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belantamab mafodotin to the existing stable standard background therapy

Phase 2

SLE - Systemic Lupus Erythematosus | ADC | Immunology |GSK plc|Trials Updated: Sep 28, 2026

belantamab mafodotin to the existing stable standard background therapy development status

Highest phase Phase 2
Registered trials 1 across 1 sponsor since Sep 2026

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLED
Total Trials1
Total Enrollment12

FDA Designations

No designations recorded

belantamab mafodotin to the existing stable standard background therapy clinical trials

belantamab mafodotin to the existing stable standard background therapy · 1 trial · 1 indication

Phase 2 1
NCT07844200The Primary Objective of the Trial is to Evaluate the Effect of the Addition of Belantamab Mafodotin to Standard of Care Therapy on the Titres of Serum Anti-dsDNA Antibodies in Patients With Previously Treated SLE.SLE - Systemic Lupus Erythematosus
NOT YET_RECRUITING12 Analytics
PHASE2NOT YET_RECRUITING
The Primary Objective of the Trial is to Evaluate the Effect of the Addition of Belantamab Mafodotin to Standard of Care Therapy on the Titres of Serum Anti-dsDNA Antibodies in Patients With Previously Treated SLE.
SLE - Systemic Lupus ErythematosusUnlock trial analytics

Study Endpoints

Primary Endpoints

Change of serum anti-dsDNA antibody titers at 24 weeks of treatment vs baseline
Assessments while participant is on treatment will be considered. Specifically, available assessments at 24 weeks (+/- 4 weeks) will be considered in the endpoint evaluation. If multiple assessments are included in the specified time window, the one that

The change of serum anti-dsDNA antibody titers at 24 weeks of treatment compared to baseline will be summarized using descriptive statistics, including mean, standard deviation, median, percentiles and range. The analysis will be performed in the Response evaluable population. Change from baseline will be calculated as post-baseline value minus baseline value. The 95% confidence interval (CI) of the mean change will also be provided. To assess whether the median change from baseline is significantly different from zero, the Wilcoxon Signed-Rank Test will be used. A decrease of approximately 30 IU/mL in 50% of the patients in a JAK1/JAK2 inhibitor trial will be evaluated as significant.

Secondary Endpoints

The safety and tolerability profile of belantamab mafodotin in patients with SLE
Changes from baseline until at least 1 dose of belantamab mafodotin (Cycle 1, Day 1).
The effect of belantamab mafodotin on SLE serology on additional timepoints of treatment.
Assessments while participant is on treatment will be considered. Specifically, available assessments at 12, 36, 48 weeks and end of trial (EOT) (+/- 4 weeks) will be considered in the endpoint evaluation.
The effect of belantamab mafodotin on SLE clinical endpoints and resolution of SLE symptoms.
Assessments while participant is on treatment will be considered. Specifically, available assessments at 12, 24, 36, 48, 60, 72 weeks and end of trial (EOT) (+/- 4 weeks) will be considered in the endpoint evaluation.
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Single-arm trial, Open-label study, Overall, 12 participants will be enrolled in the trial.OTHERNon-randomized, open label assignment, No adaptive design specified, Planned Duration of trial intervention is 36 months. Participants will be treated for a total period of two years per participant or until treatment failure, physician decision, unacceptable toxicity, withdrawal of consent, or death (whichever occurs first). NOTE 1: The start of a Cycle1 D1 of a cycle is defined when Belantamab mafodotin is administered.

Interventions

NameTypeDescription
belantamab mafodotin to the existing stable standard background therapyDRUGTrial treatment is defined as the addition of belantamab mafodotin to the existing stable standard background therapy. Belantamab mafodotin will be added to existing stable background SoC therapy, which can be GC, HCQ, or a single conventional immunosuppressive drug (such as azathioprine, methotrexate, or mycophenolate). For the purposes of this trial, belantamab mafodotin is considered an investigational medicinal product (IMP), while background SoC therapy regimen(s) is(are) considered auxiliary medicinal product(s) (AxMP). Background SoC therapy regimens should be authorized for use in the European Union and/or the country where the trial is taking place, and/or clearly endorsed/recommended by international treatment guidelines, if not otherwise authorized. Belantamab mafodotin is not authorized for use in the European Union.
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Eligibility Criteria

Age Range18 Years to 60 Years
SexALL
Healthy VolunteersNo

Inclusion Criteria 1. Diagnosis of SLE according to the 2019 EULAR/ACR SLE classification criteria. 2. Age between 18 and 60 years. 3. Have a body mass index (BMI) between 18 and 32 kg/m² (BMI = weight/height2), inclusive, and a body weight of no less than 35 kg. 4. Have a positive anti-dsDNA test ...

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Frequently asked questions about belantamab mafodotin to the existing stable standard background therapy

What is belantamab mafodotin used for in SLE?

Belantamab mafodotin is being studied as an add-on to existing stable standard background therapy in patients with previously treated systemic lupus erythematosus (SLE). The Phase 2 trial evaluates whether adding it to standard of care affects serum anti-dsDNA antibody titres in adults aged 18 and older.

Who is developing belantamab mafodotin for SLE?

GSK plc, which trades under the ticker GSK, is the developer of belantamab mafodotin. The company is sponsoring the Phase 2 study of the drug added to standard background therapy in previously treated systemic lupus erythematosus.

What phase is belantamab mafodotin in for SLE?

Belantamab mafodotin is in Phase 2 development for systemic lupus erythematosus. The single registered trial, NCT07844200, is a Phase 2 study that has not yet begun recruiting participants. It is an investigational agent and is not approved for SLE.

What clinical trial is belantamab mafodotin in for SLE?

One trial is registered: NCT07844200, titled a study evaluating the effect of adding belantamab mafodotin to standard of care therapy on serum anti-dsDNA antibody titres in patients with previously treated SLE. It is a Phase 2, uncontrolled, non-randomized study with a planned enrollment of 12 adults, currently not yet recruiting.

How many patients are enrolled in the belantamab mafodotin SLE trial?

The Phase 2 trial NCT07844200 plans to enroll 12 participants. It is an uncontrolled, non-randomized study open to all sexes, with a minimum age of 18 years. Healthy volunteers are not eligible, and the trial is not yet recruiting.

Is belantamab mafodotin approved for systemic lupus erythematosus?

No. Belantamab mafodotin is investigational for systemic lupus erythematosus and remains in clinical development. The only registered SLE study, NCT07844200, is a Phase 2 trial that has not yet started recruiting, so the drug has no approval for this indication.