CClinicalTrials.gg
CompletedNCT00498602Updated Jan 1, 2016Results posted

Study Evaluating ACC-001 In Subjects With Mild To Moderate Alzheimer's Disease

A Phase 2 interventional study of ACC-001 + QS-21 and QS-21 in Alzheimer Disease, sponsored by Pfizer. Completed at 27 sites in United States. Open to participants aged 50 Years to 85 Years. Per ClinicalTrials.gov, last updated 2016-01-01.

Sponsored by Pfizer · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
160
Allocation
Randomized
Ages
50 Years to 85 Years
Sex
All
01

Study summary

To access the safety, tolerability, and immunogenicity of ACC-001, an investigational active immunization, in subjects with mild to moderate Alzheimer's disease.

02

Conditions studied

  • Alzheimer Disease

Browse trials for

03

In context

Alzheimer Disease

3,678 studies on the registry are indexed under Alzheimer Disease; 872 are open to participants now.

This study's enrollment of 160 is above the median of 70 across 2,808 interventional studies indexed under Alzheimer Disease.

Browse Alzheimer Disease studies →

Lead sponsor

Pfizer is the lead sponsor of 3,244 studies on the registry; 139 are open to participants now.

Of its 582 completed or terminated interventional studies of FDA-regulated products, 381 (65%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
50 Years to 85 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Diagnosis of mild to moderate Alzheimer's disease
  • Age 50-85
  • Mini Mental State Examination (MMSE) 16-26 Other criteria apply

Exclusion criteria

Exclusion Criteria:

  • Significant Neurological Disease
  • Major psychiatric disorder
  • Clinically significant systemic illness Other exclusion criteria apply.
05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
160 participants (actual)

Study arms

  • Experimental
    1

    ACC-001

    Biological: ACC-001 + QS-21

  • Other
    2

    QS-21

    Biological: QS-21

  • Other
    3

    Diluent: Phosphate Buffered Saline

    Other: Diluent: Phosphate Buffered Saline

  • Experimental
    4

    ACC-001

    Biological: ACC-001

Interventions

  • BiologicalACC-001 + QS-21

    IM injection, ACC-001 (3ug, or 10ug, or 30ug) + QS-21 50ug at Day 1 and weeks 4, 12, 26, and 52

  • BiologicalQS-21

    IM injection, QS-21 (50 ug) at Day 1 and weeks 4, 12, 26, and 52

  • OtherDiluent: Phosphate Buffered Saline

    IM injection, PBS Diluent at Day 1 and weeks 4, 12, 26, and 52

  • BiologicalACC-001

    IM injection, ACC 001 (10 ug, 30ug) at Day 1 and weeks 4, 12, 26, and 52

06

What researchers measure

Primary outcomes

  1. Percentage of Participants With Treatment-emergent AEs or Serious Adverse Events (SAEs)

    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.

    Time frame: approximately 110 weeks, including a 6-week screening period, 52 weeks of dosing and 54 weeks for follow-up after the last dose

Secondary outcomes

  1. 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

    The lower limit of quantification (LLOQ) was 100 U/mL and when the assay result was below LLOQ (100 U/mL), 50 U/mL was imputed for IgG.

    Time frame: Baseline, Week 2, 4, 6, 8, 10, 14, 16, 24, 28, 30, 40, 50, 54, 56, 66, 78, 91, and 104

  2. GMTs of Anti-A-beta Immunoglobulin M (IgM) Using ELISA at Weeks 2, 4, 6, 8, 10, 14, 16, 24, 28, 30, 40, 50, 54, 56, 66, 78, 91, and 104

    The LLOQ was 50 U/mL and when the assay result was below LLOQ (50 U/mL), 25 U/mL was imputed for IgM.

    Time frame: Baseline, Week 2, 4, 6, 8, 10, 14, 16, 24, 28, 30, 40, 50, 54, 56, 66, 78, 91, and 104

  3. Change From Baseline GMTs of Anti-A-beta IgG Subtypes Using ELISA at Visits Where an IgG Total Response is Measurable (at Weeks 2, 4, 6, 8, 10, 14, 16, 24, 28, 30, 40, 50, 54, 56, 66, 78, 91, and 104 if Applicable)

    IgG subtypes were not assessed

    Time frame: Baseline, Week 2, 4, 6, 8, 10, 14, 16, 24, 28, 30, 40, 50, 54, 56, 66, 78, 91, and 104

07

Results

Posted Jan 1, 2016

Participant flow

Planned duration was approximately 110 weeks (including 6 week screening period, 52 weeks of dosing, and 52 weeks of follow-up). Participants who completed the NCT00498602 study through Week 78 had the option to exit after this time point, for continued treatment and follow-up under extension protocol extension protocol NCT00960531.

Participant flow — Overall Study
MilestoneACC 3 μg+QS-21ACC 10 μg+QS-21ACC 30 μg+QS-21ACC 10 μgACC 30 μgQS-21 AlonePhosphate Buffered Saline
Started36614035124417
Treated36604035124417
Completed2651323083115
Not completed1010854132
Withdrew: Death0000010
Withdrew: Lack of efficacy1000000
Withdrew: Lost to follow-up0202000
Withdrew: Adverse event (ae) related to study drug1032010
Withdrew: Ae not related to study drug1300221
Withdrew: Caregiver request2220120
Withdrew: Investigator request0010000
Withdrew: Subject request3011141
Withdrew: Other2310030

Outcome measures

PrimaryPercentage of Participants With Treatment-emergent AEs or Serious Adverse Events (SAEs)

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.

Time frame:
approximately 110 weeks, including a 6-week screening period, 52 weeks of dosing and 54 weeks for follow-up after the last dose
Reported as:
Number · percentage of participants
Percentage of Participants With Treatment-emergent AEs or Serious Adverse Events (SAEs)
percentage of participantsACC 3 μg+QS-21ACC 10 μg+QS-21ACC 30 μg+QS-21ACC 10 μgACC 30 μgQS-21 AlonePhosphate Buffered Saline
Percentage of participants with AEs97.293.390.091.483.390.9100
Percentage of participants with SAEs16.718.317.514.341.711.417.6
SecondaryGeometric 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

The lower limit of quantification (LLOQ) was 100 U/mL and when the assay result was below LLOQ (100 U/mL), 50 U/mL was imputed for IgG.

Time frame:
Baseline, Week 2, 4, 6, 8, 10, 14, 16, 24, 28, 30, 40, 50, 54, 56, 66, 78, 91, and 104
Reported as:
Geometric mean · U/mL
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
U/mLACC 3 μg+QS-21ACC 10 μg+QS-21ACC 30 μg+QS-21ACC 10 μgACC 30 μgQS-21 AlonePhosphate Buffered Saline
Baseline (N: 36, 59, 40, 35, 12, 44, 17)50.0 (50.0 to 50.0)50.0 (50.0 to 50.0)50.0 (50.0 to 50.0)50.0 (50.0 to 50.0)50.0 (50.0 to 50.0)53.1 (47.1 to 59.8)50.0 (50.0 to 50.0)
Week 2 (N: 35, 60, 39, 35, 12, 43, 16)56.6 (49.1 to 65.3)69.0 (57.4 to 83.0)86.5 (65.7 to 113.9)51.7 (48.3 to 55.2)50.0 (50.0 to 50.0)52.5 (47.5 to 58.1)50.0 (50.0 to 50.0)
Week 4 (N: 35, 57, 38, 31, 12, 43, 16)53.2 (48.5 to 58.4)77.1 (61.9 to 96.0)82.8 (63.0 to 108.8)50.0 (50.0 to 50.0)50.0 (50.0 to 50.0)51.3 (48.7 to 53.9)50.0 (50.0 to 50.0)
Week 6 (N: 36, 58, 37, 33, 12, 41, 16)634.8 (322.7 to 1248.5)1089.4 (616.0 to 1837.2)1343.5 (716.0 to 2521.1)73.4 (50.6 to 106.4)103.7 (38.2 to 281.4)50.0 (50.0 to 50.0)50.0 (50.0 to 50.0)
Week 8 (N: 33, 57, 39, 33, 12, 41, 17)497.4 (253.5 to 976.1)885.2 (530.0 to 1478.7)1098.2 (626.9 to 1924.0)66.3 (48.2 to 91.1)99.8 (38.8 to 256.6)52.4 (47.6 to 57.7)50.0 (50.0 to 50.0)
Week 10 (N: 34, 59, 40, 33, 12, 43, 17)292.3 (156.5 to 546.0)762.8 (468.5 to 1242.2)878.5 (531.3 to 1452.6)77.0 (48.0 to 123.3)94.9 (39.8 to 226.5)53.0 (47.1 to 59.7)50.0 (50.0 to 50.0)
Week 14 (N: 33, 52, 39, 31, 11, 33, 14)907.5 (474.6 to 1735.6)2892.3 (1705.9 to 4903.8)3136.8 (1877.6 to 5240.7)89.6 (50.8 to 158.3)199.4 (73.7 to 539.8)50.0 (50.0 to 50.0)50.0 (50.0 to 50.0)
Week 16 (N: 33, 59, 38, 34, 12, 41, 16)996.1 (487.1 to 2037.1)3273.2 (2083.9 to 5141.4)3324.7 (1959.9 to 5641.3)91.7 (55.2 to 152.1)133.9 (56.1 to 319.9)52.6 (47.5 to 58.1)50.0 (50.0 to 50.0)
Week 24 (N: 34, 58, 37, 33, 10, 40, 16)547.8 (278.8 to 1076.3)1827.6 (1145.3 to 2916.1)1231.3 (712.2 to 2128.6)76.1 (52.1 to 111.1)139.1 (52.1 to 371.3)52.3 (47.4 to 57.4)50.0 (50.0 to 50.0)
Week 28 (N: 31, 51, 33, 29, 8, 36, 16)2011.2 (986.9 to 4098.8)4299.6 (2843.8 to 6500.8)5407.7 (3676.0 to 7955.3)108.9 (61.9 to 191.8)334.1 (77.1 to 1448.3)52.4 (47.6 to 57.6)50.0 (50.0 to 50.0)
Week 30 (N: 33, 56, 36, 32, 10, 38, 16)2028.9 (1035.8 to 3973.8)4316.8 (2900.2 to 6425.2)4713.0 (3076.0 to 7221.2)110.4 (64.1 to 190.0)234.5 (65.3 to 842.5)51.8 (48.2 to 55.7)50.0 (50.0 to 50.0)
Week 40 (N: 32, 54, 33, 33, 9, 37, 15)1167.3 (609.1 to 2237.1)2147.2 (1407.6 to 3275.3)2292.9 (1436.6 to 3659.8)97.2 (62.4 to 151.3)211.0 (53.6 to 830.7)52.1 (47.9 to 56.7)50.0 (50.0 to 50.0)
Week 50 (N: 29, 53, 33, 33, 9, 36, 16)937.3 (482.0 to 1822.6)1364.4 (911.9 to 2041.4)1262.3 (828.5 to 1923.2)80.7 (54.8 to 118.9)168.4 (52.4 to 541.3)52.8 (47.3 to 58.8)50.0 (50.0 to 50.0)
Week 54 (N: 27, 51, 30, 29, 9, 29, 14)2031.6 (1024.2 to 4029.7)5744.6 (3609.1 to 9143.7)6677.3 (3678.7 to 12120.1)160.6 (69.7 to 370.2)491.6 (85.9 to 2812.2)55.0 (45.2 to 66.9)50.0 (50.0 to 50.0)
Week 56 (N: 31, 52, 34, 32, 9, 34, 15)2635.7 (1355.5 to 5125.2)5906.1 (4058.8 to 8594.2)7642.5 (5057.9 to 11547.9)159.2 (74.2 to 341.8)463.7 (81.1 to 2650.5)53.4 (46.7 to 60.9)50.0 (50.0 to 50.0)
Week 66 (N: 31, 54, 34, 31, 9, 33, 15)1372.0 (717.1 to 2625.1)2867.4 (1835.9 to 4478.5)2882.2 (1793.1 to 4632.8)166.3 (78.8 to 350.9)280.0 (56.3 to 1393.9)63.5 (43.7 to 92.3)50.0 (50.0 to 50.0)
Week 78 (N: 31, 52, 32, 32, 8, 32, 14)1108.4 (585.1 to 2099.4)1867.5 (1197.4 to 2912.5)1338.1 (827.3 to 2164.4)142.7 (71.5 to 285.1)256.1 (58.2 to 1128.2)53.6 (46.5 to 61.6)50.0 (50.0 to 50.0)
Week 91 (N: 15, 9, 3, 8, 2, 6, 2)1824.6 (1063.2 to 3131.2)2497.0 (644.8 to 9670.1)543.0 (33.6 to 8767.8)76.8 (27.8 to 211.9)50.0 (50.0 to 50.0)50.0 (50.0 to 50.0)50.0 (50.0 to 50.0)
Week 104 (N: 15, 9, 4, 7, 1, 6, 2)1326.1 (785.0 to 2240.2)2212.7 (406.4 to 12048.4)243.3 (28.8 to 2052.4)98.9 (30.7 to 318.3)50.0 (50.0 to 50.0)50.0 (50.0 to 50.0)50.0 (50.0 to 50.0)
SecondaryGMTs of Anti-A-beta Immunoglobulin M (IgM) Using ELISA at Weeks 2, 4, 6, 8, 10, 14, 16, 24, 28, 30, 40, 50, 54, 56, 66, 78, 91, and 104

The LLOQ was 50 U/mL and when the assay result was below LLOQ (50 U/mL), 25 U/mL was imputed for IgM.

Time frame:
Baseline, Week 2, 4, 6, 8, 10, 14, 16, 24, 28, 30, 40, 50, 54, 56, 66, 78, 91, and 104
Reported as:
Geometric mean · U/mL
GMTs of Anti-A-beta Immunoglobulin M (IgM) Using ELISA at Weeks 2, 4, 6, 8, 10, 14, 16, 24, 28, 30, 40, 50, 54, 56, 66, 78, 91, and 104
U/mLACC 3 μg+QS-21ACC 10 μg+QS-21ACC 30 μg+QS-21ACC 10 μgACC 30 μgQS-21 AlonePhosphate Buffered Saline
Baseline (N: 36, 59, 40, 35, 12, 44, 17)32.3 (24.6 to 42.4)38.2 (30.8 to 47.2)34.2 (27.7 to 42.2)32.9 (28.1 to 38.5)40.3 (27.1 to 59.9)30.8 (26.4 to 36.0)25.0 (25.0 to 25.0)
Week 2 (N: 35, 60, 39, 35, 12, 43, 16)85.1 (54.2 to 133.8)127.7 (79.5 to 205.0)254.5 (133.6 to 484.9)46.5 (32.4 to 66.7)76.9 (40.5 to 146.2)31.5 (26.6 to 37.3)26.5 (23.4 to 29.9)
Week 4 (N: 35, 57, 38, 31, 12, 43, 16)82.3 (52.8 to 128.4)123.4 (75.9 to 200.7)276.6 (143.3 to 533.6)48.2 (33.2 to 70.2)92.0 (46.7 to 181.1)33.2 (28.0 to 39.3)27.3 (24.0 to 30.9)
Week 6 (N: 36, 58, 37, 33, 12, 41, 16)626.5 (340.5 to 1152.8)1283.8 (742.6 to 2219.4)1736.6 (906.4 to 3327.1)72.3 (40.8 to 128.2)144.1 (55.9 to 371.6)31.1 (26.6 to 36.3)25.0 (25.0 to 25.0)
Week 8 (N: 33, 57, 39, 33, 12, 41, 17)758.9 (388.6 to 1482.4)1903.8 (1097.7 to 3301.9)2769.5 (1407.2 to 5450.9)70.8 (40.8 to 123.0)166.4 (60.3 to 459.3)31.0 (26.1 to 36.8)26.3 (23.6 to 29.4)
Week 10 (N: 34, 59, 40, 33, 12, 43, 17)595.2 (310.0 to 1143.0)1697.7 (980.8 to 2938.6)2598.1 (1382.6 to 4882.0)69.9 (38.3 to 127.6)157.1 (56.1 to 440.1)36.3 (28.0 to 47.9)27.3 (24.0 to 31.1)
Week 14 (N: 33, 52, 39, 31, 11, 33, 14)770.2 (416.1 to 1425.6)2721.0 (1608.3 to 4603.4)5271.3 (2904.4 to 9567.3)80.8 (40.2 to 162.3)290.7 (71.8 to 1177.7)31.0 (25.5 to 37.8)25.0 (25.0 to 25.0)
Week 16 (N: 33, 59, 38, 34, 12, 41, 16)727.3 (395.0 to 1339.0)3098.3 (1904.1 to 5041.2)5666.4 (3264.6 to 9835.3)93.4 (47.5 to 183.4)271.8 (70.5 to 1047.5)34.5 (27.6 to 43.0)25.0 (25.0 to 25.0)
Week 24 (N: 34, 58, 37, 33, 10, 40, 16)461.3 (260.4 to 817.2)1862.5 (1137.9 to 3048.3)2672.4 (1553.6 to 4597.0)90.8 (48.1 to 171.3)296.2 (56.3 to 1549.6)30.9 (26.1 to 36.7)26.6 (23.3 to 30.2)
Week 28 (N: 31, 51, 33, 29, 8, 36, 16)669.0 (388.0 to 1153.6)1915.3 (1256.2 to 2920.0)3593.2 (2050.4 to 6296.9)105.5 (50.2 to 221.6)590.9 (63.4 to 5511.6)31.3 (26.1 to 37.5)25.0 (25.0 to 25.0)
Week 30 (N: 33, 56, 36, 32, 10, 38, 16)717.3 (432.6 to 1189.5)2259.4 (1524.0 to 3349.6)4147.2 (2423.1 to 7098.1)128.4 (63.1 to 261.1)343.3 (49.9 to 2361.4)37.8 (27.7 to 51.6)25.0 (25.0 to 25.0)
Week 40 (N: 32, 54, 33, 33, 9, 37, 15)559.0 (350.7 to 891.0)1351.6 (885.3 to 2063.3)1855.9 (1074.3 to 3206.1)103.9 (54.2 to 199.3)311.9 (39.1 to 2491.7)34.2 (28.1 to 41.6)25.0 (25.0 to 25.0)
Week 50 (N: 29, 53, 33, 33, 9, 36, 16)351.3 (210.2 to 587.2)1049.6 (701.4 to 1570.8)1246.4 (707.2 to 2196.7)84.7 (45.6 to 157.3)294.6 (41.2 to 2104.6)32.2 (27.1 to 38.3)25.0 (25.0 to 25.0)
Week 54 (N: 27, 51, 30, 29, 9, 29, 14)477.7 (305.2 to 747.7)1529.1 (1045.4 to 2236.7)2479.5 (1373.5 to 4476.4)121.1 (52.1 to 281.7)436.9 (52.1 to 3662.2)36.2 (28.4 to 46.3)27.2 (22.7 to 32.5)
Week 56 (N: 31, 52, 34, 32, 9, 34, 15)598.7 (375.1 to 955.5)1696.1 (1173.6 to 2451.3)2681.8 (1480.7 to 4857.0)109.8 (49.4 to 244.1)438.5 (51.5 to 3734.3)34.3 (27.2 to 43.2)29.5 (22.6 to 38.6)
Week 66 (N: 31, 54, 34, 31, 9, 33, 15)457.6 (282.2 to 742.1)1422.0 (980.7 to 2061.9)1637.2 (961.9 to 2786.6)114.3 (51.6 to 253.1)342.1 (41.2 to 2839.9)36.1 (26.5 to 49.1)27.8 (23.8 to 32.6)
Week 78 (N: 31, 52, 32, 32, 8, 32, 14)368.2 (238.4 to 568.7)1204.4 (815.6 to 1778.6)1217.7 (706.1 to 2100.1)107.5 (52.2 to 221.4)346.0 (31.2 to 3832.0)34.6 (27.9 to 43.0)28.9 (23.4 to 35.8)
Week 91 (N: 15, 9, 3, 8, 2, 6, 2)391.2 (205.6 to 744.2)1203.4 (399.9 to 3621.9)679.2 (28.5 to 16208.4)98.9 (18.4 to 530.4)25.0 (25.0 to 25.0)28.3 (20.5 to 39.1)25.0 (25.0 to 25.0)
Week 104 (N: 15, 9, 4, 7, 1, 6, 2)299.1 (144.2 to 620.8)1561.8 (438.0 to 5569.0)620.3 (78.8 to 4882.2)176.7 (26.1 to 1197.0)25.0 (25.0 to 25.0)25.0 (25.0 to 25.0)25.0 (25.0 to 25.0)
SecondaryChange From Baseline GMTs of Anti-A-beta IgG Subtypes Using ELISA at Visits Where an IgG Total Response is Measurable (at Weeks 2, 4, 6, 8, 10, 14, 16, 24, 28, 30, 40, 50, 54, 56, 66, 78, 91, and 104 if Applicable)

IgG subtypes were not assessed

Time frame:
Baseline, Week 2, 4, 6, 8, 10, 14, 16, 24, 28, 30, 40, 50, 54, 56, 66, 78, 91, and 104

No measurements were reported for this outcome.

Adverse events

Collected over Approximately 110 weeks, including a 6-week screening period, 52 weeks of dosing and 54 weeks for follow-up after the last dose.. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
ACC 3 μg+QS-21—6/36 (16.7%)34/36 (94.4%)
ACC 10 μg+QS-21—11/60 (18.3%)48/60 (80%)
ACC 30 μg+QS-21—7/40 (17.5%)35/40 (87.5%)
ACC 10 μg—5/35 (14.3%)28/35 (80%)
ACC 30 μg—5/12 (41.7%)10/12 (83.3%)
QS-21 Alone—5/44 (11.4%)40/44 (90.9%)
Phosphate Buffered Saline—3/17 (17.6%)17/17 (100%)
Most frequent serious events
Showing 10 of 56
Most frequent serious events
EventACC 3 μg+QS-21ACC 10 μg+QS-21ACC 30 μg+QS-21ACC 10 μgACC 30 μgQS-21 AlonePhosphate Buffered Saline
Cerebrovascular accidentNervous system disorders0/360/600/400/351/120/440/17
Lung neoplasm malignantNeoplasms benign, malignant and unspecified (incl cysts and polyps)0/360/600/400/351/120/440/17
Decreased appetiteMetabolism and nutrition disorders0/360/600/400/351/120/440/17
AgitationPsychiatric disorders0/360/600/400/351/120/440/17
Confusional statePsychiatric disorders0/360/600/400/351/120/440/17
HallucinationPsychiatric disorders0/360/600/400/351/120/440/17
CholelithiasisHepatobiliary disorders0/360/600/400/351/120/440/17
Carcinoid tumour pulmonaryNeoplasms benign, malignant and unspecified (incl cysts and polyps)0/360/600/400/350/120/441/17
Atrial fibrillationCardiac disorders0/360/600/400/350/120/441/17
Urinary tract infectionInfections and infestations0/360/601/400/350/120/441/17
Most frequent other events
Showing 10 of 132
Most frequent other events
EventACC 3 μg+QS-21ACC 10 μg+QS-21ACC 30 μg+QS-21ACC 10 μgACC 30 μgQS-21 AlonePhosphate Buffered Saline
Injection site painGeneral disorders7/3617/609/404/351/126/440/17
DiarrhoeaGastrointestinal disorders10/366/604/404/352/123/441/17
DepressionPsychiatric disorders5/364/604/408/353/125/441/17
Urinary tract infectionInfections and infestations3/366/602/404/350/122/444/17
HeadacheNervous system disorders3/3614/604/402/350/128/441/17
FallInjury, poisoning and procedural complications3/363/603/404/351/129/440/17
Injection site erythemaGeneral disorders7/369/606/400/350/121/440/17
Back painMusculoskeletal and connective tissue disorders2/365/603/404/350/124/443/17
Injection site swellingGeneral disorders2/366/607/400/350/120/441/17
AstheniaGeneral disorders1/362/601/403/352/121/440/17

Baseline characteristics

245 participants were randomized in both studies (86 participants in NCT00479557 and 159 participants in NCT00498602) are included in the analysis below. One participant of the randomized participants did not receive treatment.

Age, Continuous
Age, Continuous(Years)ACC 3 μg+QS-21ACC 10 μg+QS-21ACC 30 μg+QS-21ACC 10 μgACC 30 μgQS-21 AlonePhosphate Buffered SalineTotal
Mean65.7 ± 7.7569.3 ± 9.5769.0 ± 9.2771.9 ± 8.9670.9 ± 9.5968.8 ± 8.0769.4 ± 7.8269.1 ± 8.87
Sex: Female, Male
Sex: Female, Male(Participants)ACC 3 μg+QS-21ACC 10 μg+QS-21ACC 30 μg+QS-21ACC 10 μgACC 30 μgQS-21 AlonePhosphate Buffered SalineTotal
Female1629221983114139
Male203218164133106
Race/Ethnicity, Customized
Race/Ethnicity, Customized(number of participants)ACC 3 μg+QS-21ACC 10 μg+QS-21ACC 30 μg+QS-21ACC 10 μgACC 30 μgQS-21 AlonePhosphate Buffered SalineTotal
Asian00001001
Black or African American10100103
Other21110005
White33603834114317236
Mini-Mental State Examination (MMSE) Score
Mini-Mental State Examination (MMSE) Score(score)ACC 3 μg+QS-21ACC 10 μg+QS-21ACC 30 μg+QS-21ACC 10 μgACC 30 μgQS-21 AlonePhosphate Buffered SalineTotal
Mean21.4 ± 2.9621.4 ± 3.3821.0 ± 2.9221.6 ± 3.1621.8 ± 3.6021.7 ± 3.1121.2 ± 3.1721.4 ± 3.13
MMSE Stratum
MMSE Stratum(number of participants)ACC 3 μg+QS-21ACC 10 μg+QS-21ACC 30 μg+QS-21ACC 10 μgACC 30 μgQS-21 AlonePhosphate Buffered SalineTotal
High (21 - 26)2640242382911161
Low (16 - 20)10211612415684
08

Study locations

27 sites
  • Banner Alzheimer's Institute
    Phoenix, Arizona 85006, United States
  • Banner Good Samaritan Medical Center
    Phoenix, Arizona 85006, United States
  • Banner Boswell Medical Center
    Sun City, Arizona 85351, United States
  • Sun Health Research Institute
    Sun City, Arizona 85351, United States
  • University of California - San Francisco
    San Francisco, California 94117, United States
  • University of California, San Francisco
    San Francisco, California 94117, United States
  • University of California, San Francisco
    San Francisco, California 94118, United States
  • University of California, San Francisco
    San Francisco, California 94158, United States
  • General Clinical Research Center
    New Haven, Connecticut 06509, United States
  • Yale University School of Medicine
    New Haven, Connecticut 06510, United States
  • Yale-New Haven Hospital
    New Haven, Connecticut 06511, United States
  • General Clinical Research Center
    Washington, District of Columbia 20007, United States
  • GUMC
    Washington, District of Columbia 20057, United States
  • MD Clinical
    Hallandale Beach, Florida 33009, United States
  • Palm Beach Neurology - Premiere Research Institute
    West Palm Beach, Florida 33407, United States
  • Brigham and Women's Hospital
    Boston, Massachusetts 02115, United States
  • Barnes-Jewish Hospital
    St. Louis, Missouri 63108, United States
  • Washington University School of Medicine
    St. Louis, Missouri 63108, United States
  • Barrnes-Jewish Hospital at Washington University
    St. Louis, Missouri 63110, United States
  • Washington University School of Medicine
    St. Louis, Missouri 63110, United States
  • Memory Enhancement Center of America, Inc.
    Eatontown, New Jersey 07724, United States
  • Pharmcare USA
    Edison, New Jersey 08837, United States
  • Columbia Univ/Taub Institute Irving Ctr for Clinical Researc
    New York, New York 10032, United States
  • CUMC Research Pharmacy
    New York, New York 10032, United States
  • Butler Hospital
    Providence, Rhode Island 02906, United States
  • The Memory Clinic
    Bennington, Vermont 05201, United States
  • The Pharmacy
    Bennington, Vermont 05201, United States
09

References and documents

Publications

  • Pasquier F, Sadowsky C, Holstein A, Leterme Gle P, Peng Y, Jackson N, Fox NC, Ketter N, Liu E, Ryan JM; ACC-001 (QS-21) Study Team. Two Phase 2 Multiple Ascending-Dose Studies of Vanutide Cridificar (ACC-001) and QS-21 Adjuvant in Mild-to-Moderate Alzheimer's Disease. J Alzheimers Dis. 2016;51(4):1131-43. doi: 10.3233/JAD-150376. PubMed 26967206 ↗
10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 1, 2016, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT00498602
Lead sponsor
Pfizer
Collaborators
JANSSEN Alzheimer Immunotherapy Research & Development, LLC
Responsible party
Sponsor
First posted
Jul 10, 2007
Start date
Nov 2007
Primary completion
Feb 2013
Completion
Feb 2013
Results posted
Jan 1, 2016
Last update
Jan 1, 2016

Study contacts

Pfizer CT.gov Call Center
study director · Pfizer

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Nov 2015. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion