Study to Evaluate Safety, Efficacy and Pharmacokinetics (PK) of a Modified Regimen of Ublituximab

NCT ID: NCT05877963

Last Updated: 2025-11-28

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE3

Total Enrollment

800 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-06-13

Study Completion Date

2026-09-01

Brief Summary

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The primary purpose of this phase 3b study is to assess the efficacy of a modified regimen of ublituximab as measured by T1 Gadolinium (Gd)-enhancing lesions and pharmacokinetics in participants with Relapsing Multiple Sclerosis (RMS). The study consists of 2 parts: Part A is single-armed and open-label and Part B is randomized, double-blind, placebo-controlled.

Detailed Description

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Conditions

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Relapsing Multiple Sclerosis

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Investigators

Study Groups

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Part A: Ublituximab

Participants 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.

Group Type EXPERIMENTAL

Ublituximab

Intervention Type BIOLOGICAL

Administered as an intravenous (IV) infusion.

Part B: Ublituximab /Placebo (Treatment Arm A)

Participants will receive 600 mg of ublituximab on W1D1 followed by a placebo infusion on Day 15 and 450 mg ublituximab infusion at Week 24.

Group Type EXPERIMENTAL

Ublituximab

Intervention Type BIOLOGICAL

Administered as an intravenous (IV) infusion.

Placebo

Intervention Type DRUG

IV infusion

Part B: Ublituximab (Treatment Arm B)

Participants will receive 150 mg of ublituximab on W1D1 followed by 450 mg on Day 15 and at Week 24.

Group Type EXPERIMENTAL

Ublituximab

Intervention Type BIOLOGICAL

Administered as an intravenous (IV) infusion.

Interventions

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Ublituximab

Administered as an intravenous (IV) infusion.

Intervention Type BIOLOGICAL

Placebo

IV infusion

Intervention Type DRUG

Other Intervention Names

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TG-1101 BRIUMVI

Eligibility Criteria

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Inclusion Criteria

* Diagnosis of RMS (2017 Revised McDonald criteria).
* Participants must meet one of the following prior treatment definitions:

1. Participants naïve to treatment.
2. Participants previously treated with a disease modifying therapy (DMT) who have discontinued treatment prior to consent and meet the washout requirements.
* Expanded Disability Status Scale (EDSS) score ≤ 5.5 at screening.
* Neurologically stable for \> 30 days prior to first dose of ublituximab.
* Female participants of childbearing potential must consent to use a medically acceptable method of contraception from consent, throughout the study period, and for 6 months after the last dose of ublituximab.

Exclusion Criteria

* History of any serious 3 Infusion Related Reaction (IRR) on prior anti-CD20 therapy.
* Primary-progressive multiple sclerosis (PPMS) or inactive Secondary Progressive MS (SPMS).
* Active chronic (or stable but treated with immune therapy) disease of the immune system other than MS (e.g., rheumatoid arthritis, scleroderma, Sjögren's syndrome, Crohn's disease, ulcerative colitis, etc.) or immunodeficiency syndrome (hereditary immune deficiency, drug-induced immune deficiency, etc.).
* Current evidence or known history of clinically significant infection, including: chronic, recurrent, or ongoing active viral, bacterial, or fungal infectious disease requiring long term systemic treatment such as, but not limited to chronic urinary tract infection, chronic pulmonary infection with bronchiectasis, tuberculosis, or active hepatitis C virus (HCV).
* Previous serious opportunistic or atypical infection.
* Evidence of chronic active or history of hepatitis B virus (HBV) infection as evidenced by a detectable hepatitis B surface antigen (HBsAg), or positive hepatitis B core antibody (HBcAb), or chronic hepatitis C infection. Participants with positive hepatitis C virus antibody (HCV Ab) are eligible only if polymerase chain reaction (PCR) is negative for HCV ribonucleic acid (RNA).
* History or evidence (clinical, radiological, or biomarker) of suspected or confirmed progressive multifocal leukoencephalopathy (PML).
* Receipt of any live or live-attenuated vaccines (including vaccines for varicella-zoster virus or measles) within 4 weeks prior to first study drug administration.
* Participants requiring treatment with intravenous immune globulin (IVIG) for decreased immunoglobulins within the 12 months prior to W1D1.
* Any active malignancies other than adequately treated basal, squamous cell or in situ carcinoma.
* Participants who have ever received ublituximab, alemtuzumab, cyclophosphamide, mitoxantrone, cladribine, or daclizumab (including for non-MS indications).
Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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TG Therapeutics, Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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TG Therapeutics Investigational Trial Site

Birmingham, Alabama, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Cullman, Alabama, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Orange, California, United States

Site Status RECRUITING

TG Investigational Site

Fort Collins, Colorado, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Washington D.C., District of Columbia, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Tampa, Florida, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Chicago, Illinois, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Indianapolis, Indiana, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Iowa City, Iowa, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Overland Park, Kansas, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Lutherville, Maryland, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Boston, Massachusetts, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Foxborough, Massachusetts, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

North Worcester, Massachusetts, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Wellesley, Massachusetts, United States

Site Status RECRUITING

TG Investigational Site

Farmington, Michigan, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Golden Valley, Minnesota, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Plymouth, Minnesota, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

St Louis, Missouri, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

New York, New York, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

New York, New York, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial SiteCharlotte

Charlotte, North Carolina, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Raleigh, North Carolina, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Cleveland, Ohio, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Dayton, Ohio, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Oklahoma City, Oklahoma, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Greenville, South Carolina, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Knoxville, Tennessee, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Waco, Texas, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Salt Lake City, Utah, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Vienna, Virginia, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Kirkland, Washington, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Seattle, Washington, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Spokane, Washington, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Milwaukee, Wisconsin, United States

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Bydgoszcz, , Poland

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Katowice, , Poland

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Katowice, , Poland

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Kielce, , Poland

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Krakow, , Poland

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Lodz, , Poland

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Olsztyn, , Poland

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Poznan, , Poland

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Warsaw, , Poland

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Zabrze, , Poland

Site Status RECRUITING

TG Therapeutics Investigational Trial Site

Żory, , Poland

Site Status RECRUITING

Countries

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United States Poland

Central Contacts

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TG Therapeutics Clinical Support Team

Role: CONTACT

1-877-575-8489

Other Identifiers

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2024-519284-18-00

Identifier Type: OTHER

Identifier Source: secondary_id

TG1101-RMS401

Identifier Type: -

Identifier Source: org_study_id

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