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A Study to Evaluate Tolerability and Efficacy of Evolocumab (AMG 145) in Japanese Subjects

A Double-blind, Randomized, Placebo-controlled, Multicenter Study to Evaluate Tolerability and Efficacy of AMG 145 on LDL-C in Combination With Stable Statin Therapy in Japanese Subjects With Hypercholesterolemia and High Cardiovascular Risk

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01652703
Acronym
AMG145
Enrollment
310
Registered
2012-07-30
Start date
2012-07-10
Completion date
Unknown
Last updated
2018-11-28

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Hypercholesterolemia and High Risk for Cardiovascular Events

Keywords

Japanese, hypercholesterolemia, high risk for cardiovascular events

Brief summary

The primary objective is to evaluate the effect of 12 weeks of subcutaneous evolocumab every 2 weeks or every 4 weeks, compared with placebo, on percent change from baseline in low-density lipoprotein cholesterol (LDL-C) when used in addition to statin therapy in Japanese adults with hypercholesterolemia and high cardiovascular risk.

Interventions

BIOLOGICALEvolocumab

Administered by subcutaneous injection

OTHERPlacebo

Administered by subcutaneous injection

Sponsors

Amgen
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Caregiver, Investigator)

Eligibility

Sex/Gender
ALL
Age
20 Years to 80 Years
Healthy volunteers
No

Inclusion criteria

Japanese adult, on statin, with or without ezetimibe, with stable dose(s) for at least 4 weeks, fasting LDL-C greater than or equal to 115 mg/dL (3.0 mmol/L), fasting triglycerides less than or equal to 400 mg/dL (4.5 mmol/L);

Exclusion criteria

New York Heart Association (NYHA) class III or IV, poorly controlled hypertension, recently diagnosed or poorly controlled type 2 diabetes, last known left ventricular ejection fraction \< 30%, myocardial infarction, unstable angina, percutaneous coronary intervention (PCI), coronary artery bypass graft (CABG), stroke, planned cardiac surgery or revascularization within 6 months of randomization, uncontrolled cardiac arrhythmia.

Design outcomes

Primary

MeasureTime frameDescription
Percent Change From Baseline in Low-Density Lipoprotein Cholesterol (LDL-C) at Week 12Baseline and Week 12LDL-C was measured using ultracentrifugation.

Secondary

MeasureTime frameDescription
Change From Baseline in Low-Density Lipoprotein Cholesterol (LDL-C) at Week 12Baseline and Week 12LDL-C was measured using ultracentrifugation.
Percentage of Participants With an LDL-C Response at Week 12Week 12An LDL-C response was defined as LDL-C \< 70 mg/dL (1.8 mmol/L) at Week 12. LDL-C was measured using ultracentrifugation.
Percent Change From Baseline to Week 12 in Apolipoprotein BBaseline and Week 12
Percent Change From Baseline to Week 12 in Non-HDL-CBaseline and Week 12
Percent Change From Baseline to Week 12 in Total Cholesterol/HDL-C RatioBaseline and Week 12
Percent Change From Baseline to Week 12 in Apolipoprotein B/Apolipoprotein A-1 RatioBaseline and Week 12
Percent Change From Baseline to Week 12 in VLDL-CBaseline and Week 12

Countries

Japan

Participant flow

Recruitment details

Japanese men or women ≥ 20 to ≤ 80 years of age and who were at high risk for cardiovascular events, on a stable dose of an approved statin (with or without ezetimibe) and fasting low-density lipoprotein cholesterol (LDL-C) ≥ 115 mg/dL. First patient enrolled on 10 July 2012; last patient enrolled 19 February 2013.

Pre-assignment details

Randomization was stratified by screening LDL-C level (\< 130 mg/dL \[3.4 mmol/L\] vs ≥ 130 mg/dL) and by diagnosis of heterozygous familial hypercholesterolemia (HeFH) (yes vs no).

Participants by arm

ArmCount
Placebo Q2W
Participants received placebo subcutaneous injection once every 2 weeks (Q2W) for 12 weeks.
52
Placebo Q4W
Participants received placebo subcutaneous injection once every 4 weeks (Q4W) for 12 weeks.
50
Evolocumab 70 mg Q2W
Participants received 70 mg evolocumab by subcutaneous injection once every 2 weeks for 12 weeks.
49
Evolocumab 140 mg Q2W
Participants received 140 mg evolocumab by subcutaneous injection once every 2 weeks for 12 weeks.
52
Evolocumab 280 mg Q4W
Participants received 280 mg evolocumab by subcutaneous injection once every 4 weeks for 12 weeks.
51
Evolocumab 420 mg Q4W
Participants received 420 mg evolocumab by subcutaneous injection once every 4 weeks for 12 weeks.
53
Total307

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003FG004FG005
Overall StudyOther000111
Overall StudyWithdrawal by Subject013101

Baseline characteristics

CharacteristicPlacebo Q4WTotalEvolocumab 420 mg Q4WEvolocumab 280 mg Q4WEvolocumab 140 mg Q2WPlacebo Q2WEvolocumab 70 mg Q2W
Age, Continuous60.9 years
STANDARD_DEVIATION 9.8
61.5 years
STANDARD_DEVIATION 9.7
61.3 years
STANDARD_DEVIATION 9.9
61.6 years
STANDARD_DEVIATION 9.6
60.8 years
STANDARD_DEVIATION 9.2
60.2 years
STANDARD_DEVIATION 10.1
64.1 years
STANDARD_DEVIATION 9.7
Apolipoprotein B/Apolipoprotein A-1 Ratio0.741 ratio
STANDARD_DEVIATION 0.177
0.732 ratio
STANDARD_DEVIATION 0.162
0.714 ratio
STANDARD_DEVIATION 0.158
0.725 ratio
STANDARD_DEVIATION 0.151
0.722 ratio
STANDARD_DEVIATION 0.163
0.750 ratio
STANDARD_DEVIATION 0.15
0.743 ratio
STANDARD_DEVIATION 0.177
Apolipoprotein B Concentration112.5 mg/dL
STANDARD_DEVIATION 16.6
111.5 mg/dL
STANDARD_DEVIATION 16.7
109.8 mg/dL
STANDARD_DEVIATION 15.9
109.6 mg/dL
STANDARD_DEVIATION 16.9
109.4 mg/dL
STANDARD_DEVIATION 16
114.6 mg/dL
STANDARD_DEVIATION 15.4
113.1 mg/dL
STANDARD_DEVIATION 19.2
LDL-C Concentration141.8 mg/dL
STANDARD_DEVIATION 23.4
141.8 mg/dL
STANDARD_DEVIATION 20.9
139.7 mg/dL
STANDARD_DEVIATION 18.8
141.0 mg/dL
STANDARD_DEVIATION 21.2
140.7 mg/dL
STANDARD_DEVIATION 23.3
144.4 mg/dL
STANDARD_DEVIATION 18.1
143.6 mg/dL
STANDARD_DEVIATION 20.6
Non-High-Density Lipoprotein Cholesterol (non-HDL-C) Concentration168.7 mg/dL
STANDARD_DEVIATION 26.1
168.2 mg/dL
STANDARD_DEVIATION 25
166.7 mg/dL
STANDARD_DEVIATION 23.5
165.5 mg/dL
STANDARD_DEVIATION 24.4
166.3 mg/dL
STANDARD_DEVIATION 26.2
171.3 mg/dL
STANDARD_DEVIATION 23
170.6 mg/dL
STANDARD_DEVIATION 27.2
Race/Ethnicity, Customized
American Indian or Alaska Native
0 participants0 participants0 participants0 participants0 participants0 participants0 participants
Race/Ethnicity, Customized
Asian
50 participants307 participants53 participants51 participants52 participants52 participants49 participants
Race/Ethnicity, Customized
Black or African American
0 participants0 participants0 participants0 participants0 participants0 participants0 participants
Race/Ethnicity, Customized
Native Hawaiian or Other Pacific Islander
0 participants0 participants0 participants0 participants0 participants0 participants0 participants
Race/Ethnicity, Customized
White
0 participants0 participants0 participants0 participants0 participants0 participants0 participants
Sex: Female, Male
Female
14 Participants114 Participants17 Participants23 Participants20 Participants16 Participants24 Participants
Sex: Female, Male
Male
36 Participants193 Participants36 Participants28 Participants32 Participants36 Participants25 Participants
Stratification Factor: Diagnosis of Heterozygous Familial Hypercholesterolemia (HeFH)
No
47 participants287 participants49 participants47 participants49 participants48 participants47 participants
Stratification Factor: Diagnosis of Heterozygous Familial Hypercholesterolemia (HeFH)
Yes
3 participants20 participants4 participants4 participants3 participants4 participants2 participants
Stratification Factor: LDL Level
< 130 mg/dL
17 participants98 participants17 participants15 participants17 participants17 participants15 participants
Stratification Factor: LDL Level
≥ 130 mg/dL
33 participants209 participants36 participants36 participants35 participants35 participants34 participants
Total Cholesterol/HDL-C Ratio4.317 ratio
STANDARD_DEVIATION 1.075
4.300 ratio
STANDARD_DEVIATION 1.026
4.210 ratio
STANDARD_DEVIATION 0.955
4.228 ratio
STANDARD_DEVIATION 0.993
4.302 ratio
STANDARD_DEVIATION 1.039
4.380 ratio
STANDARD_DEVIATION 0.949
4.366 ratio
STANDARD_DEVIATION 1.177
Very Low-Density Lipoprotein Cholesterol (VLDL-C) Concentration27.1 mg/dL
STANDARD_DEVIATION 10.7
26.4 mg/dL
STANDARD_DEVIATION 11.3
27.0 mg/dL
STANDARD_DEVIATION 12
24.6 mg/dL
STANDARD_DEVIATION 10.5
25.6 mg/dL
STANDARD_DEVIATION 10.8
26.9 mg/dL
STANDARD_DEVIATION 10.5
26.9 mg/dL
STANDARD_DEVIATION 13.3

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —— / —— / —— / —
other
Total, other adverse events
6 / 526 / 5010 / 499 / 5212 / 518 / 53
serious
Total, serious adverse events
0 / 520 / 500 / 491 / 521 / 512 / 53

Outcome results

Primary

Percent Change From Baseline in Low-Density Lipoprotein Cholesterol (LDL-C) at Week 12

LDL-C was measured using ultracentrifugation.

Time frame: Baseline and Week 12

Population: Full analysis set; missing ultracentrifugation (UC) LDL-C at Week 12 was imputed using last observation carried forward (LOCF) and calculated LDL-C.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Placebo Q2WPercent Change From Baseline in Low-Density Lipoprotein Cholesterol (LDL-C) at Week 12-2.71 percent changeStandard Error 2.16
Placebo Q4WPercent Change From Baseline in Low-Density Lipoprotein Cholesterol (LDL-C) at Week 120.05 percent changeStandard Error 2.32
Evolocumab 70 mg Q2WPercent Change From Baseline in Low-Density Lipoprotein Cholesterol (LDL-C) at Week 12-55.56 percent changeStandard Error 2.23
Evolocumab 140 mg Q2WPercent Change From Baseline in Low-Density Lipoprotein Cholesterol (LDL-C) at Week 12-71.32 percent changeStandard Error 2.16
Evolocumab 280 mg Q4WPercent Change From Baseline in Low-Density Lipoprotein Cholesterol (LDL-C) at Week 12-58.10 percent changeStandard Error 2.33
Evolocumab 420 mg Q4WPercent Change From Baseline in Low-Density Lipoprotein Cholesterol (LDL-C) at Week 12-63.89 percent changeStandard Error 2.27
Comparison: The null hypothesis was that there was no mean difference in the percent change from Baseline at Week 12 in LDL-C between evolocumab and placebo, and the alternative hypothesis was that a mean difference did exist.p-value: <0.00195% CI: [-74.51, -62.71]ANCOVA
Comparison: The null hypothesis was that there was no mean difference in the percent change from Baseline at Week 12 in LDL-C between evolocumab and placebo, and the alternative hypothesis was that a mean difference did exist.p-value: <0.00195% CI: [-58.84, -46.86]ANCOVA
Comparison: The null hypothesis was that there was no mean difference in the percent change from Baseline at Week 12 in LDL-C between evolocumab and placebo, and the alternative hypothesis was that a mean difference did exist.p-value: <0.00195% CI: [-70.23, -57.66]ANCOVA
Comparison: The null hypothesis was that there was no mean difference in the percent change from Baseline at Week 12 in LDL-C between evolocumab and placebo, and the alternative hypothesis was that a mean difference did exist.p-value: <0.00195% CI: [-64.51, -51.81]ANCOVA
Secondary

Change From Baseline in Low-Density Lipoprotein Cholesterol (LDL-C) at Week 12

LDL-C was measured using ultracentrifugation.

Time frame: Baseline and Week 12

Population: Full analysis set; missing data were imputed using LOCF.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Placebo Q2WChange From Baseline in Low-Density Lipoprotein Cholesterol (LDL-C) at Week 12-1.8 mg/dLStandard Error 3.6
Placebo Q4WChange From Baseline in Low-Density Lipoprotein Cholesterol (LDL-C) at Week 120.8 mg/dLStandard Error 3.4
Evolocumab 70 mg Q2WChange From Baseline in Low-Density Lipoprotein Cholesterol (LDL-C) at Week 12-77.2 mg/dLStandard Error 3.7
Evolocumab 140 mg Q2WChange From Baseline in Low-Density Lipoprotein Cholesterol (LDL-C) at Week 12-98.0 mg/dLStandard Error 3.6
Evolocumab 280 mg Q4WChange From Baseline in Low-Density Lipoprotein Cholesterol (LDL-C) at Week 12-79.9 mg/dLStandard Error 3.4
Evolocumab 420 mg Q4WChange From Baseline in Low-Density Lipoprotein Cholesterol (LDL-C) at Week 12-87.4 mg/dLStandard Error 3.3
p-value: <0.00195% CI: [-106, -86.5]ANCOVA
p-value: <0.00195% CI: [-85.4, -65.5]ANCOVA
p-value: <0.00195% CI: [-97.4, -79]ANCOVA
p-value: <0.00195% CI: [-90, -71.4]ANCOVA
Secondary

Percentage of Participants With an LDL-C Response at Week 12

An LDL-C response was defined as LDL-C \< 70 mg/dL (1.8 mmol/L) at Week 12. LDL-C was measured using ultracentrifugation.

Time frame: Week 12

Population: Full analysis set

ArmMeasureValue (NUMBER)Dispersion
Placebo Q2WPercentage of Participants With an LDL-C Response at Week 120.0 percentage of participants 3.6
Placebo Q4WPercentage of Participants With an LDL-C Response at Week 120.0 percentage of participants 3.4
Evolocumab 70 mg Q2WPercentage of Participants With an LDL-C Response at Week 1266.0 percentage of participants 3.7
Evolocumab 140 mg Q2WPercentage of Participants With an LDL-C Response at Week 1296.0 percentage of participants 3.6
Evolocumab 280 mg Q4WPercentage of Participants With an LDL-C Response at Week 1280.4 percentage of participants 3.4
Evolocumab 420 mg Q4WPercentage of Participants With an LDL-C Response at Week 1282.4 percentage of participants 3.3
p-value: <0.00195% CI: [89.64, 42232.63]Regression, Logistic
p-value: <0.00195% CI: [14.74, 5360.92]Regression, Logistic
p-value: <0.00195% CI: [28.37, 10143.4]Regression, Logistic
p-value: <0.00195% CI: [31.11, 11402.67]Regression, Logistic
Secondary

Percent Change From Baseline to Week 12 in Apolipoprotein B

Time frame: Baseline and Week 12

Population: Full analysis set; missing data were imputed using LOCF.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Placebo Q2WPercent Change From Baseline to Week 12 in Apolipoprotein B-0.90 percent changeStandard Error 1.82
Placebo Q4WPercent Change From Baseline to Week 12 in Apolipoprotein B0.22 percent changeStandard Error 2.02
Evolocumab 70 mg Q2WPercent Change From Baseline to Week 12 in Apolipoprotein B-47.65 percent changeStandard Error 1.88
Evolocumab 140 mg Q2WPercent Change From Baseline to Week 12 in Apolipoprotein B-61.59 percent changeStandard Error 1.82
Evolocumab 280 mg Q4WPercent Change From Baseline to Week 12 in Apolipoprotein B-47.16 percent changeStandard Error 2.03
Evolocumab 420 mg Q4WPercent Change From Baseline to Week 12 in Apolipoprotein B-53.22 percent changeStandard Error 1.98
p-value: <0.00195% CI: [-65.67, -55.72]ANCOVA
p-value: <0.00195% CI: [-51.8, -41.7]ANCOVA
p-value: <0.00195% CI: [-58.91, -47.97]ANCOVA
p-value: <0.00195% CI: [-52.9, -41.85]ANCOVA
Secondary

Percent Change From Baseline to Week 12 in Apolipoprotein B/Apolipoprotein A-1 Ratio

Time frame: Baseline and Week 12

Population: Full analysis set; missing data were imputed using LOCF.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Placebo Q2WPercent Change From Baseline to Week 12 in Apolipoprotein B/Apolipoprotein A-1 Ratio-3.18 percent changeStandard Error 2.12
Placebo Q4WPercent Change From Baseline to Week 12 in Apolipoprotein B/Apolipoprotein A-1 Ratio1.44 percent changeStandard Error 2.21
Evolocumab 70 mg Q2WPercent Change From Baseline to Week 12 in Apolipoprotein B/Apolipoprotein A-1 Ratio-50.71 percent changeStandard Error 2.19
Evolocumab 140 mg Q2WPercent Change From Baseline to Week 12 in Apolipoprotein B/Apolipoprotein A-1 Ratio-64.53 percent changeStandard Error 2.12
Evolocumab 280 mg Q4WPercent Change From Baseline to Week 12 in Apolipoprotein B/Apolipoprotein A-1 Ratio-50.79 percent changeStandard Error 2.22
Evolocumab 420 mg Q4WPercent Change From Baseline to Week 12 in Apolipoprotein B/Apolipoprotein A-1 Ratio-56.31 percent changeStandard Error 2.16
p-value: <0.00195% CI: [-67.14, -55.56]ANCOVA
p-value: <0.00195% CI: [-53.41, -41.65]ANCOVA
p-value: <0.00195% CI: [-63.73, -51.77]ANCOVA
p-value: <0.00195% CI: [-58.27, -46.18]ANCOVA
Secondary

Percent Change From Baseline to Week 12 in Non-HDL-C

Time frame: Baseline and Week 12

Population: Full analysis set; missing data were imputed using LOCF.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Placebo Q2WPercent Change From Baseline to Week 12 in Non-HDL-C-2.20 percent changeStandard Error 1.94
Placebo Q4WPercent Change From Baseline to Week 12 in Non-HDL-C0.55 percent changeStandard Error 2.17
Evolocumab 70 mg Q2WPercent Change From Baseline to Week 12 in Non-HDL-C-51.66 percent changeStandard Error 2
Evolocumab 140 mg Q2WPercent Change From Baseline to Week 12 in Non-HDL-C-64.76 percent changeStandard Error 1.94
Evolocumab 280 mg Q4WPercent Change From Baseline to Week 12 in Non-HDL-C-53.00 percent changeStandard Error 2.17
Evolocumab 420 mg Q4WPercent Change From Baseline to Week 12 in Non-HDL-C-57.53 percent changeStandard Error 2.12
p-value: <0.00195% CI: [-67.85, -57.27]ANCOVA
p-value: <0.00195% CI: [-54.83, -44.08]ANCOVA
p-value: <0.00195% CI: [-63.93, -52.22]ANCOVA
p-value: <0.00195% CI: [-59.46, -47.63]ANCOVA
Secondary

Percent Change From Baseline to Week 12 in Total Cholesterol/HDL-C Ratio

Time frame: Baseline and Week 12

Population: Full analysis set; missing data were imputed using LOCF.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Placebo Q2WPercent Change From Baseline to Week 12 in Total Cholesterol/HDL-C Ratio-4.82 percent changeStandard Error 1.91
Placebo Q4WPercent Change From Baseline to Week 12 in Total Cholesterol/HDL-C Ratio1.19 percent changeStandard Error 2.09
Evolocumab 70 mg Q2WPercent Change From Baseline to Week 12 in Total Cholesterol/HDL-C Ratio-42.04 percent changeStandard Error 1.98
Evolocumab 140 mg Q2WPercent Change From Baseline to Week 12 in Total Cholesterol/HDL-C Ratio-51.81 percent changeStandard Error 1.91
Evolocumab 280 mg Q4WPercent Change From Baseline to Week 12 in Total Cholesterol/HDL-C Ratio-44.11 percent changeStandard Error 2.1
Evolocumab 420 mg Q4WPercent Change From Baseline to Week 12 in Total Cholesterol/HDL-C Ratio-45.47 percent changeStandard Error 2.05
p-value: <0.00195% CI: [-52.21, -41.76]ANCOVA
p-value: <0.00195% CI: [-42.52, -31.91]ANCOVA
p-value: <0.00195% CI: [-52.32, -41]ANCOVA
p-value: <0.00195% CI: [-51.02, -39.58]ANCOVA
Secondary

Percent Change From Baseline to Week 12 in VLDL-C

Time frame: Baseline and Week 12

Population: Full analysis set; missing data were imputed using LOCF.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Placebo Q2WPercent Change From Baseline to Week 12 in VLDL-C8.23 percent changeStandard Error 8.55
Placebo Q4WPercent Change From Baseline to Week 12 in VLDL-C7.26 percent changeStandard Error 6.87
Evolocumab 70 mg Q2WPercent Change From Baseline to Week 12 in VLDL-C-16.02 percent changeStandard Error 8.74
Evolocumab 140 mg Q2WPercent Change From Baseline to Week 12 in VLDL-C-26.26 percent changeStandard Error 8.44
Evolocumab 280 mg Q4WPercent Change From Baseline to Week 12 in VLDL-C-13.56 percent changeStandard Error 6.8
Evolocumab 420 mg Q4WPercent Change From Baseline to Week 12 in VLDL-C-22.56 percent changeStandard Error 6.71
p-value: 0.00495% CI: [-57.71, -11.26]ANCOVA
p-value: 0.04495% CI: [-47.83, -0.68]ANCOVA
p-value: 0.00295% CI: [-48.32, -11.32]ANCOVA
p-value: 0.02895% CI: [-39.41, -2.22]ANCOVA

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026