Health Canada authorizes Gazyva® (obinutuzumab) for adults with active lupus nephritis
The approval introduces the first and only anti-CD20 monoclonal antibody shown to improve complete renal response in lupus nephritis, offering a new treatment option for patients and potentially delaying or preventing end-stage kidney disease. 1,2,3
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In Canada, lupus affects approximately 1 in 1,000 people.4 Among those with lupus, nearly 40% develop lupus nephritis, a kidney-specific form of systemic lupus erythematosus (SLE)5. SLE is a broader autoimmune disease that can affect various organs, such as the skin, joints, and blood system. Lupus nephritis occurs when the immune system mistakenly attacks the kidneys, potentially leading to impaired kidney function or even kidney failure.
"Lupus nephritis is one of the most frequent, severe, and debilitating complications of systemic lupus erythematosus, and treatment options are unfortunately limited," said Dr.
"Lupus nephritis is a complex and unpredictable disease that places a significant burden on patients and families," said
About Lupus Nephritis
Lupus nephritis is a potentially life-threatening manifestation of systemic lupus erythematosus, an autoimmune disease that commonly affects the kidneys.6 Lupus nephritis is characterised by an irreversible loss of nephrons, the filtering structures of the kidneys. Periods of intense disease activity, known as flares, can speed up the loss of nephrons and, if left unchecked, may lead to a progressive loss of kidney function. Even with the latest treatments, up to a third of people will progress to end-stage kidney disease, where dialysis or transplant are the only options and life expectancy and quality of life are substantially reduced.7
Lupus nephritis affects more than 1.7 million people worldwide – predominantly women, mostly of colour and usually of childbearing age.8 Currently, there is no cure.6
About Gazyva
Gazyva (obinutuzumab) is a Type II engineered humanised monoclonal antibody designed to attach to CD20, a protein found on certain types of B cells.9 In lupus nephritis, disease-causing B cells drive persistent inflammation that damages the kidneys and reduces their ability to function properly.10 Data suggests that Gazyva depletes disease-causing B cells, helping to limit further damage to the kidneys and potentially preventing or delaying progression to end-stage kidney disease.2
Gazyva is approved for adults with lupus nephritis in
About the REGENCY Study
REGENCY [NCT04221477] is a phase III, randomised, double-blind, placebo-controlled, multicentre study investigating the efficacy and safety of Gazyva (obinutuzumab) plus standard therapy (mycophenolate mofetil and glucocorticoids) in people with active/chronic
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References
1. Furie RA, et al. B-cell depletion with obinutuzumab for the treatment of proliferative lupus nephritis: a randomised, double-blind, placebo-controlled trial. Ann Rheum Dis. 2022 Jan;81(1):100-07.
2. Furie RA, et al. Efficacy and safety of obinutuzumab in active lupus nephritis. N Engl J Med. 2025 Feb;392:1471-83.
3. Gazyva Product Monograph,
4. Lupus Canada; [cited 2026
5. Hanly JG,et al. The frequency and outcome of lupus nephritis: results from an international inception cohort study. Rheumatology (Oxford). 2016 Feb;55(2):252-62.
6. Hocaoglu M et al. Incidence, prevalence, and mortality of lupus nephritis: a population-based study over four decades using the Lupus Midwest Network. Arthritis & Rheumatol 2023 Apr;75(4):567-573.
7. Mok C, et al. Treatment of lupus nephritis: consensus evidence and perspectives. Nat Rev Rheumatol. 2023 Apr;19(4):227-38.
8. Anders HJ et al. Lupus nephritis. Nat Rev Dis Primers. 2020 Jan 23;6(1):7.
9. Herter S, et al. Preclinical activity of the type II CD20 antibody GA101 (obinutuzumab) compared with rituximab and ofatumumab in vitro and in xenograft models. Mol Cancer Ther. 2013 Oct;12(10):2031-42.
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