Stem Cell Therapy for Patients With Focal Segmental Glomerulosclerosis

Chronic Kidney Diseases Clinical Trial

— STEFOG  

Official title:

Safety Study of the Endovascular Infusion of Bone Marrow Derived Mononuclear Cells in Patients With Focal Segmental Glomerulosclerosis

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT02693366
• Other study ID #: CAAE:01498412.5.0000.5257
• Status: Completed
• Phase: Phase 1
• Start date: June 25, 2015
• Est. completion date: May 16, 2018

Study information

• Verified date: January 2020
• Source: Universidade Federal do Rio de Janeiro
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The purpose of this study is to analyze the safety, renal function, metabolic disorders and quality of life data in patients with focal segmental glomerulosclerosis treated with endovascular infusion of bone marrow derived mononuclear cells.

Description:

Will be studied five patients with progressive chronic kidney disease and estimated clearance between 40 and 20 ml / min. Patients will be followed by clinical and laboratory examination for 3 months prior to the procedure. These previous results serve as a control for comparison with a second time when the same patients receive treatment with stem cells being subsequently followed up for 9 months a total of one year of clinical follow-up.

Bone marrow aspiration and subsequent cell preparation were accomplished on the same day as the endovascular infusion of autologous Bone Marrow derived Mononuclear stem cells (BMDMCs) in both renal arteries. Collection was performed under spinal anesthesia and light sedation, through puncture and repeated aspirations at the posterior iliac crest region. A total of 80 mL of bone marrow aspirate was collected from each patient, and after removal of bone and fatty residues, mononuclear cells were isolated by a Ficoll-Paque Plus (Amersham Biosciences, São Paulo, Brazil).For each patient, 2×107 cells will be labeled with 99mTc. Briefly, 500 μl of sterile SnCl2 solution is added to the cells and the mixture is incubated at room temperature for 10 min. Forty-five millicurie (mCi) of 99mTc is then added and incubation continued for another 10 min. After centrifugation (500×g for 5 min), the supernatant is removed and the cells are washed in saline solution. The pellet will be also resuspended in saline solution. Viability of the labeled cells will be assessed by the trypan blue exclusion test, and estimated to be greater than 93% in all cases.The labeling efficiency (%) will be calculated by the activity in the pellet divided by the sum of the radioactivity in the pellet plus supernatant and estimated to be greater than 90% in all cases.

After the collection of the stem cells, the patient will be submitted to puncture the femoral artery using the Seldinger technique under local anesthesia, followed by catheterization of the ostium of the renal arteries with minimum use of nonionic iodinated contrast. With the routing of diagnostic catheter or guide, the solution numbering about 30 to 100 million of dissolved plasma cells will be divided and injected into two renal arteries. The infusion volume is about 5 ml in each kidney. Whole body and planar scans will be performed 2 and 24h after infusion to determine the migration and cell viability. The patient will remain hospitalized for more 48 hours for clinical monitoring and collection of laboratorial tests.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 5
• Est. completion date: May 16, 2018
• Est. primary completion date: February 2018
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years to 60 Years

Eligibility

Inclusion Criteria:

• Patients with diagnosis of primary focal segmental glomerulosclerosis after having been previously treated with corticosteroids and immunosuppressive drugs and have not reached satisfactory answer. Will also be considered candidates those patients who performed late diagnosis and therefore no more clinical indication to perform therapy with corticosteroids and immunosuppressants. In both cases, showing irreversible loss of renal function with filtration rate between 40 - 20 ml/min.

• Patient should use the classical nephroprotective medication: angiotensin-converting enzyme inhibitor or angiotensin-receptor blocker, or both.

Exclusion Criteria:

• Acute urinary tract infection;

• Urinary infection with tuberculosis bacillus or fungi;

• Patients with poorly anatomical formations of the urinary tract, polycystic kidney disease and other congenital or acquired kidney diseases.

• Blood pressure greater than 160 mm Hg systolic and 100 mmHg diastolic, in measurements taken during the last 3 outpatient visits;

• Who has performed examination with iodinated contrast the last 3 months

• Use of potentially nephrotoxic drugs;

• Use of corticosteroid therapy in immunosuppressive doses or more than 0.3 mg/kg/day

• Inability to obtain vascular access for endovascular procedure

• Sepsis (defined according to the Society of Critical Care Medicine, American College of Chest Physicians, 1992);

• Malignancies

• Autoimmune disorders,

• Neurodegenerative diseases;

• Acute heart failure or decompensated;

• Primary hematologic diseases;

• Osteopathies reflecting increased risk for spinal puncture;

• Coagulopathies;

• Liver failure;

• History of stroke or myocardial infarction in the last 6 months;

• Pregnancy or breastfeeding;

• History and serology of chronic infectious diseases, including HIV, Hepatitis C virus, Hepatitis B virus

• Participation in another clinical trial last year

• Cognitive impairment to understand all procedures

• Prolonged travel plans or domicile changes to other states that generate unable to attend the follow-up visits;

• Any other clinically significant active disease in the opinion of the principal investigator

Related Conditions & MeSH terms

• Chronic Kidney Diseases
• Focal Segmental Glomerulosclerosis
• Glomerulosclerosis, Focal Segmental
• Kidney Diseases
• Renal Insufficiency, Chronic

Intervention

Other:
• Bone marrow stem cell
Endovascular infusion of bone marrow derived cells in both renal arteries.

Locations

Country	Name	City	State
Brazil	Universitary Hospital Clementino Fraga Filho - UFRJ	Rio de Janeiro

Sponsors (5)

Lead Sponsor	Collaborator
Universidade Federal do Rio de Janeiro	Ministry of Health, Brazil, Ministry of Science and Technology, Brazil, National Research Council, Brazil, Rio de Janeiro State Research Supporting Foundation (FAPERJ)

Country where clinical trial is conducted

Brazil, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Kidney injury	Increase of serum creatinine of about 0.5 mg / dL when levels are less than 3.0 mg / dl and 1.0 mg / dl baseline levels when are greater than or equal to 3.0 mg / dL) when confirmed with the second examination.; Acute: evaluated within 15 days of cell therapy; Subacute: evaluated 15-90 days of cell therapy	9 months
Primary	Chronic kidney disease	Doubling of serum creatinine based on the third month after the cell therapy or the need to start dialysis	9 months
Primary	Potential differentiation disorders of transplanted cells	Analyzed by clinical and imaging tests such abdominal ultrasound and chest radiography	9 months
Primary	Systemic inflammatory potential of mononuclear cells administration in renal circulation	Laboratory tests: C-reactive protein, erythrocyte sedimentation rate, blood count and urinary sediment	9 months
Primary	Death		9 months
Secondary	Renal function	The estimated creatinine clearance assessment by MDRD formula	9 months
Secondary	Bone metabolism	Evaluation of bone metabolism by serum phosphorus (mg/dL), calcium (mg/dL), parathormone (pg/ml), 25 (OH) vit. D (ng/ml).	9 months
Secondary	Balance assessment electrolyte and acid-base	Balance assessment electrolyte and acid-base by serum sodium (mEq/l), potassium (mEq/l), uric acid (mg/dl) and bicarbonate	9 months
Secondary	The lipid profile assessment and anemia	The lipid profile assessment (LDL- cholesterol, HDL-cholesterol and triglyceride) and anemia measured by hemoglobin (g/dL) and hematocrit.	9 months
Secondary	Quality of life questionnaire	Clinical improvement of the patient, with subjective assessment of general health and well being through SF36 quality of life questionnaire	9 months
Secondary	Imaging tests	Imaging tests: Renal scintigraphy with 99mTc-DTPA and DMSA	9 months