Can cutting carbs and a diabetes drug help kidneys?
NCT ID NCT06094231
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This small pilot study tested whether a low-carb diet (50-100 grams of carbs per day) combined with the diabetes drug dapagliflozin could improve blood sugar control in people with chronic kidney disease and prediabetes or type 2 diabetes. Four participants were split into two groups: one received the diet plus drug, the other received standard care plus the drug. The study was terminated early, so results are limited.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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4 people
The number who actually took part.
- Started
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Sep 2023
- Finished
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Apr 2026
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 70 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Chronic Kidney Disease Stage KDIGO 3a-4 (eGFR eGFR 25-59 mg/min/1.73m²) * Prediabetes or Diabetes according to the Guideline of the American Diabetes Association (HbA1c \>5,7 percent, or fasting glucose values \> 100 mg/dL, or glucose levels \> 140 mg/dL at 2h during an oral glucose tolerance test) * Being overweight (Body Mass Index \> 25.0 kg/m²) * Being able to independently: * \- Perform measurements of blood glucose and ketone levels * \- Use a continous glucose monitor * \- Contact the study team Exclusion Criteria: * Patients who are allergic to SGLT-2-Inhibitors * Patients with autoimmune diabetes (Typ 1 or LADA) * Patients with pancreoprivic diabetes * Patients with a history of ketoacidosis or lactate acidosis * Patients with severe hypoglycemic episodes in the 6 moths prior to inclusion * Patients with bariatric surgery (in the past or planed) * Patients with nephritic range proteinuria (\>3,5g of Albumin/day) * Patients with active malignant diseases * Pregnant or breastfeeding patients
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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6th Medical Department with Nephrology and Dialysis, Clinik Ottakring
Vienna, 1160, Austria
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