A Phase 4 interventional study of Canagliflozin and Placebo in Type 2 Diabetes Mellitus, sponsored by George Washington University. Completed at 1 site in United States. Open to participants aged 30 Years to 70 Years. Per ClinicalTrials.gov, last updated 2022-12-07.
Sponsored by George Washington University · Phase 4, Interventional, and Treatment
The investigators hypothesize that Cana may be able to improve number and function of CD34+ endothelial progenitor cells. The investigators also propose that this expected cardiovascular benefit is independent of HbA1C reduction.
Subjects will begin taking 100 mg of Cana or placebo after initial 4 weeks. Subjects will be withdrawn from the study if the medication or placebo is not tolerated.
Diabetes affects more than 11% of adults in the United States and this is projected to nearly double by 2025. Both diabetes and obesity are associated with endothelial dysfunction, oxidative stress, endothelial cell inflammation, cardiovascular pro-thrombotic states and are the most common causes of kidney disease. Use of a sodium-glucose linked transporter (SGLT-2) inhibitor has shown promise in improving glycemic control, weight reduction, hypertension and even changes in circulating Renin-angiotensin-aldosterone system (RAAS) and nitric oxide (NO). However, whether these group of drugs have any effect on cardiovascular disease (CVD) risk modification or on endothelium or endothelial progenitor cells as a surrogate of cardiovascular and renal risk outcome measure, is unclear.
The investigators have previously shown that CD34+ cells, derived from peripheral blood can act as a cellular biomarker that is more reliable than serum based markers for CVD risk estimation. Serum based inflammatory markers are not useful until the endothelium is already damaged and inflamed. Such serum based biomarkers takes several months to change and gives no preventive and predictable information as to whether a particular medication may affect future endothelium. This is why the study of endothelium progenitors is crucial. In the investigators' previous study of a prediabetes population with an aerobic exercise intervention, the investigators have demonstrated that CD34+ cells are responsive to a change in therapy or intervention within 2-4 weeks and can be used as a reliable non serum based cellular bio-marker. CD34+ cells or endothelial progenitor cells have been used clinically to improve collateral circulation and have been extensively studied as a robust cardiovascular biomarker. Therefore studying CD34+ cells in patients, with or without Canagliflozin (Cana) can give vital information about the medication and its effect on endothelium. This is particularly important as another SGLT2 inhibitor Empagliflozin has shown unparalleled positive cardiovascular effects with an oral hypoglycemic agent. Of course, the question arises whether this clinical trial effect is secondary to glucose effect or direct effect of SGLT2 inhibitor on endothelium.
Multiple glucose transporters have been identified in human cells these include GLUTs, SGLTs and even taste receptors (such as TLR2 and TLR3). The investigators know SGLT transporters are present in tubular cells and clearly blocking of SGLT2 in these cells is beneficial. Information on glucose transporter in stem or progenitor cells is almost nil. In our lab the investigators have shown presence of GLUT1, SGLTs and TLR3 on CD34+ cells. The investigators have also demonstrated that hyperglycemia is toxic to CD34+ cells, more than CD31+ positive mature endothelial cells. The investigators hypothesize that blocking SGLT2 in CD34+ cells will be beneficial rather than detrimental. As far as glucose uptake in CD34+ cells are concerned other glucose transporters should be sufficient, in fact lesser amount of glucose entry in a hyperglycemic milieu (type 2 DM patients) may be less pro-inflammatory and less pro-apoptotic.
Our preliminary data indicates that mRNA gene expression of both SGLT1 and SGLT2 are noted on human CD34+ cells however only SGLT2 mRNA gene expression is up-regulated several fold in human CD34+ cells in presence of hyperglycemia (20mM glucose). However non primary commercially obtained human endothelium (HUVEC) do not show similar results. An explanation could be SGLT2 expression decreases as the cell transitions from progenitor to mature endothelium. From these results the investigators believe SGLT2 inhibitor will be effective on progenitors and not mature endothelium. The investigators therefore hypothesize that CD34+ cells will be an ideal biomarker to study the effect of the drug. It is possible that Cana, by blocking SGLT2 receptors, may influence other CD34+ cell surface receptors including other glucose transporters and influence its function (most importantly migration). If a particular medication positively influences stem/progenitor cell migration then that medication can positively influence endothelial dysfunction and vascular complications from diabetes. The investigators are particularly interested to note effect of Canagliflozin, a SGLT2 inhibitor on other glucose transporters such as GLUT 1 and 4 while looking at SGLT 1 and 2 on CD34+ cells. It will be helpful to discern these effects particularly when choice of oral diabetic medication in a type 2 diabetes population is practically limited to metformin, DPP4 inhibitors and SGLT2 inhibitors. The investigators plan to investigate the effect of Cana on CD34+ cells, in a placebo matched study. The investigators plan to recruit subjects with type 2 diabetes with the following characteristics: 1) overweight, mild and moderately obese (BMI=25.0-39.9); 2) individuals with early type 2 diabetes (≤15 years) with inadequate control, HbA1C= 7.0 to 10.0%, on Metformin (1-2 grams/day) 3) with no history or presence of macrovascular complication and CKD no higher than stage 2. The subjects will be on Metformin as per ADA, Metformin is the 1st line of care along with life-style modification. While Metformin on its own may affect inflammatory biomarkers, the effect is minimal at best, particularly in presence of CKD and endothelial dysfunction. Also both placebo and the cana group will be on Metformin.
The investigators will recruit a total of 40 patients (20 individuals/per group) with approximately a 20% drop out rate over two years and the investigators hope to retain 32 individuals (16/group). Individuals in each group will be matched by sex, age, and race. Participants will be assessed at baseline (week 0), and at 2 and 4 months of drug intake.
10,925 studies on the registry are indexed under Diabetes Mellitus; 1,319 are open to participants now.
This study's enrollment of 34 is below the median of 80 across 8,367 interventional studies indexed under Diabetes Mellitus.
Browse Diabetes Mellitus studies →George Washington University is the lead sponsor of 187 studies on the registry; 34 are open to participants now.
Of its 13 completed or terminated interventional studies of FDA-regulated products, 11 (85%) have results posted.
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100 mg of Canagliflozin for 16 weeks
Drug: Canagliflozin
Placebo for 16 weeks
Drug: Placebo
100 mg
Also known as: INVOKANA
1 tablet daily for 16 weeks
Gene Expression and Function Change of CD34+ Endothelial Progenitor Cells (Protein Expression)
To determine whether 4 months of Canagliflozin modifies CD34+ cell number, gene expression and migration function. The investigators will obtain a total of approximately 95 mL of peripheral blood per visit. Of these 95 mL, 60-70 mL will be used to obtain CD34+ cells from mononuclear cell (MNC) population and 25-35 mL for biochemistry and plasma ELISA assays. MNC will be obtained from whole blood similar to protocols described before \[13,14\]. MNCs will be put through CD34 magnetic bead column to obtain CD34+ cells (Miltenyi Biotec). Purity of CD34+ cells, post sort, usually is above 90%, to be verified by FACS analysis.
Time frame: 16 weeks post Canagliflozin treatment reported
Gene Expression and Function Change of CD34+ Endothelial Progenitor Cells (Cell Percentages)
To determine whether 4 months of Canagliflozin modifies CD34+ cell number, gene expression and migration function. The investigators will obtain a total of approximately 95 mL of peripheral blood per visit. Of these 95 mL, 60-70 mL will be used to obtain CD34+ cells from mononuclear cell (MNC) population and 25-35 mL for biochemistry and plasma ELISA assays. MNC will be obtained from whole blood similar to protocols described before \[13,14\]. MNCs will be put through CD34 magnetic bead column to obtain CD34+ cells (Miltenyi Biotec). Purity of CD34+ cells, post sort, usually is above 90%, to be verified by FACS analysis.
Time frame: 16 weeks post Canagliflozin treatment reported
Gene Expression and Function Change of CD34+ Endothelial Progenitor Cells (Cell Counts)
To determine whether 4 months of Canagliflozin modifies CD34+ cell number, gene expression and migration function. The investigators will obtain a total of approximately 95 mL of peripheral blood per visit. Of these 95 mL, 60-70 mL will be used to obtain CD34+ cells from mononuclear cell (MNC) population and 25-35 mL for biochemistry and plasma ELISA assays. MNC will be obtained from whole blood similar to protocols described before \[13,14\]. MNCs will be put through CD34 magnetic bead column to obtain CD34+ cells (Miltenyi Biotec). Purity of CD34+ cells, post sort, usually is above 90%, to be verified by FACS analysis.
Time frame: 16 weeks post Canagliflozin treatment reported
Gene Expression and Function Change of CD34+ Endothelial Progenitor Cells (Cell Proliferation)
To determine whether 4 months of Canagliflozin modifies CD34+ cell number, gene expression and migration function. The investigators will obtain a total of approximately 95 mL of peripheral blood per visit. Of these 95 mL, 60-70 mL will be used to obtain CD34+ cells from mononuclear cell (MNC) population and 25-35 mL for biochemistry and plasma ELISA assays. MNC will be obtained from whole blood similar to protocols described before \[13,14\]. MNCs will be put through CD34 magnetic bead column to obtain CD34+ cells (Miltenyi Biotec). Purity of CD34+ cells, post sort, usually is above 90%, to be verified by FACS analysis.
Time frame: 16 weeks post Canagliflozin treatment reported
Serum Endothelial Inflammatory Markers (1)
IL-6, and TNF-alpha
Time frame: measured at 8 and 16 (reported) weeks post treatment
Fasting Lipid Profile
Measured from a serum blood Lipid Panel: cholesterol and serum ketone bodies
Time frame: 16 weeks post Canagliflozin treatment reported (also measured at 8 weeks)
Glycemic Control (HbA1C)
As determined by HbA1C values
Time frame: 16 weeks post Canagliflozin treatment reported
BMI
Determined as weight in kg divided by height in meters squared
Time frame: 16 weeks post Canagliflozin treatment
Resting Metabolic Rate (RMR)
Using ReeVue (trademark) machine, with or without SGLT2 inhibitor therapy to ascertain if Cana has any effect on RMR. Other related trials have shown weight loss but effect on metabolic rate has not been studied .
Time frame: 16 weeks post Canagliflozin treatment
Pulse Wave Velocity
Vessel health assessed by using arterial tonometry with the SphygmoCor CP system from ATCOR .
Time frame: 16 weeks post Canagliflozin treatment reported (also measured at 8 weeks)
Serum Endothelial Inflammatory Markers (2)
Highly selective C-reactive protein (hs-CRP)
Time frame: measured at 8 and 16 (reported) weeks post treatment
Glycemic Control
Measured from blood glucose values (fasting) during visit
Time frame: 16 weeks post Canagliflozin treatment reported
Body Fat Percentage
Measured using a Tanita body composition scale
Time frame: 16 weeks post Canagliflozin treatment
Augmentation Index (Pulse Wave Analysis)
Vessel health assessed by using arterial tonometry with the SphygmoCor CP system from ATCOR. Higher values generally correlate with increased cardiovascular risk.
Time frame: 16 weeks post Canagliflozin treatment reported (also measured at 8 weeks)
Kidney Function Markers
Creatinine Clearance and Kidney Function measured from compiled results from a urine sample and blood tests
Time frame: 16 weeks post Canagliflozin treatment reported
Creatinine (Urine)
Creatinine Clearance and Kidney Function measured from compiled results from a urine sample and blood tests
Time frame: 16 weeks post Canagliflozin treatment reported
Microalbumin
Creatinine Clearance and Kidney Function measured from compiled results from a urine sample and blood tests
Time frame: 16 weeks post Canagliflozin treatment reported
eGFR
Creatinine Clearance and Kidney Function measured from compiled results from a urine sample and blood tests
Time frame: 16 weeks post Canagliflozin treatment reported
| Milestone | Active Arm | Placebo Arm |
|---|---|---|
| Started | 15 | 14 |
| Completed | 15 | 14 |
| Not completed | 0 | 0 |
To determine whether 4 months of Canagliflozin modifies CD34+ cell number, gene expression and migration function. The investigators will obtain a total of approximately 95 mL of peripheral blood per visit. Of these 95 mL, 60-70 mL will be used to obtain CD34+ cells from mononuclear cell (MNC) population and 25-35 mL for biochemistry and plasma ELISA assays. MNC will be obtained from whole blood similar to protocols described before \[13,14\]. MNCs will be put through CD34 magnetic bead column to obtain CD34+ cells (Miltenyi Biotec). Purity of CD34+ cells, post sort, usually is above 90%, to be verified by FACS analysis.
| ng/mL in serum | Active Arm | Placebo Arm |
|---|---|---|
| CXCL12 Expression | 0.63 ± 0.18 | 0.33 ± 0.17 |
| CXCR4 Expression | 1.58 ± 0.18 | 0.90 ± 0.18 |
| EDN1 | 2.10 ± 0.27 | 1.03 ± 0.29 |
| VEGEF-A | 1.12 ± 0.19 | 0.83 ± 0.19 |
| PECAM | 1.28 ± 0.12 | 0.89 ± 0.12 |
| KDR | 1.16 ± 0.2 | 0.5 ± 0.2 |
| NOS3 | 0.34 ± 0.21 | -0.25 ± 0.21 |
| Catalase | 0.20 ± 0.26 | -0.61 ± 0.26 |
| GPX35 | 2.25 ± 0.54 | 1.71 ± 0.54 |
| SDF 10 NG | 0.26 ± 0.03 | 0.23 ± 0.03 |
| SOD2 | 1.36 ± 0.24 | 0.92 ± 0.24 |
To determine whether 4 months of Canagliflozin modifies CD34+ cell number, gene expression and migration function. The investigators will obtain a total of approximately 95 mL of peripheral blood per visit. Of these 95 mL, 60-70 mL will be used to obtain CD34+ cells from mononuclear cell (MNC) population and 25-35 mL for biochemistry and plasma ELISA assays. MNC will be obtained from whole blood similar to protocols described before \[13,14\]. MNCs will be put through CD34 magnetic bead column to obtain CD34+ cells (Miltenyi Biotec). Purity of CD34+ cells, post sort, usually is above 90%, to be verified by FACS analysis.
| percentage of MNCs | Active Arm | Placebo Arm |
|---|---|---|
| Percent of CD34+ | 0.93 ± 0.17 | 1.23 ± 0.21 |
| Percent of CD31+ | 2.58 ± 0.35 | 2.16 ± 0.43 |
| Percent CD34+ and CD184+ | 0.37 ± 0.09 | 0.61 ± 0.11 |
To determine whether 4 months of Canagliflozin modifies CD34+ cell number, gene expression and migration function. The investigators will obtain a total of approximately 95 mL of peripheral blood per visit. Of these 95 mL, 60-70 mL will be used to obtain CD34+ cells from mononuclear cell (MNC) population and 25-35 mL for biochemistry and plasma ELISA assays. MNC will be obtained from whole blood similar to protocols described before \[13,14\]. MNCs will be put through CD34 magnetic bead column to obtain CD34+ cells (Miltenyi Biotec). Purity of CD34+ cells, post sort, usually is above 90%, to be verified by FACS analysis.
| cells*10^6/mL | Active Arm | Placebo Arm |
|---|---|---|
| Mean MNC count | 155.09 ± 15.54 | 155.09 ± 16.08 |
| Mean CD34+ve cell count (x100) | 2682.93 ± 491.44 | 3157.36 ± 508.69 |
To determine whether 4 months of Canagliflozin modifies CD34+ cell number, gene expression and migration function. The investigators will obtain a total of approximately 95 mL of peripheral blood per visit. Of these 95 mL, 60-70 mL will be used to obtain CD34+ cells from mononuclear cell (MNC) population and 25-35 mL for biochemistry and plasma ELISA assays. MNC will be obtained from whole blood similar to protocols described before \[13,14\]. MNCs will be put through CD34 magnetic bead column to obtain CD34+ cells (Miltenyi Biotec). Purity of CD34+ cells, post sort, usually is above 90%, to be verified by FACS analysis.
| Colony forming units (CFU) | Active Arm | Placebo Arm |
|---|---|---|
| Gene Expression and Function Change of CD34+ Endothelial Progenitor Cells (Cell Proliferation) | 7.53 ± 1.89 | 13.69 ± 2.10 |
IL-6, and TNF-alpha
| pg/mL | Active Arm | Placebo Arm |
|---|---|---|
| IL-6 | 4.56 ± 4.91 | 3.21 ± 1.82 |
| TNF-alpha | 1.36 ± 0.34 | 1.63 ± 0.53 |
Measured from a serum blood Lipid Panel: cholesterol and serum ketone bodies
| mg/dL | Active Arm | Placebo Arm |
|---|---|---|
| Cholesterol | 171.57 ± 9.84 | 147.76 ± 10.61 |
| HDL | 46.17 ± 3.48 | 51.67 ± 3.69 |
| LDL | 96.03 ± 6.93 | 82.672 ± 8.27 |
| 3-hydroxybutyric acid (ketone body) | 0.02 ± 0.01 | 0.03 ± 0.01 |
| Acetoacetic acid (ketone body) | 0.69 ± 0.24 | 0.30 ± 0.27 |
As determined by HbA1C values
| percentage of hemoglobin | Active Arm | Placebo Arm |
|---|---|---|
| Glycemic Control (HbA1C) | 7.85 ± 1.66 | 8.26 ± 1.52 |
Determined as weight in kg divided by height in meters squared
| kg/m^2 | Active Arm | Placebo Arm |
|---|---|---|
| BMI | 30.53 ± 1.29 | 34.64 ± 1.36 |
Using ReeVue (trademark) machine, with or without SGLT2 inhibitor therapy to ascertain if Cana has any effect on RMR. Other related trials have shown weight loss but effect on metabolic rate has not been studied .
| kcal/day | Active Arm | Placebo Arm |
|---|---|---|
| Resting Metabolic Rate (RMR) | 1999.31 ± 67.45 | 1863.01 ± 165.91 |
Vessel health assessed by using arterial tonometry with the SphygmoCor CP system from ATCOR .
| m/s | Active Arm | Placebo Arm |
|---|---|---|
| Pulse Wave Velocity | 10.12 ± 0.63 | 11.42 ± 0.70 |
Highly selective C-reactive protein (hs-CRP)
| mg/L | Active Arm | Placebo Arm |
|---|---|---|
| Serum Endothelial Inflammatory Markers (2) | 0.63 ± 0.2 | 0.92 ± 0.2 |
Measured from blood glucose values (fasting) during visit
| mg/dL | Active Arm | Placebo Arm |
|---|---|---|
| Glycemic Control | 142.79 ± 45.24 | 158.0 ± 38.4 |
Measured using a Tanita body composition scale
| percentage of body mass | Active Arm | Placebo Arm |
|---|---|---|
| Body Fat Percentage | 32.46 ± 2.32 | 38.58 ± 2.63 |
Vessel health assessed by using arterial tonometry with the SphygmoCor CP system from ATCOR. Higher values generally correlate with increased cardiovascular risk.
| percent aug pressure of pulse pressure | Active Arm | Placebo Arm |
|---|---|---|
| Augmentation Index (Pulse Wave Analysis) | 28.67 ± 2.8 | 21.37 ± 3.2 |
Creatinine Clearance and Kidney Function measured from compiled results from a urine sample and blood tests
| ug/dL | Active Arm | Placebo Arm |
|---|---|---|
| PODXL | 6.62 ± 0.30 | 6.68 ± 0.4 |
| Nephrin | 5.24 ± 0.50 | 5.87 ± 0.65 |
| Wilm's Tumor | 5.75 ± 0.59 | 6.36 ± 0.75 |
Creatinine Clearance and Kidney Function measured from compiled results from a urine sample and blood tests
| mmol/L | Active Arm | Placebo Arm |
|---|---|---|
| Creatinine (Urine) | 77.08 ± 15.58 | 106.23 ± 15.62 |
Creatinine Clearance and Kidney Function measured from compiled results from a urine sample and blood tests
| mg/g creatinine | Active Arm | Placebo Arm |
|---|---|---|
| Microalbumin | 33.97 ± 13.24 | 43.41 ± 26.17 |
Creatinine Clearance and Kidney Function measured from compiled results from a urine sample and blood tests
| mL/min | Active Arm | Placebo Arm |
|---|---|---|
| eGFR | 79.90 ± 4.21 | 88.33 ± 4.52 |
Collected over Adverse event data was collected from signing of consent form to 30 days after last treatment day, approximately 20 weeks in total.. Non-serious events are listed at a 0% frequency threshold.
| Group | Deaths | Serious | Other |
|---|---|---|---|
| Active Arm | 0/15 (0%) | 0/15 (0%) | 0/15 (0%) |
| Placebo Arm | 0/14 (0%) | 0/14 (0%) | 0/14 (0%) |
| Age, Continuous(years) | Active Arm | Placebo Arm | Total |
|---|---|---|---|
| Mean | 55.64 ± 7.75 | 59.15 ± 11.24 | 57.72 ± 9.65 |
| Sex: Female, Male(Participants) | Active Arm | Placebo Arm | Total |
|---|---|---|---|
| Female | 7 | 6 | 13 |
| Male | 8 | 8 | 16 |
| Race (NIH/OMB)(Participants) | Active Arm | Placebo Arm | Total |
|---|---|---|---|
| American Indian or Alaska Native | 0 | 0 | 0 |
| Asian | 4 | 1 | 5 |
| Native Hawaiian or Other Pacific Islander | 0 | 0 | 0 |
| Black or African American | 6 | 9 | 15 |
| White | 5 | 4 | 9 |
| More than one race | 0 | 0 | 0 |
| Unknown or Not Reported | 0 | 0 | 0 |
| Region of Enrollment(participants) | Active Arm | Placebo Arm | Total |
|---|---|---|---|
| United States | 15 | 14 | 29 |
| BMI(kg/m^2) | Active Arm | Placebo Arm | Total |
|---|---|---|---|
| Mean | 30.71 ± 1.41 | 33.11 ± 1.08 | 31.55 ± 0.92 |
| Body Fat Percentage(percentage of body fat) | Active Arm | Placebo Arm | Total |
|---|---|---|---|
| Mean | 32.92 ± 2.39 | 39.65 ± 2.64 | 36.14 ± 1.86 |
| HbA1C(percentage of hemoglobin) | Active Arm | Placebo Arm | Total |
|---|---|---|---|
| Mean | 8.39 ± 0.36 | 7.93 ± 0.33 | 8.14 ± 0.24 |
| eGFR(mL/min) | Active Arm | Placebo Arm | Total |
|---|---|---|---|
| Mean | 80.24 ± 4.27 | 85.22 ± 4.43 | 82.43 ± 3.08 |
18 further baseline measures are reported on the registry.
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George Washington University