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Study to Evaluate Efficacy When Transitioning From a Current Disease Modifying Therapy (DMT) to Ublituximab

Recruiting
18 - 65 years of age
Both
Phase 3

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Overview

The primary purpose of this phase 3b study is to assess efficacy after transition from a current DMT to ublituximab, as measured by T1 Gadolinium (Gd)-enhancing lesions.

Eligibility

Inclusion Criteria:

  • Diagnosis of RMS (2017 Revised McDonald criteria).
  • Participants currently treated with ocrelizumab, rituximab, ofatumumab.
  • Participants that are currently being treated with other selected DMTs.
  • Expanded Disability Status Scale (EDSS) score ≤ 5.5 at screening.
  • Neurologically stable for > 30 days prior to first dose of ublituximab.

Exclusion Criteria:

  • Suboptimal response to anti-CD20 therapy in the prior 6 months defined as
    1. Documented MRI worsening (≥ 2 active T1-weighted Gd-enhancing lesions, any new or enlarging T2 lesions and/or
    2. Clinical worsening as measured by EDSS or meaningful change in clinical measure
  • Relapse within the 12 months prior to W1D1.
  • History of any Grade > 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).

Study details

Relapsing Multiple Sclerosis

NCT05877963

TG Therapeutics, Inc.

20 May 2024

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