Skip Navigation LinksHome > Studies > IGIV study  

Intravenous Immune Globulin (IVIg) Study

This is an ongoing study closed to enrollment.

Intravenous Immune Globulin (IVIg) has been approved and used successfully for over 20 years to treat a variety of autoimmune and immunodeficient diseases. Since the late 1990s, there has been increasing evidence that immunotherapy targeting the amyloid beta (Aβ) peptide can be used to treat Alzheimer's disease (AD). Because it contains anti-amyloid antibodies IVIg is being investigated in a Phase III study as a treatment for Alzheimer's disease.

Two previous studies showed statistical improvement in cognition while reducing amyloid levels in the brain, thought to contribute to AD development. IVIg contains antibodies that bind to oligomeric and fibrillar beta amyloid. This provides a justification for studying IVIg as a means for passive immunotherapy of AD. Passive immunization might provide a successful alternative to active amyloid vaccination for the treatment of AD.

The Phase III double-blind, placebo-controlled study, called GAP (Gammaglobulin Alzheimer's Partnership) Study is further examining the safety, effectiveness and tolerability of IVIg in mild to moderate AD patients. GAP is recruiting 360 participants at approximately 38 sites nationwide. The study will last a maximum of 82 weeks. Two-thirds of participants will receive IVIg and one-third will get placebo. Sites are looking for study volunteers who fit the following criteria:

  • Male or female, 50-89 years old
  • Have been diagnosed with probable mild to moderate Alzheimer's disease.
  • Have a study partner (spouse, child, sibling or friend) in contact with the participant 10 hours/week or more
  • Good venous access for repeated infusion and blood draws
  • Fluent in English or Spanish
  • In good general health


  • Any other forms of dementia
  • Medical issues that might increase the risk of treatment with IVIg, 10%, such as:
    • Significant problems with blood pressure, heart disease, clotting disorders, strokes or recent heart attacks
    • Evidence of current bleeding in the brain by MRI
    • Serious problems with the liver or kidneys
    • Allergies to blood products
  • Medical issues that might interfere with the evaluation of the treatment of dementia or might make dementia worse, such as:
    • Diabetes
    • Recent treatment with chemotherapy or immune suppression
    • The recent use of other investigational drugs, especially antibody therapy for AD
    • Severe headaches or psychiatric problems
  • Chronic use of non-steroidal anti-inflammatory drugs (NSAIDs) more than 3 times weekly (with the exception of aspirin daily), or currently receiving or has received any immunomodulating therapies within 3 months prior to screening
  • Currently receiving or has received IVIg treatment within five years prior to screening
  • Currently receiving or has received any investigational biologic(s) (e.g. active immunization or passive immunotherapies with monoclonal or polyclonal antibodies) for AD at any time, or any investigational drug(s) for AD within 3 months prior to screening
  • Current or recent (within 3 months prior to screening) participation in any other investigational drug or device studies.
  • Taking immunosuppressive drugs

Participants will be tested at research sites and if they qualify will be treated intravenously every two weeks for 18 months (70 weeks). The first three infusions will occur at the research site. If they are well tolerated successive infusions may be done by a healthcare professional at the participants' homes or other appropriate locations.

To learn how to participate in the study, contact NIA's Alzheimer's Disease Education and Referral (ADEAR) Center at 1-800-438-4380 or by email to To view a list of the research sites or for information on dementia and aging, go to

Click here for more information

Click here for more information


You can sort the Site name, City or Phone number by click one of the column titles.

SiteLocationTelephone #
Banner Alzheimer InstitutePhoenix, Arizona602-839-6900
Banner Sun Health Research InstituteSun City, Arizona623-875-6522
Bronson Lakeview PsychiatryKalamazoo, Michigan269-341-8774
Cleveland Clinic Lou Ruvo Center for Brain HealthLas Vegas, Nevada702-483-6025    
Columbia UniversityNew York, New York212-305-7661
Georgetown UniversityWashington, District of Columbia202-687-8800
Mayo Clinic, RochesterRochester, Minnesota507-284-7906
Medical University South CarolinaCharleston, South Carolina843-740-1592
Mount Sinai School of MedicineNew York, New York212-241-1514
Neurological Care of CNYSyracuse, New York315-701-4554
New York UniversityNew York, New York212-263-5845
Oregon Health & Science UniversityPortland, Oregon503-494-7615
Psychiatric ConsultantsNashville, Tennessee615-807-4023
Rhode Island HospitalProvidence, Rhode Island401-444-1743
St. Louis UniversitySt. Louis, Missouri314-977-4818
Synergy Clinical Research CenterNational City, California619-327-0155
Tulsa Clinical ResearchTulsa, Oklahoma918-743-2349
University Hospitals Case Medical CenterCleveland, Ohio216-464-6412
University of Alabama at BirminghamBirmingham, Alabama205-934-6223
University of Arizona Health Sciences CenterTucson, Arizona520-626-4296
University of California, Irvine - Alzheimer’s Disease Research Center Irvine, California949-824-3250
University of California, Irvine (BIC) Orange, California714-456-7994
University of California, San Diego – Alzheimer’s Clinical CenterLa Jolla, California858-246-1305
University of Iowa Memory Disorders ClinicIowa City, Iowa319-353-5158
University of Kansas Alzheimer & Memory ProgramKansas City, Kansas913-588-0555
University of KentuckyLexington, Kentuckey859-257-1412 ext 234
University of Nebraska Medical CenterOmaha, Nebraska402-552-6005
University of PennsylvaniaPhiladelphia, Pennsylvania 215-615-3084
University of South FloridaTampa, Florida813-974-4355
University of Southern CaliforniaLos Angeles, California323-442-7600
University of Texas SouthwesternDallas, Texas214-648-0255
University of UtahSalt Lake City, Utah801-587-8385
University of WisconsinMadison, Wisconsin 1-866-MEM-PROG
Weill Cornell Memory Disorders ProgramNew York, New York212-746-6581
Wien Center for Clinical ResearchMiami, Florida305-674-2424
Yale University Alzheimer’s Disease Research UnitNew Haven, Connecticut203-764-8100


SiteLocationTelephone #
Parkwood HospitalLondon, Ontario519-685-4292 ext 42567
Toronto Memory ProgramToronto, Ontario416-386-9761 ext 364