The goal of this clinical trial is to evaluate the safety and efficacy of human umbilical cord mesenchymal stem cells (hUC-MSC) in the treatment of Alport syndrome (AS) in a randomized, single-blind, placebo-controlled trial, to provide a clinical basis for the development of stem cell products for the treatment of AS, and to further clarify the therapeutic effect of hUC-MSC in the treatment of AS.
3 years old ≤Age ≤ 12 years old;
Meet the diagnostic criteria of Alport syndrome;
Positive proteinuria or combined hematuria;
Chronic kidney disease (CKD) stage: I-III stage children, that is, glomerular filtration rate greater than 60 ml/min.1.73m2;
Age <3 years or >12 years old;
Alport syndrome patients with only microscopic hematuria and normal glomerular filtration rate;
Patients with significantly reduced renal function, chronic kidney disease stage IV or V, Alport syndrome;
Patients with other renal diseases;
Parallel
hUC-MSC
Biological/VaccineThis group of patients received a total of 2 peripheral intravenous Human umbilical cord mesenchymal stem cells (hUC-MSC) infusions during the treatment period on the basis of conventional symptomatic and supportive treatment. The interval between the two infusions was 14 days, and the single infusion dose was approximately 2×1000,000 cells/Kg. Conventional clinical treatment refers to symptomatic treatment with ACEI and ARB drugs.
Placebo control drug
DrugThis group of patients received a total of 2 intravenous infusions of normal saline (the same volume, specifications and batches used in the experimental group) as a placebo control during the treatment period on the basis of conventional symptomatic and supportive treatment. The interval between the two infusions was 14 days. Conventional clinical treatment refers to symptomatic treatment with ACEI and ARB drugs.
Urine protein remission rate
Follow-up was performed at 2 weeks, 4 weeks, 6 weeks, 8 weeks, 3 months, 4 months, 5 months, 6 months, 8 months, 10 months, and 12 months after the last hUC-MSC infusion. Urinalysis, 24-hour urine protein quantification, and urine protein/creatinine ratio were tested to evaluate the remission of urine protein after treatment.
Hematuria remission rate
Follow-up was performed at 2 weeks, 4 weeks, 6 weeks, 8 weeks, 3 months, 4 months, 5 months, 6 months, 8 months, 10 months, and 12 months after the last hUC-MSC infusion. The urine abnormal red blood cell count of the children was tested to evaluate the remission of hematuria after treatment.
Renal function improvement rate
Follow-up was performed at 2 weeks, 4 weeks, 6 weeks, 8 weeks, 3 months, 4 months, 5 months, 6 months, 8 months, 10 months, and 12 months after the last hUCMSC infusion to measure the serum creatinine, blood urea nitrogen, serum cystatin C, glomerular filtration rate and other indicators of the children to evaluate the improvement of renal function after treatment.
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