NCT07902726Not yet recruitingPhase 2
Adding Acetazolamide on Top of SGLT2 Inhibition in Persons With Type 2 Diabetes
Adding Acetazolamide on Top of SGLT2 Inhibition in Persons With Type 2 Diabetes ('DIPPER') Pilot Study
Source: ClinicalTrials.gov · Last updated 29 Oct 2026
Brief summary (registry, in English)
The study aims to determine the acute efficacy and safety of three sequential doses of acetazolamide (62.5 mg, 125 mg, 250 mg) each for 2 weeks in 20 patients with T2D receiving background SGLT2i therapy.
- Status (registry)
- Not yet recruiting
- Phase (registry)
- Phase 2
- Study type
- Interventional
- Enrollment
- 20 (estimated)
- First submitted
- 20 Oct 2026
- Start date
- 1 Dec 2026
- Primary completion date
- 1 Dec 2028
- Lead sponsor
- University Health Network, Toronto
- Diseases
- Type 2 diabetes
- NCT number
- NCT07902726
What you commit to
- Study type: Interventional · Phase 2
- Planned participants: 20
- From 1 Dec 2026 to the primary completion date, 1 Dec 2028
- 1 site in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- Use of carbonic anhydrase inhibitor in the 30 days prior to screening
- Acute coronary syndrome, stroke or transient ischemic attack within 30 days prior to screening
- Participation in another drug trial within 30 days of screening
Other illness
- Established diagnosis of type 1 diabetes as per Diabetes Canada
- With known or suspected hypersensitivity or allergy to acetazolamide, dapagliflozin or related products
- Untreated urinary or genital tract infection
- Any other clinical condition that, based on Investigator's judgement, would jeopardize patient safety during trial participation or would affect the study outcome
Lab values
- Serum potassium \<3.5 mmol/L
- Serum bicarbonate \<22 mEq/L
- Liver disease (hepatic cirrhosis, alcohol/drug abuse ≥3 months, or serum AST, ALT, or total bilirubin \>3X the upper limit of normal)
Other
- Iodine intolerance
- Severe glaucoma
- Active pregnancy, breastfeeding or planning to become pregnant during study period
- Patient not able to understand and comply with study requirements, based on Investigator's judgment.
Who the study is looking for
- Signed and dated written informed consent.
- Adult (≥18 years) at the time of consent
- Established T2D diagnosis as per Diabetes Canada
- HbA1c ≤10.0%
- eGFR ≥45 ml/min/1.73m2
- BP ≤160/90 and ≥90/60 mmHg
- BMI 18.5-45.0 kg/m2
- On stable dose of maximally tolerated RAASi for ≥30 days
Age in the registry: 18 years to - · Sex: All · Does not accept healthy volunteers
Sites (1)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Toronto General Hospital Coordinator of this site? Confirm its status | Toronto | Canada | Unknown status |
This page is information, not medical advice. Discuss any trial with your doctor.