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University of Colorado, Denver clinical trial failures
Review 70 stopped clinical trials from University of Colorado, Denver, including disease areas, phases, and classified stop reasons.
This page groups real ClinicalTrials.gov-derived stopped trial records. The strongest added signal is the stop-reason classification: 0 of these records are likely biological failure signals, while the rest may reflect operational, strategic, regulatory, funding, enrollment, or unclear stop reasons.
Dominant stop reasons
- OPERATIONAL
- 43
- OTHER/UNKNOWN
- 26
- REGULATORY
- 1
Notable sponsors
- University of Colorado, Denver
- 70
Related phases
- Phase II
- 24
- Phase IV
- 13
- Phase I
- 12
- Unknown
- 12
- Phase III
- 6
Crawlable stopped-trial records
Open ExploreShowing up to 70 representative records from this slice. Each link opens the trial detail page with source attribution and stop-reason context.
Phase IV Oligometastatic Disease trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
Low Accrual
Phase III Diabetic Kidney Disease trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
Funding not available
Phase IV Posttraumatic Stress Disorder trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
COVID recruitment issues
Phase II Down Syndrome trial by University of Colorado, Denver. Stop reason: OTHER/UNKNOWN.
Difficulties enrolling participants due to study design
Unknown Pediatric Neurosurgical Tumors trial by University of Colorado, Denver. Stop reason: OTHER/UNKNOWN.
Study cancelled by PI.
Phase I Colorectal Cancer trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
PI left the institution
Phase II Sudden Sensorineural Hearing Loss (SSNHL) trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
On hold due to COVID-19 outbreak
Phase I Acute Myeloid Leukemia trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
Low enrollment, University Scientific Review Committee required study closure.
Phase IV HIV/AIDS trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
Insufficient enrollment
Phase II Gram-Positive Bacterial Infections trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
Delays in recruitment due to COVID-19 and higher than acceptable loss to followup.
Phase IV Multiple Sclerosis trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
Sponsor requested
Phase IV Alcohol Use Disorder trial by University of Colorado, Denver. Stop reason: OTHER/UNKNOWN.
no longer randomized, drug being offered to all patients
Early Phase I Colitis, Ulcerative trial by University of Colorado, Denver. Stop reason: OTHER/UNKNOWN.
inability to enroll
Phase II Colorectal Disorders trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
No Accrual. PI left Institution
Phase II Triple Negative Breast Cancer trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
Low Accrual
Phase II Brain Metastases trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
Low accrual
Phase II Diffuse Large B Cell Lymphoma trial by University of Colorado, Denver. Stop reason: OTHER/UNKNOWN.
Lack of sufficient patient population
Phase I Severe Motility Disorder trial by University of Colorado, Denver. Stop reason: OTHER/UNKNOWN.
Source of FMT preps is no longer able to provide us with necessary preps.
Phase II Microsatellite Instability High trial by University of Colorado, Denver. Stop reason: OTHER/UNKNOWN.
PI has decided to withdraw the study
Unknown IUGR trial by University of Colorado, Denver. Stop reason: OTHER/UNKNOWN.
No stop-reason text available in the compact dataset.
Unknown Hypertension trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
Study was terminated due to the change in funding.
Phase III Hepatitis C trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
Study stopped due to low accrual and availability of other treatment options
Phase I Idiopathic Pulmonary Fibrosis (IPF) trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
The study encountered challenges during startup due to the COVID-19 epidemic and was withdrawn.
Unknown Liver Transplantation trial by University of Colorado, Denver. Stop reason: OTHER/UNKNOWN.
This study was terminated when the P.I. left the university.
Phase III Infantile Spasm trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
Study on enrollment hold as a precaution per the pharmaceutical company.
Unknown Radiation Necrosis trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
Poor accrual
Phase III Fever trial by University of Colorado, Denver. Stop reason: OTHER/UNKNOWN.
Insufficient data to answer the study question
Phase II COVID-19 trial by University of Colorado, Denver. Stop reason: OTHER/UNKNOWN.
Could not make FDA required changes
Phase II COVID-19 trial by University of Colorado, Denver. Stop reason: OTHER/UNKNOWN.
Could not make FDA required changes
Phase IV Persistence of Varicella Immunity trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
Unforeseen reduction of recruitment resource.
Unknown Pain trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
Insufficient number of participants recruited
Early Phase I Kidney Transplant Rejection trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
Discontinuation of study due to site staffing and resources available to conduct the study
Phase II COVID-19 trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
Funding not received
Early Phase I Kidney Transplant Rejection trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
Slower than expected recruitment rate
Phase II Pancreatic Cancer trial by University of Colorado, Denver. Stop reason: OTHER/UNKNOWN.
Cancelled by PI
Phase I Schizophrenia trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
Funding not secured. IRB approval has been withdrawn as of January 2017.
Phase II Post Traumatic Stress Disorder trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
Enrollment challenges - Single participant discontinued after placebo, no relevant outcome measure data was recorded.
Unknown Bronchiolitis trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
Lack of financial support
Phase IV Headache trial by University of Colorado, Denver. Stop reason: OTHER/UNKNOWN.
Decided to participate in a multicenter trial researching the same issue
Phase IV Trigeminal Neuralgia trial by University of Colorado, Denver. Stop reason: OTHER/UNKNOWN.
Resource and time constraints were encountered by product manufacturer and study team.
Unknown Lumbar Puncture trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
Due to low recruitment numbers, the study was terminated.
Phase II Type I Diabetes trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
funding loss, no data was ever collected
Phase I Contraception trial by University of Colorado, Denver. Stop reason: REGULATORY.
IND approval from FDA was rejected and IRB approval was never granted.
Phase II Persistent Pulmonary Hypertension trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
This trial was terminated early due to lack of recruitment.
Unknown Femoroacetabular Impingement trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
PI left
Phase I Solid Tumor, Adult trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
Contract Issues
Phase IV Clostridium Difficile Infection trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
Lost funding
Phase III Deep Vein Thrombosis trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
Did not receive NIH Funding
Phase I Diabetes Mellitus trial by University of Colorado, Denver. Stop reason: OTHER/UNKNOWN.
No stop-reason text available in the compact dataset.
Phase IV Hypertension trial by University of Colorado, Denver. Stop reason: OTHER/UNKNOWN.
Study was stopped early due to difficulty finding patients who met I/E criteria.
Phase II Prostate Cancer trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
Low accrual
Phase IV Alcohol Withdrawal trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
Funding not obtained
Phase IV Obesity trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
Lack of funding
Phase II Heroin Dependence trial by University of Colorado, Denver. Stop reason: OTHER/UNKNOWN.
No stop-reason text available in the compact dataset.
Phase II Heroin Dependence trial by University of Colorado, Denver. Stop reason: OTHER/UNKNOWN.
No stop-reason text available in the compact dataset.
Phase II Heroin Dependence trial by University of Colorado, Denver. Stop reason: OTHER/UNKNOWN.
No stop-reason text available in the compact dataset.
Phase II Heroin Dependence trial by University of Colorado, Denver. Stop reason: OTHER/UNKNOWN.
No stop-reason text available in the compact dataset.
Phase II Heroin Dependence trial by University of Colorado, Denver. Stop reason: OTHER/UNKNOWN.
No stop-reason text available in the compact dataset.
Phase II Heroin Dependence trial by University of Colorado, Denver. Stop reason: OTHER/UNKNOWN.
No stop-reason text available in the compact dataset.
Phase III Altitude Sickness trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
Stopped prior to enrollment per PI and DSMB decision.
Unknown Contraception trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
Unable to recruit participants
Phase I Schizophrenia trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
PI left institution
Unknown Open Angle Glaucoma trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
insufficient enrollment
Unknown Post-operative Pain trial by University of Colorado, Denver. Stop reason: OTHER/UNKNOWN.
lack of patients
Phase I Autism trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
difficult to find participants and no funding
Phase II Prostate Cancer trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
Low recruitment
Phase IV Thermal Hyperalgesia trial by University of Colorado, Denver. Stop reason: OTHER/UNKNOWN.
Standard of care for dressing changes at the institution now includes treatment intervention
Phase I Schizophrenia trial by University of Colorado, Denver. Stop reason: OTHER/UNKNOWN.
Unable to find subjects with schizophrenia that were using only cannabis
Phase I Plasma Cell Myeloma trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
Principle investigator left the institution
Phase II Refractory Plasma Cell Myeloma trial by University of Colorado, Denver. Stop reason: OPERATIONAL.
Principle investigator left the institution