Trial Outcomes & Findings for Method-of-Use Study Assessing the Effect of Naltrexone Sustained Release (SR)/ Bupropion SR on Body Weight and Cardiovascular Risk Factors in Overweight and Obese Subjects (NCT NCT01764386)

NCT ID: NCT01764386

Last Updated: 2015-12-29

Results Overview

Recruitment status

COMPLETED

Study phase

PHASE3

Target enrollment

242 participants

Primary outcome timeframe

Baseline to Week 26

Results posted on

2015-12-29

Participant Flow

Participant milestones

Participant milestones
Measure
NB + CLI
Naltrexone SR 32 mg/Bupropion SR 360 mg/day (NB) with Comprehensive Lifestyle Intervention (CLI) NB: Naltrexone SR 32 mg/Bupropion SR 360 mg (NB) in combination tablets (daily dosage) CLI: The Comprehensive Lifestyle Intervention (CLI) program included telephone counseling, internet education, goal setting, and online tracking tools. The Controlled Treatment Period was from Day 1 to Week 26. The Uncontrolled Treatment Period was from Week 26 to Week 78. At the end of the Controlled Treatment Period (Week 26), subjects assigned to NB+CLI continued with NB+CLI for the duration of the study (Week 78).
Usual Care
Usual Care (self-directed lifestyle intervention) Usual Care: Usual Care was a self-directed lifestyle intervention in which subjects were given calorie targets, instructions to increase exercise, and a pamphlet about weight loss by study site staff. The Controlled Treatment Period was from Day 1 to Week 26. The Uncontrolled Treatment Period was from Week 26 to Week 78. At the end of the Controlled Treatment Period (Week 26), subjects assigned to Usual Care were switched to NB+CLI for the duration of the study (Week 78).
Controlled Treatment Period (CTP)
STARTED
153
89
Controlled Treatment Period (CTP)
COMPLETED
71
82
Controlled Treatment Period (CTP)
NOT COMPLETED
82
7
Uncontrolled Treatment Period (UTP)
STARTED
71
81
Uncontrolled Treatment Period (UTP)
Completed 52 Weeks
61
35
Uncontrolled Treatment Period (UTP)
COMPLETED
55
28
Uncontrolled Treatment Period (UTP)
NOT COMPLETED
16
53

Reasons for withdrawal

Reasons for withdrawal
Measure
NB + CLI
Naltrexone SR 32 mg/Bupropion SR 360 mg/day (NB) with Comprehensive Lifestyle Intervention (CLI) NB: Naltrexone SR 32 mg/Bupropion SR 360 mg (NB) in combination tablets (daily dosage) CLI: The Comprehensive Lifestyle Intervention (CLI) program included telephone counseling, internet education, goal setting, and online tracking tools. The Controlled Treatment Period was from Day 1 to Week 26. The Uncontrolled Treatment Period was from Week 26 to Week 78. At the end of the Controlled Treatment Period (Week 26), subjects assigned to NB+CLI continued with NB+CLI for the duration of the study (Week 78).
Usual Care
Usual Care (self-directed lifestyle intervention) Usual Care: Usual Care was a self-directed lifestyle intervention in which subjects were given calorie targets, instructions to increase exercise, and a pamphlet about weight loss by study site staff. The Controlled Treatment Period was from Day 1 to Week 26. The Uncontrolled Treatment Period was from Week 26 to Week 78. At the end of the Controlled Treatment Period (Week 26), subjects assigned to Usual Care were switched to NB+CLI for the duration of the study (Week 78).
Controlled Treatment Period (CTP)
Adverse Event
35
0
Controlled Treatment Period (CTP)
Wk 16 Efficacy and BP Criteria
32
0
Controlled Treatment Period (CTP)
Lost to Follow-up
9
5
Controlled Treatment Period (CTP)
Withdrawal of Consent,Protocol Deviation
6
2
Uncontrolled Treatment Period (UTP)
Adverse Event
2
13
Uncontrolled Treatment Period (UTP)
Wk 42 Efficacy and BP Criteria
0
26
Uncontrolled Treatment Period (UTP)
Lost to Follow-up
9
9
Uncontrolled Treatment Period (UTP)
Withdrawal of Consent,Protocol Deviation
5
5

Baseline Characteristics

Method-of-Use Study Assessing the Effect of Naltrexone Sustained Release (SR)/ Bupropion SR on Body Weight and Cardiovascular Risk Factors in Overweight and Obese Subjects

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
NB + CLI
n=153 Participants
Naltrexone SR 32 mg/Bupropion SR 360 mg/day (NB) with Comprehensive Lifestyle Intervention (CLI) NB: Naltrexone SR 32 mg/Bupropion SR 360 mg (NB) in combination tablets (daily dosage) CLI: The Comprehensive Lifestyle Intervention (CLI) program included telephone counseling, internet education, goal setting, and online tracking tools.
Usual Care
n=89 Participants
Usual Care (self-directed lifestyle intervention) Usual Care: Usual Care was a self-directed lifestyle intervention in which subjects were given calorie targets, instructions to increase exercise, and a pamphlet about weight loss by study site staff.
Total
n=242 Participants
Total of all reporting groups
Age, Continuous
46.1 years
STANDARD_DEVIATION 9.66 • n=5 Participants
47.0 years
STANDARD_DEVIATION 9.98 • n=7 Participants
46.5 years
STANDARD_DEVIATION 9.77 • n=5 Participants
Sex: Female, Male
Female
125 Participants
n=5 Participants
77 Participants
n=7 Participants
202 Participants
n=5 Participants
Sex: Female, Male
Male
28 Participants
n=5 Participants
12 Participants
n=7 Participants
40 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
4 Participants
n=5 Participants
5 Participants
n=7 Participants
9 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
149 Participants
n=5 Participants
84 Participants
n=7 Participants
233 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=5 Participants
1 Participants
n=7 Participants
1 Participants
n=5 Participants
Race (NIH/OMB)
Asian
1 Participants
n=5 Participants
0 Participants
n=7 Participants
1 Participants
n=5 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
Black or African American
28 Participants
n=5 Participants
24 Participants
n=7 Participants
52 Participants
n=5 Participants
Race (NIH/OMB)
White
124 Participants
n=5 Participants
64 Participants
n=7 Participants
188 Participants
n=5 Participants
Race (NIH/OMB)
More than one race
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Region of Enrollment
United States
153 participants
n=5 Participants
89 participants
n=7 Participants
242 participants
n=5 Participants
Weight
101.4 kg
STANDARD_DEVIATION 15.09 • n=5 Participants
100.2 kg
STANDARD_DEVIATION 16.58 • n=7 Participants
100.9 kg
STANDARD_DEVIATION 15.63 • n=5 Participants
Baseline BMI
36.33 kg/m^2
STANDARD_DEVIATION 4.200 • n=5 Participants
36.26 kg/m^2
STANDARD_DEVIATION 4.369 • n=7 Participants
36.31 kg/m^2
STANDARD_DEVIATION 4.254 • n=5 Participants

PRIMARY outcome

Timeframe: Baseline to Week 26

Population: The Week 26 Per Protocol (PP) population comprised subjects from the mITT population (i.e., ITT subjects with their Week 2 study visit, with baseline \[BL\] and at least 1 post-BL body weight measured) who had completed the study through Week 26 in compliance with the protocol. Subjects in the NB + CLI group had to be on study medication at Week 26.

Outcome measures

Outcome measures
Measure
NB + CLI
n=71 Participants
Naltrexone SR 32 mg/Bupropion SR 360 mg/day (NB) with Comprehensive Lifestyle Intervention (CLI) NB: Naltrexone SR 32 mg/Bupropion SR 360 mg (NB) in combination tablets (daily dosage) CLI: The Comprehensive Lifestyle Intervention (CLI) program included telephone counseling, internet education, goal setting, and online tracking tools.
Usual Care
n=82 Participants
Usual Care (self-directed lifestyle intervention) Usual Care: Usual Care was a self-directed lifestyle intervention in which subjects were given calorie targets, instructions to increase exercise, and a pamphlet about weight loss by study site staff.
Percent Change in Body Weight From Baseline (Day 1) to Week 26
-9.46 percent change in body weight
Standard Error 0.54
-0.94 percent change in body weight
Standard Error 0.49

SECONDARY outcome

Timeframe: Baseline to Week 26

Population: The Week 26 Per Protocol (PP) population comprised subjects from the mITT population (i.e., ITT subjects with their Week 2 study visit, with baseline \[BL\] and at least 1 post-BL body weight measured) who had completed the study through Week 26 in compliance with the protocol. Subjects in the NB + CLI group had to be on study medication at Week 26.

Outcome measures

Outcome measures
Measure
NB + CLI
n=71 Participants
Naltrexone SR 32 mg/Bupropion SR 360 mg/day (NB) with Comprehensive Lifestyle Intervention (CLI) NB: Naltrexone SR 32 mg/Bupropion SR 360 mg (NB) in combination tablets (daily dosage) CLI: The Comprehensive Lifestyle Intervention (CLI) program included telephone counseling, internet education, goal setting, and online tracking tools.
Usual Care
n=82 Participants
Usual Care (self-directed lifestyle intervention) Usual Care: Usual Care was a self-directed lifestyle intervention in which subjects were given calorie targets, instructions to increase exercise, and a pamphlet about weight loss by study site staff.
Percentage of Subjects Achieving a Loss of at Least 5% of Baseline Body Weight at Week 26
84.5 percentage of participants
12.2 percentage of participants

SECONDARY outcome

Timeframe: Baseline to Week 26

Population: The Week 26 Per Protocol (PP) population comprised subjects from the mITT population (i.e., ITT subjects with their Week 2 study visit, with baseline \[BL\] and at least 1 post-BL body weight measured) who had completed the study through Week 26 in compliance with the protocol. Subjects in the NB + CLI group had to be on study medication at Week 26.

Outcome measures

Outcome measures
Measure
NB + CLI
n=71 Participants
Naltrexone SR 32 mg/Bupropion SR 360 mg/day (NB) with Comprehensive Lifestyle Intervention (CLI) NB: Naltrexone SR 32 mg/Bupropion SR 360 mg (NB) in combination tablets (daily dosage) CLI: The Comprehensive Lifestyle Intervention (CLI) program included telephone counseling, internet education, goal setting, and online tracking tools.
Usual Care
n=82 Participants
Usual Care (self-directed lifestyle intervention) Usual Care: Usual Care was a self-directed lifestyle intervention in which subjects were given calorie targets, instructions to increase exercise, and a pamphlet about weight loss by study site staff.
Percentage of Subjects Achieving a Loss of at Least 10% of Baseline Body Weight at Week 26
42.3 percentage of participants
3.7 percentage of participants

SECONDARY outcome

Timeframe: Baseline to Week 26

Population: The Week 26 Per Protocol (PP) population comprised subjects from the mITT population (i.e., ITT subjects with their Week 2 study visit, with baseline \[BL\] and at least 1 post-BL body weight measured) who had completed the study through Week 26 in compliance with the protocol. Subjects in the NB + CLI group had to be on study medication at Week 26.

Outcome measures

Outcome measures
Measure
NB + CLI
n=71 Participants
Naltrexone SR 32 mg/Bupropion SR 360 mg/day (NB) with Comprehensive Lifestyle Intervention (CLI) NB: Naltrexone SR 32 mg/Bupropion SR 360 mg (NB) in combination tablets (daily dosage) CLI: The Comprehensive Lifestyle Intervention (CLI) program included telephone counseling, internet education, goal setting, and online tracking tools.
Usual Care
n=82 Participants
Usual Care (self-directed lifestyle intervention) Usual Care: Usual Care was a self-directed lifestyle intervention in which subjects were given calorie targets, instructions to increase exercise, and a pamphlet about weight loss by study site staff.
Percentage of Subjects Achieving a Loss of at Least 15% of Baseline Body Weight at Week 26
12.7 percentage of participants
0.0 percentage of participants

SECONDARY outcome

Timeframe: Baseline to Week 26

Population: The Week 26 Per Protocol (PP) population comprised subjects from the mITT population (i.e., ITT subjects with their Week 2 study visit, with baseline \[BL\] and at least 1 post-BL body weight measured) who had completed the study through Week 26 in compliance with the protocol. Subjects in the NB + CLI group had to be on study medication at Week 26.

Outcome measures

Outcome measures
Measure
NB + CLI
n=71 Participants
Naltrexone SR 32 mg/Bupropion SR 360 mg/day (NB) with Comprehensive Lifestyle Intervention (CLI) NB: Naltrexone SR 32 mg/Bupropion SR 360 mg (NB) in combination tablets (daily dosage) CLI: The Comprehensive Lifestyle Intervention (CLI) program included telephone counseling, internet education, goal setting, and online tracking tools.
Usual Care
n=82 Participants
Usual Care (self-directed lifestyle intervention) Usual Care: Usual Care was a self-directed lifestyle intervention in which subjects were given calorie targets, instructions to increase exercise, and a pamphlet about weight loss by study site staff.
Absolute Change in Body Weight From Baseline to Week 26
-9.7 kg
Standard Error 0.56
-1.0 kg
Standard Error 0.51

SECONDARY outcome

Timeframe: Baseline to Week 26

Population: The Week 26 Per Protocol (PP) population comprised subjects from the mITT population (i.e., ITT subjects with their Week 2 study visit, with baseline \[BL\] and at least 1 post-BL body weight measured) who had completed the study through Week 26 in compliance with the protocol. Subjects in the NB + CLI group had to be on study medication at Week 26.

Outcome measures

Outcome measures
Measure
NB + CLI
n=71 Participants
Naltrexone SR 32 mg/Bupropion SR 360 mg/day (NB) with Comprehensive Lifestyle Intervention (CLI) NB: Naltrexone SR 32 mg/Bupropion SR 360 mg (NB) in combination tablets (daily dosage) CLI: The Comprehensive Lifestyle Intervention (CLI) program included telephone counseling, internet education, goal setting, and online tracking tools.
Usual Care
n=82 Participants
Usual Care (self-directed lifestyle intervention) Usual Care: Usual Care was a self-directed lifestyle intervention in which subjects were given calorie targets, instructions to increase exercise, and a pamphlet about weight loss by study site staff.
Change in Waist Circumference From Baseline to Week 26
-6.96 cm
Standard Error 0.705
-1.64 cm
Standard Error 0.659

SECONDARY outcome

Timeframe: Baseline to Week 26

Population: The Week 26 Per Protocol (PP) population comprised subjects from the mITT population (i.e., ITT subjects with their Week 2 study visit, with baseline \[BL\] and at least 1 post-BL body weight measured) who had completed the study through Week 26 in compliance with the protocol. Subjects in the NB + CLI group had to be on study medication at Week 26.

Outcome measures

Outcome measures
Measure
NB + CLI
n=71 Participants
Naltrexone SR 32 mg/Bupropion SR 360 mg/day (NB) with Comprehensive Lifestyle Intervention (CLI) NB: Naltrexone SR 32 mg/Bupropion SR 360 mg (NB) in combination tablets (daily dosage) CLI: The Comprehensive Lifestyle Intervention (CLI) program included telephone counseling, internet education, goal setting, and online tracking tools.
Usual Care
n=82 Participants
Usual Care (self-directed lifestyle intervention) Usual Care: Usual Care was a self-directed lifestyle intervention in which subjects were given calorie targets, instructions to increase exercise, and a pamphlet about weight loss by study site staff.
Change in Fasting Triglycerides From Baseline to Week 26
-13.6 mg/dL
Standard Error 4.96
2.8 mg/dL
Standard Error 4.63

SECONDARY outcome

Timeframe: Baseline to Week 26

Population: The Week 26 Per Protocol (PP) population comprised subjects from the mITT population (i.e., ITT subjects with their Week 2 study visit, with baseline \[BL\] and at least 1 post-BL body weight measured) who had completed the study through Week 26 in compliance with the protocol. Subjects in the NB + CLI group had to be on study medication at Week 26.

Outcome measures

Outcome measures
Measure
NB + CLI
n=71 Participants
Naltrexone SR 32 mg/Bupropion SR 360 mg/day (NB) with Comprehensive Lifestyle Intervention (CLI) NB: Naltrexone SR 32 mg/Bupropion SR 360 mg (NB) in combination tablets (daily dosage) CLI: The Comprehensive Lifestyle Intervention (CLI) program included telephone counseling, internet education, goal setting, and online tracking tools.
Usual Care
n=82 Participants
Usual Care (self-directed lifestyle intervention) Usual Care: Usual Care was a self-directed lifestyle intervention in which subjects were given calorie targets, instructions to increase exercise, and a pamphlet about weight loss by study site staff.
Change in Fasting Low-density Lipoprotein Cholesterol From Baseline to Week 26
-2.0 mg/dL
Standard Error 2.20
-1.9 mg/dL
Standard Error 2.11

SECONDARY outcome

Timeframe: Baseline to Week 26

Population: The Week 26 Per Protocol (PP) population comprised subjects from the mITT population (i.e., ITT subjects with their Week 2 study visit, with baseline \[BL\] and at least 1 post-BL body weight measured) who had completed the study through Week 26 in compliance with the protocol. Subjects in the NB + CLI group had to be on study medication at Week 26.

Outcome measures

Outcome measures
Measure
NB + CLI
n=71 Participants
Naltrexone SR 32 mg/Bupropion SR 360 mg/day (NB) with Comprehensive Lifestyle Intervention (CLI) NB: Naltrexone SR 32 mg/Bupropion SR 360 mg (NB) in combination tablets (daily dosage) CLI: The Comprehensive Lifestyle Intervention (CLI) program included telephone counseling, internet education, goal setting, and online tracking tools.
Usual Care
n=82 Participants
Usual Care (self-directed lifestyle intervention) Usual Care: Usual Care was a self-directed lifestyle intervention in which subjects were given calorie targets, instructions to increase exercise, and a pamphlet about weight loss by study site staff.
Change in Fasting High-density Lipoprotein Cholesterol From Baseline to Week 26
4.1 mg/dL
Standard Error 0.77
0.1 mg/dL
Standard Error 0.73

SECONDARY outcome

Timeframe: Baseline to Week 26

Population: The Week 26 Per Protocol (PP) population comprised subjects from the mITT population (i.e., ITT subjects with their Week 2 study visit, with baseline \[BL\] and at least 1 post-BL body weight measured) who had completed the study through Week 26 in compliance with the protocol. Subjects in the NB + CLI group had to be on study medication at Week 26.

Outcome measures

Outcome measures
Measure
NB + CLI
n=71 Participants
Naltrexone SR 32 mg/Bupropion SR 360 mg/day (NB) with Comprehensive Lifestyle Intervention (CLI) NB: Naltrexone SR 32 mg/Bupropion SR 360 mg (NB) in combination tablets (daily dosage) CLI: The Comprehensive Lifestyle Intervention (CLI) program included telephone counseling, internet education, goal setting, and online tracking tools.
Usual Care
n=82 Participants
Usual Care (self-directed lifestyle intervention) Usual Care: Usual Care was a self-directed lifestyle intervention in which subjects were given calorie targets, instructions to increase exercise, and a pamphlet about weight loss by study site staff.
Change in Systolic Blood Pressure From Baseline to Week 26
-4.8 mm Hg
Standard Error 1.10
-2.8 mm Hg
Standard Error 1.02

SECONDARY outcome

Timeframe: Baseline to Week 26

Population: The Week 26 Per Protocol (PP) population comprised subjects from the mITT population (i.e., ITT subjects with their Week 2 study visit, with baseline \[BL\] and at least 1 post-BL body weight measured) who had completed the study through Week 26 in compliance with the protocol. Subjects in the NB + CLI group had to be on study medication at Week 26.

Outcome measures

Outcome measures
Measure
NB + CLI
n=71 Participants
Naltrexone SR 32 mg/Bupropion SR 360 mg/day (NB) with Comprehensive Lifestyle Intervention (CLI) NB: Naltrexone SR 32 mg/Bupropion SR 360 mg (NB) in combination tablets (daily dosage) CLI: The Comprehensive Lifestyle Intervention (CLI) program included telephone counseling, internet education, goal setting, and online tracking tools.
Usual Care
n=82 Participants
Usual Care (self-directed lifestyle intervention) Usual Care: Usual Care was a self-directed lifestyle intervention in which subjects were given calorie targets, instructions to increase exercise, and a pamphlet about weight loss by study site staff.
Change in Diastolic Blood Pressure From Baseline to Week 26
-1.7 mm Hg
Standard Error 0.83
-1.3 mm Hg
Standard Error 0.77

SECONDARY outcome

Timeframe: Baseline to Week 26

Population: The Week 26 Per Protocol (PP) population comprised subjects from the mITT population (i.e., ITT subjects with their Week 2 study visit, with baseline \[BL\] and at least 1 post-BL body weight measured) who had completed the study through Week 26 in compliance with the protocol. Subjects in the NB + CLI group had to be on study medication at Week 26.

Outcome measures

Outcome measures
Measure
NB + CLI
n=71 Participants
Naltrexone SR 32 mg/Bupropion SR 360 mg/day (NB) with Comprehensive Lifestyle Intervention (CLI) NB: Naltrexone SR 32 mg/Bupropion SR 360 mg (NB) in combination tablets (daily dosage) CLI: The Comprehensive Lifestyle Intervention (CLI) program included telephone counseling, internet education, goal setting, and online tracking tools.
Usual Care
n=82 Participants
Usual Care (self-directed lifestyle intervention) Usual Care: Usual Care was a self-directed lifestyle intervention in which subjects were given calorie targets, instructions to increase exercise, and a pamphlet about weight loss by study site staff.
Change in Heart Rate From Baseline to Week 26
1.7 bpm
Standard Error 0.88
-0.3 bpm
Standard Error 0.82

SECONDARY outcome

Timeframe: Baseline to Week 26

Population: The Week 26 Per Protocol (PP) population comprised subjects from the mITT population (i.e., ITT subjects with their Week 2 study visit, with baseline \[BL\] and at least 1 post-BL body weight measured) who had completed the study through Week 26 in compliance with the protocol. Subjects in the NB + CLI group had to be on study medication at Week 26.

Outcome measures

Outcome measures
Measure
NB + CLI
n=71 Participants
Naltrexone SR 32 mg/Bupropion SR 360 mg/day (NB) with Comprehensive Lifestyle Intervention (CLI) NB: Naltrexone SR 32 mg/Bupropion SR 360 mg (NB) in combination tablets (daily dosage) CLI: The Comprehensive Lifestyle Intervention (CLI) program included telephone counseling, internet education, goal setting, and online tracking tools.
Usual Care
n=82 Participants
Usual Care (self-directed lifestyle intervention) Usual Care: Usual Care was a self-directed lifestyle intervention in which subjects were given calorie targets, instructions to increase exercise, and a pamphlet about weight loss by study site staff.
Change in Fasting Plasma Glucose From Baseline to Week 26
-2.9 mg/dL
Standard Error 1.04
1.6 mg/dL
Standard Error 0.96

SECONDARY outcome

Timeframe: Baseline to Week 26

Population: The Week 26 Per Protocol (PP) population comprised subjects from the mITT population (i.e., ITT subjects with their Week 2 study visit, with baseline \[BL\] and at least 1 post-BL body weight measured) who had completed the study through Week 26 in compliance with the protocol. Subjects in the NB + CLI group had to be on study medication at Week 26.

Outcome measures

Outcome measures
Measure
NB + CLI
n=71 Participants
Naltrexone SR 32 mg/Bupropion SR 360 mg/day (NB) with Comprehensive Lifestyle Intervention (CLI) NB: Naltrexone SR 32 mg/Bupropion SR 360 mg (NB) in combination tablets (daily dosage) CLI: The Comprehensive Lifestyle Intervention (CLI) program included telephone counseling, internet education, goal setting, and online tracking tools.
Usual Care
n=82 Participants
Usual Care (self-directed lifestyle intervention) Usual Care: Usual Care was a self-directed lifestyle intervention in which subjects were given calorie targets, instructions to increase exercise, and a pamphlet about weight loss by study site staff.
Change Fasting Insulin From Baseline to Week 26
-7.5 uIU/mL
Standard Error 0.79
-3.4 uIU/mL
Standard Error 0.76

SECONDARY outcome

Timeframe: Baseline to Week 26

Population: The Week 26 Per Protocol (PP) population comprised subjects from the mITT population (i.e., ITT subjects with their Week 2 study visit, with baseline \[BL\] and at least 1 post-BL body weight measured) who had completed the study through Week 26 in compliance with the protocol. Subjects in the NB + CLI group had to be on study medication at Week 26.

HOMA-IR is an insulin sensitivity index that is calculated as HOMA-IR = (Glucose \* Insulin) / 405, where glucose is in mass units (mg/dL) and insulin is in µIU/mL. Higher values indicate lower insulin sensitivity.

Outcome measures

Outcome measures
Measure
NB + CLI
n=71 Participants
Naltrexone SR 32 mg/Bupropion SR 360 mg/day (NB) with Comprehensive Lifestyle Intervention (CLI) NB: Naltrexone SR 32 mg/Bupropion SR 360 mg (NB) in combination tablets (daily dosage) CLI: The Comprehensive Lifestyle Intervention (CLI) program included telephone counseling, internet education, goal setting, and online tracking tools.
Usual Care
n=82 Participants
Usual Care (self-directed lifestyle intervention) Usual Care: Usual Care was a self-directed lifestyle intervention in which subjects were given calorie targets, instructions to increase exercise, and a pamphlet about weight loss by study site staff.
Change in Homeostasis Model Assessment-insulin Resistance (HOMA-IR) From Baseline to Week 26
-2.0 units on a scale
Standard Error 0.20
-0.8 units on a scale
Standard Error 0.19

SECONDARY outcome

Timeframe: Baseline to Week 26

Population: The Week 26 Per Protocol (PP) population comprised subjects from the mITT population (i.e., ITT subjects with their Week 2 study visit, with baseline \[BL\] and at least 1 post-BL body weight measured) who had completed the study through Week 26 in compliance with the protocol. Subjects in the NB + CLI group had to be on study medication at Week 26.

The BES is a 16-item questionnaire that identifies different levels of binge-eating severity, with total scores ranging between 0-46. BES scores were categorized as follows: None = Scores ≤17 indicated no significant binge eating, Moderate = scores from 18 to 26 (inclusive), Severe = scores ≥27 indicated severe levels of binge eating.

Outcome measures

Outcome measures
Measure
NB + CLI
n=71 Participants
Naltrexone SR 32 mg/Bupropion SR 360 mg/day (NB) with Comprehensive Lifestyle Intervention (CLI) NB: Naltrexone SR 32 mg/Bupropion SR 360 mg (NB) in combination tablets (daily dosage) CLI: The Comprehensive Lifestyle Intervention (CLI) program included telephone counseling, internet education, goal setting, and online tracking tools.
Usual Care
n=82 Participants
Usual Care (self-directed lifestyle intervention) Usual Care: Usual Care was a self-directed lifestyle intervention in which subjects were given calorie targets, instructions to increase exercise, and a pamphlet about weight loss by study site staff.
Change in Patient-reported Binge Eating Scale (BES) Total Scores From Baseline to Week 26
-6.8 units on a scale
Standard Error 0.72
1.1 units on a scale
Standard Error 0.67

SECONDARY outcome

Timeframe: Baseline to Week 26

Population: The Week 26 Per Protocol (PP) population comprised subjects from the mITT population (i.e., ITT subjects with their Week 2 study visit, with baseline \[BL\] and at least 1 post-BL body weight measured) who had completed the study through Week 26 in compliance with the protocol. Subjects in the NB + CLI group had to be on study medication at Week 26.

Arizona Sexual Experiences (ASEX) scale is a 5-item rating scale that quantifies sex drive, arousal, vaginal lubrication/penile erection, ability to reach orgasm, and satisfaction from orgasm. Possible total scores range from 5 to 30, with the higher scores indicating more sexual dysfunction.

Outcome measures

Outcome measures
Measure
NB + CLI
n=71 Participants
Naltrexone SR 32 mg/Bupropion SR 360 mg/day (NB) with Comprehensive Lifestyle Intervention (CLI) NB: Naltrexone SR 32 mg/Bupropion SR 360 mg (NB) in combination tablets (daily dosage) CLI: The Comprehensive Lifestyle Intervention (CLI) program included telephone counseling, internet education, goal setting, and online tracking tools.
Usual Care
n=82 Participants
Usual Care (self-directed lifestyle intervention) Usual Care: Usual Care was a self-directed lifestyle intervention in which subjects were given calorie targets, instructions to increase exercise, and a pamphlet about weight loss by study site staff.
Change in Patient-reported Arizona Sexual Experiences Scale (ASEX) Total Scores From Baseline to Week 26
-2.2 units on a scale
Standard Error 0.36
-0.1 units on a scale
Standard Error 0.34

SECONDARY outcome

Timeframe: Baseline to Week 26

Population: The Week 26 Per Protocol (PP) population comprised subjects from the mITT population (i.e., ITT subjects with their Week 2 study visit, with baseline \[BL\] and at least 1 post-BL body weight measured) who had completed the study through Week 26 in compliance with the protocol. Subjects in the NB + CLI group had to be on study medication at Week 26.

Impact of Weight on Quality of Life-Lite Questionnaire (IWQOL-Lite) is a self-reported assessment of perceived effect of weight on quality of life. It consists of 31 items organized in 5 domains (physical function, self-esteem, sexual life, public distress and work). IWQOL-Lite total score is based on a scale from 0 to 100, with 0 representing the poorest and 100 the best quality of life and where a score of 71-79 indicates moderate impairment.

Outcome measures

Outcome measures
Measure
NB + CLI
n=71 Participants
Naltrexone SR 32 mg/Bupropion SR 360 mg/day (NB) with Comprehensive Lifestyle Intervention (CLI) NB: Naltrexone SR 32 mg/Bupropion SR 360 mg (NB) in combination tablets (daily dosage) CLI: The Comprehensive Lifestyle Intervention (CLI) program included telephone counseling, internet education, goal setting, and online tracking tools.
Usual Care
n=82 Participants
Usual Care (self-directed lifestyle intervention) Usual Care: Usual Care was a self-directed lifestyle intervention in which subjects were given calorie targets, instructions to increase exercise, and a pamphlet about weight loss by study site staff.
Change in Patient-reported Impact of Weight on Quality of Life-Lite Questionnaire (IWQOL-Lite) Total Score From Baseline to Week 26
16.4 units on a scale
Standard Error 1.50
-1.0 units on a scale
Standard Error 1.41

Adverse Events

NB + CLI (Controlled Treatment Period)

Serious events: 1 serious events
Other events: 26 other events
Deaths: 0 deaths

Usual Care (Controlled Treatment Period)

Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths

All Subjects (Entire Study)

Serious events: 2 serious events
Other events: 32 other events
Deaths: 0 deaths

Serious adverse events

Serious adverse events
Measure
NB + CLI (Controlled Treatment Period)
n=153 participants at risk
Naltrexone SR 32 mg/Bupropion SR 360 mg/day (NB) with Comprehensive Lifestyle Intervention (CLI) NB: Naltrexone SR 32 mg/Bupropion SR 360 mg (NB) in combination tablets (daily dosage) CLI: The Comprehensive Lifestyle Intervention (CLI) program included telephone counseling, internet education, goal setting, and online tracking tools. The Controlled Treatment Period was from Day 1 to Week 26.
Usual Care (Controlled Treatment Period)
n=89 participants at risk
Usual Care (self-directed lifestyle intervention) Usual Care: Usual Care was a self-directed lifestyle intervention in which subjects were given calorie targets, instructions to increase exercise, and a pamphlet about weight loss by study site staff. The Controlled Treatment Period was from Day 1 to Week 26.
All Subjects (Entire Study)
n=242 participants at risk
Naltrexone SR 32 mg/Bupropion SR 360 mg/day (NB) with Comprehensive Lifestyle Intervention (CLI) NB: Naltrexone SR 32 mg/Bupropion SR 360 mg (NB) in combination tablets (daily dosage) CLI: The Comprehensive Lifestyle Intervention (CLI) program included telephone counseling, internet education, goal setting, and online tracking tools. All Subjects (Entire Study) consisted of all subjects in both the Controlled and Uncontrolled Treatment Periods. At the end of the Controlled Treatment Period (Week 26), subjects assigned to NB+CLI continued with NB+CLI for the duration of the study and subjects assigned to Usual Care were switched to NB+CLI for the duration of the study.
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
Breast cancer
0.65%
1/153 • Number of events 1 • Day 1 through Week 78
Only serious adverse events (SAE) and treatment-emergent adverse events (TEAE) leading to discontinuation from full participation were collected in this study. The 1% frequency threshold for reporting other adverse events is based on All Subjects (Entire Study) column.
0.00%
0/89 • Day 1 through Week 78
Only serious adverse events (SAE) and treatment-emergent adverse events (TEAE) leading to discontinuation from full participation were collected in this study. The 1% frequency threshold for reporting other adverse events is based on All Subjects (Entire Study) column.
0.83%
2/242 • Number of events 2 • Day 1 through Week 78
Only serious adverse events (SAE) and treatment-emergent adverse events (TEAE) leading to discontinuation from full participation were collected in this study. The 1% frequency threshold for reporting other adverse events is based on All Subjects (Entire Study) column.

Other adverse events

Other adverse events
Measure
NB + CLI (Controlled Treatment Period)
n=153 participants at risk
Naltrexone SR 32 mg/Bupropion SR 360 mg/day (NB) with Comprehensive Lifestyle Intervention (CLI) NB: Naltrexone SR 32 mg/Bupropion SR 360 mg (NB) in combination tablets (daily dosage) CLI: The Comprehensive Lifestyle Intervention (CLI) program included telephone counseling, internet education, goal setting, and online tracking tools. The Controlled Treatment Period was from Day 1 to Week 26.
Usual Care (Controlled Treatment Period)
n=89 participants at risk
Usual Care (self-directed lifestyle intervention) Usual Care: Usual Care was a self-directed lifestyle intervention in which subjects were given calorie targets, instructions to increase exercise, and a pamphlet about weight loss by study site staff. The Controlled Treatment Period was from Day 1 to Week 26.
All Subjects (Entire Study)
n=242 participants at risk
Naltrexone SR 32 mg/Bupropion SR 360 mg/day (NB) with Comprehensive Lifestyle Intervention (CLI) NB: Naltrexone SR 32 mg/Bupropion SR 360 mg (NB) in combination tablets (daily dosage) CLI: The Comprehensive Lifestyle Intervention (CLI) program included telephone counseling, internet education, goal setting, and online tracking tools. All Subjects (Entire Study) consisted of all subjects in both the Controlled and Uncontrolled Treatment Periods. At the end of the Controlled Treatment Period (Week 26), subjects assigned to NB+CLI continued with NB+CLI for the duration of the study and subjects assigned to Usual Care were switched to NB+CLI for the duration of the study.
Gastrointestinal disorders
Nausea
10.5%
16/153 • Number of events 16 • Day 1 through Week 78
Only serious adverse events (SAE) and treatment-emergent adverse events (TEAE) leading to discontinuation from full participation were collected in this study. The 1% frequency threshold for reporting other adverse events is based on All Subjects (Entire Study) column.
0.00%
0/89 • Day 1 through Week 78
Only serious adverse events (SAE) and treatment-emergent adverse events (TEAE) leading to discontinuation from full participation were collected in this study. The 1% frequency threshold for reporting other adverse events is based on All Subjects (Entire Study) column.
7.0%
17/242 • Number of events 17 • Day 1 through Week 78
Only serious adverse events (SAE) and treatment-emergent adverse events (TEAE) leading to discontinuation from full participation were collected in this study. The 1% frequency threshold for reporting other adverse events is based on All Subjects (Entire Study) column.
Psychiatric disorders
Anxiety
3.3%
5/153 • Number of events 5 • Day 1 through Week 78
Only serious adverse events (SAE) and treatment-emergent adverse events (TEAE) leading to discontinuation from full participation were collected in this study. The 1% frequency threshold for reporting other adverse events is based on All Subjects (Entire Study) column.
0.00%
0/89 • Day 1 through Week 78
Only serious adverse events (SAE) and treatment-emergent adverse events (TEAE) leading to discontinuation from full participation were collected in this study. The 1% frequency threshold for reporting other adverse events is based on All Subjects (Entire Study) column.
2.1%
5/242 • Number of events 5 • Day 1 through Week 78
Only serious adverse events (SAE) and treatment-emergent adverse events (TEAE) leading to discontinuation from full participation were collected in this study. The 1% frequency threshold for reporting other adverse events is based on All Subjects (Entire Study) column.
Nervous system disorders
Headache
1.3%
2/153 • Number of events 2 • Day 1 through Week 78
Only serious adverse events (SAE) and treatment-emergent adverse events (TEAE) leading to discontinuation from full participation were collected in this study. The 1% frequency threshold for reporting other adverse events is based on All Subjects (Entire Study) column.
0.00%
0/89 • Day 1 through Week 78
Only serious adverse events (SAE) and treatment-emergent adverse events (TEAE) leading to discontinuation from full participation were collected in this study. The 1% frequency threshold for reporting other adverse events is based on All Subjects (Entire Study) column.
1.7%
4/242 • Number of events 4 • Day 1 through Week 78
Only serious adverse events (SAE) and treatment-emergent adverse events (TEAE) leading to discontinuation from full participation were collected in this study. The 1% frequency threshold for reporting other adverse events is based on All Subjects (Entire Study) column.
Psychiatric disorders
Insomnia
1.3%
2/153 • Number of events 2 • Day 1 through Week 78
Only serious adverse events (SAE) and treatment-emergent adverse events (TEAE) leading to discontinuation from full participation were collected in this study. The 1% frequency threshold for reporting other adverse events is based on All Subjects (Entire Study) column.
0.00%
0/89 • Day 1 through Week 78
Only serious adverse events (SAE) and treatment-emergent adverse events (TEAE) leading to discontinuation from full participation were collected in this study. The 1% frequency threshold for reporting other adverse events is based on All Subjects (Entire Study) column.
1.2%
3/242 • Number of events 3 • Day 1 through Week 78
Only serious adverse events (SAE) and treatment-emergent adverse events (TEAE) leading to discontinuation from full participation were collected in this study. The 1% frequency threshold for reporting other adverse events is based on All Subjects (Entire Study) column.
Nervous system disorders
Dizziness
0.65%
1/153 • Number of events 1 • Day 1 through Week 78
Only serious adverse events (SAE) and treatment-emergent adverse events (TEAE) leading to discontinuation from full participation were collected in this study. The 1% frequency threshold for reporting other adverse events is based on All Subjects (Entire Study) column.
0.00%
0/89 • Day 1 through Week 78
Only serious adverse events (SAE) and treatment-emergent adverse events (TEAE) leading to discontinuation from full participation were collected in this study. The 1% frequency threshold for reporting other adverse events is based on All Subjects (Entire Study) column.
1.2%
3/242 • Number of events 3 • Day 1 through Week 78
Only serious adverse events (SAE) and treatment-emergent adverse events (TEAE) leading to discontinuation from full participation were collected in this study. The 1% frequency threshold for reporting other adverse events is based on All Subjects (Entire Study) column.
Gastrointestinal disorders
Constipation
0.00%
0/153 • Day 1 through Week 78
Only serious adverse events (SAE) and treatment-emergent adverse events (TEAE) leading to discontinuation from full participation were collected in this study. The 1% frequency threshold for reporting other adverse events is based on All Subjects (Entire Study) column.
0.00%
0/89 • Day 1 through Week 78
Only serious adverse events (SAE) and treatment-emergent adverse events (TEAE) leading to discontinuation from full participation were collected in this study. The 1% frequency threshold for reporting other adverse events is based on All Subjects (Entire Study) column.
1.2%
3/242 • Number of events 3 • Day 1 through Week 78
Only serious adverse events (SAE) and treatment-emergent adverse events (TEAE) leading to discontinuation from full participation were collected in this study. The 1% frequency threshold for reporting other adverse events is based on All Subjects (Entire Study) column.

Additional Information

Executive Vice President, Head of Global Development

Orexigen Therapeutics, Inc.

Phone: (858) 875-8600

Results disclosure agreements

  • Principal investigator is a sponsor employee If not already published by Sponsor as part of a multi-center publication, 24 months after conclusion, abandonment or termination of the study or notification that there will be no such multi-center publication, PI may publish the results for PI's study center individually. Prior to such publication, PI must provide Sponsor with at least 90 days to review and comment on the proposed publication. Sponsor may delay publication for up to an additional 6 month period to file for patent protection.
  • Publication restrictions are in place

Restriction type: OTHER