Impaired Glucose TolerancePhase 4NCT01548651
Effect of Saxagliptin Treatment on Myocardial Fat Content, and Monocyte Inflammation
A Phase 4 study testing Saxagliptin in people with Impaired Glucose Tolerance, run by Baylor College of Medicine at 1 site in United States.
Trial summary
The purpose of the study is to examine the effect of saxagliptin, an anti-diabetes medication, on hepatic and myocardial fat content and monocyte inflammation in patients with Impaired Glucose Tolerance (IGT). Read more about this study
- Who is it for?
- Ages 30 to 70 years
- Conditions the study is for
- Impaired Glucose Tolerance
- What is being tested?
- Saxagliptin
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 8 participants
- Where
- 1 siteUnited States
- Study dates
- Feb 2012to 25 Aug 2017
- Phase
- Phase 4
- 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 30 to 70 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Men and women with a diagnosis diagnosis of Impaired Glucose Tolerance i.e. fasting plasma glucose less than or equal to 125 mg/dl, 2 hour post 75 gram oral glucose tolerance test (OGTT) plasma glucose between 140-199 mg/dl, glycosylated hemoglobin A1c (HbA1c) less than 6.5% as per American Diabetes Association (ADA) criteria.
- Women of childbearing potential (WOCBP) and men must be using an acceptable method of contraception to avoid pregnancy throughout the study in such a manner that the risk of pregnancy is minimized.
Who cannot join
- Patients must not be on anti-diabetes therapy for treatment of Impaired Glucose Tolerance (IGT) and must have a fasting plasma glucose concentration less or equal to 125 mg/dl.
- Type 1 or Type 2 diabetes mellitus (fasting plasma glucose greater than 125 mg/dl).
- Patients must not be on or have received metformin, thiazolidinediones, sulfonylureas, DPP IV inhibitor, or exenatide/liraglutide treatment for treatment of IGT at any time. Patients must not be receiving any of the following medications: thiazide or furosemide diuretics, beta-blockers, or other chronic medications such as hormone replacement therapy with known adverse effects on glucose tolerance levels. Patients taking systemic glucocorticoids will also be excluded.
- Subjects with a history of clinically significant heart disease, peripheral vascular disease, or pulmonary disease.
- Subjects must have a Body Mass Index between 30-35 kg/m2 and stable body weight.
- Subjects must not have clinically significant liver disease (aspartate aminotransferase (AST) < 2.5 times upper limit of normal, Alanine transaminase (ALT) < 2.5 times upper limit of normal, Alkaline phosphatase< 2.5 times upper limit of normal), kidney disease (Serum creatinine < 1.5 mg/dl in men and 1.4 mg/dl in women) or significant anemia (Hematocrit < 34 vol%).
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- Subjects with a history of any serious hypersensitivity reaction to saxagliptin or a dipeptidyl peptidase 4 (DPP-IV) inhibitor.
- Concomitant treatment with systemic cytochrome P450 3A4 inducers.
- Women who are pregnant or breastfeeding
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Effect of Saxagliptin Treatment on Myocardial Fat Content, Left Ventricular Function, and Monocyte Inflammation in Patients With Impaired Glucose Tolerance
The purpose of the study is to examine the effect of saxagliptin, an anti-diabetes medication, on hepatic and myocardial fat content and monocyte inflammation in patients with Impaired Glucose Tolerance (IGT).
Read the detailed description
Obese, insulin resistant individuals have an excess of fat in the liver which is not attributable to alcohol or other known causes of liver disease, a condition defined as nonalcoholic fatty liver disease (NAFLD). The fatty liver is insulin resistant. Individuals with a fatty liver are more likely to have excess intra-abdominal fat as well as a reduction in circulating plasma adiponectin levels. A new class of antidiabetes medications known as dipeptidyl peptidase 4 (DPP-4) inhibitors (sitagliptin, saxagliptin) which enhance the circulating half life of Glucagon-like peptide-1 (GLP-1), an incretin hormone that enhances insulin secretion/ lowers glucose levels, have been approved to treat type 2 diabetes. More recently, it has been shown that these dipeptidyl peptidase 4 inhibitors can also decrease liver fat and inflammation in animal models of obesity by increasing circulating levels of GLP-1. It has been shown that GLP-1 enhances liver fat oxidation, reduces liver fat synthesis, and increases adiponectin levels in animal models in vivo.
Recent reports suggest that NAFLD is associated with an increased risk of cardiovascular disease independent of associated cardiovascular risk factors. Furthermore type 2 diabetics and subjects with impaired glucose tolerance are characterized by an increase in both hepatic and myocardial fat and left ventricular (LV) dysfunction, particularly diastolic dysfunction. Myocardial steatosis is an independent predictor of diastolic dysfunction in type 2 diabetes mellitus as well as impaired glucose tolerance. However, the effect of saxagliptin therapy on liver and myocardial fat content, as well as LV systolic and diastolic function in patients with impaired glucose tolerance (IGT) or type 2 diabetes has not been previously studied. Recently, it has been demonstrated that myocardial triglyceride content is increased in type 2 diabetic patients and is associated with impaired left ventricular diastolic function, independently of age, body mass index (BMI), heart rate, visceral fat, and diastolic blood pressure. More recently, it has been shown that that obese normal glucose tolerant subjects, obese subjects with IGT, and type 2 diabetic subjects have increased myocardial fat compared to lean subjects. Thus, both IGT and type 2 diabetic subjects have increased myocardial steatosis and defects in LV function. GLP-1 has been shown to improve myocardial function and cardiac output in conscious chronically instrumented canine models of cardiac injury or heart failure. GLP-1 increased cardiac output and reduced left ventricular end diastolic pressure in association with reduced systemic vascular resistance, and it improved myocardial insulin sensitivity and myocardial glucose uptake in dogs with rapid pacing-induced dilated cardiomyopathy. However, no previous study has examined the effect of saxagliptin on myocardial fat or LV function in IGT or type 2 diabetic patients. Finally, the effect of saxagliptin on vascular inflammation and monocyte Nuclear Factor-KappaB (NFkappaB) remains to be studied. Patients with Impaired Glucose Tolerance (IGT)/ Impaired Fasting Glucose (IFG) have insulin resistance as a well established defect. Furthermore, as stated previously, both myocardial and hepatic steatosis as well as defects in LV function are well characterized in obese, insulin resistant patients with IGT. However, the effect of DPP IV inhibitors on hepatic and myocardial steatosis and monocyte inflammation in insulin resistant patients with IGT have not been previously studied.
- Conditions
- Impaired Glucose Tolerance
- Being tested
- Saxagliptin, Placebo
- Medical subject headings
- Glucose Intolerance
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
SaxagliptinDrug
Also called Onglyza
Subjects will be randomized to receive either Saxagliptin 5mg daily orally or placebo for 6 months. All subjects will receive baseline measurements of fasting plasma glucose, free fatty acids, plasma adipocytokines, plasma levels of inflammatory markers and C Reactive Protein (CRP), Intracellular Adhesion Molecule (ICAM), vascular cell adhesion molecule (VCAM), plasma lipids, and glucose tolerance (75 gram oral glucose tolerance test) as well as measurement of liver and myocardial fat content and left ventricular systolic and diastolic function with magnetic resonance imaging/spectroscopy. All subjects will also undergo measurements of monocyte inflammatory proteins at baseline. All subjects will undergo repeat measurements of fasting plasma glucose, Free Fatty Acids, inflammatory markers and adipocytokines, oral glucose tolerance test, monocyte inflammation, as well as hepatic/myocardial fat content determination and left ventricular function at the end of the 6 months.
PlaceboDrug
Subjects will be randomized to receive either Saxagliptin 5mg daily orally or placebo for 6 months. Prior to randomization, all subjects will receive baseline measurements of fasting plasma glucose, free fatty acids, plasma adipocytokines, plasma levels of inflammatory markers and CRP, ICAM, VCAM, plasma lipids, and glucose tolerance (75 gram oral glucose tolerance test) as well as measurement of liver and myocardial fat content and left ventricular systolic and diastolic function with magnetic resonance imaging/spectroscopy. All subjects will also undergo measurements of monocyte inflammatory proteins at baseline. All subjects will undergo repeat measurements of fasting plasma glucose, Free Fatty Acids, inflammatory markers and adipocytokines, oral glucose tolerance test, monocyte inflammation, as well as hepatic/myocardial fat content determination and left ventricular function at the end of the 6 month treatment period.
| Study group | Role | What they receive |
|---|---|---|
| Placebo | Placebo comparator | Placebo 5 mg orally daily for 6 months Receives: Drug: Placebo |
| Saxagliptin | Experimental | Saxagliptin 5 mg orally daily for 6 months Receives: Drug: Saxagliptin |
What is being measured
The primary outcome is the main question the study is designed to answer.
Myocardial and Hepatic Fat Content (Percentage)
The percentage change in hepatic fat (%) and myocardial fat (%) from baseline as measured by magnetic resonance imaging and spectroscopy (MRS).
Measured: 6 months
Secondary outcomes (2)
Left Ventricular Ejection Fraction (LVEF)(%).
The change in Left ventricular function measured as the percentage change in left ventricular ejection fraction (LVEF)(%) from baseline as measured by by magnetic resonance imaging.
Measured: 6 months
Monocyte Inflammatory Protein NFkappaB(%)
The percentage change in monocyte inflammatory proteins NFkappaB (%) from baseline.
Measured: 6 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted8 Mar 2012 (estimated)
- Study startFeb 2012
- Primary completion25 Aug 2017
- Study completion25 Aug 2017
Why it stopped: difficulty with enrollment of subjects
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.
- Other trials for Impaired Glucose ToleranceStudies of the same condition, open and under way.
- More trials run by Baylor College of MedicineThe sponsor's other registered studies.
- 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 4
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Quadruple blind
- Who is masked
- Participant, Care provider, Investigator, Outcomes assessor
- Enrolment
- 8 participants (actual)
Sponsor and investigators
- Lead sponsor
- Baylor College of Medicine
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Mandeep Bajaj, Baylor College of Medicine
- Investigators
- Mandeep Bajaj, MD, Principal investigator, Baylor College of Medicine
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01548651
- Sponsor's protocol ID
- H-29171
- Status last verified
- Dec 2019
- First submitted
- 6 Feb 2012
- Last updated
- 13 Jan 2020
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 13 Jan 2020. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effect of Saxagliptin Treatment on Myocardial Fat Content, Left Ventricular Function, and Monocyte Inflammation in Patients With Impaired Glucose Tolerance
- ClinicalTrials.gov ID
- NCT01548651
- Acronym / sponsor ID
- H-29171
- Conditions
- Impaired Glucose Tolerance
- Phase
- Phase 4
- Study type
- Interventional
- Recruitment status
- TerminatedReason stopped: difficulty with enrollment of subjects
- Enrolment
- 8 participants (actual)
- Lead sponsor
- Baylor College of MedicineUniversity, hospital or other
- Study start
- Feb 2012
- Primary completion
- 25 Aug 2017 (actual)
- Study completion
- 25 Aug 2017 (actual)
- First posted
- 8 Mar 2012 (estimated)
- Results
- Posted 13 Jan 2020
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of the study is to examine the effect of saxagliptin, an anti-diabetes medication, on hepatic and myocardial fat content and monocyte inflammation in patients with Impaired Glucose Tolerance (IGT).
Detailed description
Obese, insulin resistant individuals have an excess of fat in the liver which is not attributable to alcohol or other known causes of liver disease, a condition defined as nonalcoholic fatty liver disease (NAFLD). The fatty liver is insulin resistant. Individuals with a fatty liver are more likely to have excess intra-abdominal fat as well as a reduction in circulating plasma adiponectin levels. A new class of antidiabetes medications known as dipeptidyl peptidase 4 (DPP-4) inhibitors (sitagliptin, saxagliptin) which enhance the circulating half life of Glucagon-like peptide-1 (GLP-1), an incretin hormone that enhances insulin secretion/ lowers glucose levels, have been approved to treat type 2 diabetes. More recently, it has been shown that these dipeptidyl peptidase 4 inhibitors can also decrease liver fat and inflammation in animal models of obesity by increasing circulating levels of GLP-1. It has been shown that GLP-1 enhances liver fat oxidation, reduces liver fat synthesis, and increases adiponectin levels in animal models in vivo.
Recent reports suggest that NAFLD is associated with an increased risk of cardiovascular disease independent of associated cardiovascular risk factors. Furthermore type 2 diabetics and subjects with impaired glucose tolerance are characterized by an increase in both hepatic and myocardial fat and left ventricular (LV) dysfunction, particularly diastolic dysfunction. Myocardial steatosis is an independent predictor of diastolic dysfunction in type 2 diabetes mellitus as well as impaired glucose tolerance. However, the effect of saxagliptin therapy on liver and myocardial fat content, as well as LV systolic and diastolic function in patients with impaired glucose tolerance (IGT) or type 2 diabetes has not been previously studied. Recently, it has been demonstrated that myocardial triglyceride content is increased in type 2 diabetic patients and is associated with impaired left ventricular diastolic function, independently of age, body mass index (BMI), heart rate, visceral fat, and diastolic blood pressure. More recently, it has been shown that that obese normal glucose tolerant subjects, obese subjects with IGT, and type 2 diabetic subjects have increased myocardial fat compared to lean subjects. Thus, both IGT and type 2 diabetic subjects have increased myocardial steatosis and defects in LV function. GLP-1 has been shown to improve myocardial function and cardiac output in conscious chronically instrumented canine models of cardiac injury or heart failure. GLP-1 increased cardiac output and reduced left ventricular end diastolic pressure in association with reduced systemic vascular resistance, and it improved myocardial insulin sensitivity and myocardial glucose uptake in dogs with rapid pacing-induced dilated cardiomyopathy. However, no previous study has examined the effect of saxagliptin on myocardial fat or LV function in IGT or type 2 diabetic patients. Finally, the effect of saxagliptin on vascular inflammation and monocyte Nuclear Factor-KappaB (NFkappaB) remains to be studied. Patients with Impaired Glucose Tolerance (IGT)/ Impaired Fasting Glucose (IFG) have insulin resistance as a well established defect. Furthermore, as stated previously, both myocardial and hepatic steatosis as well as defects in LV function are well characterized in obese, insulin resistant patients with IGT. However, the effect of DPP IV inhibitors on hepatic and myocardial steatosis and monocyte inflammation in insulin resistant patients with IGT have not been previously studied.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Quadruple blind (participant, care provider, investigator, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Placebo | Placebo comparator | Drug: PlaceboPlacebo 5 mg orally daily for 6 months |
| Saxagliptin | Experimental | Drug: SaxagliptinSaxagliptin 5 mg orally daily for 6 months |
Who may qualify
- Ages
- 30 to 70 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (2 listed)
- Men and women with a diagnosis diagnosis of Impaired Glucose Tolerance i.e. fasting plasma glucose less than or equal to 125 mg/dl, 2 hour post 75 gram oral glucose tolerance test (OGTT) plasma glucose between 140-199 mg/dl, glycosylated hemoglobin A1c (HbA1c) less than 6.5% as per American Diabetes Association (ADA) criteria.
- Women of childbearing potential (WOCBP) and men must be using an acceptable method of contraception to avoid pregnancy throughout the study in such a manner that the risk of pregnancy is minimized.
Key exclusion criteria (9 listed)
- Patients must not be on anti-diabetes therapy for treatment of Impaired Glucose Tolerance (IGT) and must have a fasting plasma glucose concentration less or equal to 125 mg/dl.
- Type 1 or Type 2 diabetes mellitus (fasting plasma glucose greater than 125 mg/dl).
- Patients must not be on or have received metformin, thiazolidinediones, sulfonylureas, DPP IV inhibitor, or exenatide/liraglutide treatment for treatment of IGT at any time. Patients must not be receiving any of the following medications: thiazide or furosemide diuretics, beta-blockers, or other chronic medications such as hormone replacement therapy with known adverse effects on glucose tolerance levels. Patients taking systemic glucocorticoids will also be excluded.
- Subjects with a history of clinically significant heart disease, peripheral vascular disease, or pulmonary disease.
- Subjects must have a Body Mass Index between 30-35 kg/m2 and stable body weight.
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 |
|---|---|---|
| SaxagliptinAlso: OnglyzaSubjects will be randomized to receive either Saxagliptin 5mg daily orally or placebo for 6 months. All subjects will receive baseline measurements of fasting plasma glucose, free fatty acids, plasma adipocytokines, plasma levels of inflammatory markers and C Reactive Protein (CRP), Intracellular Adhesion Molecule (ICAM), vascular cell adhesion molecule (VCAM), plasma lipids, and glucose tolerance (75 gram oral glucose tolerance test) as well as measurement of liver and myocardial fat content and left ventricular systolic and diastolic function with magnetic resonance imaging/spectroscopy. All subjects will also undergo measurements of monocyte inflammatory proteins at baseline. All subjects will undergo repeat measurements of fasting plasma glucose, Free Fatty Acids, inflammatory markers and adipocytokines, oral glucose tolerance test, monocyte inflammation, as well as hepatic/myocardial fat content determination and left ventricular function at the end of the 6 months. | Drug | Saxagliptin |
| PlaceboSubjects will be randomized to receive either Saxagliptin 5mg daily orally or placebo for 6 months. Prior to randomization, all subjects will receive baseline measurements of fasting plasma glucose, free fatty acids, plasma adipocytokines, plasma levels of inflammatory markers and CRP, ICAM, VCAM, plasma lipids, and glucose tolerance (75 gram oral glucose tolerance test) as well as measurement of liver and myocardial fat content and left ventricular systolic and diastolic function with magnetic resonance imaging/spectroscopy. All subjects will also undergo measurements of monocyte inflammatory proteins at baseline. All subjects will undergo repeat measurements of fasting plasma glucose, Free Fatty Acids, inflammatory markers and adipocytokines, oral glucose tolerance test, monocyte inflammation, as well as hepatic/myocardial fat content determination and left ventricular function at the end of the 6 month treatment period. | Drug | Placebo |
Primary outcome
Myocardial and Hepatic Fat Content (Percentage)
Time frame: 6 months
The percentage change in hepatic fat (%) and myocardial fat (%) from baseline as measured by magnetic resonance imaging and spectroscopy (MRS).
2 secondary outcomes
Left Ventricular Ejection Fraction (LVEF)(%).
Time frame: 6 months
Monocyte Inflammatory Protein NFkappaB(%)
Time frame: 6 months
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 13 Jan 2020.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
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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.
Mandeep Bajaj, MD principal investigator
Baylor College of Medicine
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 4 study testing Saxagliptin in people with Impaired Glucose Tolerance, run by Baylor College of Medicine 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 2 inclusion and 9 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: stopped early, as of the sponsor's last update on 13 Jan 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. Some participants in this study may receive a placebo. 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 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.
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 Jan 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?
Myocardial and Hepatic Fat Content (Percentage) (time frame: 6 months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
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 Jan 2020; AzTrials last refreshed its copy on 8 Nov 2026.