ClinicalTrials.gg
RecruitingNCT07503873Updated Oct 29, 2026

A Study to Evaluate Pharmacokinetics (PK) and Safety of Subcutaneous (SC) Ublituximab Administered at Various Injection Sites and Relative Bioavailability Via Autoinjector (AI) Versus Syringe Subcutaneously in Participants With Multiple Sclerosis (MS)

A Phase 2 interventional study of Ublituximab and Ublituximab in Multiple Sclerosis, sponsored by TG Therapeutics, Inc.. Recruiting at 44 sites in 6 countries. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2026-10-29.

Sponsored by TG Therapeutics, Inc. · Phase 2, Interventional, and Treatment

From the registry’s dates

  • Started Apr 2026; still recruiting 7 months later.
Updated Oct 29, 20266 sites added1 site removedGo to Updates ↓
Phase
Phase 2
Study type
Interventional
Enrollment
350
Allocation
Randomized
Ages
18 Years to 65 Years
Sex
All
01

Study summary

The purpose of this study is to evaluate the PK and safety of ublituximab SC at different sites of administration and relative bioavailability of ublituximab SC administered with a prefilled pen versus syringe.

02

Conditions studied

  • Multiple Sclerosis

Browse trials for

03

In context

Multiple Sclerosis

3,264 studies on the registry are indexed under Multiple Sclerosis; 659 are open to participants now.

This study's planned enrollment of 350 is above the median of 50 across 2,201 interventional studies indexed under Multiple Sclerosis.

Browse Multiple Sclerosis studies →

Lead sponsor

TG Therapeutics, Inc. is the lead sponsor of 40 studies on the registry; 9 are open to participants now.

Of its 16 completed or terminated interventional studies of FDA-regulated products, 9 (56%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Diagnosis of relapsing multiple sclerosis (RMS) (2017 Revised McDonald criteria).
  2. Expanded Disability Status Scale (EDSS) score less than or equal to (≤) 5.5 at screening.
  3. Neurologically stable for more than (>) 30 days prior to screening and Day 1.
  4. Female participants of must consent to use an effective method of from consent and for 6 months after the last dose of ublituximab.

Exclusion criteria

Exclusion Criteria:

  1. Primary-progressive multiple sclerosis (PPMS) or inactive secondary progressive multiple sclerosis (SPMS).
  2. Active chronic disease of the immune system other than MS or immunodeficiency syndrome.
  3. Participants with significantly impaired bone marrow function or significant leukopenia or thrombocytopenia.
  4. Participants who received any approved therapy to treat MS within 5 half-lives of the medication prior to screening.
  5. Treatment with any agent within 5 half-lives of the investigational drug prior to screening.
  6. Females who are pregnant or nursing.

Note: Other protocol-specified Inclusion/Exclusion criteria may apply.

Terms in these criteria, in plain language(3)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
350 participants (estimated)

Study arms

  • Experimental
    Part 1: Ublituximab SC

    Participants will receive ublituximab SC, using a syringe at one of three different sites of administration.

    Drug: Ublituximab

  • Experimental
    Part 2: Ublituximab SC

    Participants will be randomized to receive ublituximab SC using either the prefilled pen or a syringe.

    Drug: Ublituximab · Device: Prefilled pen

Interventions

  • Administered as an SC injection by a syringe.

    Also known as: TG-1101

  • Administered as an SC injection by prefilled pen.

    Also known as: TG-1101

  • DevicePrefilled pen

    Ublituximab will be administered as an SC injection by prefilled pen.

06

What researchers measure

Primary outcomes

  1. Part 2: Area under the curve (AUC) at Steady State [AUCss] of Ublituximab

    Time frame: Up to Week 12

Secondary outcomes

  1. Part 1: Plasma Concentrations of Ublituximab

    Time frame: Up to Week 24

  2. Number of Participants With Treatment Emergent Adverse Events (TEAEs)

    Time frame: Up to Week 120

  3. Part 2: Percentage of Participants Reporting Their Level of Satisfaction With the SC Method of Administration of Ublituximab, Assessed by Therapy Administration Satisfaction Questionnaire-Subcutaneous (TASQ-SC)

    Time frame: Up to Week 96

  4. Part 2: Minimum Plasma Concentration at steady state (Cminss) of Ublituximab

    Time frame: pre-dose and at multiple timepoints post-dose up to Week 120

  5. Maximum Plasma Concentration at steady state (Cmaxss) of Ublituximab

    Time frame: pre-dose and at multiple timepoints post-dose up to Week 120

07

Study locations

44 of 44 sites recruiting
  • TG Therapeutics Investigational Trial Site
    Bihać, 77000, Bosnia and Herzegovina
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Mostar, 88000, Bosnia and Herzegovina
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Sarajevo, 71000, Bosnia and Herzegovina
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Tuzla, 75000, Bosnia and Herzegovina
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Zenica, 72000, Bosnia and Herzegovina
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Rustavi, 3700, Georgia
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Tbilisi, 0160, Georgia
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Tbilisi, 101, Georgia
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Tbilisi, 114, Georgia
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Tbilisi, 159, Georgia
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Tbilisi, 179, Georgia
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Shtip, 2000, North Macedonia
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Skopje, 1000, North Macedonia
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Bydgoszcz, 85-796, Poland
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Katowice, 40-568, Poland
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Katowice, 40-686, Poland
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Kielce, 25-726, Poland
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Krakow, 31-826, Poland
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Lodz, 90-324, Poland
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Olsztyn, 10-561, Poland
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Poznan, 61-853, Poland
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Warsaw, 04-141, Poland
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Zabrze, 41-800, Poland
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Belgrade, 11000, Serbia
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Kragujevac, 34 000, Serbia
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Chernihiv, 14001, Ukraine
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Chernihiv, 14029, Ukraine
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Ivano-Frankivsk, 76008, Ukraine
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Ivano-Frankivsk, 76018, Ukraine
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Ivano-Frankivsk, 76493, Ukraine
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Kyiv, 2000, Ukraine
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Kyiv, 2091, Ukraine
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Kyiv, 3037, Ukraine
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Kyiv, 3110, Ukraine
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Kyiv, 4050, Ukraine
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Kyiv, 4211, Ukraine
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Lviv, 79010, Ukraine
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Lviv, 79029, Ukraine
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Odesa, 65009, Ukraine
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Poltava, 36011, Ukraine
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Ternopil, 46014, Ukraine
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Uzhhorod, 88018, Ukraine
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Vinnytsia, 21001, Ukraine
    Recruiting
  • TG Therapeutics Investigational Trial Site
    Vinnytsia, 21009, Ukraine
    Recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

2 registry updates since Sep 25, 2026
Sites
6 sites added, 1 site removed
Show 6 added (3 Poland, 2 Georgia, 1 Bosnia and Herzegovina)
  • TG Therapeutics Investigational Trial Site · Mostar, Bosnia and Herzegovina
  • TG Therapeutics Investigational Trial Site · Rustavi, Georgia
  • TG Therapeutics Investigational Trial Site · Tbilisi, Georgia
  • TG Therapeutics Investigational Trial Site · Krakow, Poland
  • TG Therapeutics Investigational Trial Site · Olsztyn, Poland
  • TG Therapeutics Investigational Trial Site · Zabrze, Poland
Show 1 removed
  • TG Therapeutics Investigational Trial Site · Tbilisi, Ukraine
across 2 updates, Oct 26, 2026 – Oct 29, 2026
Show all 2 updates
  1. Oct 29, 2026
    1 site removed
    Show 1 removed
    • TG Therapeutics Investigational Trial Site · Tbilisi, Ukraine
  2. Oct 26, 2026
    6 sites added
    Show 6 added (3 Poland, 2 Georgia, 1 Bosnia and Herzegovina)
    • TG Therapeutics Investigational Trial Site · Mostar, Bosnia and Herzegovina
    • TG Therapeutics Investigational Trial Site · Rustavi, Georgia
    • TG Therapeutics Investigational Trial Site · Tbilisi, Georgia
    • TG Therapeutics Investigational Trial Site · Krakow, Poland
    • TG Therapeutics Investigational Trial Site · Olsztyn, Poland
    • TG Therapeutics Investigational Trial Site · Zabrze, Poland
    + 1 other change: verification date

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT07503873
Responsible party
Sponsor
First posted
Mar 31, 2026
Start date
Apr 1, 2026
Primary completion
Jul 31, 2027 (estimated)
Completion
May 30, 2029 (estimated)
Last update
Oct 29, 2026

Study contacts

TG Therapeutics Clinical Support Team
Contact
clinicalsupport@tgtxinc.com
1-877-575-8489

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

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Studies of the drug tested here: Ublituximab

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