Trial Outcomes & Findings for Effect of Saxagliptin and Dapagliflozin on Endothelial Progenitor Cell in Patients With Type 2 Diabetes Mellitus (NCT NCT03660683)

NCT ID: NCT03660683

Last Updated: 2023-06-05

Results Overview

Proportion of cells that migrate through SDF1a in a transwell assay. This proportion is represented as a migratory rating scale from 0-1, with 1 being 100% of cells migrate. A larger value indicates better migratory function of the CD34+ cells.

Recruitment status

TERMINATED

Study phase

PHASE4

Target enrollment

15 participants

Primary outcome timeframe

16 weeks

Results posted on

2023-06-05

Participant Flow

Participant milestones

Participant milestones
Measure
Group A Dapa
Dapagliflozin 10 mg + Saxagliptin Placebo Dapagliflozin 10mg: Dapagliflozin 10mg PO QD
Group B DapaSaxa
Dapagliflozin 10mg + Saxagliptin 5mg Dapagliflozin 10mg: Dapagliflozin 10mg PO QD Saxagliptin 5mg: Saxagliptin 5 mg PO QD
Placebo
Placebo Oral Tablet Placebo Oral Tablet: Matching Placebo Tablets
Overall Study
STARTED
4
5
6
Overall Study
COMPLETED
4
5
6
Overall Study
NOT COMPLETED
0
0
0

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

Effect of Saxagliptin and Dapagliflozin on Endothelial Progenitor Cell in Patients With Type 2 Diabetes Mellitus

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Group A Dapa
n=4 Participants
Dapagliflozin 10 mg + Saxagliptin Placebo Dapagliflozin 10mg: Dapagliflozin 10mg PO QD
Group B DapaSaxa
n=5 Participants
Dapagliflozin 10mg + Saxagliptin 5mg Dapagliflozin 10mg: Dapagliflozin 10mg PO QD Saxagliptin 5mg: Saxagliptin 5 mg PO QD
Placebo
n=6 Participants
Placebo Oral Tablet Placebo Oral Tablet: Matching Placebo Tablets
Total
n=15 Participants
Total of all reporting groups
Age, Categorical
<=18 years
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Age, Categorical
Between 18 and 65 years
3 Participants
n=5 Participants
3 Participants
n=7 Participants
5 Participants
n=5 Participants
11 Participants
n=4 Participants
Age, Categorical
>=65 years
1 Participants
n=5 Participants
2 Participants
n=7 Participants
1 Participants
n=5 Participants
4 Participants
n=4 Participants
Sex: Female, Male
Female
0 Participants
n=5 Participants
1 Participants
n=7 Participants
5 Participants
n=5 Participants
6 Participants
n=4 Participants
Sex: Female, Male
Male
4 Participants
n=5 Participants
4 Participants
n=7 Participants
1 Participants
n=5 Participants
9 Participants
n=4 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Race (NIH/OMB)
Asian
0 Participants
n=5 Participants
2 Participants
n=7 Participants
0 Participants
n=5 Participants
2 Participants
n=4 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
0 Participants
n=4 Participants
Race (NIH/OMB)
Black or African American
3 Participants
n=5 Participants
1 Participants
n=7 Participants
4 Participants
n=5 Participants
8 Participants
n=4 Participants
Race (NIH/OMB)
White
1 Participants
n=5 Participants
2 Participants
n=7 Participants
2 Participants
n=5 Participants
5 Participants
n=4 Participants
Race (NIH/OMB)
More than one race
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Blood Pressure
Systolic
104 mmHg
STANDARD_DEVIATION 5.7 • n=5 Participants
125 mmHg
STANDARD_DEVIATION 9.9 • n=7 Participants
138.8 mmHg
STANDARD_DEVIATION 18.0 • n=5 Participants
127.4 mmHg
STANDARD_DEVIATION 18.1 • n=4 Participants
Blood Pressure
Diastolic
69.5 mmHg
STANDARD_DEVIATION 0.7 • n=5 Participants
78 mmHg
STANDARD_DEVIATION 2.4 • n=7 Participants
82.5 mmHg
STANDARD_DEVIATION 13.5 • n=5 Participants
78.8 mmHg
STANDARD_DEVIATION 10.3 • n=4 Participants
CD34+ Cell Fraction
0.61 percentage of WBC
STANDARD_DEVIATION 0.77 • n=5 Participants
2.35 percentage of WBC
STANDARD_DEVIATION 1.79 • n=7 Participants
3.55 percentage of WBC
STANDARD_DEVIATION 1.74 • n=5 Participants
2.23 percentage of WBC
STANDARD_DEVIATION 1.78 • n=4 Participants
Colony Forming Units (Day 14)
18.9 cfu (integer)
STANDARD_DEVIATION 26.9 • n=5 Participants
12.6 cfu (integer)
STANDARD_DEVIATION 6.9 • n=7 Participants
9.7 cfu (integer)
STANDARD_DEVIATION 7.6 • n=5 Participants
13.4 cfu (integer)
STANDARD_DEVIATION 15.1 • n=4 Participants

PRIMARY outcome

Timeframe: 16 weeks

Proportion of cells that migrate through SDF1a in a transwell assay. This proportion is represented as a migratory rating scale from 0-1, with 1 being 100% of cells migrate. A larger value indicates better migratory function of the CD34+ cells.

Outcome measures

Outcome measures
Measure
Group A Dapa
n=4 Participants
Dapagliflozin 10 mg + Saxagliptin Placebo Dapagliflozin 10mg: Dapagliflozin 10mg PO QD
Group B DapaSaxa
n=5 Participants
Dapagliflozin 10mg + Saxagliptin 5mg Dapagliflozin 10mg: Dapagliflozin 10mg PO QD Saxagliptin 5mg: Saxagliptin 5 mg PO QD
Placebo
n=6 Participants
Placebo Oral Tablet Placebo Oral Tablet: Matching Placebo Tablets
CD 34+ Cell Migratory Function
0.675 score on a scale
Standard Deviation 0.094
0.75 score on a scale
Standard Deviation 0.096
0.253 score on a scale
Standard Deviation 0.352

SECONDARY outcome

Timeframe: 16 weeks from visit 1

Fold change of Gene Expression in T2Dm with CVD relative to visit 1

Outcome measures

Outcome measures
Measure
Group A Dapa
n=4 Participants
Dapagliflozin 10 mg + Saxagliptin Placebo Dapagliflozin 10mg: Dapagliflozin 10mg PO QD
Group B DapaSaxa
n=5 Participants
Dapagliflozin 10mg + Saxagliptin 5mg Dapagliflozin 10mg: Dapagliflozin 10mg PO QD Saxagliptin 5mg: Saxagliptin 5 mg PO QD
Placebo
n=6 Participants
Placebo Oral Tablet Placebo Oral Tablet: Matching Placebo Tablets
CD 34+ Cell Gene Expression
KDR
0.70 fold change
Standard Error 0.13
0.44 fold change
Standard Error 0
1.76 fold change
Standard Error 0.26
CD 34+ Cell Gene Expression
NOS3
1.63 fold change
Standard Error 0.40
4.16 fold change
Standard Error 0.88
0.99 fold change
Standard Error 0.11
CD 34+ Cell Gene Expression
CAT
2.57 fold change
Standard Error 0.52
7.12 fold change
Standard Error 2.14
1.71 fold change
Standard Error 0.28
CD 34+ Cell Gene Expression
CXCL12
6.83 fold change
Standard Error 2.87
4.23 fold change
Standard Error 0
2.34 fold change
Standard Error 0.44
CD 34+ Cell Gene Expression
CXCR4
1.71 fold change
Standard Error 0.27
0.56 fold change
Standard Error 0.07
1.08 fold change
Standard Error 0.08
CD 34+ Cell Gene Expression
EDN1
2.67 fold change
Standard Error 0.79
0.89 fold change
Standard Error 0.06
0.82 fold change
Standard Error 0.08
CD 34+ Cell Gene Expression
GAPDH
2.87 fold change
Standard Error 0.56
3.22 fold change
Standard Error 0.86
4.23 fold change
Standard Error 1.05
CD 34+ Cell Gene Expression
GPX3
0.89 fold change
Standard Error 0.14
0.65 fold change
Standard Error 0.09
3.37 fold change
Standard Error 0.29
CD 34+ Cell Gene Expression
IL6
1.08 fold change
Standard Error 0.18
0.17 fold change
Standard Error 0.02
2.97 fold change
Standard Error 0.48
CD 34+ Cell Gene Expression
P21
1.11 fold change
Standard Error 0.16
1.55 fold change
Standard Error 0.27
1.23 fold change
Standard Error 0.04
CD 34+ Cell Gene Expression
PECAM1
2.86 fold change
Standard Error 0.39
6.19 fold change
Standard Error 1.21
1.69 fold change
Standard Error 0.14
CD 34+ Cell Gene Expression
SOD2
1.96 fold change
Standard Error 0.23
2.23 fold change
Standard Error 0.41
2.19 fold change
Standard Error 0.37
CD 34+ Cell Gene Expression
TNF
1.76 fold change
Standard Error 0.22
0.79 fold change
Standard Error 0.14
1.12 fold change
Standard Error 0.10
CD 34+ Cell Gene Expression
TP53
2.41 fold change
Standard Error 0.63
3.53 fold change
Standard Error 1.07
1.55 fold change
Standard Error 0.21
CD 34+ Cell Gene Expression
VEGFA
1.41 fold change
Standard Error 0.19
6.14 fold change
Standard Error 2.05
1.29 fold change
Standard Error 0.13

SECONDARY outcome

Timeframe: 16 weeks

Quantifying CD34+ cells is based on proportion of the monocytes that are CD34+ to account for any variations in cell harvesting or death during analysis.

Outcome measures

Outcome measures
Measure
Group A Dapa
n=4 Participants
Dapagliflozin 10 mg + Saxagliptin Placebo Dapagliflozin 10mg: Dapagliflozin 10mg PO QD
Group B DapaSaxa
n=5 Participants
Dapagliflozin 10mg + Saxagliptin 5mg Dapagliflozin 10mg: Dapagliflozin 10mg PO QD Saxagliptin 5mg: Saxagliptin 5 mg PO QD
Placebo
n=6 Participants
Placebo Oral Tablet Placebo Oral Tablet: Matching Placebo Tablets
CD 34+ Cell Fraction
1.15 percentage of cells
Standard Error 0.33
3.17 percentage of cells
Standard Error 0.27
1.74 percentage of cells
Standard Error 0.31

SECONDARY outcome

Timeframe: 16 Weeks

Augmentation index was calculated via tonometry with Sphygmocor Device (Pulse Wave Analysis). Augmentation index is calculated as the augmentation pressure (the amplitude of the reflected pulse wave) divided by the pulse pressure (systolic - diastolic) \* 100 to give a percentage of pulse pressure. The software then calculates an estimated Augmentation Index at heart rate of 75 as a form of "normalization." Lower values are generally preferred as they indicate more pliable and healthy arteries.

Outcome measures

Outcome measures
Measure
Group A Dapa
n=4 Participants
Dapagliflozin 10 mg + Saxagliptin Placebo Dapagliflozin 10mg: Dapagliflozin 10mg PO QD
Group B DapaSaxa
n=5 Participants
Dapagliflozin 10mg + Saxagliptin 5mg Dapagliflozin 10mg: Dapagliflozin 10mg PO QD Saxagliptin 5mg: Saxagliptin 5 mg PO QD
Placebo
n=6 Participants
Placebo Oral Tablet Placebo Oral Tablet: Matching Placebo Tablets
Arterial Stiffness - Augmentation Index
Aug Index
13.67 percentage of pulse pressure
Standard Error 2.17
34 percentage of pulse pressure
Standard Error 2.83
25.65 percentage of pulse pressure
Standard Error 0.15
Arterial Stiffness - Augmentation Index
Aug Index @75 Heart Rate
12 percentage of pulse pressure
Standard Error 1
30 percentage of pulse pressure
Standard Error 3.96
27.75 percentage of pulse pressure
Standard Error 1.0

SECONDARY outcome

Timeframe: 16 Weeks

hsCRP

Outcome measures

Outcome measures
Measure
Group A Dapa
n=4 Participants
Dapagliflozin 10 mg + Saxagliptin Placebo Dapagliflozin 10mg: Dapagliflozin 10mg PO QD
Group B DapaSaxa
n=5 Participants
Dapagliflozin 10mg + Saxagliptin 5mg Dapagliflozin 10mg: Dapagliflozin 10mg PO QD Saxagliptin 5mg: Saxagliptin 5 mg PO QD
Placebo
n=6 Participants
Placebo Oral Tablet Placebo Oral Tablet: Matching Placebo Tablets
Blood Biochemistries
1.265 mg/L
Standard Deviation 0.975
1.408 mg/L
Standard Deviation 1.106
4.258 mg/L
Standard Deviation 1.799

SECONDARY outcome

Timeframe: 16 Weeks

Microalbumin/Creatinine Ratio (Proteinuria)

Outcome measures

Outcome measures
Measure
Group A Dapa
n=4 Participants
Dapagliflozin 10 mg + Saxagliptin Placebo Dapagliflozin 10mg: Dapagliflozin 10mg PO QD
Group B DapaSaxa
n=5 Participants
Dapagliflozin 10mg + Saxagliptin 5mg Dapagliflozin 10mg: Dapagliflozin 10mg PO QD Saxagliptin 5mg: Saxagliptin 5 mg PO QD
Placebo
n=6 Participants
Placebo Oral Tablet Placebo Oral Tablet: Matching Placebo Tablets
Renal Function
37.3 mcg/mg
Standard Error 11.9
13.22 mcg/mg
Standard Error 0.96
158.48 mcg/mg
Standard Error 47.76

SECONDARY outcome

Timeframe: 16 Weeks

Protein western analysis of Exosomes released from Kidney Podocyte is a indicator of kidney Podocyte health. Expressed as a ratio normalized to CD9 expression

Outcome measures

Outcome measures
Measure
Group A Dapa
n=4 Participants
Dapagliflozin 10 mg + Saxagliptin Placebo Dapagliflozin 10mg: Dapagliflozin 10mg PO QD
Group B DapaSaxa
n=5 Participants
Dapagliflozin 10mg + Saxagliptin 5mg Dapagliflozin 10mg: Dapagliflozin 10mg PO QD Saxagliptin 5mg: Saxagliptin 5 mg PO QD
Placebo
n=6 Participants
Placebo Oral Tablet Placebo Oral Tablet: Matching Placebo Tablets
Urine Exosome Assay
Nephrin
1.16 ratio
Standard Error 0.10
0.49 ratio
Standard Error 0.10
0.67 ratio
Standard Error 0.13
Urine Exosome Assay
Podocalyxin
2.59 ratio
Standard Error 0.43
2.10 ratio
Standard Error 0.48
0.79 ratio
Standard Error 0.01

SECONDARY outcome

Timeframe: Week 16

Pulse Wave Velocity

Outcome measures

Outcome measures
Measure
Group A Dapa
n=4 Participants
Dapagliflozin 10 mg + Saxagliptin Placebo Dapagliflozin 10mg: Dapagliflozin 10mg PO QD
Group B DapaSaxa
n=5 Participants
Dapagliflozin 10mg + Saxagliptin 5mg Dapagliflozin 10mg: Dapagliflozin 10mg PO QD Saxagliptin 5mg: Saxagliptin 5 mg PO QD
Placebo
n=6 Participants
Placebo Oral Tablet Placebo Oral Tablet: Matching Placebo Tablets
Arterial Stiffness
8.23 m/s
Standard Error 0.16
8.1 m/s
Standard Error 0.14
9.55 m/s
Standard Error 0.22

SECONDARY outcome

Timeframe: 16 Weeks

Augmentation index was calculated via tonometry with Sphygmocor Device (Pulse Wave Analysis). Augmentation index is calculated as the augmentation pressure (the amplitude of the reflected pulse wave) divided by the pulse pressure (systolic - diastolic) \* 100 to give a percentage of pulse pressure. The software then calculates an estimated Augmentation Index at heart rate of 75 as a form of "normalization." Lower values are generally preferred as they indicate more pliable and healthy arteries. Here, augmentation pressure is shown as a reference for the Augmentation Index calculations in the previous section.

Outcome measures

Outcome measures
Measure
Group A Dapa
n=4 Participants
Dapagliflozin 10 mg + Saxagliptin Placebo Dapagliflozin 10mg: Dapagliflozin 10mg PO QD
Group B DapaSaxa
n=5 Participants
Dapagliflozin 10mg + Saxagliptin 5mg Dapagliflozin 10mg: Dapagliflozin 10mg PO QD Saxagliptin 5mg: Saxagliptin 5 mg PO QD
Placebo
n=6 Participants
Placebo Oral Tablet Placebo Oral Tablet: Matching Placebo Tablets
Arterial Stiffness - Augmentation Pressure
4.0 mmHg
Standard Error 0.66
13.5 mmHg
Standard Error 1.55
6.77 mmHg
Standard Error 0.77

OTHER_PRE_SPECIFIED outcome

Timeframe: 16 Weeks

Total Cholesterol, LDL, HDL and VLDL

Outcome measures

Outcome measures
Measure
Group A Dapa
n=4 Participants
Dapagliflozin 10 mg + Saxagliptin Placebo Dapagliflozin 10mg: Dapagliflozin 10mg PO QD
Group B DapaSaxa
n=5 Participants
Dapagliflozin 10mg + Saxagliptin 5mg Dapagliflozin 10mg: Dapagliflozin 10mg PO QD Saxagliptin 5mg: Saxagliptin 5 mg PO QD
Placebo
n=6 Participants
Placebo Oral Tablet Placebo Oral Tablet: Matching Placebo Tablets
Fasting Lipid Profile
Total Cholesterol
155.5 mg/dL
Standard Error 7.2
119.8 mg/dL
Standard Error 3.1
149.4 mg/dL
Standard Error 5.6
Fasting Lipid Profile
HDL
41.5 mg/dL
Standard Error 1.2
37.8 mg/dL
Standard Error 2.5
40.8 mg/dL
Standard Error 1.4
Fasting Lipid Profile
VLDL
20.0 mg/dL
Standard Error 1.4
30.8 mg/dL
Standard Error 4.4
25.4 mg/dL
Standard Error 2.5
Fasting Lipid Profile
LDL
94.0 mg/dL
Standard Error 0.7
51.2 mg/dL
Standard Error 3.1
83.2 mg/dL
Standard Error 4.0

OTHER_PRE_SPECIFIED outcome

Timeframe: 16 Weeks

Measured in fasting state at visit

Outcome measures

Outcome measures
Measure
Group A Dapa
n=4 Participants
Dapagliflozin 10 mg + Saxagliptin Placebo Dapagliflozin 10mg: Dapagliflozin 10mg PO QD
Group B DapaSaxa
n=5 Participants
Dapagliflozin 10mg + Saxagliptin 5mg Dapagliflozin 10mg: Dapagliflozin 10mg PO QD Saxagliptin 5mg: Saxagliptin 5 mg PO QD
Placebo
n=6 Participants
Placebo Oral Tablet Placebo Oral Tablet: Matching Placebo Tablets
Serum Insulin Level
15.5 mcU/mL
Standard Error 2.3
15.8 mcU/mL
Standard Error 1.9
20.2 mcU/mL
Standard Error 2.7

OTHER_PRE_SPECIFIED outcome

Timeframe: 16 Weeks

Fasting Glucose level measured in serum

Outcome measures

Outcome measures
Measure
Group A Dapa
n=4 Participants
Dapagliflozin 10 mg + Saxagliptin Placebo Dapagliflozin 10mg: Dapagliflozin 10mg PO QD
Group B DapaSaxa
n=5 Participants
Dapagliflozin 10mg + Saxagliptin 5mg Dapagliflozin 10mg: Dapagliflozin 10mg PO QD Saxagliptin 5mg: Saxagliptin 5 mg PO QD
Placebo
n=6 Participants
Placebo Oral Tablet Placebo Oral Tablet: Matching Placebo Tablets
Serum Glucose
113.5 mg/dL
Standard Deviation 13.5
106.4 mg/dL
Standard Deviation 24.3
184.8 mg/dL
Standard Deviation 41.6

OTHER_PRE_SPECIFIED outcome

Timeframe: 16 Weeks

Leptin, (Adiponectin, GLP1, Ghrelin in separate entry)

Outcome measures

Outcome measures
Measure
Group A Dapa
n=4 Participants
Dapagliflozin 10 mg + Saxagliptin Placebo Dapagliflozin 10mg: Dapagliflozin 10mg PO QD
Group B DapaSaxa
n=5 Participants
Dapagliflozin 10mg + Saxagliptin 5mg Dapagliflozin 10mg: Dapagliflozin 10mg PO QD Saxagliptin 5mg: Saxagliptin 5 mg PO QD
Placebo
n=6 Participants
Placebo Oral Tablet Placebo Oral Tablet: Matching Placebo Tablets
Appetite Controlling Hormone
8.13 ng/mL
Standard Deviation 3.83
25.60 ng/mL
Standard Deviation 15.64
80.96 ng/mL
Standard Deviation 55.56

OTHER_PRE_SPECIFIED outcome

Timeframe: 16 Weeks

HbA1C (estimate of serum glucose over 3 months)

Outcome measures

Outcome measures
Measure
Group A Dapa
n=4 Participants
Dapagliflozin 10 mg + Saxagliptin Placebo Dapagliflozin 10mg: Dapagliflozin 10mg PO QD
Group B DapaSaxa
n=5 Participants
Dapagliflozin 10mg + Saxagliptin 5mg Dapagliflozin 10mg: Dapagliflozin 10mg PO QD Saxagliptin 5mg: Saxagliptin 5 mg PO QD
Placebo
n=6 Participants
Placebo Oral Tablet Placebo Oral Tablet: Matching Placebo Tablets
Serum Glucose
8.53 percentage of hemoglobin
Standard Deviation 3.16
2.43 percentage of hemoglobin
Standard Deviation 1.62
8.80 percentage of hemoglobin
Standard Deviation 1.47

Adverse Events

Group A Dapa

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

Group B DapaSaxa

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

Placebo

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. Sabyasachi Sen

George Washington University Medical Faculty Associates

Phone: 301-461-6676

Results disclosure agreements

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