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TerminatedPhase 2

Safety and Tolerability Study Evaluating a New Treatment for Subjects With Mild to Moderate Alzheimer's Disease

Long-Term Safety and Tolerability of ABT-126 in Adults With Mild-to-Moderate Alzheimer's Disease on Stable Doses of Acetylcholinesterase Inhibitors: An Open-Label Extension Study for Subjects Completing Study M11-793

Asset

ABT-126

Listed sites

39

Recruiting sites

-

Enrollment

343

actual

Study population

Alzheimer’s disease

Key I/E criteria

mild-to-moderate ADStudy partner/caregiver required

Primary endpoints

Adverse EventsLaboratory DataVital Signs

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

Eudract number2012-000537-39
Org study IDM11-428
NCT IDNCT01690195

Timeline

Milestones

Study start2012-09 (month precision)
Study first posted2012-09-21estimated
Primary completion2014-02actual (month precision)
Study completion2014-02actual (month precision)
Last update posted2021-08-02actual

Assets

Drug assets

Study populations

Who this study enrolls

Alzheimer’s disease

Eligibility

Who can enroll

Minimum age55 Years
Maximum age90 Years
SexAll
Healthy volunteersNot accepted

Inclusion criteria

The subject and caregiver must voluntarily sign and date an informed consent. If the subject does not have the capacity to provide informed consent, full informed consent must be obtained from the subject's representative and assent must be obtained from the subject.
The subject was randomized into Study M11-793 and completed dosing through Week 24 in that study.
With the exception of a diagnosis of mild to moderate AD and the presence of stable medical conditions, the subject is in general good health, based upon the results of medical history, physical examination, vital signs, laboratory profile, and a 12-lead ECG.
If male, the subject is surgically sterile (vasectomy, is sexually inactive, or is using a barrier method of birth control (condom) with spermicidal foam/gel/film/cream/suppository for the duration of the study and for 30 days following the last dose of study drug. However, if the male subject's partner has been postmenopausal for at least two years or is surgically sterile, then use of a barrier method of birth control is not required.
The subject has an identified, reliable caregiver who will provide support and ensure compliance with the study medication and procedures, and provide accurate information about the subject's status during the study.
The subject and caregiver must have sufficient visual, hearing and graphomotor skills to complete the study procedures

Exclusion criteria

The subject experienced an adverse event or abnormal finding in physical examination, vital signs, laboratory profile and/or ECG measurements in Study M11-793 that indicates the subject could become medically unstable during the current study.
The subject is currently taking or is expected to be prescribed any excluded medications without the approval of Abbott medical monitor.
The subject was noncompliant with donepezil or rivastigmine during Study M11-793 or is expected to discontinue these medications prior to conclusion of this study.
The subject anticipates a move outside the geographic area of the investigative site or is planning extended travel inconsistent with the recommended visit intervals.
The subject is currently enrolled in, or plans to participate in, another experimental study during the course of this trial.
The subject developed any significant medical or psychiatric condition that, in the opinion of the investigator, renders the subject an unsuitable candidate to participate in this study.
For any other reason the investigator considers the subject to be an unsuitable candidate to receive ABT-126 or to participate in this study.

Endpoints (9)

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

Behavior / neuropsychiatric
3
Safety / tolerability / PK
3
Other (unclassified)
3

Behavior / neuropsychiatric

3 endpoints
Primary/protocol endpoint

Brief Psychiatric assessments

Time frame:Assessments up through 28 weeks

descriptive

Primary/protocol endpoint

Columbia-Suicide Severity Rating Scale

Time frame:Assessments up through 28 weeks

descriptive

Primary/protocol endpoint

Cornell Scale for Depression in Dementia

Time frame:Assessments up through 28 weeks

descriptive

Safety / tolerability / PK

3 endpoints
Primary/protocol endpoint

Adverse Events

Time frame:Assessments up through 28 weeks

event count, event

Primary/protocol endpoint

Vital Signs

Time frame:Assessments up through 28 weeks

descriptive

Primary/protocol endpoint

Electrocardiogram

Time frame:Assessments up through 28 weeks

ratio, event

Other (unclassified)

3 endpoints
Primary/protocol endpoint/low confidence

Laboratory Data

Time frame:Assessments up through 28 weeks

descriptive

Primary/protocol endpoint/low confidence

Physical examinations

Time frame:Assessments up through 28 weeks

descriptive

Primary/protocol endpoint/low confidence

Brief Neurological examination

Time frame:Assessments up through 28 weeks

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.