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TerminatedPhase 2

Mifepristone as Adjunctive Therapy in Alzheimer's Disease

A Double-blind, Placebo-controlled Trial of the Safety and Efficacy of C-1073 (Mifepristone) as Adjunctive Therapy in Alzheimer's Disease

Asset

Mifepristone

Listed sites

21

Recruiting sites

-

Enrollment

160

Study population

Alzheimer’s disease

Key I/E criteria

Alzheimer's diseaseAD symptomatic therapy: stable ≥12 weeks

Primary endpoint

Effects on cognition

Footprint

Where this trial recruits

Site locations as reported to ClinicalTrials.gov. Site count is not enrollment count; per-site enrollment is not available from source.

Identifiers

Registered as

Org study IDIA0069
NCT IDNCT00105105

Timeline

Milestones

Study start2003-04 (month precision)
Study first posted2005-03-07estimated
Primary completion2005-11actual (month precision)
Study completion2005-11actual (month precision)
Last update posted2009-12-11estimated

Assets

Drug assets

Study populations

Who this study enrolls

Alzheimer’s disease

Eligibility

Who can enroll

SexAll
Healthy volunteersNot accepted

Inclusion criteria

Diagnosis of Alzheimer's disease
Women must have had a partial or complete hysterectomy
Mini Mental Status Evaluation score of 18-27
HAM-D score less than or equal to 18
Able to provide written informed consent
On a stable dose of an acetylcholinesterase inhibitor for at least 12 weeks prior to screening visit
Ambulatory, or ambulatory with walker or cane
Sufficient hearing and vision to enable the patient to comply with the study procedures
Caregiver available to participate in the assessment of the patient and monitor dosing

Exclusion criteria

Women with an intact uterus
A clinically significant medical condition, including lab abnormality, which in the opinion of the investigator would place the patient at undue risk, or would impair the patient's ability to participate in the study. These include but are not limited to: history of cerebral vascular accident (CVA), adrenal insufficiency, porphyrias, autoimmune disorders, type I diabetes, chronic obstructive pulmonary disease (COPD), hematologic or oncologic disorders in the previous 2 years, vitamin B12 or folate deficiency
A clinically significant active gastrointestinal, renal, hepatic, endocrine, or cardiovascular system disease that is not well controlled by diet, pharmacological treatment, or other therapeutic intervention
History of psychotic episodes or bipolar disorder, or additional diagnosis of delusions, delerium, or depression
Evidence of other psychiatric or neurologic disorders (e.g., stroke, schizophrenia, or Parkinson disease)
Hachinski ischemia score of 5 or more
Known hypersensitivity to cholinesterase inhibitors
Use of systemic or pulmonary inhaled corticosteroids within the 30 days prior to randomization, or require use of these medications during the study
Use of memantine (Namenda) within the 30 days prior to randomization, or require use of this medication during the study
Currently taking medications known to significantly induce or inhibit the metabolism of CYP 3A4, or have taken these medications 7 days prior to randomization (see list below under prohibited medications)
Use of anticholinergic compounds within the 30 days prior to randomization, or require use of this medication during the study
History of electroconvulsive therapy (ECT); patients may not undergo ECT during the course of the trial
Positive urine drug screen for any non-prescribed drug of abuse (including but not limited to amphetamines, cannabinoids, barbiturates, cocaine, opiates, benzodiazepines)
History of illicit drugs usage or a history of drug or alcohol dependence
Known to have another form of dementia that may also explain the patient's deficits including reversible dementias, Binswanger's, Parkinson's dementia complex, Korsakoff's, mental retardation or vascular dementia. Patients who meet clinical criteria for AD but who have deep white matter lesions on MRI or CT scan will be accepted.
Currently taking prescription anticoagulants such as warfarin (Coumadin)
Planned surgical procedures during the study period, including the 4 week off drug period between weeks 16 and 20
Participation in a clinical investigation of any drug, or other biological or investigational therapy within 30 days prior to dosing
Previous participation in a trial using mifepristone, or known sensitivity or allergy to C-1073 (mifepristone) or its constituents
Body Mass Index (BMI) over 35

Prohibited Medications:

Medications known to significantly induce or inhibit the metabolism of CYP 3A4, specifically:

carbamazepine (Carbatrol® Tegretol®)
modafinil (Provigil®)
nefazodone (Serzone®)
droperidol
erythromycin
fluconazole (Diflucan®)
itraconazole (Sporanox®)
ketoconazole (Nizoral®)
simvastatin (Zocor®)
lovastatin (Mevacor®)
vinblastine
vincristine
paclitaxel (Taxol®)
tamoxifen (Nolvadex®)
cyclosporine (Neoral®, Sandimmune®)
tacrolimus (Gengraf®)
sirolimus (Rapamune®)
midazolam (Versed®)
nicardipine (Cardene®)
nifedipine (Adalat®, Procardia®)
felodipine (Lexxel®, Plendil®)
thioridizine
pimozide (Orap®)
quinidine
Patient may also not take St. John's Wort during the study or within 7 days prior to study entry
the use of grapefruit juice will be excluded during the course of the study.
use of anticholinergic compounds over the past 30 days prior to randomization
warfarin (Coumadin)
all systemic and inhaled pulmonary corticosteroids
memantine (Namenda)

Endpoints (2)

What's being measured

Protocol endpoints and posted registry outcome measures, grouped into outcome categories. Composite endpoints show their component event types. Standard codes (LOINC, SNOMED CT) are shown where available.

Coverage by outcome category

Function / daily living
1
Other (unclassified)
1

Function / daily living

1 endpoint
Secondary/protocol endpoint

effects on behavior and activities of daily living

descriptive

Other (unclassified)

1 endpoint
Primary/protocol endpoint/low confidence

effects on cognition

descriptive

Publications (1)

Bibliography

Records linked to this trial through ClinicalTrials.gov references, PubMed NCT search, and curated study seeds. 'Canonical' marks design/result papers; others are registry references or candidates.

Provenance

Sources

Trial identity, design, statusClinicalTrials.gov API v2
Snapshot dateJuly 21, 2026
Endpoint classificationDelfa ADRD endpoint taxonomy
Results tableno registry results posted yet

Trial facts come from public ClinicalTrials.gov records. Endpoint categories are Delfa's classification of those records, not a ClinicalTrials.gov field. All figures reflect the July 21, 2026 snapshot.