Trial Outcomes & Findings for Pharmacokinetics of Leptin Administration During Fasting (NCT NCT00140205)

NCT ID: NCT00140205

Last Updated: 2018-11-02

Results Overview

72-hour fasting Day 3 Leptin dose 0.01 mg/kg

Recruitment status

COMPLETED

Study phase

PHASE1

Target enrollment

15 participants

Primary outcome timeframe

3 DAY

Results posted on

2018-11-02

Participant Flow

Participant milestones

Participant milestones
Measure
5 LEAN MEN Fasting State (72 Hrs) on 0.3mg/kg Leptin
5 lean men were fasted for 72 hrs and during that period recieved 0.3mg/kg leptin
5 OBESE MEN 72 HR FASTING on 0.3mg/kg Leptin
5 obese men were fasted for 72 hrs and during that period received 0.3mg/kg leptin
5 LEAN WOMEN 72 HR FATSING on 0.3mg/kg Leptin
5 lean women were fasted for 72 hrs and during that period received 0.3mg/kg leptin
Overall Study
STARTED
5
5
5
Overall Study
COMPLETED
5
5
5
Overall Study
NOT COMPLETED
0
0
0

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

Pharmacokinetics of Leptin Administration During Fasting

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
LEAN MEN 24h Fed or 72h Fasting in Different Leptin Doses
n=5 Participants
5 lean men were fasted for 72 hrs and during that period received 0.01 mg/kg leptin (First visit), 0,1 mg/kg (Second visit), 0.3 mg/kg (Third visit)
OBESE MEN 24h Fed or 72h Fasting in Different Leptin Doses
n=5 Participants
5 obese men were fasted for 72 hrs and during that period recieved 0.01 mg/kg leptin (First visit), 0,1 mg/kg (Second visit), 0.3 mg/kg (Third visit)
OBESE WOMEN 24h Fed or 72h Fasting in Different Leptin Doses
n=5 Participants
5 lean women were fasted for 72 hrs and during that period received 0.01 mg/kg leptin (First visit), 0,1 mg/kg (Second visit), 0.3 mg/kg (Third visit)
Total
n=15 Participants
Total of all reporting groups
Age, Categorical
<=18 years
0 Participants
n=99 Participants
0 Participants
n=107 Participants
0 Participants
n=206 Participants
0 Participants
n=7 Participants
Age, Categorical
Between 18 and 65 years
5 Participants
n=99 Participants
5 Participants
n=107 Participants
5 Participants
n=206 Participants
15 Participants
n=7 Participants
Age, Categorical
>=65 years
0 Participants
n=99 Participants
0 Participants
n=107 Participants
0 Participants
n=206 Participants
0 Participants
n=7 Participants
Age, Continuous
22 YEARS
STANDARD_DEVIATION .09 • n=99 Participants
23 YEARS
STANDARD_DEVIATION .08 • n=107 Participants
22 YEARS
STANDARD_DEVIATION .05 • n=206 Participants
23 YEARS
STANDARD_DEVIATION .07 • n=7 Participants
Sex: Female, Male
Female
0 Participants
n=99 Participants
0 Participants
n=107 Participants
5 Participants
n=206 Participants
5 Participants
n=7 Participants
Sex: Female, Male
Male
5 Participants
n=99 Participants
5 Participants
n=107 Participants
0 Participants
n=206 Participants
10 Participants
n=7 Participants
Region of Enrollment
United States
5 Participants
n=99 Participants
5 Participants
n=107 Participants
5 Participants
n=206 Participants
15 Participants
n=7 Participants
BMI
BMI>30kg/m2
0 participants
n=99 Participants
5 participants
n=107 Participants
0 participants
n=206 Participants
5 participants
n=7 Participants
BMI
BMI<25kg/m2
5 participants
n=99 Participants
0 participants
n=107 Participants
5 participants
n=206 Participants
10 participants
n=7 Participants

PRIMARY outcome

Timeframe: 3 DAY

72-hour fasting Day 3 Leptin dose 0.01 mg/kg

Outcome measures

Outcome measures
Measure
5 LEAN MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 OBESE MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 LEAN WOMEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
Leptin Pharmacokinetic Parameters - TIME(T1/2) DAY 3 / TMAX DAY 3 72-hour Fasting Day 3 Leptin Dose 0.01 mg/kg
TIME(T1/2) DAY 3
1.93 HR
Standard Deviation 0.28
2.75 HR
Standard Deviation 1.49
2.99 HR
Standard Deviation 1.01
Leptin Pharmacokinetic Parameters - TIME(T1/2) DAY 3 / TMAX DAY 3 72-hour Fasting Day 3 Leptin Dose 0.01 mg/kg
TMAX DAY 3
2.00 HR
Standard Deviation 0.71
3.00 HR
Standard Deviation 0.71
2.80 HR
Standard Deviation 1.30

PRIMARY outcome

Timeframe: 3 DAY

72-hour fasting Day 3 Leptin dose 0.01 mg/kg

Outcome measures

Outcome measures
Measure
5 LEAN MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 OBESE MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 LEAN WOMEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
Leptin Pharmacokinetics Parameters - c(MAX) / L0 (ENDOGENOUS LEPTIN LEVEL) 72-hour Fasting Day 3 Leptin Dose 0.01 mg/kg
c(MAX)
2.60 NG/ML
Standard Deviation 0.59
4.21 NG/ML
Standard Deviation 1.17
4.62 NG/ML
Standard Deviation 1.60
Leptin Pharmacokinetics Parameters - c(MAX) / L0 (ENDOGENOUS LEPTIN LEVEL) 72-hour Fasting Day 3 Leptin Dose 0.01 mg/kg
L0 (ENDOGENOUS LEPTIN LEVEL)
1.42 NG/ML
Standard Deviation 0.72
3.32 NG/ML
Standard Deviation 1.21
3.53 NG/ML
Standard Deviation 1.26

PRIMARY outcome

Timeframe: 3 DAY

72-hour fasting Day 3 Leptin dose 0.01 mg/kg

Outcome measures

Outcome measures
Measure
5 LEAN MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 OBESE MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 LEAN WOMEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
Leptin Pharmacokinetics Parameters - AUC 72-hour Fasting Day 3 Leptin Dose 0.01 mg/kg
12.27 NG*H/ML
Standard Deviation 2.95
35.43 NG*H/ML
Standard Deviation 13.81
47.81 NG*H/ML
Standard Deviation 23.90

PRIMARY outcome

Timeframe: 3 DAY

72-hour fasting Day 3 Leptin dose 0.1 mg/kg

Outcome measures

Outcome measures
Measure
5 LEAN MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 OBESE MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 LEAN WOMEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
Leptin Pharmacokinetic Parameters TIME(T1/2) DAY 3 / TMAX DAY 3 72-hour Fasting Day 3 Leptin Dose 0.1 mg/kg
TIME(T1/2) DAY 3
1.82 HR
Standard Deviation 0.58
3.10 HR
Standard Deviation 1.20
1.73 HR
Standard Deviation 0.57
Leptin Pharmacokinetic Parameters TIME(T1/2) DAY 3 / TMAX DAY 3 72-hour Fasting Day 3 Leptin Dose 0.1 mg/kg
TMAX DAY 3
3.20 HR
Standard Deviation 1.10
4.00 HR
Standard Deviation 1.58
3.00 HR
Standard Deviation 1.00

PRIMARY outcome

Timeframe: 3 DAY

72-hour fasting Day 3 Leptin dose 0.1 mg/kg

Outcome measures

Outcome measures
Measure
5 LEAN MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 OBESE MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 LEAN WOMEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
Leptin Pharmacokinetics Parameters - c(MAX) / L0 (ENDOGENOUS LEPTIN LEVEL) 72-hour Fasting Day 3 Leptin Dose 0.1 mg/kg
c(MAX)
33.88 NG/ML
Standard Deviation 9.38
78.43 NG/ML
Standard Deviation 14.71
106.4 NG/ML
Standard Deviation 36.7
Leptin Pharmacokinetics Parameters - c(MAX) / L0 (ENDOGENOUS LEPTIN LEVEL) 72-hour Fasting Day 3 Leptin Dose 0.1 mg/kg
L0 (ENDOGENOUS LEPTIN LEVEL)
1.69 NG/ML
Standard Deviation 0.89
5.92 NG/ML
Standard Deviation 1.33
5.36 NG/ML
Standard Deviation 1.89

PRIMARY outcome

Timeframe: 3 DAY

72-hour fasting Day 3 Leptin dose 0.1 mg/kg

Outcome measures

Outcome measures
Measure
5 LEAN MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 OBESE MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 LEAN WOMEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
Leptin Pharmacokinetics Parameters - AUC 72-hour Fasting Day 3 Leptin Dose 0.1 mg/kg
206.9 NG*H/ML
Standard Deviation 56.9
778.2 NG*H/ML
Standard Deviation 121.5
676.5 NG*H/ML
Standard Deviation 267.4

PRIMARY outcome

Timeframe: 3 DAY

72-hour fasting Day 3 Leptin dose 0.3 mg/kg

Outcome measures

Outcome measures
Measure
5 LEAN MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 OBESE MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 LEAN WOMEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
Leptin Pharmacokinetic Parameters - TIME(T1/2) DAY 3 / TMAX DAY 3 72-hour Fasting Day 3 Leptin Dose 0.3 mg/kg
TIME(T1/2) DAY 3
1.98 HR
Standard Deviation 0.28
2.40 HR
Standard Deviation 0.54
1.92 HR
Standard Deviation 0.45
Leptin Pharmacokinetic Parameters - TIME(T1/2) DAY 3 / TMAX DAY 3 72-hour Fasting Day 3 Leptin Dose 0.3 mg/kg
TMAX DAY 3
3.80 HR
Standard Deviation 1.30
3.40 HR
Standard Deviation 1.67
3.80 HR
Standard Deviation 1.48

PRIMARY outcome

Timeframe: 3 DAY

72-hour fasting Day 3 Leptin dose 0.3 mg/kg

Outcome measures

Outcome measures
Measure
5 LEAN MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 OBESE MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 LEAN WOMEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
Leptin Pharmacokinetics Parameters - c(MAX) / L0 (ENDOGENOUS LEPTIN LEVEL) 72-hour Fasting Day 3 Leptin Dose 0.3 mg/kg
c(MAX)
88.39 NG/ML
Standard Deviation 32.13
301.6 NG/ML
Standard Deviation 86.8
399.6 NG/ML
Standard Deviation 76.8
Leptin Pharmacokinetics Parameters - c(MAX) / L0 (ENDOGENOUS LEPTIN LEVEL) 72-hour Fasting Day 3 Leptin Dose 0.3 mg/kg
L0 (ENDOGENOUS LEPTIN LEVEL)
1.62 NG/ML
Standard Deviation 0.64
13.72 NG/ML
Standard Deviation 2.97
6.95 NG/ML
Standard Deviation 1.05

PRIMARY outcome

Timeframe: 3 DAY

72-hour fasting Day 3 Leptin dose 0.3 mg/kg

Outcome measures

Outcome measures
Measure
5 LEAN MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 OBESE MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 LEAN WOMEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
Leptin Pharmacokinetics Parameters - AUC 72-hour Fasting Day 3 Leptin Dose 0.3 mg/kg
747.3 NG*H/ML
Standard Deviation 300.8
2717 NG*H/ML
Standard Deviation 647.1
2738 NG*H/ML
Standard Deviation 624

PRIMARY outcome

Timeframe: 1 DAY

24-hour fed Leptin dose 0.3 mg/kg

Outcome measures

Outcome measures
Measure
5 LEAN MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 OBESE MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 LEAN WOMEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
Leptin Pharmacokinetic Parameters - TIME(T1/2) / TMAX 24-hour Fed Leptin Dose 0.3 mg/kg
TIME(T1/2)
2.94 HR
Standard Deviation 0.95
3.69 HR
Standard Deviation 1.13
2.91 HR
Standard Deviation 0.90
Leptin Pharmacokinetic Parameters - TIME(T1/2) / TMAX 24-hour Fed Leptin Dose 0.3 mg/kg
TMAX
3.60 HR
Standard Deviation 0.89
3.40 HR
Standard Deviation 1.67
2.80 HR
Standard Deviation 0.84

PRIMARY outcome

Timeframe: 1 DAY

24-hour fed Leptin dose 0.3 mg/kg

Outcome measures

Outcome measures
Measure
5 LEAN MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 OBESE MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 LEAN WOMEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
Leptin Pharmacokinetics Parameters - c(MAX) / L0 (ENDOGENOUS LEPTIN LEVEL) 24-hour Fed Leptin Dose 0.3 mg/kg
c(MAX)
168.7 NG/ML
Standard Deviation 61.7
254.3 NG/ML
Standard Deviation 36.7
440.7 NG/ML
Standard Deviation 85.2
Leptin Pharmacokinetics Parameters - c(MAX) / L0 (ENDOGENOUS LEPTIN LEVEL) 24-hour Fed Leptin Dose 0.3 mg/kg
L0 (ENDOGENOUS LEPTIN LEVEL)
2.97 NG/ML
Standard Deviation 0.68
16.24 NG/ML
Standard Deviation 5.00
12.60 NG/ML
Standard Deviation 7.78

PRIMARY outcome

Timeframe: 1 DAY

24-hour fed Leptin dose 0.3 mg/kg

Outcome measures

Outcome measures
Measure
5 LEAN MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 OBESE MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 LEAN WOMEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
Leptin Pharmacokinetics Parameters - AUC 24-hour Fed Leptin Dose 0.3 mg/kg
1243 NG*H/ML
Standard Deviation 304.2
2948 NG*H/ML
Standard Deviation 521.9
3300 NG*H/ML
Standard Deviation 871

PRIMARY outcome

Timeframe: 1 DAY

24-hour fed Leptin dose 0.01 mg/kg

Outcome measures

Outcome measures
Measure
5 LEAN MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 OBESE MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 LEAN WOMEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
Leptin Pharmacokinetic Parameters - TIME(T1/2) / TMAX 24-hour Fed Leptin Dose 0.01 mg/kg
TIME(T1/2)
2.84 HR
Standard Deviation 0.98
4.71 HR
Standard Deviation 2.16
3.08 HR
Standard Deviation 1.24
Leptin Pharmacokinetic Parameters - TIME(T1/2) / TMAX 24-hour Fed Leptin Dose 0.01 mg/kg
TMAX
3.00 HR
Standard Deviation 1.00
6.20 HR
Standard Deviation 3.35
2.80 HR
Standard Deviation 0.84

PRIMARY outcome

Timeframe: 1 DAY

24-hour fed Leptin dose 0.01 mg/kg

Outcome measures

Outcome measures
Measure
5 LEAN MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 OBESE MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 LEAN WOMEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
Leptin Pharmacokinetics Parameters - c(MAX) / L0 (ENDOGENOUS LEPTIN LEVEL) 24-hour Fed Leptin Dose 0.01 mg/kg
c(MAX)
5.97 NG/ML
Standard Deviation 1.65
7.91 NG/ML
Standard Deviation 2.37
14.51 NG/ML
Standard Deviation 2.96
Leptin Pharmacokinetics Parameters - c(MAX) / L0 (ENDOGENOUS LEPTIN LEVEL) 24-hour Fed Leptin Dose 0.01 mg/kg
L0 (ENDOGENOUS LEPTIN LEVEL)
2.32 NG/ML
Standard Deviation 0.48
12.67 NG/ML
Standard Deviation 6.15
15.54 NG/ML
Standard Deviation 8.90

PRIMARY outcome

Timeframe: 1 DAY

24-hour fed Leptin dose 0.01 mg/kg

Outcome measures

Outcome measures
Measure
5 LEAN MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 OBESE MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 LEAN WOMEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
Leptin Pharmacokinetics Parameters - AUC 24-hour Fed Leptin Dose 0.01 mg/kg
33.18 NG*H/ML
Standard Deviation 8.68
113.9 NG*H/ML
Standard Deviation 56.6
110.5 NG*H/ML
Standard Deviation 45.0

PRIMARY outcome

Timeframe: 1 DAY

24-hour fed Leptin dose 0.1 mg/kg

Outcome measures

Outcome measures
Measure
5 LEAN MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 OBESE MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 LEAN WOMEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
Leptin Pharmacokinetic Parameters - TIME(T1/2) / TMAX 24-hour Fed Leptin Dose 0.1 mg/kg
TIME(T1/2)
2.89 HR
Standard Deviation 0.24
4.72 HR
Standard Deviation 1.51
2.08 HR
Standard Deviation 1.01
Leptin Pharmacokinetic Parameters - TIME(T1/2) / TMAX 24-hour Fed Leptin Dose 0.1 mg/kg
TMAX
3.00 HR
Standard Deviation 1.58
4.60 HR
Standard Deviation 0.89
3.20 HR
Standard Deviation 0.84

PRIMARY outcome

Timeframe: 1 DAY

24-hour fed Leptin dose 0.1 mg/kg

Outcome measures

Outcome measures
Measure
5 LEAN MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 OBESE MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 LEAN WOMEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
Leptin Pharmacokinetics Parameters - c(MAX) / L0 (ENDOGENOUS LEPTIN LEVEL) 24-hour Fed Leptin Dose 0.1 mg/kg
c(MAX)
72.56 NG/ML
Standard Deviation 12.19
77.26 NG/ML
Standard Deviation 10.10
107.4 NG/ML
Standard Deviation 19.4
Leptin Pharmacokinetics Parameters - c(MAX) / L0 (ENDOGENOUS LEPTIN LEVEL) 24-hour Fed Leptin Dose 0.1 mg/kg
L0 (ENDOGENOUS LEPTIN LEVEL)
2.11 NG/ML
Standard Deviation 0.50
15.49 NG/ML
Standard Deviation 8.64
14.36 NG/ML
Standard Deviation 11.12

PRIMARY outcome

Timeframe: 1 DAY

24-hour fed Leptin dose 0.1 mg/kg

Outcome measures

Outcome measures
Measure
5 LEAN MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 OBESE MEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
5 LEAN WOMEN Fasting (72 Hrs) - Leptin 0.01 mg/kg
n=5 Participants
Leptin Pharmacokinetics Parameters - AUC 24-hour Fed Leptin Dose 0.1 mg/kg
507.4 NG*H/ML
Standard Deviation 44.1
1051 NG*H/ML
Standard Deviation 202.9
620.2 NG*H/ML
Standard Deviation 157.1

SECONDARY outcome

Timeframe: 1 DAY or DAY 3

Data were collected neither in Fed nor in Fasting state for the different doses of leptin

Outcome measures

Outcome data not reported

SECONDARY outcome

Timeframe: 1 DAY or DAY 3

Data were collected neither in Fed nor in Fasting state for the different doses of leptin

Outcome measures

Outcome data not reported

SECONDARY outcome

Timeframe: day 3 of fasting and day 1 of fed state

Data were collected neither in Fed nor in Fasting state for the different doses of leptin

Outcome measures

Outcome data not reported

Adverse Events

Fasting State (72 Hrs)

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

Serious adverse events

Adverse event data not reported

Other adverse events

Adverse event data not reported

Additional Information

Dr. Christos mantzoros

BIDMC

Phone: 6176671656

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place