ObesityPhase 2NCT00657605
Effects of Human Leptin Replacement
A Phase 2 study testing Recombinant methionyl human leptin in people with Obesity and Metabolic Syndrome, run by University of Miami at 1 site in United States.
Trial summary
This study will test the hypothesis that leptin contributes to the regulation of the dynamics of human endocrine function. Read more about this study
- Who is it for?
- Ages 18 to 80 years
- Conditions the study is for
- Obesity, Metabolic Syndrome, Diabetes
- What is being tested?
- Recombinant methionyl human leptin
- Type of treatment
- Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 3 participants
- Where
- 1 siteUnited States
- Study dates
- Jun 2001to 4 May 2010
- Phase
- Phase 2
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 80 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Congenital leptin deficiency (these are only 3 adult individuals in the world that have been identified as leptin-naïve thus far).
Who cannot join
- Pregnant, trying to become pregnant, breast-feeding an infant or sexually active women, not using contraception.
- Subjects with hemoglobin levels below 12 g/dl.
- Subjects whose body contains a ferromagnetic implanted device that might produce a safety hazard during fMRI.
Trial locations and contacts
1 site in 1 country.
United States1 site
University of Miami Miller School of Medicine, Center on Pharmacogenomics
Miami, Florida, 33136
About this study
This study will test the hypothesis that leptin contributes to the regulation of the dynamics of human endocrine function.
Read the detailed description
The study aims to elucidate the role of leptin in the regulation of human endocrine function approached by a carefully designed, prospective clinical study of the rapidly-sampled dynamics of endocrine rhythms during the course of leptin-replacement treatment in the only three adult individuals identified in the world so far who are leptin-naive due to a functional leptin gene mutation. A study of leptin-naive subjects avoids all confounding factors and pitfalls, because the only bioactive leptin to which they will be exposed is the exogenously administered recombinant protein. Thus, this proposal will permit us to ascertain the endocrine effects of human leptin.
- Conditions
- Obesity, Metabolic Syndrome, Diabetes
- Being tested
- Recombinant methionyl human leptin
- Keywords
- Congenital leptin deficiency, Obesity, Metabolic syndrome, Diabetes
- Medical subject headings
- Obesity, Metabolic Syndrome, Diabetes Mellitus
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Recombinant methionyl human leptinDrug
Also called Metreleptin, r-metHuLeptin
Recombinant methionyl human leptin, subcutaneous, once a day, 0.02 to 0.04 mg/kg (adjusted according to weight loss), indeterminate duration.
| Study group | Role | What they receive |
|---|---|---|
| Recombinant methionyl human leptin | Experimental | Participants with congenital leptin deficiency will receive the Recombinant methionyl human leptin intervention subcutaneously, once a day with a dose of 0.02 to 0.04 mg/kg (adjusted according to weight loss). Receives: Drug: Recombinant methionyl human leptin |
What is being measured
The primary outcome is the main question the study is designed to answer.
Change in Weight
Measured: Baseline, 107 months
Secondary outcomes (1)
Change in Glucose Levels
Measured: Baseline, 107 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted14 Apr 2008 (estimated)
- Study startJun 2001
- Primary completion4 May 2010
- Study completion4 May 2010
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (13)Papers the sponsor has linked to this study.
- Other trials for ObesityStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 2
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 3 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Miami
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Richard Bookman, University of Miami
- Investigators
- Julio Licinio, MD, Principal investigator, University of Miami
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00657605
- Sponsor's protocol ID
- 20060282
- Other IDs
- 1R0IDK58851-01
- Status last verified
- Feb 2020
- First submitted
- 9 Apr 2008
- Last updated
- 13 Feb 2020
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Strobel A, Issad T, Camoin L, Ozata M, Strosberg AD. A leptin missense mutation associated with hypogonadism and morbid obesity. Nat Genet. 1998 Mar;18(3):213-5. doi: 10.1038/ng0398-213. No abstract available.
PubMed 9500540Baicy K, London ED, Monterosso J, Wong ML, Delibasi T, Sharma A, Licinio J. Leptin replacement alters brain response to food cues in genetically leptin-deficient adults. Proc Natl Acad Sci U S A. 2007 Nov 13;104(46):18276-9. doi: 10.1073/pnas.0706481104. Epub 2007 Nov 6.
PubMed 17986612Licinio J, Ribeiro L, Busnello JV, Delibasi T, Thakur S, Elashoff RM, Sharma A, Jardack PM, Depaoli AM, Wong ML. Effects of leptin replacement on macro- and micronutrient preferences. Int J Obes (Lond). 2007 Dec;31(12):1859-63. doi: 10.1038/sj.ijo.0803703. Epub 2007 Aug 7.
PubMed 17684509Licinio J, Milane M, Thakur S, Whelan F, Yildiz BO, Delibasi T, de Miranda PB, Ozata M, Bolu E, Depaoli A, Wong ML. Effects of leptin on intake of specific micro- and macronutrients in a woman with leptin gene deficiency studied off and on leptin at stable body weight. Appetite. 2007 Nov;49(3):594-9. doi: 10.1016/j.appet.2007.03.228. Epub 2007 Apr 6.
PubMed 17517446Williamson DA, Ravussin E, Wong ML, Wagner A, Dipaoli A, Caglayan S, Ozata M, Martin C, Walden H, Arnett C, Licinio J. Microanalysis of eating behavior of three leptin deficient adults treated with leptin therapy. Appetite. 2005 Aug;45(1):75-80. doi: 10.1016/j.appet.2005.01.002.
PubMed 15949871Matochik JA, London ED, Yildiz BO, Ozata M, Caglayan S, DePaoli AM, Wong ML, Licinio J. Effect of leptin replacement on brain structure in genetically leptin-deficient adults. J Clin Endocrinol Metab. 2005 May;90(5):2851-4. doi: 10.1210/jc.2004-1979. Epub 2005 Feb 15.
PubMed 15713712Licinio J, Caglayan S, Ozata M, Yildiz BO, de Miranda PB, O'Kirwan F, Whitby R, Liang L, Cohen P, Bhasin S, Krauss RM, Veldhuis JD, Wagner AJ, DePaoli AM, McCann SM, Wong ML. Phenotypic effects of leptin replacement on morbid obesity, diabetes mellitus, hypogonadism, and behavior in leptin-deficient adults. Proc Natl Acad Sci U S A. 2004 Mar 30;101(13):4531-6. doi: 10.1073/pnas.0308767101. Epub 2004 Mar 9.
PubMed 15070752Mantzoros CS, Ozata M, Negrao AB, Suchard MA, Ziotopoulou M, Caglayan S, Elashoff RM, Cogswell RJ, Negro P, Liberty V, Wong ML, Veldhuis J, Ozdemir IC, Gold PW, Flier JS, Licinio J. Synchronicity of frequently sampled thyrotropin (TSH) and leptin concentrations in healthy adults and leptin-deficient subjects: evidence for possible partial TSH regulation by leptin in humans. J Clin Endocrinol Metab. 2001 Jul;86(7):3284-91. doi: 10.1210/jcem.86.7.7644.
PubMed 11443202Ozata M, Ozdemir IC, Licinio J. Human leptin deficiency caused by a missense mutation: multiple endocrine defects, decreased sympathetic tone, and immune system dysfunction indicate new targets for leptin action, greater central than peripheral resistance to the effects of leptin, and spontaneous correction of leptin-mediated defects. J Clin Endocrinol Metab. 1999 Oct;84(10):3686-95. doi: 10.1210/jcem.84.10.5999.
PubMed 10523015Paz-Filho G, Wong ML, Licinio J. The procognitive effects of leptin in the brain and their clinical implications. Int J Clin Pract. 2010 Dec;64(13):1808-12. doi: 10.1111/j.1742-1241.2010.02536.x.
PubMed 21070531Paz-Filho G, Delibasi T, Erol HK, Wong ML, Licinio J. Congenital leptin deficiency and thyroid function. Thyroid Res. 2009 Nov 4;2(1):11. doi: 10.1186/1756-6614-2-11.
PubMed 19889232Paz-Filho G, Esposito K, Hurwitz B, Sharma A, Dong C, Andreev V, Delibasi T, Erol H, Ayala A, Wong ML, Licinio J. Changes in insulin sensitivity during leptin replacement therapy in leptin-deficient patients. Am J Physiol Endocrinol Metab. 2008 Dec;295(6):E1401-8. doi: 10.1152/ajpendo.90450.2008. Epub 2008 Oct 14.
PubMed 18854428Andreev VP, Paz-Filho G, Wong ML, Licinio J. Deconvolution of insulin secretion, insulin hepatic extraction post-hepatic delivery rates and sensitivity during 24-hour standardized meals: time course of glucose homeostasis in leptin replacement treatment. Horm Metab Res. 2009 Feb;41(2):142-51. doi: 10.1055/s-0028-1082048. Epub 2008 Aug 22.
PubMed 18726828
Study at a glance
From the registry record, last updated by the sponsor on 13 Feb 2020. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effects of Human Leptin Replacement
- ClinicalTrials.gov ID
- NCT00657605
- Acronym / sponsor ID
- 20060282
- Conditions
- Obesity, Metabolic Syndrome, Diabetes
- Keywords
- Congenital leptin deficiency, Obesity, Metabolic syndrome, Diabetes
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 3 participants (actual)
- Lead sponsor
- University of MiamiUniversity, hospital or other
- Collaborators
- National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
- Study start
- Jun 2001 (actual)
- Primary completion
- 4 May 2010 (actual)
- Study completion
- 4 May 2010 (actual)
- First posted
- 14 Apr 2008 (estimated)
- Results
- Posted 13 Feb 2020
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study will test the hypothesis that leptin contributes to the regulation of the dynamics of human endocrine function.
Detailed description
The study aims to elucidate the role of leptin in the regulation of human endocrine function approached by a carefully designed, prospective clinical study of the rapidly-sampled dynamics of endocrine rhythms during the course of leptin-replacement treatment in the only three adult individuals identified in the world so far who are leptin-naive due to a functional leptin gene mutation. A study of leptin-naive subjects avoids all confounding factors and pitfalls, because the only bioactive leptin to which they will be exposed is the exogenously administered recombinant protein. Thus, this proposal will permit us to ascertain the endocrine effects of human leptin.
Study design
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Recombinant methionyl human leptin | Experimental | Drug: Recombinant methionyl human leptinParticipants with congenital leptin deficiency will receive the Recombinant methionyl human leptin intervention subcutaneously, once a day with a dose of 0.02 to 0.04 mg/kg (adjusted according to weight loss). |
Who may qualify
- Ages
- 18 to 80 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (1 listed)
- Congenital leptin deficiency (these are only 3 adult individuals in the world that have been identified as leptin-naïve thus far).
Key exclusion criteria (3 listed)
- Pregnant, trying to become pregnant, breast-feeding an infant or sexually active women, not using contraception.
- Subjects with hemoglobin levels below 12 g/dl.
- Subjects whose body contains a ferromagnetic implanted device that might produce a safety hazard during fMRI.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Recombinant methionyl human leptinAlso: Metreleptin, r-metHuLeptinRecombinant methionyl human leptin, subcutaneous, once a day, 0.02 to 0.04 mg/kg (adjusted according to weight loss), indeterminate duration. | Drug | Recombinant methionyl human leptin |
Primary outcome
Change in Weight
Time frame: Baseline, 107 months
1 secondary outcome
Change in Glucose Levels
Time frame: Baseline, 107 months
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 13 Feb 2020.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Background: PubMed 9500540Strobel A, Issad T, Camoin L, Ozata M, Strosberg AD. A leptin missense mutation associated with hypogonadism and morbid obesity. Nat Genet. 1998 Mar;18(3):213-5. doi: 10.1038/ng0398-213. No abstract available.
- Results publication: PubMed 17986612Baicy K, London ED, Monterosso J, Wong ML, Delibasi T, Sharma A, Licinio J. Leptin replacement alters brain response to food cues in genetically leptin-deficient adults. Proc Natl Acad Sci U S A. 2007 Nov 13;104(46):18276-9. doi: 10.1073/pnas.0706481104. Epub 2007 Nov 6.
- Results publication: PubMed 17684509Licinio J, Ribeiro L, Busnello JV, Delibasi T, Thakur S, Elashoff RM, Sharma A, Jardack PM, Depaoli AM, Wong ML. Effects of leptin replacement on macro- and micronutrient preferences. Int J Obes (Lond). 2007 Dec;31(12):1859-63. doi: 10.1038/sj.ijo.0803703. Epub 2007 Aug 7.
- Results publication: PubMed 17517446Licinio J, Milane M, Thakur S, Whelan F, Yildiz BO, Delibasi T, de Miranda PB, Ozata M, Bolu E, Depaoli A, Wong ML. Effects of leptin on intake of specific micro- and macronutrients in a woman with leptin gene deficiency studied off and on leptin at stable body weight. Appetite. 2007 Nov;49(3):594-9. doi: 10.1016/j.appet.2007.03.228. Epub 2007 Apr 6.
- Results publication: PubMed 15949871Williamson DA, Ravussin E, Wong ML, Wagner A, Dipaoli A, Caglayan S, Ozata M, Martin C, Walden H, Arnett C, Licinio J. Microanalysis of eating behavior of three leptin deficient adults treated with leptin therapy. Appetite. 2005 Aug;45(1):75-80. doi: 10.1016/j.appet.2005.01.002.
- Results publication: PubMed 15713712Matochik JA, London ED, Yildiz BO, Ozata M, Caglayan S, DePaoli AM, Wong ML, Licinio J. Effect of leptin replacement on brain structure in genetically leptin-deficient adults. J Clin Endocrinol Metab. 2005 May;90(5):2851-4. doi: 10.1210/jc.2004-1979. Epub 2005 Feb 15.
- Results publication: PubMed 15070752Licinio J, Caglayan S, Ozata M, Yildiz BO, de Miranda PB, O'Kirwan F, Whitby R, Liang L, Cohen P, Bhasin S, Krauss RM, Veldhuis JD, Wagner AJ, DePaoli AM, McCann SM, Wong ML. Phenotypic effects of leptin replacement on morbid obesity, diabetes mellitus, hypogonadism, and behavior in leptin-deficient adults. Proc Natl Acad Sci U S A. 2004 Mar 30;101(13):4531-6. doi: 10.1073/pnas.0308767101. Epub 2004 Mar 9.
- Results publication: PubMed 11443202Mantzoros CS, Ozata M, Negrao AB, Suchard MA, Ziotopoulou M, Caglayan S, Elashoff RM, Cogswell RJ, Negro P, Liberty V, Wong ML, Veldhuis J, Ozdemir IC, Gold PW, Flier JS, Licinio J. Synchronicity of frequently sampled thyrotropin (TSH) and leptin concentrations in healthy adults and leptin-deficient subjects: evidence for possible partial TSH regulation by leptin in humans. J Clin Endocrinol Metab. 2001 Jul;86(7):3284-91. doi: 10.1210/jcem.86.7.7644.
- Results publication: PubMed 10523015Ozata M, Ozdemir IC, Licinio J. Human leptin deficiency caused by a missense mutation: multiple endocrine defects, decreased sympathetic tone, and immune system dysfunction indicate new targets for leptin action, greater central than peripheral resistance to the effects of leptin, and spontaneous correction of leptin-mediated defects. J Clin Endocrinol Metab. 1999 Oct;84(10):3686-95. doi: 10.1210/jcem.84.10.5999.
- Derived from this study: PubMed 21070531Paz-Filho G, Wong ML, Licinio J. The procognitive effects of leptin in the brain and their clinical implications. Int J Clin Pract. 2010 Dec;64(13):1808-12. doi: 10.1111/j.1742-1241.2010.02536.x.
- Derived from this study: PubMed 19889232Paz-Filho G, Delibasi T, Erol HK, Wong ML, Licinio J. Congenital leptin deficiency and thyroid function. Thyroid Res. 2009 Nov 4;2(1):11. doi: 10.1186/1756-6614-2-11.
- Derived from this study: PubMed 18854428Paz-Filho G, Esposito K, Hurwitz B, Sharma A, Dong C, Andreev V, Delibasi T, Erol H, Ayala A, Wong ML, Licinio J. Changes in insulin sensitivity during leptin replacement therapy in leptin-deficient patients. Am J Physiol Endocrinol Metab. 2008 Dec;295(6):E1401-8. doi: 10.1152/ajpendo.90450.2008. Epub 2008 Oct 14.
- Individual participant dataSharing planned: No
Related trials for Obesity
RecruitingPhase 4
Translational Health Research Into Vascular and Neurocognitive Effects of Weight Loss
Class I/II Obesity
Not yet recruitingObservational study
Assessing the Impact of Perceptions of Unpredictability on Objective Measures of Food Consumption and Metabolism
Healthy Volunteer, Obestity
RecruitingPhase 1/2
A Phase 1/2a Study of WVE-007 in Adults Living With Overweight or Obesity
Overweight and Obesity
Not yet recruitingPhase 4
Effects of Tirzepatide on Esophagogastric Junction Mechanics, Reflux Burden, and Gastric Physiology in Adults With Obesity
Obese Adults
Not yet recruitingObservational study
A Natural History of Genetic and Environmental Predictors of Pubertal Timing Among Youth With Obesity
Obesity
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Julio Licinio, MD principal investigator
University of Miami
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing Recombinant methionyl human leptin in people with Obesity and Metabolic Syndrome, run by University of Miami at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 13 Feb 2020. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 13 Feb 2020). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Change in Weight (time frame: Baseline, 107 months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00657605, which also lists 13 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 13 Feb 2020.