Effects of Dapagliflozin and Metformin on Vascular Function in Newly-Diagnosed Treatment-Naive Type 2 Diabetes (DMVascular)


Tan Tock Seng Hospital

Status and phase

Phase 4




Drug: Dapagliflozin
Drug: MetFORMIN 500 Mg Oral Tablet
Drug: Dapagliflozin / metFORMIN Pill

Study type


Funder types




Details and patient eligibility


Trial Design: This is a 12 week randomised controlled open label trial comparing the impact of Dapagliflozin, Metformin and combination therapy on vascular function in newly diagnosed T2DM patients.

Full description

Trial Design: This is a 12 week randomised controlled open label trial comparing the impact of Dapagliflozin, Metformin and combination therapy on vascular function in newly diagnosed T2DM patients. Trial Participants: Approximately 150 newly diagnosed T2DM patients with randomization 1:1:1 to Metformin XR 500mg twice daily, Dapagliflozin 10 mg daily or Metformin XR 500/Dapagliflozin 5 mg daily Primary Aim : To evaluate the influence of intervention on vascular function. Secondary Aims: To evaluate the influence on other parameters of vascular function and beds. To evaluate the haemodynamics involving blood pressure regulation. To evaluate the effects of SGLT2i versus Metformin on endothelial interactions (vascular permeability) and leukocyte-endothelial interactions (leukocyte rolling, adherence), endothelial regenerative capacity and other endothelial related pathways.


150 estimated patients




30 to 65 years old


Accepts Healthy Volunteers

Inclusion criteria

1. Ability to give informed consent 2. Age 30-65 years 3. Newly diagnosed (within the past 1 - 2 years) to have T2DM and not started on diabetes medications, HbA1c 6.4% to 10% (both inclusive) and/or OGTT 0 min glucose ≥7.0mmol/L and/or 120 min glucose ≥11.8mmol/L OR Recently diagnosed to have T2DM and treated with Metformin for not more than 5 years, HbA1c ≤ 8% 4. No recent change in medications or new medications 5. eGFR\>60mL/min/1.73m2 6. Patient is otherwise well with no acute systemic illness in the last 2 weeks. 7. Female participants of child bearing potential and male participants whose partner is of child bearing potential must be willing to ensure that they or their partner use effective contraception during the trial

Exclusion criteria

1. History of ketoacidosis or any other conditions causing acidosis e.g. Alcohol dependence 2. Has a history of urinary tract infections or is at risk for urinary tract infections (e.g prostatomegaly, vesicoureteric reflux, kidney stones) 3. Patients on corticosteroids or immunosuppressive agents 4. Patients known to have HIV infection and/or on anti-retroviral agents 5. Patients with typical clinical features suggestive of T1DM (young onset with no family history of diabetes or first presentation as DKA were excluded). The endocrinologist (PI or co-I) will look at the patient profile to confirm diagnosis of T2DM. 6. Has severe liver dysfunction 7. Considered inappropriate by investigators due to any other reason. 8. Female participant who is pregnant, lactating or planning pregnancy during the course of the trial. 9. Significant renal impairment. 10. Scheduled elective surgery or other procedures requiring general anaesthesia during the trial. 11. Participants who have participated in another research trial involving an investigational product in the past 12 weeks. 12. Participants who have a history of Peripheral Arterial Disease or peripheral vascular disease or complains of lower limb claudication pain. -

Trial design

Primary purpose




Interventional model

Parallel Assignment


None (Open label)

150 participants in 3 patient groups

Active Comparator group
Metformin XR 500 mg tablets - up-to twice daily orally.
Drug: MetFORMIN 500 Mg Oral Tablet
Experimental group
Dapagliflozin 10 mg tablets - once daily
Drug: Dapagliflozin
MetforminXR 500/Dapagliflozin 5mg
Experimental group
MetforminXR 500/Dapagliflozin 5mg , tablets- once daily
Drug: Dapagliflozin / metFORMIN Pill

Trial contacts and locations



Central trial contact

Siti Zaidah; Rinkoo Dalan, MBBS

Data sourced from clinicaltrials.gov

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