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Alzheimer's DiseasePhase 1NCT01369225

Open Label Extension Study Evaluating Safety and Tolerability of AAB-003 (PF-05236812) in Subject With Mild to Moderate Alzheimer's Disease

A Phase 1 study testing AAB-003 (PF-05236812) in people with Alzheimer's Disease, run by Pfizer at 21 sites in 2 countries.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This is a study to evaluate the safety and tolerability of multiple doses of AAB-003 (PF-05236812) in patients with mild to moderate Alzheimer's Disease. Patients who complete study B2601001 may participate in this trial and receive AAB-003 (PF-05236812). Each patient's participation will last approximately 52 weeks. Read more about this study

Who is it for?
Ages 50 to 90 years
Conditions the study is for
Alzheimer's Disease
What is being tested?
AAB-003 (PF-05236812)
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
52 participants
Where
21 sitesin 2 countries
Study dates
Jul 2011to Aug 2014
Phase
Phase 1
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 50 to 90 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Successful completion of study B2601001
  • MMSE 12 or greater

Who cannot join

  • Study B2601001 Week 32 MRI with clinically important exclusionary findings.
  • Experienced SAE, vasogenic edema and/or intracranial hemorrhage in study B2601001

Trial locations and contacts

21 sites in 2 countries.

21 sites in 2 countries

United States15 sites
  • Atlanta Center for Medical Research

    Atlanta, Georgia, 30308

  • Foers Medical Arts Pharmacy

    Bethesda, Maryland, 20814

  • Millennium Psychiatric Associates, LLC

    Creve Coeur, Missouri, 63141

  • Memory Enhancement Center of America, Inc.

    Eatontown, New Jersey, 07724

  • MD Clinical

    Hallandale, Florida, 33009

  • Borgess Medical Center

    Kalamazoo, Michigan, 49048

  • Borgess Research Institute

    Kalamazoo, Michigan, 49048

  • KNI Southwest Michigan Imaging Center, LLC

    Kalamazoo, Michigan, 49048

  • Central Jersey Radiology

    Oakhurst, New Jersey, 07755

  • Munroe Regional Medical Center

    Ocala, Florida, 34471

  • Renstar Medical Research

    Ocala, Florida, 34471

  • Trinity Care Solutions

    Ocala, Florida, 34471

  • Advanced Imaging of Ocala

    Ocala, Florida, 34481

  • CBH Health, LLC

    Rockville, Maryland, 20850

  • DePaul Health Center-MRI Department

    St Louis, Missouri, 63044

Other trials in United States

South Korea6 sites
  • Inha University Hospital, Department of Neurology

    Incheon, 400-711

  • Seoul National University Hospital, Department Neurology

    Seongnam-si, Gyeonggi-do, 463-707

  • Samsung Medical Center, Department of Neurology

    Seoul, 1350710

  • Korea University Anam Hospital IRB

    Seoul, 136-705

  • ASAN Medical Center

    Seoul, 138-736

  • Konkuk University Medical Center, Department of Neurology

    Seoul, 143914

Other trials in South Korea

About this study

Official title: A Multicenter, Open-label Extension, Multiple Dose, Parallel Group Study To Investigate The Long-term Safety And Tolerability Of Aab-003 (Pf-05236812) Administered Intravenously In Subjects With Mild To Moderate Alzheimer's Disease Previously Treated With Aab-003 Or Placebo In Protocol B2601001

This is a study to evaluate the safety and tolerability of multiple doses of AAB-003 (PF-05236812) in patients with mild to moderate Alzheimer's Disease. Patients who complete study B2601001 may participate in this trial and receive AAB-003 (PF-05236812). Each patient's participation will last approximately 52 weeks.

Being tested
AAB-003 (PF-05236812)
Keywords
Randomized, Safety Study, Open Label
Medical subject headings
Alzheimer Disease

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • AAB-003 (PF-05236812)Drug

    0.5 mg/kg AAB-003, IV

  • AAB-003 (PF-05236812)Drug

    1 mg/kg AAB-003, IV

  • AAB-003 (PF-05236812)Drug

    2 mg/kg AAB-003, IV

  • AAB-003 (PF-05236812)Drug

    4 mg/kg AAB-003, IV

  • AAB-003 (PF-05236812)Drug

    8 mg/kg AAB-003, IV

Study groups in NCT01369225
Study groupRoleWhat they receive
0.5 mg/kg AAB-003ExperimentalNot described
Receives: Drug: AAB-003 (PF-05236812)
1 mg/kg AAB-003ExperimentalNot described
Receives: Drug: AAB-003 (PF-05236812)
2 mg/kg AAB-003ExperimentalNot described
Receives: Drug: AAB-003 (PF-05236812)
4 mg/kg AAB-003ExperimentalNot described
Receives: Drug: AAB-003 (PF-05236812)
8 mg/kg AAB-003ExperimentalNot described
Receives: Drug: AAB-003 (PF-05236812)

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Number of Participants With Treatment-Emergent Adverse Events (AEs) and Serious Adverse Events (SAEs)

    An AE was any untoward medical occurrence in a participant who received study drug. An SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. Treatment-emergent are events between first dose of study drug and up to 28 days after last dose that were absent before treatment or that worsened relative to pre-treatment state. AEs included both SAEs and non-SAEs.

    Measured: Baseline up to Week 52

  2. Number of Participants With Laboratory Abnormalities Meeting the Criteria for Potential Clinical Concern

    The following laboratory parameters were analyzed: hematology (hemoglobin, hematocrit, red blood cell [RBC] count, RBC morphology, platelet count, white blood cell [WBC] count, total neutrophils, eosinophils, monocytes, basophils, lymphocytes); blood chemistry (blood urea nitrogen [BUN], creatinine, glucose, calcium, sodium, potassium, chloride, total bicarbonate, aspartate aminotransferase [AST], alanine aminotransferase [ALT], total bilirubin, alkaline phosphatase, uric acid, albumin, and total protein; urinalysis (pH, glucose, protein, blood, ketones, nitrites, leukocyte esterase, microscopy [if urine dipstick was positive for blood, protein, nitrites or leukocyte esterase]); others (coagulation panel, circulating immune complex, and complement activation).

    Measured: Baseline up to Week 52

  3. Number of Participants With Potentially Clinically Important Vital Sign Findings

    Vital signs assessment included pulse rate and blood pressure. Criteria for vital sign values meeting potential clinical concern included: supine/sitting pulse rate <40 or >120 beats per minute (bpm); standing pulse rate <40 or >140 bpm; systolic blood pressure (SBP) of more than or equal to (>=)30 millimeters of mercury (mm Hg) change from baseline in same posture or SBP <90 mm Hg, diastolic blood pressure (DBP) >=20 mmHg change from baseline in same posture or DBP <50 mm Hg.

    Measured: Baseline up to Week 52

  4. Number of Participants With Potentially Clinically Important Electrocardiogram (ECG) Findings

    ECG parameters included PR interval, QRS interval, and QT interval. Criteria for ECG changes meeting potential clinical concern included: PR interval >=300 milliseconds (msec) or >=25% increase when baseline is >200 msec and >=50% increase when baseline is less than or equal to (<=)200 msec; QRS interval >=200 msec or >=50% increase from baseline when baseline is less than or equal to 100 msec and >=25% increase when baseline is >100 msec; and QTcF >=450 msec or >=30 msec increase.

    Measured: Baseline up to Week 52

  5. Number of Participants With Abnormal Physical Examination Findings

    A full physical examination consisted of an examination of the abdomen, genitourinary and cardiovascular systems, lungs, lymph nodes, mouth, musculoskeletal and neurological systems, skin, extremities, head, ears, eyes, nose, throat and thyroid gland. Criteria for abnormal physical findings was based on the investigator's discretion and any new physical examination findings were documented as AEs. Only sites with at least 1 participant abnormality are reported.

    Measured: Baseline up to Week 52

  6. Number of Participants With Abnormal Neurological Examination Findings

    Neurological examinations were done to the extent needed to assess the subject for any potential changes in neurological status, as determined by the investigator. Examinations included level of consciousness, speech, cranial nerves, motor, sensory, coordination, gait, and tendon reflexes. Only tests with at least 1 participant abnormality are reported.

    Measured: Baseline up to Week 52

  7. Number of Participants With Suicidal Ideation or Suicidal Behavior as Assessed by the Columbia-Suicide Severity Rating Scale (C-SSRS)

    The C-SSRS captures the occurrence, severity, and frequency of suicide-related thoughts and behaviors during the assessment period. C-SSRS assesses whether participant experienced the following: completed suicide; suicide attempt; preparatory acts towards imminent suicidal behavior; suicidal ideation; self-injurious behavior, no suicidal intent. The results presented are the number of participants with completed suicide or non-fatal suicide events or behaviors. Worsening of suicidal ideation was an increase in severity of suicidal ideation from baseline.

    Measured: Baseline up to Week 52

  8. Number of Participants With Any New Magnetic Resonance Imaging (MRI) Findings

    Brain MRIs were collected to assess for potential drug-related changes that might have constituted a safety concern. Findings suggestive of either vasogenic edema or intracranial hemorrhage were to be reported as AEs of special circumstance.

    Measured: Baseline up to Week 52

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted8 Jun 2011 (estimated)
  2. Study startJul 2011
  3. Primary completionAug 2014
  4. Study completionAug 2014

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Treatment
Allocation
Non-randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
52 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01369225
Sponsor's protocol ID
B2601003
Status last verified
Jan 2017
First submitted
10 May 2011
Last updated
10 Mar 2017
Data monitoring committee
No

Publications

  • Delnomdedieu M, Duvvuri S, Li DJ, Atassi N, Lu M, Brashear HR, Liu E, Ness S, Kupiec JW. First-In-Human safety and long-term exposure data for AAB-003 (PF-05236812) and biomarkers after intravenous infusions of escalating doses in patients with mild to moderate Alzheimer's disease. Alzheimers Res Ther. 2016 Mar 1;8(1):12. doi: 10.1186/s13195-016-0177-y.

    PubMed 26925577

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing AAB-003 (PF-05236812) in people with Alzheimer's Disease, run by Pfizer at 21 sites in 2 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 2 inclusion and 2 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 10 Mar 2017. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 21 sites in United States, South Korea. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 10 Mar 2017). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of Participants With Treatment-Emergent Adverse Events (AEs) and Serious Adverse Events (SAEs) (time frame: Baseline up to Week 52). The study lists 8 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT01369225, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 10 Mar 2017; AzTrials last refreshed its copy on 6 Nov 2026.

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