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ACC-001+ QS-21

Phase 2

Alzheimer Disease | Monoclonal antibody | Neurology |Pfizer, Inc.|Last Updated: Mar 25, 2021

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindCONTROLLEDDMC
Total Trials4
Total Enrollment446

FDA Designations

No designations recorded

Clinical trial landscape

ACC-001+ QS-21 · 4 trials · 1 indication

Phase 2 4
NCT00955409Long Term Extension Study Evaluating Safety, Tolerability and Immunogenicity Of ACC-001 In Subjects With Mild To Moderate Alzheimer's DiseaseAlzheimer Disease
COMPLETED160 Analytics
NCT00752232Study Evaluating ACC-001 in Japanese Patients With Mild To Moderate Alzheimer's DiseaseAlzheimer Disease
COMPLETED40 Analytics
NCT00498602Study Evaluating ACC-001 In Subjects With Mild To Moderate Alzheimer's DiseaseAlzheimer Disease
COMPLETED160 Analytics
NCT00479557Study Evaluating Safety, Tolerability, And Immunogenicity Of ACC-001 In Subjects With Mild To Moderate Alzheimer's DiseaseAlzheimer Disease
COMPLETED86 Analytics
PHASE2COMPLETED
Long Term Extension Study Evaluating Safety, Tolerability and Immunogenicity Of ACC-001 In Subjects With Mild To Moderate Alzheimer's Disease
Alzheimer DiseaseUnlock trial analytics
PHASE2COMPLETED
Study Evaluating ACC-001 in Japanese Patients With Mild To Moderate Alzheimer's Disease
Alzheimer DiseaseUnlock trial analytics
PHASE2COMPLETED
Study Evaluating ACC-001 In Subjects With Mild To Moderate Alzheimer's Disease
Alzheimer DiseaseUnlock trial analytics
PHASE2COMPLETED
Study Evaluating Safety, Tolerability, And Immunogenicity Of ACC-001 In Subjects With Mild To Moderate Alzheimer's Disease
Alzheimer DiseaseUnlock trial analytics

Study Endpoints

Primary Endpoints

Percentage of Participants With Treatment-emergent AEs or Serious Adverse Events (SAEs)
24 months

An AE was any untoward, undesired, or unplanned clinical event in the form of signs, symptoms, disease, or laboratory or physiologic observations occurring in a person given study drug or in a sponsor's clinical study. The event did not need to be causally related to the study drug or the clinical studies. A treatment emergent AE was defined as an event that emerged during the treatment period that was absent before treatment, or worsened during the treatment period relative to the pretreatment state. 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.

Incidence of Treatment-emergent Adverse Events (AEs) by Severity
Baseline up to 24 months

Number of participants who experienced mild, moderate, or severe AEs (mild = does not interfere with subject's usual function; moderate = interferes to some extent with subject's usual function; severe = interferes significantly with subject's usual function)

Number of Participants With Brain Abnormalities in Magnetic Resonance Imaging (MRI) Data
Baseline up to 24 months

Number of participants with brain abnormalities in MRI data that are either consistent or not consistent with AD, as determined by investigator.

Number of Participants With Abnormalities in Neurological Examination
Baseline up to 24 months

Number of participants with abnormalities in neurological examinations as determined by the investigators. Neurological examinations included Mental Status, Speech, Cranial Nerves (including pupil equality and reactivity), Visual field, Sensory, Motor, Coordination, Gait, Primitive reflexes, Tendon reflexes and Romberg.

Secondary Endpoints

Anti-a-beta IgG Titer at Specified Visits
Baseline up to 24 months
Anti-a-beta IgM Titer at Specified Visits
Baseline up to 24 months
Geometric Mean Titers (GMTs) of Anti-A-beta Immunoglobulin G (IgG) Total Using an Enzyme-linked Immunosorbent Assay (ELISA) at Weeks 2, 4, 6, 8, 10, 14, 16, 24, 28, 30, 40, 50, 54, 56, 66, 78, 91, and 104
Baseline, Week 2, 4, 6, 8, 10, 14, 16, 24, 28, 30, 40, 50, 54, 56, 66, 78, 91, and 104
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
ACC-001(3µg) + QS21EXPERIMENTALACC-001(3µg) + QS21
ACC-001(10µg) + QS21EXPERIMENTALACC-001(10µg) + QS21
ACC-001(30µg) + QS21EXPERIMENTALACC-001(30µg) + QS21
ACC-001+QS-21EXPERIMENTALActive vaccine + adjuvant, IM injection, dose of 3, 10, 30 micrograms, Day 1, month 3, 6, 9, 12
ACC-001EXPERIMENTALActive vaccine, IM injection, dose of 3, 10, 30 micrograms, Day 1, month 3, 6, 9, 12
QS-21PLACEBO_COMPARATORAdjuvant, IM injection, dose of 50 micrograms, Day 1, month 3, 6, 9, 12
PBSPLACEBO_COMPARATORPlacebo, IM injection, Day 1, month 3, 6, 9, 12
1EXPERIMENTALACC-001
2OTHERQS-21
3OTHERDiluent: Phosphate Buffered Saline
4EXPERIMENTALACC-001

Interventions

NameTypeDescription
ACC-001(3µg) + QS21BIOLOGICALVanutide Cridificar (ACC-001) 3µg + QS-21 (50µg), IM on Day 1, Month 6, Month 12 and Month 18
ACC-001(10µg) + QS21BIOLOGICALVanutide Cridificar (ACC-001) 10µg + QS-21 (50µg), IM on Day 1, Month 6, Month 12 and Month 18
ACC-001(30µg) + QS21BIOLOGICALVanutide Cridificar (ACC-001) 30 µg + QS-21 (50µg), IM on Day 1, Month 6, Month 12 and Month 18
ACC-001BIOLOGICALIM injection, dose of 3, 10, 30 micrograms, Day 1, month 3, 6, 9, 12
QS-21OTHERIM injection, dose of 50 micrograms, Day 1, month 3, 6, 9, 12
PBSOTHERIM injection, Day 1, month 3, 6, 9, 12
ACC-001 + QS-21BIOLOGICALIM injection, ACC-001 (3ug, or 10ug, or 30ug) + QS-21 50ug at Day 1 and weeks 4, 12, 26, and 52
Diluent: Phosphate Buffered SalineOTHERIM injection, PBS Diluent at Day 1 and weeks 4, 12, 26, and 52
Placebo: Phosphate buffered salineDRUGPhosphate buffered Saline (pH : 7.4), IM on day 1, month 1, month 3, month 6 and month 12
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Eligibility Criteria

Age Range50 Years to 85 Years
SexALL
Healthy VolunteersNo
Study Sites17

Inclusion Criteria: * Subjects randomized under previous 3134K1-200 study (NCT00479557) and met all inclusion/and none of the exclusion criteria * Screening brain MRI scan is consistent with the diagnosis of AD ' Mini-Mental State Examination (MMSE) score ≥10 Exclusion Criteria: * Significant Neu...

Countries:FranceGermanySpainJapanUnited States
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Frequently asked questions about ACC-001+ QS-21

What is ACC-001 used for?

ACC-001 is an investigational monoclonal antibody being studied for the treatment of Alzheimer's disease, specifically in patients with mild to moderate forms of the condition. It has been evaluated in clinical trials across multiple countries, including the United States, Japan, France, Germany, and Spain.

Who makes ACC-001?

ACC-001 is being developed by Pfizer, Inc., a biopharmaceutical company traded on the New York Stock Exchange under the ticker symbol PFE. The company has sponsored multiple clinical trials to evaluate the safety, tolerability, and immunogenicity of this investigational therapy in patients with Alzheimer's disease.

What phase is ACC-001 in?

ACC-001 is in Phase 2 clinical development. All four completed trials for this drug were Phase 2 studies, and none are currently active. The investigational therapy has not been approved by regulatory authorities and remains in clinical development for Alzheimer's disease.

What clinical trials is ACC-001 in?

ACC-001 has been studied in four completed Phase 2 clinical trials: NCT00479557, NCT00498602, NCT00752232, and NCT00955409. These trials evaluated the drug in patients with mild to moderate Alzheimer's disease across the United States, Japan, France, Germany, and Spain, with a total enrollment of 446 participants.

Is ACC-001 the same as a vaccine for Alzheimer's?

ACC-001 is an investigational monoclonal antibody designed to target Alzheimer's disease. While it is not described as a vaccine in the available data, its clinical trials focused on assessing immunogenicity, which relates to the immune response. The drug is being developed by Pfizer for mild to moderate Alzheimer's disease.