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New hope for FSGS? obinutuzumab trial targets tough cases

NCT ID NCT04983888

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This phase 2 trial tested the drug obinutuzumab in 20 adults with a kidney disease called primary FSGS. The participants had not responded well to or could not take standard treatments like steroids. The goal was to see if obinutuzumab could reduce protein leakage in the urine, a sign of kidney damage. The drug was given as two IV infusions two weeks apart, with a repeat course at six months.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Obinutuzumab (a monoclonal antibody given by IV infusion)
What this could lead to
If it works, this could offer a new treatment option for people with FSGS who do not respond to or cannot take standard therapies, potentially reducing protein in the urine and protecting kidney function.
What could go wrong
This is a small, early-phase trial with only 20 participants, so results may not apply to everyone. Obinutuzumab can cause infusion reactions and increase infection risk, and it is not yet proven to be better than existing treatments.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 2

Tests whether the treatment actually works, and watches for side effects, in a larger group.

Participants

20 people

The number who actually took part.

Started

Nov 2021

Finished

Jun 2025

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * ≥ 18 years of age. * Biopsy proven Focal Segmental Glomerulosclerosis (FSGS) lesion * Foot process effacement ≥ 80% on electron microscopy. * Presence of nephrotic syndrome (proteinuria \> 3.5g/24hrs and serum albumin \< 3.5 g/dl) prior to initiation of immunosuppressive therapy. * Resistant or dependent on therapy, including corticosteroids or calcineurin inhibitors or who have failed rituximab. Patient who have contraindication to or refuse to take high dose corticosteroids are allowed. Exclusion Criteria: * Genetic or secondary forms of FSGS. * Hepatitis B, C or HIV positive. * Pregnant or breast-feeding. * Active infection. * Kidney transplant. * Anemia with Hgb \< 8.0 g/dL. * Thrombocytopenia with platelet count \< 100'000. * Any other disease, metabolic dysfunction, physical examination finding, or clinical laboratory finding giving reasonable suspicion of a disease or condition that contraindicates the use of an investigational drug or that may affect the interpretation of the results or render the patient at high risk from treatment complication. * Patients who have received cyclophosphamide in the last 6 months. * Patients who received rituximab previously with CD20 count of \< 5 cells/microliter at the time of enrollment. * For women who are not postmenopausal (≥ 12 months of non-therapy-induced amenorrhea) or surgically sterile (absence of ovaries and/or uterus): agreement to remain abstinent or use two adequate methods of contraception, including at least one method with a failure rate of less than (\<) 1 percent (%) per year, during the treatment period and for at least 18 months after the last dose of study drug. * For men: agreement to remain abstinent or use two adequate methods for contraception, including at least one method with failure rate of less than 1% per year during the treatment period and for at least 6 months (180 days) after the last dose of drug.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • Mayo Clinic in Rochester

    Rochester, Minnesota, 55905, United States

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