Complement C5 mAb in the Treatment of Anti-GBM Disease

Peking University First Hospital16 enrolled

Overview

Anti-GBM disease is the most severe form of glomerulonephritis. Despite of the standard treatment including plasmapheresis and immunosuppressant, 70% of the patients still go into end-stage kidney disease. Complement has been shown to participate in the pathogenesis of anti-GBM disease. This study aims to the investigate the therapeutic effects and safety of C5 monoclonal antibody in the treatment of anti-GBM disease.

Anti-glomerular basement membrane (anti-GBM) disease is the most severe form of autoimmune glomerulonephritis, characterized by the production of autoantibodies targeting the components of basement membrane within the kidney and/or the lung.Patients with anti-GBM disease typically present rapidly progressive glomerulonephritis, and often accompanied by lung hemorrhage. The hallmark of the disease is the linear deposition of IgG along the GBM on kidney biopsy. Complement activation is a pivotal step for kidney injuries during the development of human anti-GBM disease. Our previous study showed that the The levels of plasma SC5b-9 and urinary C5a were positively correlated with the serum creatinine at presentation and the percentage of crescents in glomeruli. Eculizumab is a recombinant humanized monoclonal antibody that specifically binds to a C5 terminal complement and inhibits the cleavage of C5 to C5a and C5b through complement activation. There are a few case reports showing therapeutic effects in anti-GBM disease. This trial will aim to evaluate the efficacy and safety of Eculizumab plus standard treatment in anti-GBM disease.

Study Type

INTERVENTIONAL

Allocation

Purpose

TREATMENT

Masking

NONE

Enrollment

Conditions

Autoimmune Diseases

Interventions

EculizumabDRUG

eculizumab 900mg iv. per week for 4 weeks, then 1200mg every two weeks for 8 weeks

Eligibility

Sex: ALLMin age: 18 Years

Medical Language ↔ Plain English

Inclusion Criteria 1. Positive circulating anti-GBM antibody, with proteinuria or hematuria or any clinical signs of kidney injuries. 2. And or kidney biopsy showed typical IgG linear deposition along the GBM 3. At least 18 years old Exclusion Criteria 1. Allergic to eculizumab, mouse protein or the investigational drug and any of its excipients; 2. Uncontrolled meningococcal infection,or those who have not received meningitis prophylactic antibiotic treatment or meningitis vaccination; 3. Diagnosis of anti-GBM disease for more than 12 weeks before signing the informed consent form; 4. Pregnant or lactating 5. Received investigational drug within 30 days or 4 half-lives (whichever is longer) prior to screening; 6. Other serious poorly controlled comorbid diseases that affect the compliance of the trial protocol or the interpretation of results within 3 months prior to screening, including cardiovascular and cerebrovascular diseases, lung disease, etc.; 7. Presence of any medical history or disease that, in the opinion of the investigator, may expose the patient's participation in the study to an unacceptable risk;

Locations (1)

Peking University First Hospital

Beijing, China

Outcomes

Primary Outcomes

kidney prognosis

ESKD (dialysis dependent) or kidney translation

Time frame: 6 months after the first infusion of eculizumab

Secondary Outcomes

Changes in glomerular filtration rate (eGFR);

Change in level of estimated Glomerular Filtration Rate (eGFR) as measured by laboratory testing, reported in mL/min/1.73m².

Time frame: from baseline to study completion, an average of 1 year

Changes in serum creatinine

Change in concentration of serum creatinine as measured by laboratory testing, reported in µmol/L

Time frame: from baseline to study completion, an average of 1 year

Changes in blood urine nitrogen (BUN)

Change in concentration of Blood Urea Nitrogen (BUN) as measured by laboratory testing, reported in mmol/L

Time frame: from baseline to study completion, an average of 1 year

side effects of eculizumab

The number of participants experiencing any adverse events determined by the investigator to be related to eculizumab treatment.

Time frame: at 6 months

Data from ClinicalTrials.gov

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