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Multiple Ascending Dose Study of AMG 598 in Adults With Obesity

A Phase 1b, Randomized, Double-blind, Placebo-controlled, Multiple Ascending Dose Study to Evaluate the Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of AMG 598 in Subjects With Obesity

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03757130
Enrollment
50
Registered
2018-11-28
Start date
2018-11-26
Completion date
2019-12-16
Last updated
2023-09-14

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

Conditions

Obesity

Brief summary

The main objective of this study is to assess the safety and tolerability of multiple doses of AMG 598 administered alone or in combination with liraglutide in adults with obesity.

Interventions

DRUGAMG 598

AMG 598 administered by subcutaneous injection

DRUGPlacebo

Placebo matching to AMG 598 administered by subcutaneous injection

DRUGLiraglutide

Liraglutide administered by subcutaneous injection. The starting dose is 0.6 mg/day, and increased by 0.6 mg/day dose increment every 7 days, up to the full dosage of 3.0 mg/day by week 5.

Sponsors

Amgen
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
OTHER
Masking
DOUBLE (Subject, Investigator)

Masking description

Double-blind study

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

* Men and women with ages between 18 and 65 years old, inclusive, at time of signing consent * Body mass index (BMI) between greater than or equal to 30.0 kg/m\^2 and less than or equal to 40.0 kg/m\^2 at screening * Except for obesity, otherwise healthy or medically stable per protocol * Have a stable body weight defined as less than 5 kg self-reported change during the previous 8 weeks prior to screening * Other Inclusion criteria may apply * Stable on liraglutide, depending on cohort

Exclusion criteria

* History or clinical evidence of diabetes * Inadequate organ function at screening * Currently receiving treatment in another investigational device or drug study * Women who are pregnant/lactating/breastfeeding or who plan to become pregnant/breastfeed while on study through 5 months after receiving the last dose of investigational product * History or evidence of a clinically significant disorder, condition or disease that would pose a risk to subject safety or interfere with the study evaluation, procedures or completion * A family or personal history of medullary thyroid carcinoma or multiple endocrine neoplasia type 2; a personal history of non-familial medullary thyroid carcinoma; confirmed chronic pancreatitis or idiopathic acute pancreatitis, or gallbladder disease (ie, cholelithiasis or cholecystitis) not treated with cholecystectomy, for cohorts receiving liraglutide * History of major depressive disorder * Other

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With Treatment-emergent Adverse Events207 daysThe investigator assessed the severity of each adverse event reported during the study. The assessment was based on the Amgen Standard Grading Scale: Mild: Aware of sign or symptom, but easily tolerated. Moderate: Discomfort enough to cause interference with usual activity. Severe: Incapacitating with inability to work or do usual activity. A Serious adverse event is defined as any untoward medical occurrence that, met at least 1 of the following serious criteria * Death; * Was life-threatening; * Required in-patient hospitalization or prolongation of existing hospitalization; * Resulted in persistent or significant disability/incapacity; * Was a congenital anomaly/birth defect; * Other medically important serious event. The investigator also assessed whether each adverse event was related to study drug administration based on clinical judgement.
Number of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign Findings207 daysTEAEs due to laboratory, electrocardiogram (ECG) and vital sign findings include any abnormal laboratory test results (hematology, clinical chemistry, or urinalysis) or electrocardiogram, or vital signs measurements, including those that worsened from baseline, that were considered clinically significant in the medical and scientific judgment of the investigator (ie, not related to progression of underlying disease).

Secondary

MeasureTime frameDescription
Dose-normalized Cmax of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 1, predose, and days 6, 8, 15, 22, and 29; Day 57 predose and days 62, 64, 71, 85, 99, 113, 127, 169, and 207Serum concentrations of AMG 598 were determined using a validated electrochemiluminescence-based method. The lower limit of quantitation was 50.0 ng/mL.
Area Under the Concentration-time Curve From Time 0 to 28 Days (AUC0-28) for AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 1, predose, and days 6, 8, 15, 22, and 29; Day 57 predose and days 62, 64, 71, and 85Serum concentrations of AMG 598 were determined using a validated electrochemiluminescence-based method. The lower limit of quantitation was 50.0 ng/mL.
Dose-normalized AUC0-28 for AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 1, predose, and days 6, 8, 15, 22, and 29; Day 57 predose and days 62, 64, 71, and 85Serum concentrations of AMG 598 were determined using a validated electrochemiluminescence-based method. The lower limit of quantitation was 50.0 ng/mL.
Maximum Observed Concentration (Cmax) of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 1, predose, and days 6, 8, 15, 22, and 29; Day 57 predose and days 62, 64, 71, 85, 99, 113, 127, 169, and 207Serum concentrations of AMG 598 were determined using a validated electrochemiluminescence-based method. The lower limit of quantitation was 50.0 ng/mL.
Accumulation Ratio (AR) for Cmax of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 1, predose, and days 6, 8, 15, 22, and 29; Day 57 predose and days 62, 64, 71, 85, 99, 113, 127, 169, and 207Serum concentrations of AMG 598 were determined using a validated electrochemiluminescence-based method. The lower limit of quantitation was 50.0 ng/mL. Accumulation ratio for Cmax = Day 57 Cmax / Day 1 Cmax.
Accumulation Ratio of AUC0-28 for AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 1, predose, and days 6, 8, 15, 22, and 29; Day 57 predose and days 62, 64, 71, and 85Serum concentrations of AMG 598 were determined using a validated electrochemiluminescence-based method. The lower limit of quantitation was 50.0 ng/mL. The accumulation ratio for AUC0-28 = Day 57 AUC0-28 / Day 1 AUC0-28.
Terminal Half-life (T1/2,z) of AMG 598 After Subcutaneous Injection on Day 57Day 57 predose and days 62, 64, 71, 85, 99, 113, 127, 169, and 207Serum concentrations of AMG 598 were determined using a validated electrochemiluminescence-based method. The lower limit of quantitation was 50.0 ng/mL.
Area Under the Concentration-time Curve From Time 0 to Time of Last Quantifiable Concentration (AUClast) of AMG 598 After Subcutaneous Injection on Day 57Day 57 predose and days 62, 64, 71, 85, 99, 113, 127, 169, and 207Serum concentrations of AMG 598 were determined using a validated electrochemiluminescence-based method. The lower limit of quantitation was 50.0 ng/mL.
Time to Maximum Observed Concentration (Tmax) of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 1, predose, and days 6, 8, 15, 22, and 29; Day 57 predose and days 62, 64, 71, 85, 99, 113, 127, 169, and 207Serum concentrations of AMG 598 were determined using a validated electrochemiluminescence-based method. The lower limit of quantitation was 50.0 ng/mL.

Countries

United States

Participant flow

Recruitment details

This study was conducted at 2 centers in the United States.

Pre-assignment details

Eligible participants were randomized to one of six treatment cohorts. Within each cohort participants were randomly assigned in a 3:1 ratio to receive either AMG 598 or placebo.

Participants by arm

ArmCount
Placebo
Participants received placebo subcutaneous injection once every 4 weeks (Q4W) for a total of 3 doses.
6
Placebo + Liraglutide
Participants received placebo subcutaneous injection once every 4 weeks for a total of 3 doses in addition to liraglutide administered by subcutaneous injection once a day for 12 weeks. The starting dose of liraglutide was 0.6 mg/day, increasing in increments of 0.6 mg/day every 7 days to reach the full dosage of 3 mg/day by week 5.
6
AMG 598 70 mg
Participants received 70 mg AMG 598 by subcutaneous injection once every 4 weeks (Q4W) for a total of 3 doses.
6
AMG 598 70 mg + Liraglutide
Participants received 70 mg AMG 598 by subcutaneous injection once every 4 weeks for a total of 3 doses in addition liraglutide administered by subcutaneous injection once a day for 12 weeks. The starting dose of liraglutide was 0.6 mg/day, increasing in increments of 0.6 mg/day every 7 days to reach the full dosage of 3 mg/day by week 5.
8
AMG 598 210 mg
Participants received 210 mg AMG 598 by subcutaneous injection once every 4 weeks for a total of 3 doses.
6
AMG 598 210 mg + Liraglutide
Participants received 210 mg AMG 598 by subcutaneous injection once every 4 weeks for a total of 3 doses in addition to liraglutide administered by subcutaneous injection once a day for 12 weeks. The starting dose of liraglutide was 0.6 mg/day, increasing in increments of 0.6 mg/day every 7 days to reach the full dosage of 3 mg/day by week 5.
6
AMG 598 420 mg
Participants received 420 mg AMG 598 by subcutaneous injection once every 4 weeks for a total of 3 doses.
6
AMG 598 420 mg + Liraglutide
Participants received 420 mg AMG 598 by subcutaneous injection once every 4 weeks for a total of 3 doses in addition to liraglutide administered by subcutaneous injection once a day for 12 weeks. The starting dose of liraglutide was 0.6 mg/day, increasing in increments of 0.6 mg/day every 7 days to reach the full dosage of 3 mg/day by week 5.
6
Total50

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003FG004FG005FG006FG007
Overall StudyLost to Follow-up00010001
Overall StudyWithdrawal by Subject00000010

Baseline characteristics

CharacteristicPlacebo + LiraglutideAMG 598 70 mgAMG 598 70 mg + LiraglutideAMG 598 210 mgPlaceboAMG 598 210 mg + LiraglutideAMG 598 420 mgAMG 598 420 mg + LiraglutideTotal
Age, Continuous41.8 years
STANDARD_DEVIATION 7.6
41.7 years
STANDARD_DEVIATION 11.3
46.1 years
STANDARD_DEVIATION 14.2
50.3 years
STANDARD_DEVIATION 7.8
47.2 years
STANDARD_DEVIATION 11
51.5 years
STANDARD_DEVIATION 8.5
44.5 years
STANDARD_DEVIATION 10.9
49.2 years
STANDARD_DEVIATION 11.7
46.5 years
STANDARD_DEVIATION 10.6
Age, Customized
< 40 years
2 Participants3 Participants3 Participants1 Participants1 Participants1 Participants2 Participants1 Participants14 Participants
Age, Customized
≥ 40 years
4 Participants3 Participants5 Participants5 Participants5 Participants5 Participants4 Participants5 Participants36 Participants
Body Mass Index (BMI)33.20 kg/m²
STANDARD_DEVIATION 2.1
34.62 kg/m²
STANDARD_DEVIATION 2.92
35.46 kg/m²
STANDARD_DEVIATION 2.19
34.43 kg/m²
STANDARD_DEVIATION 3.37
34.22 kg/m²
STANDARD_DEVIATION 2.61
34.42 kg/m²
STANDARD_DEVIATION 3.24
32.77 kg/m²
STANDARD_DEVIATION 3.04
36.00 kg/m²
STANDARD_DEVIATION 4.04
34.43 kg/m²
STANDARD_DEVIATION 2.92
Ethnicity (NIH/OMB)
Hispanic or Latino
5 Participants4 Participants8 Participants6 Participants4 Participants6 Participants3 Participants5 Participants41 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
1 Participants2 Participants0 Participants0 Participants2 Participants0 Participants3 Participants1 Participants9 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants0 Participants0 Participants1 Participants0 Participants0 Participants1 Participants
Race (NIH/OMB)
Black or African American
0 Participants3 Participants1 Participants1 Participants1 Participants2 Participants1 Participants1 Participants10 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
6 Participants3 Participants7 Participants5 Participants5 Participants3 Participants5 Participants5 Participants39 Participants
Sex: Female, Male
Female
0 Participants1 Participants4 Participants3 Participants2 Participants3 Participants1 Participants1 Participants15 Participants
Sex: Female, Male
Male
6 Participants5 Participants4 Participants3 Participants4 Participants3 Participants5 Participants5 Participants35 Participants

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
EG006
affected / at risk
EG007
affected / at risk
deaths
Total, all-cause mortality
0 / 60 / 60 / 60 / 80 / 60 / 60 / 60 / 6
other
Total, other adverse events
1 / 66 / 64 / 67 / 85 / 66 / 60 / 64 / 6
serious
Total, serious adverse events
0 / 60 / 60 / 60 / 80 / 60 / 60 / 60 / 6

Outcome results

Primary

Number of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign Findings

TEAEs due to laboratory, electrocardiogram (ECG) and vital sign findings include any abnormal laboratory test results (hematology, clinical chemistry, or urinalysis) or electrocardiogram, or vital signs measurements, including those that worsened from baseline, that were considered clinically significant in the medical and scientific judgment of the investigator (ie, not related to progression of underlying disease).

Time frame: 207 days

Population: All participants who received at least 1 dose of study drug (AMG 598 or placebo) on day 1.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
PlaceboNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsBlood creatine phosphokinase increased0 Participants
PlaceboNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsHypertension0 Participants
PlaceboNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsLipase increased0 Participants
PlaceboNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsHepatic enzyme increased0 Participants
PlaceboNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsElectrocardiogram T wave abnormal0 Participants
Placebo + LiraglutideNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsElectrocardiogram T wave abnormal0 Participants
Placebo + LiraglutideNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsLipase increased1 Participants
Placebo + LiraglutideNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsHypertension0 Participants
Placebo + LiraglutideNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsHepatic enzyme increased0 Participants
Placebo + LiraglutideNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsBlood creatine phosphokinase increased0 Participants
AMG 598 70 mgNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsElectrocardiogram T wave abnormal0 Participants
AMG 598 70 mgNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsHypertension1 Participants
AMG 598 70 mgNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsBlood creatine phosphokinase increased0 Participants
AMG 598 70 mgNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsLipase increased0 Participants
AMG 598 70 mgNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsHepatic enzyme increased0 Participants
AMG 598 70 mg + LiraglutideNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsHepatic enzyme increased0 Participants
AMG 598 70 mg + LiraglutideNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsHypertension0 Participants
AMG 598 70 mg + LiraglutideNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsBlood creatine phosphokinase increased0 Participants
AMG 598 70 mg + LiraglutideNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsElectrocardiogram T wave abnormal0 Participants
AMG 598 70 mg + LiraglutideNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsLipase increased3 Participants
AMG 598 210 mgNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsHepatic enzyme increased0 Participants
AMG 598 210 mgNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsBlood creatine phosphokinase increased1 Participants
AMG 598 210 mgNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsElectrocardiogram T wave abnormal0 Participants
AMG 598 210 mgNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsLipase increased0 Participants
AMG 598 210 mgNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsHypertension0 Participants
AMG 598 210 mg + LiraglutideNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsHepatic enzyme increased0 Participants
AMG 598 210 mg + LiraglutideNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsLipase increased1 Participants
AMG 598 210 mg + LiraglutideNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsElectrocardiogram T wave abnormal0 Participants
AMG 598 210 mg + LiraglutideNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsBlood creatine phosphokinase increased0 Participants
AMG 598 210 mg + LiraglutideNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsHypertension0 Participants
AMG 598 420 mgNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsHepatic enzyme increased0 Participants
AMG 598 420 mgNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsBlood creatine phosphokinase increased0 Participants
AMG 598 420 mgNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsElectrocardiogram T wave abnormal0 Participants
AMG 598 420 mgNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsHypertension0 Participants
AMG 598 420 mgNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsLipase increased0 Participants
AMG 598 420 mg + LiraglutideNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsHypertension0 Participants
AMG 598 420 mg + LiraglutideNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsLipase increased1 Participants
AMG 598 420 mg + LiraglutideNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsBlood creatine phosphokinase increased0 Participants
AMG 598 420 mg + LiraglutideNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsHepatic enzyme increased1 Participants
AMG 598 420 mg + LiraglutideNumber of Participants With TEAEs Due to Laboratory, Electrocardiogram, and Vital Sign FindingsElectrocardiogram T wave abnormal1 Participants
Primary

Number of Participants With Treatment-emergent Adverse Events

The investigator assessed the severity of each adverse event reported during the study. The assessment was based on the Amgen Standard Grading Scale: Mild: Aware of sign or symptom, but easily tolerated. Moderate: Discomfort enough to cause interference with usual activity. Severe: Incapacitating with inability to work or do usual activity. A Serious adverse event is defined as any untoward medical occurrence that, met at least 1 of the following serious criteria * Death; * Was life-threatening; * Required in-patient hospitalization or prolongation of existing hospitalization; * Resulted in persistent or significant disability/incapacity; * Was a congenital anomaly/birth defect; * Other medically important serious event. The investigator also assessed whether each adverse event was related to study drug administration based on clinical judgement.

Time frame: 207 days

Population: All participants who received at least 1 dose of study drug (AMG 598 or placebo) on day 1.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
PlaceboNumber of Participants With Treatment-emergent Adverse EventsMild TEAEs1 Participants
PlaceboNumber of Participants With Treatment-emergent Adverse EventsSevere TEAEs0 Participants
PlaceboNumber of Participants With Treatment-emergent Adverse EventsTEAE leading to discontinuation of liraglutide0 Participants
PlaceboNumber of Participants With Treatment-emergent Adverse EventsSerious TEAEs0 Participants
PlaceboNumber of Participants With Treatment-emergent Adverse EventsFatal TEAEs0 Participants
PlaceboNumber of Participants With Treatment-emergent Adverse EventsAll treatment-emergent adverse events (TEAEs)1 Participants
PlaceboNumber of Participants With Treatment-emergent Adverse EventsTEAE leading to discontinuation of AMG 5980 Participants
PlaceboNumber of Participants With Treatment-emergent Adverse EventsModerate TEAEs0 Participants
PlaceboNumber of Participants With Treatment-emergent Adverse EventsLife-threatening TEAEs0 Participants
Placebo + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsModerate TEAEs1 Participants
Placebo + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsSevere TEAEs0 Participants
Placebo + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsLife-threatening TEAEs0 Participants
Placebo + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsSerious TEAEs0 Participants
Placebo + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsFatal TEAEs0 Participants
Placebo + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsTEAE leading to discontinuation of AMG 5980 Participants
Placebo + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsAll treatment-emergent adverse events (TEAEs)6 Participants
Placebo + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsTEAE leading to discontinuation of liraglutide1 Participants
Placebo + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsMild TEAEs6 Participants
AMG 598 70 mgNumber of Participants With Treatment-emergent Adverse EventsModerate TEAEs0 Participants
AMG 598 70 mgNumber of Participants With Treatment-emergent Adverse EventsTEAE leading to discontinuation of AMG 5980 Participants
AMG 598 70 mgNumber of Participants With Treatment-emergent Adverse EventsFatal TEAEs0 Participants
AMG 598 70 mgNumber of Participants With Treatment-emergent Adverse EventsMild TEAEs4 Participants
AMG 598 70 mgNumber of Participants With Treatment-emergent Adverse EventsLife-threatening TEAEs0 Participants
AMG 598 70 mgNumber of Participants With Treatment-emergent Adverse EventsAll treatment-emergent adverse events (TEAEs)4 Participants
AMG 598 70 mgNumber of Participants With Treatment-emergent Adverse EventsSevere TEAEs0 Participants
AMG 598 70 mgNumber of Participants With Treatment-emergent Adverse EventsTEAE leading to discontinuation of liraglutide0 Participants
AMG 598 70 mgNumber of Participants With Treatment-emergent Adverse EventsSerious TEAEs0 Participants
AMG 598 70 mg + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsSevere TEAEs0 Participants
AMG 598 70 mg + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsAll treatment-emergent adverse events (TEAEs)7 Participants
AMG 598 70 mg + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsSerious TEAEs0 Participants
AMG 598 70 mg + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsLife-threatening TEAEs0 Participants
AMG 598 70 mg + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsMild TEAEs7 Participants
AMG 598 70 mg + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsFatal TEAEs0 Participants
AMG 598 70 mg + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsTEAE leading to discontinuation of liraglutide1 Participants
AMG 598 70 mg + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsModerate TEAEs2 Participants
AMG 598 70 mg + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsTEAE leading to discontinuation of AMG 5980 Participants
AMG 598 210 mgNumber of Participants With Treatment-emergent Adverse EventsSerious TEAEs0 Participants
AMG 598 210 mgNumber of Participants With Treatment-emergent Adverse EventsAll treatment-emergent adverse events (TEAEs)5 Participants
AMG 598 210 mgNumber of Participants With Treatment-emergent Adverse EventsMild TEAEs5 Participants
AMG 598 210 mgNumber of Participants With Treatment-emergent Adverse EventsModerate TEAEs0 Participants
AMG 598 210 mgNumber of Participants With Treatment-emergent Adverse EventsSevere TEAEs0 Participants
AMG 598 210 mgNumber of Participants With Treatment-emergent Adverse EventsTEAE leading to discontinuation of AMG 5980 Participants
AMG 598 210 mgNumber of Participants With Treatment-emergent Adverse EventsTEAE leading to discontinuation of liraglutide0 Participants
AMG 598 210 mgNumber of Participants With Treatment-emergent Adverse EventsLife-threatening TEAEs0 Participants
AMG 598 210 mgNumber of Participants With Treatment-emergent Adverse EventsFatal TEAEs0 Participants
AMG 598 210 mg + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsMild TEAEs6 Participants
AMG 598 210 mg + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsAll treatment-emergent adverse events (TEAEs)6 Participants
AMG 598 210 mg + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsTEAE leading to discontinuation of liraglutide0 Participants
AMG 598 210 mg + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsModerate TEAEs0 Participants
AMG 598 210 mg + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsSevere TEAEs0 Participants
AMG 598 210 mg + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsFatal TEAEs0 Participants
AMG 598 210 mg + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsSerious TEAEs0 Participants
AMG 598 210 mg + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsLife-threatening TEAEs0 Participants
AMG 598 210 mg + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsTEAE leading to discontinuation of AMG 5980 Participants
AMG 598 420 mgNumber of Participants With Treatment-emergent Adverse EventsLife-threatening TEAEs0 Participants
AMG 598 420 mgNumber of Participants With Treatment-emergent Adverse EventsAll treatment-emergent adverse events (TEAEs)0 Participants
AMG 598 420 mgNumber of Participants With Treatment-emergent Adverse EventsSerious TEAEs0 Participants
AMG 598 420 mgNumber of Participants With Treatment-emergent Adverse EventsTEAE leading to discontinuation of liraglutide0 Participants
AMG 598 420 mgNumber of Participants With Treatment-emergent Adverse EventsSevere TEAEs0 Participants
AMG 598 420 mgNumber of Participants With Treatment-emergent Adverse EventsModerate TEAEs0 Participants
AMG 598 420 mgNumber of Participants With Treatment-emergent Adverse EventsMild TEAEs0 Participants
AMG 598 420 mgNumber of Participants With Treatment-emergent Adverse EventsFatal TEAEs0 Participants
AMG 598 420 mgNumber of Participants With Treatment-emergent Adverse EventsTEAE leading to discontinuation of AMG 5980 Participants
AMG 598 420 mg + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsFatal TEAEs0 Participants
AMG 598 420 mg + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsTEAE leading to discontinuation of AMG 5981 Participants
AMG 598 420 mg + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsSevere TEAEs0 Participants
AMG 598 420 mg + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsModerate TEAEs1 Participants
AMG 598 420 mg + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsTEAE leading to discontinuation of liraglutide2 Participants
AMG 598 420 mg + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsMild TEAEs4 Participants
AMG 598 420 mg + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsLife-threatening TEAEs0 Participants
AMG 598 420 mg + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsAll treatment-emergent adverse events (TEAEs)4 Participants
AMG 598 420 mg + LiraglutideNumber of Participants With Treatment-emergent Adverse EventsSerious TEAEs0 Participants
Secondary

Accumulation Ratio (AR) for Cmax of AMG 598 After Subcutaneous Injection on Day 1 and Day 57

Serum concentrations of AMG 598 were determined using a validated electrochemiluminescence-based method. The lower limit of quantitation was 50.0 ng/mL. Accumulation ratio for Cmax = Day 57 Cmax / Day 1 Cmax.

Time frame: Day 1, predose, and days 6, 8, 15, 22, and 29; Day 57 predose and days 62, 64, 71, 85, 99, 113, 127, 169, and 207

Population: The PK analysis set; participants with available data at both time points.

ArmMeasureValue (MEAN)Dispersion
PlaceboAccumulation Ratio (AR) for Cmax of AMG 598 After Subcutaneous Injection on Day 1 and Day 571.62 ratioStandard Deviation 0.394
Placebo + LiraglutideAccumulation Ratio (AR) for Cmax of AMG 598 After Subcutaneous Injection on Day 1 and Day 571.70 ratioStandard Deviation 0.237
AMG 598 70 mgAccumulation Ratio (AR) for Cmax of AMG 598 After Subcutaneous Injection on Day 1 and Day 572.12 ratioStandard Deviation 0.251
AMG 598 70 mg + LiraglutideAccumulation Ratio (AR) for Cmax of AMG 598 After Subcutaneous Injection on Day 1 and Day 571.92 ratioStandard Deviation 0.207
AMG 598 210 mgAccumulation Ratio (AR) for Cmax of AMG 598 After Subcutaneous Injection on Day 1 and Day 571.83 ratioStandard Deviation 0.138
AMG 598 210 mg + LiraglutideAccumulation Ratio (AR) for Cmax of AMG 598 After Subcutaneous Injection on Day 1 and Day 572.13 ratioStandard Deviation 0.418
Secondary

Accumulation Ratio of AUC0-28 for AMG 598 After Subcutaneous Injection on Day 1 and Day 57

Serum concentrations of AMG 598 were determined using a validated electrochemiluminescence-based method. The lower limit of quantitation was 50.0 ng/mL. The accumulation ratio for AUC0-28 = Day 57 AUC0-28 / Day 1 AUC0-28.

Time frame: Day 1, predose, and days 6, 8, 15, 22, and 29; Day 57 predose and days 62, 64, 71, and 85

Population: The PK analysis set; participants with available data at both time points.

ArmMeasureValue (MEAN)Dispersion
PlaceboAccumulation Ratio of AUC0-28 for AMG 598 After Subcutaneous Injection on Day 1 and Day 571.74 ratioStandard Deviation 0.48
Placebo + LiraglutideAccumulation Ratio of AUC0-28 for AMG 598 After Subcutaneous Injection on Day 1 and Day 571.84 ratioStandard Deviation 0.223
AMG 598 70 mgAccumulation Ratio of AUC0-28 for AMG 598 After Subcutaneous Injection on Day 1 and Day 572.09 ratioStandard Deviation 0.254
AMG 598 70 mg + LiraglutideAccumulation Ratio of AUC0-28 for AMG 598 After Subcutaneous Injection on Day 1 and Day 571.86 ratioStandard Deviation 0.186
AMG 598 210 mgAccumulation Ratio of AUC0-28 for AMG 598 After Subcutaneous Injection on Day 1 and Day 571.96 ratioStandard Deviation 0.177
AMG 598 210 mg + LiraglutideAccumulation Ratio of AUC0-28 for AMG 598 After Subcutaneous Injection on Day 1 and Day 572.17 ratioStandard Deviation 0.291
Secondary

Area Under the Concentration-time Curve From Time 0 to 28 Days (AUC0-28) for AMG 598 After Subcutaneous Injection on Day 1 and Day 57

Serum concentrations of AMG 598 were determined using a validated electrochemiluminescence-based method. The lower limit of quantitation was 50.0 ng/mL.

Time frame: Day 1, predose, and days 6, 8, 15, 22, and 29; Day 57 predose and days 62, 64, 71, and 85

Population: The PK analysis set; participants with available data at each time point.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboArea Under the Concentration-time Curve From Time 0 to 28 Days (AUC0-28) for AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 1139 days*µg/mLStandard Deviation 19.6
PlaceboArea Under the Concentration-time Curve From Time 0 to 28 Days (AUC0-28) for AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 57215 days*µg/mLStandard Deviation 45.3
Placebo + LiraglutideArea Under the Concentration-time Curve From Time 0 to 28 Days (AUC0-28) for AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 1147 days*µg/mLStandard Deviation 21.8
Placebo + LiraglutideArea Under the Concentration-time Curve From Time 0 to 28 Days (AUC0-28) for AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 57276 days*µg/mLStandard Deviation 57.6
AMG 598 70 mgArea Under the Concentration-time Curve From Time 0 to 28 Days (AUC0-28) for AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 1495 days*µg/mLStandard Deviation 72.7
AMG 598 70 mgArea Under the Concentration-time Curve From Time 0 to 28 Days (AUC0-28) for AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 57964 days*µg/mLStandard Deviation 203
AMG 598 70 mg + LiraglutideArea Under the Concentration-time Curve From Time 0 to 28 Days (AUC0-28) for AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 1366 days*µg/mLStandard Deviation 101
AMG 598 70 mg + LiraglutideArea Under the Concentration-time Curve From Time 0 to 28 Days (AUC0-28) for AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 57749 days*µg/mLStandard Deviation 254
AMG 598 210 mgArea Under the Concentration-time Curve From Time 0 to 28 Days (AUC0-28) for AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 11080 days*µg/mLStandard Deviation 225
AMG 598 210 mgArea Under the Concentration-time Curve From Time 0 to 28 Days (AUC0-28) for AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 571990 days*µg/mLStandard Deviation 341
AMG 598 210 mg + LiraglutideArea Under the Concentration-time Curve From Time 0 to 28 Days (AUC0-28) for AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 1763 days*µg/mLStandard Deviation 285
AMG 598 210 mg + LiraglutideArea Under the Concentration-time Curve From Time 0 to 28 Days (AUC0-28) for AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 571610 days*µg/mLStandard Deviation 511
Secondary

Area Under the Concentration-time Curve From Time 0 to Time of Last Quantifiable Concentration (AUClast) of AMG 598 After Subcutaneous Injection on Day 57

Serum concentrations of AMG 598 were determined using a validated electrochemiluminescence-based method. The lower limit of quantitation was 50.0 ng/mL.

Time frame: Day 57 predose and days 62, 64, 71, 85, 99, 113, 127, 169, and 207

Population: The PK analysis set; participants with available data for AUClast.

ArmMeasureValue (MEAN)Dispersion
PlaceboArea Under the Concentration-time Curve From Time 0 to Time of Last Quantifiable Concentration (AUClast) of AMG 598 After Subcutaneous Injection on Day 57458 days*µg/mLStandard Deviation 102
Placebo + LiraglutideArea Under the Concentration-time Curve From Time 0 to Time of Last Quantifiable Concentration (AUClast) of AMG 598 After Subcutaneous Injection on Day 57612 days*µg/mLStandard Deviation 129
AMG 598 70 mgArea Under the Concentration-time Curve From Time 0 to Time of Last Quantifiable Concentration (AUClast) of AMG 598 After Subcutaneous Injection on Day 572130 days*µg/mLStandard Deviation 334
AMG 598 70 mg + LiraglutideArea Under the Concentration-time Curve From Time 0 to Time of Last Quantifiable Concentration (AUClast) of AMG 598 After Subcutaneous Injection on Day 571570 days*µg/mLStandard Deviation 462
AMG 598 210 mgArea Under the Concentration-time Curve From Time 0 to Time of Last Quantifiable Concentration (AUClast) of AMG 598 After Subcutaneous Injection on Day 574060 days*µg/mLStandard Deviation 1610
AMG 598 210 mg + LiraglutideArea Under the Concentration-time Curve From Time 0 to Time of Last Quantifiable Concentration (AUClast) of AMG 598 After Subcutaneous Injection on Day 573060 days*µg/mLStandard Deviation 920
Secondary

Dose-normalized AUC0-28 for AMG 598 After Subcutaneous Injection on Day 1 and Day 57

Serum concentrations of AMG 598 were determined using a validated electrochemiluminescence-based method. The lower limit of quantitation was 50.0 ng/mL.

Time frame: Day 1, predose, and days 6, 8, 15, 22, and 29; Day 57 predose and days 62, 64, 71, and 85

Population: The PK analysis set; participants with available data at each time point.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboDose-normalized AUC0-28 for AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 11.98 days*µg/mL/mgStandard Deviation 0.279
PlaceboDose-normalized AUC0-28 for AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 573.07 days*µg/mL/mgStandard Deviation 0.647
Placebo + LiraglutideDose-normalized AUC0-28 for AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 12.10 days*µg/mL/mgStandard Deviation 0.311
Placebo + LiraglutideDose-normalized AUC0-28 for AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 573.94 days*µg/mL/mgStandard Deviation 0.823
AMG 598 70 mgDose-normalized AUC0-28 for AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 12.36 days*µg/mL/mgStandard Deviation 0.346
AMG 598 70 mgDose-normalized AUC0-28 for AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 574.59 days*µg/mL/mgStandard Deviation 0.966
AMG 598 70 mg + LiraglutideDose-normalized AUC0-28 for AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 11.74 days*µg/mL/mgStandard Deviation 0.48
AMG 598 70 mg + LiraglutideDose-normalized AUC0-28 for AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 573.57 days*µg/mL/mgStandard Deviation 1.21
AMG 598 210 mgDose-normalized AUC0-28 for AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 12.57 days*µg/mL/mgStandard Deviation 0.535
AMG 598 210 mgDose-normalized AUC0-28 for AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 574.75 days*µg/mL/mgStandard Deviation 0.812
AMG 598 210 mg + LiraglutideDose-normalized AUC0-28 for AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 11.82 days*µg/mL/mgStandard Deviation 0.68
AMG 598 210 mg + LiraglutideDose-normalized AUC0-28 for AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 573.84 days*µg/mL/mgStandard Deviation 1.22
Secondary

Dose-normalized Cmax of AMG 598 After Subcutaneous Injection on Day 1 and Day 57

Serum concentrations of AMG 598 were determined using a validated electrochemiluminescence-based method. The lower limit of quantitation was 50.0 ng/mL.

Time frame: Day 1, predose, and days 6, 8, 15, 22, and 29; Day 57 predose and days 62, 64, 71, 85, 99, 113, 127, 169, and 207

Population: The PK analysis set; participants with available data at each time point.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboDose-normalized Cmax of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 10.0833 µg/mL/mgStandard Deviation 0.0239
PlaceboDose-normalized Cmax of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 570.130 µg/mL/mgStandard Deviation 0.0272
Placebo + LiraglutideDose-normalized Cmax of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 10.107 µg/mL/mgStandard Deviation 0.0167
Placebo + LiraglutideDose-normalized Cmax of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 570.172 µg/mL/mgStandard Deviation 0.0366
AMG 598 70 mgDose-normalized Cmax of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 10.102 µg/mL/mgStandard Deviation 0.0258
AMG 598 70 mgDose-normalized Cmax of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 570.216 µg/mL/mgStandard Deviation 0.0593
AMG 598 70 mg + LiraglutideDose-normalized Cmax of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 10.0856 µg/mL/mgStandard Deviation 0.0274
AMG 598 70 mg + LiraglutideDose-normalized Cmax of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 570.168 µg/mL/mgStandard Deviation 0.0572
AMG 598 210 mgDose-normalized Cmax of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 10.122 µg/mL/mgStandard Deviation 0.0231
AMG 598 210 mgDose-normalized Cmax of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 570.222 µg/mL/mgStandard Deviation 0.0433
AMG 598 210 mg + LiraglutideDose-normalized Cmax of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 10.0879 µg/mL/mgStandard Deviation 0.0327
AMG 598 210 mg + LiraglutideDose-normalized Cmax of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 570.172 µg/mL/mgStandard Deviation 0.05949
Secondary

Maximum Observed Concentration (Cmax) of AMG 598 After Subcutaneous Injection on Day 1 and Day 57

Serum concentrations of AMG 598 were determined using a validated electrochemiluminescence-based method. The lower limit of quantitation was 50.0 ng/mL.

Time frame: Day 1, predose, and days 6, 8, 15, 22, and 29; Day 57 predose and days 62, 64, 71, 85, 99, 113, 127, 169, and 207

Population: The pharmacokinetic (PK) analysis set included all participants for whom at least 1 PK parameter or endpoint could be adequately estimated. Participants with available data at each time point.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboMaximum Observed Concentration (Cmax) of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 15.83 µg/mLStandard Deviation 1.67
PlaceboMaximum Observed Concentration (Cmax) of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 579.07 µg/mLStandard Deviation 1.91
Placebo + LiraglutideMaximum Observed Concentration (Cmax) of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 17.49 µg/mLStandard Deviation 1.17
Placebo + LiraglutideMaximum Observed Concentration (Cmax) of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 5712.0 µg/mLStandard Deviation 2.56
AMG 598 70 mgMaximum Observed Concentration (Cmax) of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 121.5 µg/mLStandard Deviation 5.43
AMG 598 70 mgMaximum Observed Concentration (Cmax) of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 5745.4 µg/mLStandard Deviation 12.5
AMG 598 70 mg + LiraglutideMaximum Observed Concentration (Cmax) of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 118.0 µg/mLStandard Deviation 5.76
AMG 598 70 mg + LiraglutideMaximum Observed Concentration (Cmax) of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 5734.8 µg/mLStandard Deviation 12
AMG 598 210 mgMaximum Observed Concentration (Cmax) of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 151.1 µg/mLStandard Deviation 9.7
AMG 598 210 mgMaximum Observed Concentration (Cmax) of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 5793.2 µg/mLStandard Deviation 18.2
AMG 598 210 mg + LiraglutideMaximum Observed Concentration (Cmax) of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 136.9 µg/mLStandard Deviation 13.7
AMG 598 210 mg + LiraglutideMaximum Observed Concentration (Cmax) of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 5772.4 µg/mLStandard Deviation 23
Secondary

Terminal Half-life (T1/2,z) of AMG 598 After Subcutaneous Injection on Day 57

Serum concentrations of AMG 598 were determined using a validated electrochemiluminescence-based method. The lower limit of quantitation was 50.0 ng/mL.

Time frame: Day 57 predose and days 62, 64, 71, 85, 99, 113, 127, 169, and 207

Population: The PK analysis set; participants with available data for T1/2,z

ArmMeasureValue (MEAN)Dispersion
PlaceboTerminal Half-life (T1/2,z) of AMG 598 After Subcutaneous Injection on Day 5728.2 daysStandard Deviation 3.04
Placebo + LiraglutideTerminal Half-life (T1/2,z) of AMG 598 After Subcutaneous Injection on Day 5731.5 daysStandard Deviation 6.05
AMG 598 70 mgTerminal Half-life (T1/2,z) of AMG 598 After Subcutaneous Injection on Day 5735.2 daysStandard Deviation 5.86
AMG 598 70 mg + LiraglutideTerminal Half-life (T1/2,z) of AMG 598 After Subcutaneous Injection on Day 5729.1 daysStandard Deviation 3.02
AMG 598 210 mgTerminal Half-life (T1/2,z) of AMG 598 After Subcutaneous Injection on Day 5735.8 daysStandard Deviation 3.21
AMG 598 210 mg + LiraglutideTerminal Half-life (T1/2,z) of AMG 598 After Subcutaneous Injection on Day 5729.8 daysStandard Deviation 6.72
Secondary

Time to Maximum Observed Concentration (Tmax) of AMG 598 After Subcutaneous Injection on Day 1 and Day 57

Serum concentrations of AMG 598 were determined using a validated electrochemiluminescence-based method. The lower limit of quantitation was 50.0 ng/mL.

Time frame: Day 1, predose, and days 6, 8, 15, 22, and 29; Day 57 predose and days 62, 64, 71, 85, 99, 113, 127, 169, and 207

Population: The PK analysis set; participants with available data at each time point

ArmMeasureGroupValue (MEDIAN)
PlaceboTime to Maximum Observed Concentration (Tmax) of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 17.1 days
PlaceboTime to Maximum Observed Concentration (Tmax) of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 577.0 days
Placebo + LiraglutideTime to Maximum Observed Concentration (Tmax) of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 17.0 days
Placebo + LiraglutideTime to Maximum Observed Concentration (Tmax) of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 577.0 days
AMG 598 70 mgTime to Maximum Observed Concentration (Tmax) of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 17.1 days
AMG 598 70 mgTime to Maximum Observed Concentration (Tmax) of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 576.1 days
AMG 598 70 mg + LiraglutideTime to Maximum Observed Concentration (Tmax) of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 17.0 days
AMG 598 70 mg + LiraglutideTime to Maximum Observed Concentration (Tmax) of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 576.5 days
AMG 598 210 mgTime to Maximum Observed Concentration (Tmax) of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 16.9 days
AMG 598 210 mgTime to Maximum Observed Concentration (Tmax) of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 575.3 days
AMG 598 210 mg + LiraglutideTime to Maximum Observed Concentration (Tmax) of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 17.0 days
AMG 598 210 mg + LiraglutideTime to Maximum Observed Concentration (Tmax) of AMG 598 After Subcutaneous Injection on Day 1 and Day 57Day 577.0 days

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