CLIgAN: Multicentre Clinical Study to Evaluate the Effect of Personalized Therapy on Patients With Immunoglobulin A Nephropathy.

Sponsor

Fondazione Schena (Other)

Overall Status

Not yet recruiting

CT.gov ID

NCT04662723

Collaborator

University of Bari (Other)

878

Enrollment

Arms

Anticipated Duration (Months)

Study Details

Study Description

Brief Summary

Idiopathic immunoglobulin A nephropathy (IgAN) is the most common biopsy-proven glomerulonephritis in the world. Approximately 40% of IgAN patients reach end-stage kidney disease (ESKD) 20 years after their kidney biopsy. The high prevalence of ESKD suggests the need to move from a generalized therapy for all patients to personalized therapy.

Many RCTs have been conducted stratifying patients based on the laboratory findings (serum creatinine, eGFR and daily proteinuria). In contrast, data from the kidney biopsy has been used only for clinical diagnosis. Therefore, IgAN patients with acute and/or chronic renal lesions have been equally distributed in experimental and control arms of the randomized clinical trials (RCTs) The clinical study of IgAN (CLIgAN) is a multicentre, prospective, controlled and open-label randomized clinical trial based on patients' stratification at the time of their kidney biopsy. The investigators will consider, first, the type of renal lesions followed by the serum creatinine values, eGFR and proteinuria. IgAN patients with active renal lesions (n=132) will be enrolled in the first RCT (ACIgAN) in which they will receive corticosteroids combined with RASB or only RASB. IgAN patients with chronic renal lesions (n=294) will be enrolled in the second RCT (CHRONIgAN) in which they will receive the SGLT2 inhibitor combined with RASB compared with RASB alone. Using this approach, the investigators hypothesize that patients could receive personalized therapy based on renal lesions to ensure that the right drug gets to the right patient at the right time.

Recently, we developed a Clinical Decision Support System (CDSS) tool using artificial intelligence (artificial neural networks) to identify IgAN patients at high risk of developing ESKD. The IgAN tool was validated in a retrospective cohort of IgAN patients but not in a prospective clinical study. The investigators propose to measure the power of the CDSS tool in patients enrolled in both RCTs to determine whether personalized therapy can slow the decline of the renal function to delay the ESKD.

The CLIgAN study also includes a cutting-edge molecular study for precision therapy (PRECIgAN).

Condition or Disease	Intervention/Treatment	Phase
Glomerulonephritis Immunoglobulin A Nephropathy	Drug: Corticosteroid Drug: Renin-angiotensin sytem blockers Drug: Sodium-glucose cotransporter 2 inhibitor	Phase 4

Detailed Description

BACKGROUND AND RATIONALE. Idiopathic Immunoglobulin A nephropathy (IgAN) is the most common biopsy-proven glomerulonephritis in the world. It is more prevalent in Asia than in Europe and the US worldwide. Approximately 40% of IgAN patients reach end-stage kidney disease (ESKD) 20 years after their kidney biopsy. The high prevalence of ESKD shows that IgAN has a significant economic impact in the all countries because renal replacement therapy is costly. Moreover, the disease's onset in the second and third decades of life represents a social challenge because young adult patients are very active and highly productive in the workplace. This challenge is one more reason to move from a generalized therapy for all patients to a personalized therapy.

The first edition of the KDIGO guidelines, published in 2012, suggested different therapeutic approaches for IgAN patients based on the clinical setting. Unfortunately, the KDIGO guidelines do not consider the presence of acute and chronic renal lesions at the time of the kidney biopsy for therapy decision. The investigators of the clinical study in IgAN patients (CLIgAN) will consider for the patient's stratification the type of renal lesions, preliminarily, and then the clinical parameters as estimated glomerular filtration rate (eGFR) and proteinuria because the categorization of proteinuria and eGFR is not enough for a complete diagnosis of the disease.

AIMS. Considering the critical role of kidney biopsy, in this CLIgAN study the investigators plan to evaluate (i) the effect of corticosteroids combined with RASBs in IgAN patients with active renal lesions (ACIgAN) versus RASBs alone to determine whether the renal lesions are reversed by corticosteroids; (ii) the effect of SGLT2i in patients with chronic renal lesions (CHRONIgAN) to determine whether a delay of the ESKD onset is achieved; (iii) after the prediction of ESKD through the IgAN CDSS tool to determine whether personalized therapy delays the impairment of the renal function; (iv) finally, on a small cohort of active and chronic IgAN patients enrolled in the CLIgAN study, a cutting edge-molecular study will be conducted to evaluate the effect of precision therapy (PRETIgAN).

STUDY DESIGN. The investigators have designed a prospective, multicentre, open-label clinical study that includes two multicentre randomized controlled trials (RCTs) based on the kidney biopsy report.

In the first RCT, patients with active renal lesions (E1 and/or C1,2), daily proteinuria >0.5 g and GFR ≥ 30 ml/min/1.72 m2 will be enrolled. They will be randomized to receive corticosteroids combined with RASBs in the experimental arm or RASBs alone in the control arm. Aim of this trial is to demostrate the benefit of corticosteroids in patients with active renal lesions.

In the second RCT, patients with chronic renal lesions (T1,2) and patients with moderate renal lesions (M0,1; S0,1; T0; E0; C0) at high or very high CKD risk (proteinuria> 0.5 g/day and GFR ≥ 30ml/min/1.73 m2) will be enrolled. They will be randomized to receive SGLT2 inhibitor (SGLT2i) combined with RASBs (experimental arm) or RASBs alone (control arm). Aim of this trial is demostrate the benefit of SGLT2i combined with RASBs.

In conclusion, we have designed two RCTs (i) to study personalized therapy in biopsy-proven IgAN patients and (II) to monitor the outcomes to look at whether personalized therapy may delay the time to reach the ESKD predicted by our IgAN tool.

RECRUITMENT AND FOLLOW-UP. Renal Units will be involved in the enrollment of IgAN patients during a period of three years. The follow-up study to measure the outcomes will consist of regular visits at the prescribed times and to collect clinical and laboratory data and information on drug adherence. Before the trial is complete, each patient will receive a final visit in the outpatient section.

OTHER MEAUSURES. Age, body mass index, eradication of infectious foci, or concurrent antibiotic therapy to prevent infections or to avoid the transformation of a trivial infection into a severe complication will be considered. In addition, home and life conditions and culture will be analyzed. Regular daily exercise to prevent obesity and cardiovascular disease will be prescribed.

Dietary counseling. Patients with CKD stage 1 and 2 will observe the Mediterranean diet combined with reduced intake of proteins (1.0 - 0.8 g/kg bw/day). A reduced intake of proteins (0.6 - 0.8 g/kg bw/day) will also be prescribed to patients with CKD stage 3. Salt intake will be limited to 1.5 g/day. Dietary compliance will be assessed by measuring daily urinary sodium and urea excretion. Physical activity will be observed for 30 min. every day, primarily in the morning.

Severe adverse events. Infections, impaired glucose tolerance, weight gain, hypoglycemia will be monitored during the follow-up.

VARIABLES OF THE DISEASE. Kidney biopsy will be scored according to the Oxford classification because it is a simple method for predicting renal outcomes and for differentiating active and chronic renal lesions. Therefore, the kidney biopsy will be the principal key-note, not only for diagnosis but also for personalized therapy, because active renal lesions (E1,C1,2) will be treated with immediate corticosteroid therapy before lesions become chronic. In some RCTs IgAN patients received six months of RASBs treatment before their enrollment for corticosteroid therapy. In our opinion this approach is not correct because the acute renal lesions evolve in the chronic stage and are no-responsive to corticosteroid therapy. Therefore, the aim of the first RCT is early treatment of the active renal lesions because they are responsible for altered GFR and proteinuria.

The definition of remission or no response of the MESTC lesions to therapy in published studies is inconsistent. Therefore, high-quality clinical trials with a large sample size are necessary to define the response of histological renal lesions to corticosteroids in biopsy-proven IgAN. The kidney biopsy will be analyzed using digital histopathologic analysis coupled with machine-learning tools. At least eight glomeruli will be available for a correct diagnosis. Renal tissue sections will be stained with hematoxylin and eosin, periodic acid-Schiff and methenamine silver. The last edition of the Oxford classification (MESTC) will be used for scoring the renal lesions.

Three independent renal pathologists, blinded to the study results, will score the lesions in the kidney biopsy using the Aperio System. The histology report will be necessary for the enrollment of patients. No larger RCT has confirmed that the disease improves when clinical decisions are made in a short time in the presence of the MESTC score.

Serum creatinine will be measured using enzymatic methods calibrated to the National Institute of Standards and Technology's (NIST) liquid chromatography isotope dilution mass spectrometry method. eGFR creatinine will be evaluated by the CKD-EPI formula. Moreover, the slope of eGFR (16) will be calculated. Patients, categorized in CKD stages 1 to 3, will be included in the clinical study.
Proteinuria. Patients will collect 24 hour urine for proteinuria. Values of >0.5 g/ day will be considered abnormal. Proteinuria reduction (geometric mean of 30% within 6 months), time-average proteinuria (TA-P) and slope of proteinuria will be evaluated.

Serum creatinine, proteinuria, age and hypertension have a lower weight when histological lesions are not considered. This finding highlights the importance of the kidney biopsy, not only for diagnosis but for personalized treatment.

Blood hypertension is defined when values are > 130/80 mmHg or in subjects treated with anti-hypertensive drugs.
For hyperuricemia allopurinol therapy is recommended.

SAMPLE SIZE CALCULATION.

ACIgAN. Data from the literature show a difference in renal survival between corticosteroids and controls when we assume a difference of 50% in the primary end point (i.e. in the between-arms difference of delta 24 hour proteinuria from baseline to 6 months) as clinically relevant. We assume that a mean delta proteinuria (±SD) from baseline to 6 months in patients treated with Ramipril alone (control arm) is 0.6±1.0 g/24 hours versus a mean delta proteinuria (±SD) from baseline to 6 months in patients treated with Ramipril and corticosteroids (experimental arm) 1.2±1.0 g/24 hours. Based on these assumptions, we calculated a sample size of 132 patients (66 patients per group including a 10% dropout rate) for a power of 90%, a two-sided significance level of 0.05 and 3 years of recruitment. If the number of the enrolled patients will be insufficient, the recruitment period will be extended for two years. At 6 months, all patients of the control arm who will display a 24 hour proteinuria >0.5g will be switched to the experimental treatment and will receive corticosteroids for 3 months. They will be followed-up until the study termination.

CHRONIgAN. Data from the literature suggest a difference of renal survival between SGLT2is and controls. Here we assume a difference of 40% in the primary end point (i.e. in the between-arms difference of delta 24 hour proteinuria from baseline to 6 months) as clinically relevant. We assume that a mean delta proteinuria (±SD) from baseline to 6 months in patients with Ramipril alone is 0.6±1.0 g/24 hours versus a mean delta proteinuria (±SD) from baseline to 6 months in patients treated with SGLT-2 inhibitor and Ramipril (1.0±1.0 g/24 hours). Based on these assumptions, we have calculated a sample size of 294 patients (147 patients per group including a 10% dropout rate) for a power of 90%, a two-sided significance level of 0.05 and 3 years of recruitment. If the time-recruitment will be insufficient, the recruitment period will be extended for two years. At 6 months, all patients of the control arm who will display a 24 hour proteinuria >0.5 g will be switched to the experimental treatment (SGLT-2 inhibitor combined with Ramipril). They will be followed-up until the study termination.

Study Design

Study Type:

Interventional

Anticipated Enrollment :

878 participants

Allocation:

Randomized

Intervention Model:

Parallel Assignment

Intervention Model Description:

After the enrolment the eligible biopsy-proven IgAN patients will be randomized, separately, in each trial in a 1 to 1 ratio via a web-based program generating random numbers. The allocation will be not blinded to the group of assignment.After the enrolment the eligible biopsy-proven IgAN patients will be randomized, separately, in each trial in a 1 to 1 ratio via a web-based program generating random numbers. The allocation will be not blinded to the group of assignment.

Masking:

None (Open Label)

Primary Purpose:

Treatment

Official Title:

Multicentre Prospective Open Label Clinical Study to Evaluate the Effect of Personalized Therapy on Patients With Immunoglobulin A Nephropathy.

Anticipated Study Start Date :

Jan 1, 2022

Anticipated Primary Completion Date :

Jul 31, 2024

Anticipated Study Completion Date :

Dec 31, 2026

Arms and Interventions

Arm	Intervention/Treatment
Experimental: Corticosteroids combined with RASBs Patients assigned to the corticosteroid group will receive (pulse) methylprednisolone succinate 500-1000 mg/day for 3 consecutive days followed by oral prednisolone (0.5 mg/kg/bw) on alternate days until the end of month. This treatment will be repeated for three consecutive months. In addition, patients will receive RASBs that will be titrated to their maximum anti-proteinuric effect. The dose of methylprednisolone succinate will be individualized (15 mg/kg) based on the ideal body weight. In overweight and obese IgAN patients the ideal body weight will be considered. The drug will be administered in a single daily dose intravenously for 30-60 min. To avoid obesity and diabetes corticosteroids will be administered only in the morning.	Drug: Corticosteroid To reduce the progression of renal damage in IgAN Patients Other Names: Methylprednisolone succinate prednisolone Drug: Renin-angiotensin sytem blockers To reduce the progression of renal damage in IgAN Patients Other Names: Ramipril lisinopril losartan
Active Comparator: RASBs Patients will receive RASBs alone that will be titrated to their maximum anti-proteinuric effect.	Drug: Renin-angiotensin sytem blockers To reduce the progression of renal damage in IgAN Patients Other Names: Ramipril lisinopril losartan
Experimental: SGLT2i combined with Ramipril IgAN patients with chronic renal lesions (T1,2) or moderate renal lesions (M0,1; S0,1; T0; E0; C0) at high or very high CKD risk (proteinuria> 0.5 g/day and GFR >30ml/min/1.73 m2) will receive SGLT2i combined with RASBs.	Drug: Renin-angiotensin sytem blockers To reduce the progression of renal damage in IgAN Patients Other Names: Ramipril lisinopril losartan Drug: Sodium-glucose cotransporter 2 inhibitor To reduce the progression of renal damage in IgAN Patients Other Names: dapagliflozin canagliflozin empagliflozin
Active Comparator: Ramipril IgAN patients with chronic renal lesions (T1,2) or moderate renal lesions (M0,1; S0,1; T0; E0; C0) at high or very high CKD risk (proteinuria> 0.5 g/day and GFR >30ml/min/1.73 m2) will receive RASBs alone.	Drug: Renin-angiotensin sytem blockers To reduce the progression of renal damage in IgAN Patients Other Names: Ramipril lisinopril losartan

Outcome Measures

Primary Outcome Measures

-Proteinuria reduction within 6 months in IgAN patients with active renal lesions [6th month]
Reduction of proteinuria will be calculated as difference betweeen arms within 6 months
Proteinuria reduction within 6 months in IgAN patients with active renal lesions [12th month]
Reduction of proteinuria will be calculated as difference betweeen arms within every 6 months
Proteinuria reduction within 6 months in IgAN patients with active renal lesions [18th month]
Reduction of proteinuria will be calculated as difference betweeen arms within every 6 months
Proteinuria reduction within 6 months in IgAN patients with active renal lesions [24th month]
Reduction of proteinuria will be calculated as difference betweeen arms within every 6 months
Proteinuria reduction within 6 months in IgAN patients with active renal lesions [30th month]
Reduction of proteinuria will be calculated as difference betweeen arms within every 6 months
Proteinuria reduction within 6 months in IgAN patients with active renal lesions [36th month]
Reduction of proteinuria will be calculated as difference betweeen arms within every 6 months
Proteinuria reduction within 6 months in IgAN patients with chronic renal lesions [6th month]
Reduction of proteinuria will be calculated as difference betweeen arms within every 6 months
Proteinuria reduction within 6 months in IgAN patients with chronic renal lesions [12th month]
Reduction of proteinuria will be calculated as difference betweeen arms within every 6 months
Proteinuria reduction within 6 months in IgAN with chronic renal lesions [18th month]
Reduction of proteinuria will be calculated as difference betweeen arms within every 6 months
Proteinuria reduction within 6 months in IgAN patients with chronic renal lesions [24th month]
Reduction of proteinuria will be calculated as difference betweeen arms within every 6 months
Proteinuria reduction within 6 months in IgAN with chronic renal lesions [30th month]
Reduction of proteinuria will be calculated as difference betweeen arms within every 6 months
Proteinuria reduction within 6 months in IgAN with chronic renal lesions [36th month]
Reduction of proteinuria will be calculated as difference betweeen arms within every 6 months

Secondary Outcome Measures

eGFR slope change in IgAN patients with active renal lesions [6th month]
eGFR slope change calculated as the mean of the individual slopes obtained from individual linear regression of eGFR over time;
eGFR slope change in IgAN patients with active renal lesions [12th month]
eGFR slope change calculated as the mean of the individual slopes obtained from individual linear regression of eGFR over time;
eGFR slope change in IgAN patients with active renal lesions [18th month]
eGFR slope change calculated as the mean of the individual slopes obtained from individual linear regression of eGFR over time;
eGFR slope change in IgAN patients with active renal lesions [24th month]
eGFR slope change calculated as the mean of the individual slopes obtained from individual linear regression of eGFR over time;
eGFR slope change in IgAN patients with active renal lesions [30th month]
eGFR slope change calculated as the mean of the individual slopes obtained from individual linear regression of eGFR over time;
eGFR slope change in IgAN patients with active renal lesions [36th month]
eGFR slope change calculated as the mean of the individual slopes obtained from individual linear regression of eGFR over time;
eGFR slope change in IgAN patients with chronic renal lesions [6th month]
eGFR slope change calculated as the mean of the individual slopes obtained from individual linear regression of eGFR over time;
eGFR slope change in IgAN patients with chronic renal lesions [12th month]
eGFR slope change calculated as the mean of the individual slopes obtained from individual linear regression of eGFR over time;
eGFR slope change in IgAN patients with chronic renal lesions [18th month]
eGFR slope change calculated as the mean of the individual slopes obtained from individual linear regression of eGFR over time;
eGFR slope change in IgAN patients with chronic renal lesions [24th month]
eGFR slope change calculated as the mean of the individual slopes obtained from individual linear regression of eGFR over time;
eGFR slope change in IgAN patients with chronic renal lesions [30th month]
eGFR slope change calculated as the mean of the individual slopes obtained from individual linear regression of eGFR over time;
eGFR slope change in IgAN patients with chronic renal lesions [36th month]
eGFR slope change calculated as the mean of the individual slopes obtained from individual linear regression of eGFR over time;
eGFR decline >40% in IgAN patients with active renal lesions [6th month]
eGFR decline >40% in IgAN patients with active renal lesions
eGFR decline >40% in IgAN patients with active renal lesions [12th month]
eGFR decline >40% in IgAN patients with active renal lesions
eGFR decline >40% in IgAN patients with active renal lesions [18th month]
eGFR decline >40% in IgAN patients with active renal lesions
eGFR decline >40% in IgAN patients with active renal lesions [24th month]
eGFR decline >40% in IgAN patients with active renal lesions
eGFR decline >40% in IgAN patients with active renal lesions [30th month]
eGFR decline >40% in IgAN patients with active renal lesions
eGFR decline >40% in IgAN patients with active renal lesions [36th month]
eGFR decline >40% in IgAN patients with active renal lesions
eGFR decline >40% in IgAN patients with chronic renal lesions [6th month]
eGFR decline >40% in IgAN patients with chronic renal lesions
eGFR decline >40% in IgAN patients with chronic renal lesions [12th month]
eGFR decline >40% in IgAN patients with chronic renal lesions
eGFR decline >40% in IgAN patients with chronic renal lesions [18th month]
eGFR decline >40% in IgAN patients with chronic renal lesions
eGFR decline >40% in IgAN patients with chronic renal lesions [24th month]
eGFR decline >40% in IgAN patients with chronic renal lesions
eGFR decline >40% in IgAN patients with chronic renal lesions [30th month]
eGFR decline >40% in IgAN patients with chronic renal lesions
eGFR decline >40% in IgAN patients with chronic renal lesions [36th month]
eGFR decline >40% in IgAN patients with chronic renal lesions
composite endpoint: eGFR decline > 40%, ESKD (defined as long-term eGFR < 15 ml/min/1.73m2 for more than 3 months or need of maintenance dialysis or kidney transplantation) and death due to kidney disease in IgAN patients with active renal lesions [6th month]
composite endpoint: eGFR decline > 40%, ESKD (defined as long-term eGFR < 15 ml/min/1.73m2 for more than 3 months or need of maintenance dialysis or kidney transplantation) and death due to kidney disease in IgAN patients with active renal lesions
composite endpoint: eGFR decline > 40%, ESKD (defined as long-term eGFR < 15 ml/min/1.73m2 for more than 3 months or need of maintenance dialysis or kidney transplantation) and death due to kidney disease in IgAN patients with active renal lesions [12th month]
composite endpoint: eGFR decline > 40%, ESKD (defined as long-term eGFR < 15 ml/min/1.73m2 for more than 3 months or need of maintenance dialysis or kidney transplantation) and death due to kidney disease in IgAN patients with active renal lesions
composite endpoint: eGFR decline > 40%, ESKD (defined as long-term eGFR < 15 ml/min/1.73m2 for more than 3 months or need of maintenance dialysis or kidney transplantation) and death due to kidney disease in IgAN patients with active renal lesions [18th month]
composite endpoint: eGFR decline > 40%, ESKD (defined as long-term eGFR < 15 ml/min/1.73m2 for more than 3 months or need of maintenance dialysis or kidney transplantation) and death due to kidney disease in IgAN patients with active renal lesions
composite endpoint: eGFR decline > 40%, ESKD and death due to kidney disease in IgAN patients with active renal lesions [24th month]
composite endpoint: eGFR decline > 40%, ESKD (defined as long-term eGFR < 15 ml/min/1.73m2 for more than 3 months or need of maintenance dialysis or kidney transplantation) and death due to kidney disease in IgAN patients with active renal lesions
composite endpoint: eGFR decline > 40%, ESKD and death due to kidney disease in IgAN patients with active renal lesions [30th month]
composite endpoint: eGFR decline > 40%, ESKD (defined as long-term eGFR < 15 ml/min/1.73m2 for more than 3 months or need of maintenance dialysis or kidney transplantation) and death due to kidney disease in IgAN patients with active renal lesions
composite endpoint: eGFR decline > 40%, ESKD and death due to kidney disease in IgAN patients with active renal lesions [36th month]
composite endpoint: eGFR decline > 40%, ESKD (defined as long-term eGFR < 15 ml/min/1.73m2 for more than 3 months or need of maintenance dialysis or kidney transplantation) and death due to kidney disease in IgAN patients with active renal lesions
composite endpoint: eGFR decline > 40%, ESKD and death due to kidney disease in IgAN patients with chronic renal lesions [6th month]
composite endpoint: eGFR decline > 40%, ESKD (defined as long-term eGFR < 15 ml/min/1.73m2 for more than 3 months or need of maintenance dialysis or kidney transplantation) and death due to kidney disease in IgAN patients with chronic rena lesions
composite endpoint: eGFR decline > 40%, ESKD and death due to kidney disease in IgAN patients with chronic renal lesions [12th month]
composite endpoint: eGFR decline > 40%, ESKD (defined as long-term eGFR < 15 ml/min/1.73m2 for more than 3 months or need of maintenance dialysis or kidney transplantation) and death due to kidney disease in IgAN patients with chronic rena lesions
composite endpoint: eGFR decline > 40%, ESKD and death due to kidney disease. in IgAN patients with chronic renal lesions [18th month]
composite endpoint: eGFR decline > 40%, ESKD (defined as long-term eGFR < 15 ml/min/1.73m2 for more than 3 months or need of maintenance dialysis or kidney transplantation) and death due to kidney disease in IgAN patients with chronic renal lesions
composite endpoint: eGFR decline > 40%, ESKD and death due to kidney disease. in IgAN patients with chronic renal lesions [24th month]
composite endpoint: eGFR decline > 40%, ESKD (defined as long-term eGFR < 15 ml/min/1.73m2 for more than 3 months or need of maintenance dialysis or kidney transplantation) and death due to kidney disease in IgAN patients with chronic renal lesions
composite endpoint: eGFR decline > 40%, ESKD and death due to kidney disease. in IgAN patients with chronic renal lesions [30th month]
composite endpoint: eGFR decline > 40%, ESKD (defined as long-term eGFR < 15 ml/min/1.73m2 for more than 3 months or need of maintenance dialysis or kidney transplantation) and death due to kidney disease in IgAN patients with chronic renal lesions
composite endpoint: eGFR decline > 40%, ESKD and death due to kidney disease. in IgAN patients with chronic renal lesions [36th month]
composite endpoint: eGFR decline > 40%, ESKD (defined as long-term eGFR < 15 ml/min/1.73m2 for more than 3 months or need of maintenance dialysis or kidney transplantation) and death due to kidney disease in IgAN patients with chronic renal lesions
proteinuria reduction (geometric mean of 30% within 6 months) [6th month]
proteinuria reduction in IgAN patients with chronic renal lesions
proteinuria reduction (geometric mean of 30% within 6 months) [12th month]
proteinuria reduction in IgAN patients with chronic renal lesions
proteinuria reduction (geometric mean of 30% within 6 months) [18th month]
proteinuria reduction in IgAN patients with chronic renal lesions
proteinuria reduction (geometric mean of 30% within 6 months) [24th month]
proteinuria reduction in IgAN patients with chronic renal lesions
proteinuria reduction (geometric mean of 30% within 6 months) [30th month]
proteinuria reduction in IgAN patients with chronic renal lesions
proteinuria reduction (geometric mean of 30% within 6 months) [36th month]
proteinuria reduction in IgAN patients with chronic renal lesions
time-averaged proteinuria (TA-P) calculated as the weighted mean of all post-randomization measurement, with weights representing the time elapsed since the previous measurement in IgAN patients with active renal lesions [3rd month]
time-averaged proteinuria (TA-P) calculated as the weighted mean of all post-randomization measurement, with weights representing the time elapsed since the previous measurement
time-averaged proteinuria (TA-P) calculated as the weighted mean of all post-randomization measurement, with weights representing the time elapsed since the previous measurement in IgAN patients with active renal lesions [6th month]
time-averaged proteinuria (TA-P) calculated as the weighted mean of all post-randomization measurement, with weights representing the time elapsed since the previous measurement
time-averaged proteinuria (TA-P) calculated as the weighted mean of all post-randomization measurement, with weights representing the time elapsed since the previous measurement in IgAN patients with active renal lesions [9th month]
time-averaged proteinuria (TA-P) calculated as the weighted mean of all post-randomization measurement, with weights representing the time elapsed since the previous measurement
time-averaged proteinuria (TA-P) calculated as the weighted mean of all post-randomization measurement, with weights representing the time elapsed since the previous measurement in IgAN patients with active renal lesions [12th month]
time-averaged proteinuria (TA-P) calculated as the weighted mean of all post-randomization measurement, with weights representing the time elapsed since the previous measurement
time-averaged proteinuria (TA-P) calculated as the weighted mean of all post-randomization measurement, with weights representing the time elapsed since the previous measurement in IgAN patients with active renal lesions [18th month]
time-averaged proteinuria (TA-P) calculated as the weighted mean of all post-randomization measurement, with weights representing the time elapsed since the previous measurement
time-averaged proteinuria (TA-P) calculated as the weighted mean of all post-randomization measurement, with weights representing the time elapsed since the previous measurement in IgAN patients with active renal lesions [24th month]
time-averaged proteinuria (TA-P) calculated as the weighted mean of all post-randomization measurement, with weights representing the time elapsed since the previous measurement
time-averaged proteinuria (TA-P) calculated as the weighted mean of all post-randomization measurement, with weights representing the time elapsed since the previous measurement in IgAN patients with active renal lesions [30th month]
time-averaged proteinuria (TA-P) calculated as the weighted mean of all post-randomization measurement, with weights representing the time elapsed since the previous measurement
time-averaged proteinuria (TA-P) calculated as the weighted mean of all post-randomization measurement, with weights representing the time elapsed since the previous measurement in IgAN patients with active renal lesions [36th month]
time-averaged proteinuria (TA-P) calculated as the weighted mean of all post-randomization measurement, with weights representing the time elapsed since the previous measurement
time-averaged proteinuria (TA-P) calculated as the weighted mean of all post-randomization measurement, with weights representing the time elapsed since the previous measurement in IgAN patients with chronic renal lesions [6th month]
time-averaged proteinuria (TA-P) calculated as the weighted mean of all post-randomization measurement, with weights representing the time elapsed since the previous measurement
time-averaged proteinuria (TA-P) calculated as the weighted mean of all post-randomization measurement, with weights representing the time elapsed since the previous measurement in IgAN patients with chronic renal lesions [12th month]
time-averaged proteinuria (TA-P) calculated as the weighted mean of all post-randomization measurement, with weights representing the time elapsed since the previous measurement
time-averaged proteinuria (TA-P) calculated as the weighted mean of all post-randomization measurement, with weights representing the time elapsed since the previous measurement in IgAN patients with chronic renal lesions [18th month]
time-averaged proteinuria (TA-P) calculated as the weighted mean of all post-randomization measurement, with weights representing the time elapsed since the previous measurement
time-averaged proteinuria (TA-P) calculated as the weighted mean of all post-randomization measurement, with weights representing the time elapsed since the previous measurement in IgAN patients with chronic renal lesions [24th month]
time-averaged proteinuria (TA-P) calculated as the weighted mean of all post-randomization measurement, with weights representing the time elapsed since the previous measurement
time-averaged proteinuria (TA-P) calculated as the weighted mean of all post-randomization measurement, with weights representing the time elapsed since the previous measurement in IgAN patients with chronic renal lesions [30th month]
time-averaged proteinuria (TA-P) calculated as the weighted mean of all post-randomization measurement, with weights representing the time elapsed since the previous measurement
time-averaged proteinuria (TA-P) calculated as the weighted mean of all post-randomization measurement, with weights representing the time elapsed since the previous measurement in IgAN patients with chronic renal lesions [36 th month]
time-averaged proteinuria (TA-P) calculated as the weighted mean of all post-randomization measurement, with weights representing the time elapsed since the previous measurement

Eligibility Criteria

Criteria

Ages Eligible for Study:

18 Years and Older

Sexes Eligible for Study:

All

Accepts Healthy Volunteers:

Inclusion Criteria:

Only adult patients (age 18-70 years) with biopsy-proven idiopathic IgAN.
IgAN patients with active or chronic or moderate renal lesions

Exclusion Criteria

Patients with idiopathic IgAN and nephrotic syndrome (minimal change disease at kidney biopsy)
IgAN patients with hematuria and acute renal failure
IgAN patients with rapidly progressive glomerulonephritis (extracapillary lesions in more than 50% of glomeruli)
Patients with secondary IgAN (lupus nephritis, Schoenlein-Henoch purpura, liver cirrhosis)
Any prior immunosuppressive therapy
Superimposed IgAN in kidney transplant
Severe liver diseases
Infections
Malignancies
Pregnancy
Patients with myocardial infarction or cerebrovascular stroke in the previous 6 months
Uncontrolled diabetes
Aseptic necrosis of any bone
Other conditions that can be exacerbated by corticosteroids
Previous adverse side effects to RASBs
Previous adverse side effects to SGLT2is
Patients with mild renal lesions (M0,E0,S0,T0,C0), minor urinary findings, proteinuria < 0.5 g/day, normal GFR and normal blood pressure