The Evaluation of the Drug R3R01 for the Excretion of Protein in the Urine in Patients With Diabetic Kidney Disease.

The goal of this clinical trial is to to investigate whether the drug R3R01 has a beneficial effect on the amount of protein excreted in the urine in adult patients (above 18 years of age) with type 2 diabetes and resulting kidney disease. The main questions it aims to answer are: 1. Does 3 months of treatment with 200mg of the drug R3R01 morning and evening have a beneficial effect on the amount of protein excreted in the urine in patients with type 2 diabetes and kidney disease? 2. Does R3R01 have an effect on kidney function and daily blood pressure? Researchers will compare the results of 40 people who take R3R01 to 20 people who receive an inactive substance (placebo). Participants will receive R3R01 or the placebo as an oral tablet and undergo a selection of medical examinations - such as: * blood samples * urine tests * kidney tests involving a radiolabelled marker which is injected into the bloodstream and monitored via blood samples * 24 hour blood pressure monitoring via a wearable device * urine pregnancy test (if applicable)

An increasing amount of evidence suggests that lipid dysmetabolism and accumulation in the kidneys play a central role in the pathogenesis of kidney disease. This lipotoxicity, in turn, may contribute to the development of albuminuria and chronic kidney disease. One may surmise that interventions that reduce or prevent the progression of kidney lipid accumulation protect against the progression of kidney disease, including diabetic kidney disease (DKD). Therefore, it is possible inhibiting cholesterol absorption, might effectively protect against lipid accumulation and related disease in the kidneys. R3R01 is an ATP-binding cassette transporter A1 (ABCA1) inducer, which increases the efflux of cholesterol from the intracellular space in the kidney. Persons with type 2 diabetes with moderate and severe albuminuria have a poor renal and cardiovascular prognosis. As albuminuria is viewed both as a risk marker but also as a target for intervention, any treatment with antiproteinuric effects could be beneficial. The role of ABCA1 inducer treatment on kidney parameters in diabetic kidney disease is not known. By investigating the impact of ABCA1 inducer treatment on albuminuria, it will be determined whether this intervention may represent a future treatment option. This study is a single center, double-blind, placebo controlled, parallel group randomized (2:1) study, in 60 people with type 2 diabetes with moderate or severe albuminuria and estimated glomerular filtration rate (eGFR) above 30 ml/min/1.73m2. 40 people will take R3R01 whilst 20 people receive the placebo. The study's primary objective is to evaluate the effect of 12 weeks treatment with R3R01 on albuminuria in the study population. In addition to a 12 week treatment period, there will be a follow-up period of approximately 24 weeks (168 days). The expected total duration of study participation is up to 36 weeks for each patient.