ClinicalTrials.gg
Not yet recruitingNCT07721363OBLUMENUpdated Jul 23, 2026

Obinutuzumab for Systemic Lupus Erythematosus Pure Membranous Nephropathy: a Phase II Trial

A Phase 2 interventional study of Obinutuzumab in Lupus Nephritis and Membranous Nephropathy, sponsored by Assistance Publique - Hôpitaux de Paris. Not yet recruiting at 1 site in France. Open to participants aged 18 Years to 75 Years. Per ClinicalTrials.gov, last updated 2026-07-23.

Sponsored by Assistance Publique - Hôpitaux de Paris · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
65
Allocation
Not applicable
Ages
18 Years to 75 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 33 studies in Lupus Nephritis with a site in France — 9 open to participants now, 14 under way, 5 of them phase 3. Lupus Nephritis · France.

Planned enrollment
25th of 30
65 · median 124
Started
2026
with 1 other
Phase 2
13 of 33
2 open now
Primary completion
2029-09
later than 9 of 13 live
Registered
32nd of 33
by date
Lead sponsor
3 of 33
Assistance Publique - Hôpitaux de Paris

Among the 33 studies in Lupus Nephritis with a site in France, this one is the 25th largest by planned enrollment of the 30 interventional ones that give a count, is one of 2 that started in 2026, is one of 13 in phase 2, reaches primary completion later than 9 of the 13 other live ones, and was the 32nd registered.

Lupus Nephritis

340 studies on the registry are indexed under Lupus Nephritis; 135 are open to participants now.

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Open to participants now

9 of the 33 studies in Lupus Nephritis with a site in France are open now. Recruiting first, the newest first:

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All 9 open studies →

A study can be open while its sites in France have not opened yet or have stopped. Only those recruiting at a site in France →

Who these studies take

Of the 88 Lupus Nephritis studies recruiting now, 30 (34%) set no upper age limit and 51 (58%) stop at 75 or younger; 29 take children under 18; 7 take healthy volunteers.

This study: 18 Years to 75 Years · all sexes · no healthy volunteers.

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02

Study summary

Lupus nephritis (LN) is a frequent and severe complication of systemic lupus erythematosus, with important mortality and morbidity. International 2024 guidelines recommend immunosuppressive therapy (MMF, cyclophosphamide, calcineurin inhibitors, rituximab, azathioprine) in patients with heavy or uncontrolled proteinuria, but none of these therapies has been evaluated in robust multicenter prospective. Therefore, no treatment has regulatory approval for pure class V LN.

Obinutuzumab, a 2nd-generation B-cell targeting therapy, is more efficient than rituximab in inducing B-cell depletion and complete renal response in patient with class III or IV lupus nephritis.

This study aims to assess the efficacy and safety of an obinutuzumab monotherapy in patients with pure class V LN. The primary endpoint is complete renal response at week 52 according to 2024 KDIGO criteria (UPCR \< 0.5 g/g, eGFR ≥ 85% of baseline, and no intercurrent event: treatment failure, rescue therapy, long-term dialysis, renal transplantation, death or early trial withdrawal)

Read the detailed description

Lupus nephritis (LN) is a frequent manifestation of systemic lupus erythematosus and conveys important risk of morbidity and mortality in affected patients. Pure class V LN, also referred to as lupus membranous nephropathy, remains difficult to manage despite available therapy. Current immunosuppressive options proposed in the 2024 international recommendations include mycophenolate mofetil, cyclophosphamide, calcineurin inhibitors, rituximab or azathioprine in situations of uncontrolled or nephrotic proteinuria. However, none of these drugs has been validated through prospective multicenter protocol-based trials specifically dedicated to assess their efficacy and safety in pure class V LN. Therefore no therapy holds specific approval for this condition.

Observational data from multiple French centers highlight the heterogeneous therapeutic choices and variable response rates obtained with treatments. Although efficacy appears broadly similar across these strategies, concerns persist regarding infertility, teratogenicity, myelotoxicity and corticosteroid exposure, reinforcing the need for alternatives with improved tolerance. Rituximab is increasingly used to treat pure lupus membranous nephropathy but is less efficient than obinutuzumab in inducing complete renal response in class III or IV lupus nephritis.

Obinutuzumab is a second-generation therapy targeting B cells, developed to enhance activity compared with rituximab. Clinical studies conducted in follicular lymphoma and chronic lymphocytic leukemia demonstrated superior outcomes and supported its approval. In LN, evaluations combining obinutuzumab with standard-of-care therapy in proliferative classes (NOBILITY and REGENCY trials) reported higher complete renal response than placebo with acceptable safety, although events such as infections, serious adverse events, neutropenia and infusion-related reactions were documented. In contrast, a study using rituximab with standard-of-care therapy (LUNAR) did not show improvement in complete renal response.

Based on these findings, this phase 2 study evaluates obinutuzumab monotherapy in adults with pure class V LN. The main endpoint is complete renal response at week 52 after first infusion, defined by urinary protein creatinine ratio \< 0.5 g/g on 24-hour urine collection, eGFR ≥ 85% of baseline, and absence of intercurrent events including treatment failure, need for rescue therapy, high-dose corticosteroids, long-term dialysis, renal transplantation, death or premature withdrawal.

Secondary objectives include: assessment of safety by recording adverse events, serious adverse events and events of interest (neutropenia, infection, infusion-related events, new cancer) from first infusion to week 52; evaluation of renal outcomes documenting no kidney response, partial renal response, complete renal response and renal relapses free of intercurrent event; monitoring of systemic lupus erythematosus activity based on immunologic remission defined by C3 and C4 normalization and anti-dsDNA negativation, as well as renal and extrarenal flares; estimation of participants without corticosteroids at week 52; and evaluation of quality of life at week 52.

The trial uses a single-arm, open, non-comparative A'Hern phase II design (Category 2, Phase 2). This protocol aims to generate prospective data on the activity and safety of obinutuzumab monotherapy in pure class V LN, with precise definitions of renal response, systematic follow-up of adverse events and detailed assessment of systemic and renal outcomes over a 52-week period.

03

Conditions studied

  • Lupus Nephritis
  • Membranous Nephropathy

Keywords

  • Class V lupus nephritis
  • Pure lupus membranous nephropathy
  • Systemic lupus erythematosus
  • Membranous nephropathy
  • Obinutuzumab
  • B-cell targeted therapy
04

Who can participate

Ages eligible
18 Years to 75 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Diagnosis of SLE fulfilling the 2019 EULAR/ACR classification criteria (score > 10)
  2. Age from 18 to 75 years old included
  3. Pure class V lupus nephritis, defined on a renal sample following the ISN/RPS 2003 criteria AND

    • Nephrotic range proteinuria (UPCr or UACr > 3 g/g) at screening visit OR
    • Uncontrolled proteinuria after at least 3 months of well-conducted anti-proteinuric therapy [UPCR> 1 g/g despite maximal or maximally tolerated dose of ACEi or ARB + SGLT2i therapy +/- diuretic therapy] and up to 12 months after pure class V lupus nephritis diagnosis.
  4. For women of childbearing age, agreement to remain abstinent (refrain from heterosexual intercourse) or willingness to use appropriate and effective , as recommended when using obinutuzumab (18 months after last infusion)
  5. Signature of
  6. French social security affiliation (beneficiary or legal)
  7. Time interval between kidney biopsy showing pure class V LN and baseline visit of no more than 12 months

Exclusion criteria

Exclusion Criteria:

  1. Ongoing treatment (induction or maintenance) for proliferative LN (class III-A or IV-A)
  2. Negativity for anti-nuclear antibodies (\< 1/80) on immunofluorescence assay
  3. Severe extra-renal (i.e but not limited to : cardiac, central nervous system, pulmonary, enteric) lupus flare requiring high dose (> 1 mg/kg/day) .
  4. Receipt of any of the following excluded therapies:

    • Any anti-CD20 therapy such as rituximab, ocrelizumab, or ofatumumab less than 6 months prior to screening or during screening. If an anti-CD20 therapy has been received between 6 and 12 months prior to screening, the peripheral CD19+ B-cell count by flow cytometry must be > 25 cells/µL
    • Cyclophosphamide, tacrolimus, ciclosporin, mycophenolate mofetil, pulse methylprednisolone or voclosporin during the 2 months prior to screening or during screening. Patients maintained on low-dose corticosteroids (\<10 mg/day prednisone equivalent) for a prolonged period as part of the management of a previous and resolved flare are eligible for trial participation.
    • Any biologic therapy (other than anti-CD20) such as, but not limited to, belimumab, ustekinumab, anifrolumab, secukinumab, or atacicept during the 2 months prior to screening or during screening
    • Oral inhibitors of Janus-associated kinase (JAK), Bruton's tyrosine kinase (BTK), or tyrosine kinase 2 (TYK2), including baricitinib, tofacitinib, upadacitinib, filgotinib, ibrutinib, or fenebrutinib or any agent during the 2 months prior to screening or during screening
    • Any during the 28 days prior to screening or during screening
  5. to the use of obinutuzumab, its premedication drugs or to its .
  6. Fewer than 10 non-sclerosed glomeruli analyzable on renal
  7. Ongoing pregnancy or breastfeeding women
  8. CKD stage 4 or 5, defined as \<30 ml/min/1.73m2 according to CKD-EPI creatinine equation measured two times in an interval of 3 months (to be dissociated from acute kidney injury).
  9. Obsolescence of more than 60% of glomeruli or tubulo-interstitial scarring of more than 60% on kidney biopsy.
  10. Patients already included in an interventional study (RIPH1, clinical investigation or clinical trial)
  11. Patient under legal protection measure (tutorship or curatorship) and patient deprived of freedom
  12. Patients with a previously documented kidney disease causing proteinuria (> 3 g/g or > 3 g/day) more than 1 year prior to the diagnosis of pure class V LN.
  13. Exclusion of primary membranous nephropathy, defined by positive anti-PLA2R antibodies on serum and/or glomerular PLA2R staining on kidney biopsy
Terms in these criteria, in plain language(10)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Biopsy and archival tissue

A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.

Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

Live vaccines

Vaccines made with a weakened form of the germ, such as measles–mumps–rubella (MMR), chickenpox and yellow fever. They can be risky when the immune system is weakened. Flu injections are not live; the nasal flu spray is.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Excipients

The other ingredients in a medicine besides the active drug, such as fillers, colours or preservatives.

GFR and eGFR (kidney filtering)

GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².

Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
65 participants (estimated)

Study arms

  • Experimental
    pure class V lupus nephritis in adult patients

    Drug: Obinutuzumab

Interventions

  • Obinutuzumab, 1000 mg, solution for dilution for infusion, 2 infusions spaced 15 days apart (day 1, day 15) +/- two additional 1000 mg infusions at week 24 and week 26 in patients with no kidney response at week 24, slow intravenous infusion, maximum 4 injections in 7 months

    Also known as: GAZYVARO

06

What researchers measure

Primary outcomes

  1. To assess, in patients with pure class V lupus nephritis, the efficacy of obinutuzumab to reach complete renal response as defined by 2024 international KDIGO guidelines, 52 weeks after the first obinutuzumab infusion.

    The primary endpoint is therapeutic success at Week 52 (W52) after the first obinutuzumab infusion, defined as: Complete Renal Response (CRR) of pure class V LN, as defined by the international KDIGO 2024 guidelines, as follows: * Urine Protein-to-Creatinine Ratio (UPCR) \< 0.5 g/g measured from a 24-hour urine collection AND * An eGFR ≥ 85% of the baseline value (assessed using the 2021 CKD-EPI creatinine equation), with baseline defined as the last non-missing value prior to receipt of the first obinutuzumab infusion. AND o No intercurrent event, including: * Use of rescue therapy (i.e., another immunosuppressive agent used to achieve remission, including: mycophenolate mofetil, cyclophosphamide, tacrolimus, cyclosporine, or azathioprine) or high-dose corticosteroids (\> 1 mg/kg/day of prednisone equivalent) OR * Occurrence of end-stage renal disease (CKD-EPI 2021 eGFR \< 15 mL/min/1.73 m², long-term dialysis, or pre-emptive kidney transplantation) OR * Death from any cause

    Time frame: week 52 (week 48 to week 56) after the first infusion of obinutuzumab.

Secondary outcomes

  1. To assess the safety of obinutuzumab in patients with pure class V lupus nephritis by quantifying adverse events, serious adverse events, and adverse events of special interest between the first obinutuzumab infusion and W52

    collection, analysis and quantification of adverse events according to the CTCAE v5.0

    Time frame: first obinutuzumab infusion to week 52 (week 48 to week 56)

  2. To assess the overall efficacy of obinutuzumab on pure class V lupus nephritis by quantifying the proportion of patient with no-kidney response, partial response (PRR), complete response (CRR) and renal relapses without any intercurrent event

    * Proportion of patients with complete renal response (urinary protein creatinine ratio \< 0.5 g/g on 24-hour urine collection, eGFR ≥ 85% of baseline, and absence of intercurrent events * Proportion of patients with partial renal response (decrease of UPCR \> 50% and an UPCR of \< 3 g/g measured from a 24-h urine collection * Proportion of patient with no kidney response (reaching none of the above response) * Renal relapses definition * After reaching PRR or CRR * Increase of urine protein/creatinine ratio (UPCR) \> 50% and increase of \> 1 g/g measured from a 24-h urine collection * On two consecutive urine samples spaced by an interval of at least 1 month * Identified at any time 3 months after the first obinutuzumab infusion onward and before primary endpoint assessment

    Time frame: first obinutuzumab infusion to week 52 (week 48 to week 56)

  3. To assess the efficacy of obinutuzumab on overall SLE activity by quantifying the proportion of patients reaching immunologic remission (normalization C3 and C4 levels and negativation of anti-dsDNA) and the number of renal and extrarenal flares during f

    Proportion of patients with negativation of anti-dsDNA and normalization of complement C3 and C4 according to local laboratory limits. o Unit: Percentage of participants (%)

    Time frame: First obinutuzumab infusion to week 52 (week 48 to week 56)

  4. To assess the efficacy of obinutuzumab on overall SLE activity by quantifying the proportion of patients reaching immunologic remission (normalization C3 and C4 levels and negativation of anti-dsDNA) and the number of renal and extrarenal flares during f

    Disease activity assessed using the Safety of Estrogens in Lupus National Assessment-Systemic Lupus Erythematosus Disease Activity Index (SELENA-SLEDAI) * Unit: Score * Range: 0 to 105 * Interpretation: Higher scores indicate worse disease activity

    Time frame: first obinutuzumab infusion to week 52 (week 48 to week 56)

  5. To assess the efficacy of obinutuzumab on overall SLE activity by quantifying the proportion of patients reaching immunologic remission (normalization C3 and C4 levels and negativation of anti-dsDNA) and the number of renal and extrarenal flares during f

    Assessed using the SELENA Flare Index (SFI) o Unit: Number of flares / categorical severity

    Time frame: first obinutuzumab infusion to week 52 (week 48 to week 56)

  6. To assess the efficacy of obinutuzumab on overall SLE activity by quantifying the proportion of patients reaching immunologic remission (normalization C3 and C4 levels and negativation of anti-dsDNA) and the number of renal and extrarenal flares

    Total cumulative number of SLE flares at Week 52 o Unit: Number of flares

    Time frame: first obinutuzumab infusion to week 52 (week 48 to week 56)

  7. To assess the proportion of patients that are free from corticosteroids at W52 with respect to corticosteroids indication (to treat lupus or another disease).

    proportion of patient without any steroid prescription to treat SLE at week 52.

    Time frame: week 52 (week 48 to week 56) after the first infusion of obinutuzumab.

  8. To assess the quality of life of patients at W52

    Health-related quality of life assessed using the EQ-5D-5L descriptive system. Utility index calculated using the French value set (Andrade et al., 2020). Range: -0.530 to 1.000; higher scores indicate better health-related quality of life. Unit: utility index score

    Time frame: first obinutuzumab infusion to week 52 (week 48 to week 56)

  9. To assess the quality of life of patients at W52

    Self-rated overall health status assessed using the EQ-5D-5L Visual Analogue Scale. Range: 0 to 100; higher scores indicate better self-rated health. Unit: score on a scale (0-100)

    Time frame: first obinutuzumab infusion to week 52 (week 48 to week 56)

  10. To assess the quality of life of patients at W52

    Quality of life assessed using the Lupus Quality of Life (LupusQoL) questionnaire (French version). * Unit of Measure : Score * Range: 0 to 100 * Interpretation: Higher scores indicate better quality of life

    Time frame: first obinutuzumab infusion to week 52 (week 48 to week 56)

07

Study locations

1 site
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Start is estimated for Sep 2026; primary completion for Sep 2029, 36 months later.

Of 33 phase 2 interventional studies under Lupus Nephritis, half reached primary completion within 40 months of starting (the median), counting those still running; a quarter within 28 and three quarters within 57. This study's planned 36 months is close to that.

How these figures are worked out, and which studies are left out of them.

Registered
Mar 10, 2026
First posted
Jul 23, 2026
StartEst.
Sep 2, 2026
Primary completionEst.
Sep 2, 2029
CompletionEst.
Sep 2, 2029
Last update
Jul 23, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jul 23, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07721363
Collaborators
Roche-Genentech
Responsible party
Sponsor
First posted
Jul 23, 2026
Start date
Sep 2, 2026 (estimated)
Primary completion
Sep 2, 2029 (estimated)
Completion
Sep 2, 2029 (estimated)
Last update
Jul 23, 2026

Study contacts

Romain Brousse, Dr
Contact
romain.brousse@aphp.fr
+33 1 56 01 70 43
Jean-Jacques BOFFA, Pr
Contact
jean-jacques.boffa@aphp.fr
+33 1 56 01 69 99
Romain Brousse, Dr
principal investigator · Assistance Publique - Hôpitaux de Paris

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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Studies of the drug tested here: Obinutuzumab

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