A Study to Evaluate Albumin and Immunoglobulin in Alzheimer's Disease
AMBAR
A Multicenter, Randomized, Controlled Study To Evaluate The Efficacy and Safety of Short-Term Plasma Exchange Followed by Long-Term Plasmapheresis With Infusion of Human Albumin Combined With Intravenous Immunoglobulin In Patients With Mild-Moderate Alzheimer's Disease
1 other identifier
interventional
347
2 countries
40
Brief Summary
The purpose of this study is to evaluate the changes in the cognitive, functional, behavioral and global domains based on the different applicable psychometric batteries and scales.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for phase_2
Started Apr 2012
Longer than P75 for phase_2
40 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
March 16, 2012
CompletedFirst Posted
Study publicly available on registry
March 22, 2012
CompletedStudy Start
First participant enrolled
April 19, 2012
CompletedPrimary Completion
Last participant's last visit for primary outcome
March 6, 2018
CompletedStudy Completion
Last participant's last visit for all outcomes
March 6, 2018
CompletedResults Posted
Study results publicly available
July 31, 2019
CompletedJuly 31, 2019
July 1, 2019
5.9 years
March 16, 2012
May 13, 2019
July 10, 2019
Conditions
Keywords
Outcome Measures
Primary Outcomes (2)
Alzheimer's Disease Assessment Scale - Cognitive Subscale (ADAS-Cog) Total Score (Changes From Baseline to 14 Months)
ADAS-Cog total score as a change from baseline to 14 months The ADAS-Cog Scale is a questionnaire that assesses cognitive performance in 12 different domains. The domains are: word recall, commands, constructional praxis, delayed word-recall task, naming objects/figures, ideational praxis, orientation, word recognition, remembering test instructions, comprehension, word finding difficulty, and spoken language ability. The total score ranges from 0-80 where a higher score indicates more cognitive impairment.
Baseline and 14 months
Alzheimer's Disease Cooperative Study-Activities of Daily Living (ADCS-ADL) Total Score (Changes From Baseline to 14 Months)
ADCS-ADL total score as a change from baseline to 14 months The ADCS-ADL comprises 23 questions covering a wide array of activities of daily living. Many of the activities begin with an assessment of whether that activity is relevant and then, if yes, follow with an assessment of the difficulty. The total score over all activities ranges from 0-78 where a higher score indicates more autonomy (better outcome).
Baseline and 14 Months
Other Outcomes (4)
ADAS-Cog Total Score (Changes From Baseline to 14 Months) in Patients With Baseline MMSE:22-26
Baseline and 14 months
ADCS-ADL Total Score (Changes From Baseline to 14 Months) in Patients With Baseline MMSE:22-26
Baseline and 14 months
ADAS-Cog Total Score (Changes From Baseline to 14 Months) in Patients With Baseline MMSE:18-21
Baseline and 14 months
- +1 more other outcomes
Study Arms (4)
High Albumin + Immunoglobulin
EXPERIMENTALTherapeutic plasma exchange with albumin 5% (intensive treatment period) + Low volume plasma exchange with high dose of albumin 20% or immunoglobulin 5% (maintenance treatment period)
Low Albumin + Immunoglobulin
EXPERIMENTALTherapeutic plasma exchange with albumin 5% (intensive treatment period) + Low volume plasma exchange with low dose of albumin 20% or immunoglobulin 5% (maintenance treatment period)
Low Albumin
EXPERIMENTALTherapeutic plasma exchange with albumin 5% (intensive treatment period) + Low volume plasma exchange with low dose of albumin 20% (maintenance treatment period)
Control (sham) group
NO INTERVENTIONSimulated plasma exchange procedure
Interventions
Therapeutic plasma exchange with human albumin 5%
Low volume plasma exchange with human albumin 5%
Intravenous human immunoglobulin 5%
Eligibility Criteria
You may qualify if:
- Males or females between 55-85 years of age at the time of signing of the informed consent document.
- A diagnosis of Alzheimer's disease (NINCDS-ADRDA criterion), and mini-mental status examination (MMSE) score between \>/=18 and \</=26.
- Current stable treatment with acetylcholine esterase inhibitors (AChEIs) and/or memantine for the previous three months.
- The patient and a close relative or the legal representative must read the patient information sheet, agree to participation in the trial, and then sign the informed consent document (the patient personally and the close relative/legal representative).
- The patient must be able to follow the study protocol, receive the treatment in the established time period, and continue during the follow-up interval.
- A brain computed axial tomography (CAT) or magnetic resonance imaging (MRI) study, obtained in the 12 months prior to recruitment, showing the absence of cerebrovascular disease, should be available. Nevertheless, it is mandatory to use the MRI obtained during the screening period to rule out any cerebrovascular disease.
- A stable care taker must be available, and must attend the patient study visits.
You may not qualify if:
- Any contraindication for plasma exchange due to behavioral disorders or abnormal coagulation parameters, such as for example:
- Hypocalcemia (Ca++ \< 8.7 mg/dL)
- Thrombocytopenia (\<100,000/µL)
- Fibrinogen \<1.5 g/L
- Prothrombin time (Quick) p\<60% versus control (international normalized ratio (INR) \>1.5)
- Beta-blocker treatment and bradycardia \<55/min
- Treatment with angiotension-converting enzyme inhibitors (ACEIs) (increased risk of allergic reactions)
- Hemoglobin \< 10 g/dL
- Difficult venous access precluding plasma exchange.
- A history of frequent adverse reactions (serious or otherwise) to blood products.
- Hypersensitivity to albumin or allergies to any of the components of Albutein.
- History of immunoglobulin A (IgA) deficiency.
- Known allergies to Flebogamma DIF components such as sorbitol.
- History of thromboembolic complications of intravenous immunoglobulins.
- Plasma creatinine \> 2 mg/dl.
- +8 more criteria
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- Instituto Grifols, S.A.lead
- Grifols Biologicals, LLCcollaborator
Study Sites (40)
Northern California Research
Sacramento, California, 95821, United States
Mountain View Clinical Research, Inc
Denver, Colorado, 80209, United States
Howard University
Washington D.C., District of Columbia, 20059, United States
Bradenton Research Center, Inc.
Bradenton, Florida, 34205, United States
Quantum Laboratories
Deerfield Beach, Florida, 33064, United States
Galiz Research, LLC
Hialeah, Florida, 33016, United States
Largo Medical Center
Largo, Florida, 33770, United States
L&L Research Choices, Inc
Miami, Florida, 33144, United States
Allied Biomedical Research Institute
Miami, Florida, 33155, United States
Miami Dade Medical Research Institute, LLC
Miami, Florida, 33176, United States
Neurology Associates of Osmond Beach
Ormond Beach, Florida, 32174, United States
PharmaSeek LLC (DMI Research)
Pinellas Park, Florida, 33782, United States
iResearch Atlanta, LLC
Decatur, Georgia, 30030, United States
RTR Medical Group
Savannah, Georgia, 31419, United States
Dartmouth-Hitchcock Medical Center
Lebanon, New Hampshire, 03756, United States
The NeuroCognitive Institute
Mount Arlington, New Jersey, 08756, United States
Mid-Atlantic Geriatric/ARC
Paterson, New Jersey, 08759, United States
The Cleveland Clinic Foundation
Cleveland, Ohio, 44195, United States
Neurology Specialists Inc
Dayton, Ohio, 45417, United States
University of Pittsburgh Medical Center
Pittsburgh, Pennsylvania, 15213, United States
Roper St. Francis Healthcare
Charleston, South Carolina, 29401, United States
Wesley Neurology Clinic
Cordova, Tennessee, 38018, United States
Hospital General de Elche
Elche, Alicante, 03203, Spain
Hospital Universitario del Vinalopó
Elche, Alicante, 03293, Spain
Hospital Universitari de Bellvitge
L'Hospitalet de Llobregat, Barcelona, 08907, Spain
Hospital General de Catalunya
Sant Cugat del Vallès, Barcelona, 08190, Spain
Hospital Universitari Mútua de Terrassa
Terrassa, Barcelona, 08221, Spain
Hospital Universitario Nuestra Señora de Candelaria
Santa Cruz de Tenerife, Canary Islands, 38010, Spain
Hospital Universitario de Getafe
Getafe, Madrid, 28905, Spain
Fundació ACE
Barcelona, 08028, Spain
Hospital Vall d'Hebrón
Barcelona, 08035, Spain
Hospital de la Santa Creu i Sant Pau
Barcelona, 08041, Spain
Hospital Universitario de Burgos
Burgos, 09005, Spain
Parc Hospitalari Martí i Julià
Girona, 17190, Spain
Hospital Universitari de Santa Maria
Lleida, 25198, Spain
Hospital General Universitario Gregorio Marañón
Madrid, 28007, Spain
Hospital Clínico San Carlos
Madrid, 28040, Spain
Hospital Universitario Doctor Peset
Valencia, 46017, Spain
Hospital Universitario y Politécnico La Fe
Valencia, 46026, Spain
Hospital Viamed Montecanal
Zaragoza, 50012, Spain
Related Publications (2)
Podger L, Stewart WF, Serrano D, Lipton RB, Gomez-Ulloa D, Ayasse ND, Barnes FB, Davis EA, Runken MC. Application of a Novel Endpoint Staging Framework: Proof of Concept in the AMBAR Study. J Alzheimers Dis. 2024;98(3):1079-1094. doi: 10.3233/JAD-231197.
PMID: 38489186DERIVEDCuberas-Borros G, Roca I, Castell-Conesa J, Nunez L, Boada M, Lopez OL, Grifols C, Barcelo M, Pareto D, Paez A. Neuroimaging analyses from a randomized, controlled study to evaluate plasma exchange with albumin replacement in mild-to-moderate Alzheimer's disease: additional results from the AMBAR study. Eur J Nucl Med Mol Imaging. 2022 Nov;49(13):4589-4600. doi: 10.1007/s00259-022-05915-5. Epub 2022 Jul 22.
PMID: 35867135DERIVED
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Results Point of Contact
- Title
- AMBAR clinical manager
- Organization
- Grifols
Study Officials
- PRINCIPAL INVESTIGATOR
Merce Boada Rovira, MD, PhD
Fundació ACE. Barcelona. Spain
- STUDY CHAIR
Antonio Páez, MD
Instituto Grifols, S.A.
- STUDY DIRECTOR
Laura Núñez, BSc
Instituto Grifols, S.A.
Publication Agreements
- PI is Sponsor Employee
- No
- Restriction Type
- OTHER
- Restrictive Agreement
- Yes
Study Design
- Study Type
- interventional
- Phase
- phase 2
- Allocation
- RANDOMIZED
- Masking
- TRIPLE
- Who Masked
- PARTICIPANT, CARE PROVIDER, OUTCOMES ASSESSOR
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
March 16, 2012
First Posted
March 22, 2012
Study Start
April 19, 2012
Primary Completion
March 6, 2018
Study Completion
March 6, 2018
Last Updated
July 31, 2019
Results First Posted
July 31, 2019
Record last verified: 2019-07