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Ublituximab

Phase 3

Relapsing Multiple Sclerosis (RMS) | Monoclonal antibody | Neurology |TG Therapeutics, Inc.|Last Updated: Jul 21, 2026

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Trial Design
RandomizedDouble-BlindACTIVE_CONTROLLEDDMC
Total Trials3
Total Enrollment2,194
FDA Designations
No designations recorded
Clinical trial landscape

Ublituximab · 15 trials · 16 indications

Phase 3 6Phase 2 6Phase 1 3
NCT07211633A Study to Evaluate the Pharmacokinetics, Pharmacodynamics, Safety, Radiological and Clinical Effects of Subcutaneous Ublituximab in Participants With Relapsing Multiple Sclerosis (RMS)Relapsing Multiple Sclerosis
ACTIVE NOT_RECRUITING360 Analytics
NCT05877963Study to Evaluate Safety, Efficacy and Pharmacokinetics (PK) of a Modified Regimen of UblituximabRelapsing Multiple Sclerosis
RECRUITING800 Analytics
NCT04130997An Extension Study of Ublituximab in Participants With Relapsing Multiple SclerosisRelapsing Multiple Sclerosis (RMS)
ACTIVE NOT_RECRUITING1,100 Analytics
NCT03277261Study to Assess the Efficacy and Safety of Ublituximab in Participants With Relapsing Forms of Multiple Sclerosis (RMS) ( ULTIMATE 1 )Relapsing Multiple Sclerosis (RMS)
COMPLETED549 Analytics
NCT03277248Study to Assess the Efficacy and Safety of Ublituximab in Participants With Relapsing Forms of Multiple Sclerosis (RMS)Relapsing Multiple Sclerosis (RMS)
COMPLETED545 Analytics
NCT02301156Ublituximab in Combination With Ibrutinib Versus Ibrutinib Alone in Participants With Previously Treated High-Risk Chronic Lymphocytic Leukemia (CLL)Chronic Lymphocytic Leukemia
COMPLETED126 Analytics
PHASE3ACTIVE NOT_RECRUITING
A Study to Evaluate the Pharmacokinetics, Pharmacodynamics, Safety, Radiological and Clinical Effects of Subcutaneous Ublituximab in Participants With Relapsing Multiple Sclerosis (RMS)
Relapsing Multiple SclerosisUnlock trial analytics
PHASE3RECRUITING
Study to Evaluate Safety, Efficacy and Pharmacokinetics (PK) of a Modified Regimen of Ublituximab
Relapsing Multiple SclerosisUnlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
An Extension Study of Ublituximab in Participants With Relapsing Multiple Sclerosis
Relapsing Multiple Sclerosis (RMS)Unlock trial analytics
PHASE3COMPLETED
Study to Assess the Efficacy and Safety of Ublituximab in Participants With Relapsing Forms of Multiple Sclerosis (RMS) ( ULTIMATE 1 )
Relapsing Multiple Sclerosis (RMS)Unlock trial analytics
PHASE3COMPLETED
Study to Assess the Efficacy and Safety of Ublituximab in Participants With Relapsing Forms of Multiple Sclerosis (RMS)
Relapsing Multiple Sclerosis (RMS)Unlock trial analytics
PHASE3COMPLETED
Ublituximab in Combination With Ibrutinib Versus Ibrutinib Alone in Participants With Previously Treated High-Risk Chronic Lymphocytic Leukemia (CLL)
Chronic Lymphocytic LeukemiaUnlock trial analytics
Study Endpoints
Primary Endpoints
Area Under the Curve From Week 0 to Week 24 (AUC0-W24) of Ublituximab
Up to Week 24
Part A and Part C: Percentage of Participants With no Change or Reduction in Number of T1 Gd-Enhancing Lesions From Baseline to Week 48
Baseline up to Week 48

The Gd-enhancing T1 lesions will be evaluated using magnetic resonance imaging (MRI) technique.

Part B: Area Under the Curve Over the First 16 Weeks (AUC0-W16) of Ublituximab
Predose and at multiple timepoints up to Week 16
Annualized Relapse Rate (ARR)
Up to Week 336

ARR is defined as the number of relapses per-participant year. The estimate of ARR will be the total number of relapses divided by the sum of duration on study treatment (years).

Overall Response Rate (ORR)
Up to 62 months

ORR: Percentage of participants with best overall response of partial response(PR) and complete response(CR). CR criteria: No evidence of new disease; Absolute lymphocyte count(ALC)\<4x10\^9/liter(L); Regression of all target nodal masses to ≤1.5 centimeters(cm) in longest diameter(LD); Normal spleen,liver size; Regression to normal of all nodal non-target disease and disappearance of all detectable; Non-nodal, non-target disease; Morphologically negative bone marrow; No lymphoid nodules; Absolute neutrophil count(ANC)\>1.5x10\^9/L,platelets≥100x10\^9/L,hemoglobin (Hgb)≥110 gram per liter(g/L). PR criteria: No evidence of new disease; Response in 2 of following if abnormal at baseline: ALC\<4x10\^9/L or \>=50% decrease from baseline in sum of products(SPD) of target nodal lesions; splenomegaly; hepatomegaly;\>=50% decrease from baseline in CLL marrow infiltrate/B-lymphoid nodules; response in any 1:ANC\>1.5x10\^9/L,platelets\>100x10\^9/L,Hgb\>110g/L or \>=50% increase over baseline in any of these.

Time to Onset of a Clinical Worsening Event
Up to Week 24
Percentage of Participants with at Least 20% Reduction From Baseline in PANSS Total Score
At Week 12
Part A: Area Under the Curve From Week 0 to 24 (AUC0-W24) of Ublituximab
Predose and multiple timepoints up to Week 24
Part A: Maximum Observed Concentration (Cmax) of Ublituximab
Day 1 and Day 15
Part A: Participant B Cell Counts
Up to Week 24
Part B: Annualized Relapse Rate (ARR)
Up to 96 weeks
Part C: Annualized Relapse Rate (ARR)
Up to 168 weeks
Part 2: Area under the curve (AUC) at Steady State [AUCss] of Ublituximab
Up to Week 12
Number of participants with treatment-related events as assessed by CTCAE V4.0
96 weeks on therapy

to determine the incidence of adverse events and any abnormal laboratory values

Responder Rate of B-Cell Depletion at Week 4
Week 4

Responders Rate is defined as percentage of participants with greater than or equal to (≥) 95% reduction of B cells (cluster of differentiation 19 positive \[CD19+\] cells) within 2 weeks after the second infusion (Day 15).

To evaluate the safety of ublituximab in combination with ibrutinib in patients with select B-cell malignancies
28 days (1 cycle of therapy)

To determine the incidence of adverse events, any potential abnormal laboratory results and any dose-limiting toxicities

Maximum Tolerated Dose acceptable for participants
28 days (1 cycle of therapy)

To determine the incidence of adverse events, any potential abnormal laboratory results and any dose-limiting toxicities

Number of Participants with Adverse Events as a Measure of Safety and Tolerability
Subjects will be followed for 4 weeks

Safety for all study patients will be evaluated by a Data Safety Monitoring Board to determine if feasible to continue with dose escalation

Secondary Endpoints
Minimum Plasma Concentration (Cmin) of Ublituximab
Up to Week 24
Average Concentration at Steady State (Cavg,ss) of Ublituximab
Up to Week 120
Maximum Plasma Concentration (Cmax) of Ublituximab
Up to Week 120
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Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Ublituximab IVACTIVE_COMPARATORApproved dosage.
Ublituximab SC Regimen 1EXPERIMENTALNew regimen.
Ublituximab SC Regimen 2EXPERIMENTALNew regimen.
Part A: UblituximabEXPERIMENTALParticipants will receive a modified regimen of ublituximab including infusions on Day 1 of Week 1 (W1D1), Day 15, if applicable, and ublituximab 450 milligrams (mg) infusion at Week 24. With Protocol Version 6.0, enrollment in Part A was closed.
Part B: Ublituximab /Placebo (Treatment Arm A)EXPERIMENTALParticipants will receive 600 mg of ublituximab on W1D1 followed by a placebo infusion on Day 15 and 450 mg ublituximab infusion at Week 24. With Protocol Version 7.0, enrollment in Part B will be closed.
Part B: Ublituximab (Treatment Arm B)EXPERIMENTALParticipants will receive 150 mg of ublituximab on W1D1 followed by 450 mg on Day 15 and at Week 24. With Protocol Version 7.0, enrollment in Part B will be closed.
Part C: Ublituximab (Treatment Arm C)EXPERIMENTALParticipants will receive 150 mg of ublituximab on W1D1, followed by 450 mg on Day 15 and at Week 24.
Ublituximab InfusionsEXPERIMENTALRMS301/RMS302: All participants transferring from RMS301/RMS302 who sign consent for this study will receive an initial 4-hour infusion of 150 mg ublituximab on Week 1 (Day 1) followed by a 1-hour infusion of 450 mg ublituximab 14 days later Week 3 (Day 15). Subsequent infusions of ublituximab will be administered at 450 mg for 1-hour every 24 weeks from Weeks 24 to 312. RMS201E: All participants transferring from RMS201E who sign consent for this study will receive a 1-hour infusion of 450 mg ublituximab on Week 1 (Day 1) and subsequent infusions of ublituximab will be administered at 450 mg for 1-hour every 24 weeks from Weeks 24 to 312. For all participants (RMS301/RMS302/RMS201E), infusion treatment will continue for 312 weeks, or until physician or participant decision to withdraw from the study.
Ublituximab + Oral PlaceboEXPERIMENTALParticipants were administered ublituximab 150 milligrams (mg), intravenous (IV) infusion over 4 hours (h) on Day 1 followed by 450 mg over 1 h on Days 15, 168, 336 and 504 (Week 72) along with the oral placebo once daily (QD) from Day 1 up to the last day of Week 95.
Teriflunomide + IV PlaceboACTIVE_COMPARATORParticipants were administered teriflunomide 14 mg tablet, orally, QD from Day 1 up to the last day of Week 95 along with the placebo IV infusion on Days 1, 15, 168, 336 and 504 (Week 72).
Ublituximab + IbrutinibEXPERIMENTALParticipants will receive ublituximab intravenous (IV) infusion, up to 150 milligrams (mg) once on Day 1, 750 mg on Day 2, 900 mg on Days 8 and 15 of Cycle 1 (Cycle duration=28 days) followed by 900 mg on Day 1 of Cycles 2 to 6 and 900 mg on Day 1 of every 3rd cycle thereafter for up to 62 months along with ibrutinib 420 mg capsules, orally, once daily (QD) in each 28-day cycle for up to 62 months.
IbrutinibACTIVE_COMPARATORParticipants will receive ibrutinib 420 mg capsules, orally, QD in each 28-day cycle up to 62 months.
Randomized controlled period (RCP)EXPERIMENTALResponder participants from efgartigimod induction period will be randomised 1:1 ratio to receive either ublituximab or ublituximab matching-placebo intravenous (IV) infusion.
Open-label period (OLP): UblituximabEXPERIMENTALNon-responder participants from efgartigimod induction period will receive ublituximab IV infusion.
UblituximabEXPERIMENTALParticipants will receive ublituximab intravenous (IV) infusion.
Part B: UblituximabEXPERIMENTALNew Regimen
Part B: PlaceboPLACEBO_COMPARATOR -
Part B: FingolimodEXPERIMENTAL -
Part B: IV PlaceboPLACEBO_COMPARATOR -
Part C: OLEEXPERIMENTAL -
Part 1: Ublituximab SCEXPERIMENTALParticipants will receive ublituximab SC, using a syringe at one of three different sites of administration.
Part 2: Ublituximab SCEXPERIMENTALParticipants will be randomized to receive ublituximab SC using either the prefilled pen or a syringe.
Cohort 1EXPERIMENTALParticipant received intravenous (IV) infusion of ublituximab 150 milligrams (mg)/4 hour (hr) on Day 1, 450 mg/3 hr on Day 15 and 450 mg/1.5 hr on Week 24. Some participants initially received placebo IV infusion /4 hr on Day 1 and /3 hr on Day 15 before receiving ublituximab.
Cohort 2EXPERIMENTALParticipant received IV infusion of ublituximab 150 mg/4 hr on Day 1, 450 mg/1.5 hr on Day 15 and 450 mg/1 hr on Week 24. Some participants initially received placebo IV infusion /4 hr on Day 1 and /1.5 hr on Day 15 before receiving ublituximab.
Cohort 3EXPERIMENTALParticipant received IV infusion of ublituximab 150 mg/4 hr on Day 1, 450 mg/1 hr on Day 15 and 600 mg/1 hr on Week 24. Some participants initially received placebo IV infusion /4 hr on Day 1 and /1 hr on Day 15 before receiving ublituximab.
Cohort 4EXPERIMENTALParticipant received IV infusion of ublituximab 150 mg/3 hr on Day 1, 600 mg/1 hr on Day 15 and 600 mg/1 hr on Week 24. Some participants initially received placebo IV infusion /3 hr on Day 1 and /1 hr on Day 15 before receiving ublituximab.
Cohort 5EXPERIMENTALParticipant received IV infusion of ublituximab 150 mg/2 hr on Day 1, 600 mg/1 hr on Day 15 and 600 mg/1 hr on Week 24. Some participants initially received placebo IV infusion /2 hr on Day 1 and /1 hr on Day 15 before receiving ublituximab.
Cohort 6EXPERIMENTALParticipant received IV infusion of ublituximab 150 mg/1 hr on Day 1, 600 mg/1 hr on Day 15 and 600 mg/1 hr on Week 24. Some participants initially received placebo IV infusion /1 hr on Day 1 and /1 hr on Day 15 before receiving ublituximab.
Ublituximab + TGR-1202EXPERIMENTALUblituximab at a fixed IV infusion dose Days 1, 8 and 15 followed by maintenance infusions TGR-1202 oral daily dose
Ublituximab + TGR-1202 + ibrutinibEXPERIMENTALUblituximab at a fixed IV infusion dose Days 1, 8 and 15 followed by maintenance infusions TGR-1202 oral daily dose ibrutinib oral daily dose
Ublituximab + TGR-1202 + bendamustineEXPERIMENTALUblituximab at a fixed IV infusion dose Days 1, 8 and 15 followed by maintenance infusions TGR-1202 oral daily dose Bendamustine at a fixed IV infusion on Days 1 \& 2
Interventions
NameTypeDescription
UblituximabBIOLOGICALAdministered as an IV infusion.
PlaceboDRUGIV infusion
TeriflunomideDRUGFilm-coated tablets administered orally.
Oral PlaceboDRUGAdministered orally.
IV PlaceboDRUGAdministered as an IV infusion.
IbrutinibDRUGAdministered orally
FingolimodDRUGOral capsule.
Prefilled penDEVICEUblituximab will be administered as an SC injection by prefilled pen.
Ublituximab + TGR-1202DRUGUblituximab IV infusion TGR-1202 oral daily dose
Ublituximab + TGR-1202 + ibrutinibDRUGUblituximab IV infusion TGR-1202 oral daily dose Ibrutinib oral daily dose
Ublituximab + TGR-1202 + bendamustineDRUGUblituximab IV infusion TGR-1202 oral daily dose Bendamustine IV infusion
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Eligibility Criteria
Age Range18 Years to 65 Years
SexALL
Healthy VolunteersNo
Study Sites48

Inclusion Criteria: 1. Diagnosis of RMS (2017 Revised McDonald criteria). 2. Expanded Disability Status Scale (EDSS) score ≤ 5.5 at screening. 3. Neurologically stable for \> 30 days prior to Screening and Day 1. 4. Female participants of childbearing potential must consent to use a highly effectiv...

Countries:Bosnia and HerzegovinaBulgariaCroatiaCzechiaGeorgiaHungaryNorth MacedoniaSerbiaUkraineUnited StatesPolandBelarusRussiaIsrael
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Recent Changes (Last 90 Days)
LOWJul 21, 2026NCT07680946Status: NOT_YET_RECRUITING → RECRUITING
MEDIUMJul 20, 2026NCT07503873primaryCompletionDate: changed
MEDIUMJul 20, 2026NCT07503873primaryCompletionDate: changed
LOWJul 17, 2026NCT07673744lastUpdatePostDate: changed
LOWJul 17, 2026NCT05877963lastUpdatePostDate: changed
LOWJul 17, 2026NCT07220252lastUpdatePostDate: changed
LOWJul 17, 2026NCT07211633lastUpdatePostDate: changed
LOWJul 17, 2026NCT04130997lastUpdatePostDate: changed
LOWJul 17, 2026NCT07673744lastUpdatePostDate: changed
LOWJul 17, 2026NCT05877963lastUpdatePostDate: changed
LOWJul 17, 2026NCT07220252lastUpdatePostDate: changed
LOWJul 17, 2026NCT04130997lastUpdatePostDate: changed
LOWJul 17, 2026NCT07211633lastUpdatePostDate: changed
LOWJul 8, 2026NCT07220252Status: NOT_YET_RECRUITING → RECRUITING
LOWJul 8, 2026NCT07220252Status: NOT_YET_RECRUITING → RECRUITING
MEDIUMJul 7, 2026NCT07503873Status: NOT_YET_RECRUITING → RECRUITING
MEDIUMJul 7, 2026NCT07503873Status: NOT_YET_RECRUITING → RECRUITING
LOWJul 2, 2026NCT07680946NEW_TRIAL: changed
LOWJul 2, 2026NCT07680946NEW_TRIAL: changed
LOWJul 2, 2026NCT07680946NEW_TRIAL: changed