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Siltuximab

Phase 1

Non-Hodgkin Lymphoma | Small molecule | Oncology |Genmab A/S|Last Updated: May 11, 2025

Target and mechanism

Molecular targetIL6
Target classAntagonist
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment20

FDA Designations

No designations recorded

Clinical trial landscape

Siltuximab · 1 trial · 2 indications

Phase 1 1
NCT06447376Study of Cytokine Release Syndrome Prophylaxis and Treatment With Siltuximab Prior to EpcoritamabNon-Hodgkin Lymphoma
RECRUITING20 Analytics
PHASE1RECRUITING
Study of Cytokine Release Syndrome Prophylaxis and Treatment With Siltuximab Prior to Epcoritamab
Non-Hodgkin LymphomaUnlock trial analytics

Study Endpoints

Primary Endpoints

Incidence of all-grade cytokine release syndrome
Up to 28 days after beginning treatment

The primary objective is to evaluate the feasibility and efficacy of prophylactic administration of siltuximab prior to infusion of the first dose of epcoritamab with the purpose of preventing all-grade CRS, as measured by incidence of all-grade cytokine release syndrome.

Secondary Endpoints

Incidence of grade ≥ 2 cytokine release syndrome
Up to 28 days after beginning treatment
Incidence of all grade and grade ≥ 2 ICANS after siltuximab prophylaxis
Up to 28 days beginning treatment
Incidence of adverse events during Cycle 1 (Day 1 - 28)
Up to 28 days after beginning treatment
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Prophylactic siltuximab + epcoritamabEXPERIMENTALSiltuximab Administration: • Participants will receive a single dose of prophylactic siltuximab, 11mg/kg, started 1 hour prior (+/- 60 minutes) to the infusion of epcoritamab. There is no planned dose escalation of siltuximab and epcoritamab dosing will be done following the standard planned ramp-up over the course of the first 3 weeks Epcoritamab Infusion: • The treatment regimen of epcoritamab is done in 28-day cycles. Epcoritamab is to be administered by subcutaneous injection. Participants can be treated for up to 24 cycles. Participants who achieve complete remission at the time of their disease response assessment after 12 cycles may be considered for early discontinuation of treatment.

Interventions

NameTypeDescription
SiltuximabDRUGSingle dose of prophylactic siltuximab, 11mg/kg, started 1 hour prior (+/- 60 minutes) to the infusion of epcoritamab.
EpcoritamabDRUGEpcoritamab dosing for Diffuse Large B-cell Lymphoma Participants: * Cycle 1, Day 1 = 0.16mg * Cycle 1, Day 8 = 0.8mg * Cycle 1, Day 15 = 48mg * Cycle 1, Day 22 = 48mg * Cycles 2 \& 3, Day 1 = 48mg * Cycles 2 \& 3, Day 8 = 48mg * Cycles 2 \& 3, Day 15 = 48mg * Cycles 2 \& 3, Day 22 = 48mg * Cycles 4-9, Day 1 = 48mg * Cycles 4-9, Day 15 = 48mg * Cycle 10+ , Day 1 = 48mg Epcoritamab dosing for Follicular Lymphoma Participants: * Cycle 1, Day 1 = 0.16mg * Cycle 1, Day 8 = 0.8mg * Cycle 1, Day 15 = 3mg * Cycle 1, Day 22 = 48mg * Cycle 2 \& 3, Day 1 = 48mg * Cycle 2 \& 3, Day 8 = 48mg * Cycle 2 \& 3, Day 15 = 48mg * Cycle 2 \& 3, Day 22 = 48mg * Cycle 4-9, Day 1 = 48mg * Cycle 4-9, Day 15 = 48mg * Cycle 10+ , Day 1 = 48mg
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Eligibility Criteria

Age Range18 Years to 65 Years
SexALL
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: * Adults 18 years of age and older * Diagnosis of non-Hodgkin lymphoma. * DLBCL (including high grade B cell lymphoma and follicular lymphoma grade 3B and transformed follicular lymphoma) treated with at least 2 lines of systemic antineoplastic therapies, including at least 1...

Countries:United States
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Frequently asked questions about Siltuximab

What is Siltuximab used for in Non-Hodgkin Lymphoma?

Siltuximab is being studied for use in Non-Hodgkin Lymphoma, specifically as prophylaxis and treatment for cytokine release syndrome prior to treatment with epcoritamab. It is currently in Phase 1 clinical development and is investigational, meaning it is not yet approved for this use.

What does Siltuximab target?

Siltuximab is a monoclonal antibody (a -mab) that targets interleukin-6 (IL-6). By binding to IL-6, it is intended to block its activity, which may help prevent or treat cytokine release syndrome in patients with Non-Hodgkin Lymphoma receiving certain therapies.

Who makes Siltuximab?

Siltuximab is being developed by Genmab A/S, a biopharmaceutical company traded under the ticker GMAB. The company is conducting a Phase 1 clinical trial to evaluate the drug in Non-Hodgkin Lymphoma patients.

What phase is Siltuximab in?

Siltuximab is in Phase 1 clinical development for Non-Hodgkin Lymphoma. It is an investigational drug and has not been approved by regulatory authorities for this indication. The ongoing trial is currently recruiting participants in the United States.

What clinical trials is Siltuximab in?

Siltuximab is being evaluated in a single Phase 1 clinical trial with the identifier NCT06447376. The study, titled 'Study of Cytokine Release Syndrome Prophylaxis and Treatment With Siltuximab Prior to Epcoritamab,' is recruiting 20 participants with Non-Hodgkin Lymphoma and cytokine release syndrome in the United States.

Is Siltuximab the same as other drugs?

Siltuximab is a distinct monoclonal antibody and is not known by other names in the context of this development program. It is being studied specifically for its role in managing cytokine release syndrome in Non-Hodgkin Lymphoma patients treated with epcoritamab.