | Enrollment / accrual |
| NCT04519879 | White Button Mushroom Sup for the Reduction of PSA in Pts With Biochemically Rec or… | Phase 2 | suspended | Aug 20, 2020 | City of Hope Medical Center | 05/26/2026 DSMC: Delinquent PMT reporting. | Other (stated, no rule matched) |
| NCT05065736 | Using a PET Imaging Agent, 18F-Clofarabine (CFA), to Measure Deoxycytidine Kinase… | Early Phase 1 | terminated | Oct 4, 2021 | Roberto Vargas | Funding unavailable | Funding |
| NCT03991130 | High Dose IL-2 in Combination With Anti-PD-1 | Phase 2 | terminated | Jun 19, 2019 | Gregory Daniels | Lack of funding | Funding |
| NCT04221438 | Testing Treatment With Encorafenib and Binimetinib Before Surgery for Melanoma With Lymph… | Phase 2 | terminated | Jan 9, 2020 | ECOG-ACRIN Cancer Research Group | Slow accrual | Enrollment / accrual |
| NCT05226507 | A Phase 1 Clinical Study of NXP800 in Subjects With Advanced Cancers and Expansion in… | Phase 1 | terminated | Feb 7, 2022 | Nuvectis Pharma, Inc. | Study terminated due to various reasons impacting the feasibility of future clinical development | Other (stated, no rule matched) |
| NCT05199285 | A Phase II Study of Nivolumab + Ipilimumab in Advanced HCC Patients Who Have Progressed… | Phase 2 | terminated | Jan 20, 2022 | Academic and Community Cancer Research United | Sponsor has withdrawn support for the study. | Other (stated, no rule matched) |
| NCT07075627 | A Study to Evaluate the Incidence of Clinically Suspicious Lambert-Eaton Myasthenic… | — | withdrawn | Jul 20, 2025 | Addario Lung Cancer Medical Institute | Sponsor/Funder decision | Other (stated, no rule matched) |
| NCT03412058 | Identifying the Predictive Factors of Response to PD-1 or PD-L1 Antagonists(CHECK'UP) | N/A | terminated | Jan 26, 2018 | UNICANCER | The study was terminated prematurely due to insufficient patient recruitment | Enrollment / accrual |
| NCT03662074 | Subsequent Line Gemcitabine and Nivolumab in Treating Participants With Metastatic Small… | Phase 2 | terminated | Sep 7, 2018 | Wake Forest University Health Sciences | After interim analysis decided not to move forward with continuing the trial. | Efficacy / futility |
| NCT05058651 | Evaluating the Addition of the Immunotherapy Drug Atezolizumab to Standard Chemotherapy… | Phase 2 / Phase 3 | suspended | Sep 28, 2021 | National Cancer Institute (NCI) | End of Initial Phase of Multi-phase protocol | Other (stated, no rule matched) |
| NCT05673200 | Testing the Addition of an Anti-cancer Drug, ASTX727 (Cedazuridine, Decitabine), to… | Phase 1 | suspended | Jan 6, 2023 | National Cancer Institute (NCI) | Other - DLT assessment and phase 2 dose determination | Other (stated, no rule matched) |
| NCT05703854 | Study of CAR.70-engineered IL15-transduced Cord Blood-derived NK Cells in Conjunction… | Phase 1 / Phase 2 | suspended | Jan 30, 2023 | M.D. Anderson Cancer Center | PI Request | Other (stated, no rule matched) |
| NCT03695250 | BMS-986205 and Nivolumab as First or Second Line Therapy in Treating Patients With Liver… | Phase 1 / Phase 2 | terminated | Oct 4, 2018 | Edward Kim | Funding source decision to terminate study. | Funding |
| NCT01876771 | A Trial to Assess the Safety and Effectiveness of Lutetium-177 Octreotate Therapy in… | Phase 2 | suspended | Jun 13, 2013 | AHS Cancer Control Alberta | Study closed to accrual given widespread availability of the similar marketed product,… | Enrollment / accrual |
| NCT05616624 | ADI-PEG 20 in Combination With Gemcitabine and Docetaxel After Progression on Frontline… | Phase 1 / Phase 2 | terminated | Nov 15, 2022 | Washington University School of Medicine | Polaris has decided to close to accrual due to low enrollment | Enrollment / accrual |
| NCT05714553 | NUC-3373 in Combination With Other Agents in Patients With Advanced Solid Tumours | Phase 1 / Phase 2 | terminated | Feb 6, 2023 | NuCana plc | The NuTide:303 study was terminated at NuCana's discretion following refinement of the NUC-3373… | Sponsor / business decision |
| NCT06022757 | Study of XNW5004 Tablet in Combination With KEYTRUDA® (Pembrolizumab) in Subjects With… | Phase 1 / Phase 2 | terminated | Sep 5, 2023 | Evopoint Biosciences Inc. | Strategic decision by Sponsor. | Sponsor / business decision |
| NCT06586658 | Anti-CD70-CAR-T Cell Injection for the Treatment of Locally Advanced or… | Early Phase 1 | suspended | Sep 19, 2024 | Shanghai Changzheng Hospital | Modifications to the trial design | Other (stated, no rule matched) |
| NCT05689021 | CJNJ-67652000 and Prednisone for Treatment of Metastatic Castration-Resistant Prostate… | Phase 2 | terminated | Jan 18, 2023 | Mayo Clinic | Sponsor decided to close due to slow accrual and lack of efficacy | Efficacy / futility |
| NCT00707473 | Docetaxel, Cisplatin and Fluorouracil in Treating Patients With Previously Untreated… | Phase 2 | terminated | Jun 30, 2008 | M.D. Anderson Cancer Center | \<75% participation | Other (stated, no rule matched) |
| NCT06528093 | A Study to Find a Suitable Dose of BI 765883 and to Test Whether it Helps People With… | Phase 1 | terminated | Jul 30, 2024 | Boehringer Ingelheim | not stated | Not stated |
| NCT06538389 | High Cannabidiol Plant Extract (BRC-001) to Improve Aromatase Inhibitor-Induced… | Phase 2 | suspended | Aug 5, 2024 | City of Hope Medical Center | Accrual goal met | Enrollment / accrual |
| NCT05451849 | A Phase 1/2 Trial of TC-510 In Patients With Advanced Mesothelin-Expressing Cancer | Phase 1 / Phase 2 | terminated | Jul 11, 2022 | TCR2 Therapeutics | No participants were enrolled in Phase 2 as Phase I was terminated early due to the lack of a clear… | Enrollment / accrual |
| NCT03114319 | Dose Finding Study of TNO155 in Adult Patients With Advanced Solid Tumors | Phase 1 | terminated | Apr 14, 2017 | Novartis Pharmaceuticals | Business reasons and not due to any safety concerns | Safety / toxicity |
| NCT04331067 | Neoadjuvant Nivolumab and Chemotherapy in Patients With Localized Triple-negative Breast… | Phase 1 / Phase 2 | terminated | Apr 2, 2020 | Washington University School of Medicine | BMS terminated the study | Other (stated, no rule matched) |
| NCT05705791 | Clinical Investigation Evaluating Safety and Efficacy of Selective Intra-arterial…(HOLMBRAVE) | N/A | terminated | Jan 31, 2023 | Gustave Roussy, Cancer Campus, Grand Paris | Toxicities | Safety / toxicity |
| NCT06585488 | A First-in-human Study of BGB-53038, a Pan-KRAS Inhibitor, Alone or in Combinations in… | Phase 1 | terminated | Sep 5, 2024 | BeOne Medicines | The Sponsor has made the decision to terminate this study due to the lack of promising efficacy,… | Efficacy / futility |
| NCT04216472 | Nab-paclitaxel and Alpelisib for the Treatment of Anthracycline Refractory Triple… | Phase 2 | terminated | Jan 2, 2020 | M.D. Anderson Cancer Center | \<75% participation | Other (stated, no rule matched) |
| NCT06466187 | A Study of SGN-MesoC2 in Advanced Solid Tumors | Phase 1 | terminated | Jun 20, 2024 | Seagen, a wholly owned subsidiary of Pfizer | The trial was terminated for strategic reasons. The decision was not based on any safety concerns | Safety / toxicity |
| NCT04809766 | Mesothelin-Specific T-Cells (FH-TCR-Tᴍsʟɴ) for the Treatment of Metastatic Pancreatic… | Phase 1 | terminated | Mar 22, 2021 | Fred Hutchinson Cancer Center | Study terminated due to end of funding. | Funding |
| NCT01871571 | Bevacizumab, Fluorouracil, Leucovorin Calcium, and Oxaliplatin Before Surgery in Treating… | Phase 2 | terminated | Jun 6, 2013 | University of Southern California | Insufficient Accrual | Enrollment / accrual |
| NCT04273555 | Monitoring Early Response to Targeted Therapy in Stage IV HER2+ Breast Cancer Patients… | Phase 1 / Phase 2 | withdrawn | Feb 18, 2020 | University of Alabama at Birmingham | Unable to recruit for this study. | Enrollment / accrual |
| NCT05967533 | The Immune Effects of Fermented Wheat Germ Nutritional Supplementation in Patients With… | Phase 1 | suspended | Aug 1, 2023 | University of California, Davis | For internal interim analysis | Efficacy / futility |
| NCT05101356 | A Cancer Vaccine (Labvax 3(22)-23) and GM-CSF Alone or in Combination With Pembrolizumab… | Phase 1 / Phase 2 | suspended | Nov 1, 2021 | University of California, Davis | Drugs unavailable | Other (stated, no rule matched) |
| NCT03139058 | Prevalence of Liver Fibrosis and Cirrhosis in Patients With Squamous Cell Carcinoma of…(fibr'HOM) | N/A | terminated | May 3, 2017 | Centre Hospitalier Universitaire, Amiens | Recruitment difficulties | Enrollment / accrual |
| NCT05050162 | Comparing Cisplatin Every Three Weeks to Cisplatin Weekly When Combined With Radiation… | Phase 2 / Phase 3 | suspended | Sep 20, 2021 | NRG Oncology | End of Initial Phase of Multi-phase protocol; closed for protocol specified analysis | Other (stated, no rule matched) |
| NCT07100925 | A Study of Tolododekin Alfa (ANK-101) in Renal Allograft Recipients With High Risk… | Phase 1 | withdrawn | Aug 3, 2025 | Ankyra Therapeutics, Inc | Strategic realignment | Sponsor / business decision |
| NCT07136493 | Circulating Tumor DNA Based Minimal Residual Disease Detection for Patients With… | N/A | withdrawn | Aug 22, 2025 | City of Hope Medical Center | Funding This study has been closed at City of Hope at the request of the Sponsor due to delays and… | Funding |
| NCT03630640 | Neoadjuvant and Adjuvant Nivolumab in HCC Patients Treated by Electroporation(NIVOLEP) | Phase 2 | terminated | Aug 15, 2018 | Assistance Publique - Hôpitaux de Paris | Because patient recruitment was affected by the COVID-19 pandemic, the study sponsor and funding… | COVID-19 / pandemic |
| NCT07216833 | Decitabine and Nivolumab in Participants With Recurrent/Metastatic Squamous Cell… | Phase 1 | withdrawn | Oct 15, 2025 | Case Comprehensive Cancer Center | PI leaving the institution | Other (stated, no rule matched) |
| NCT04975516 | Standard of Care Chemotherapy With or Without Stereotactic Body Radiation Therapy for… | Phase 2 | terminated | Jul 23, 2021 | Mayo Clinic | Low/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 Aug 17, 2026source: clinicaltrials