Ublituximab
Brand names: Briumvi
Ublituximab is an anti-CD20 monoclonal antibody given by intravenous infusion as a disease-modifying treatment for relapsing forms of multiple sclerosis.
Adult dose
Dose auto-extracted from US FDA prescribing information (openFDA / DailyMed) — cross-check; US labelling may differ from UK — not yet clinician-verified. Always confirm against the product SmPC and your local formulary before prescribing.
Contraindications
- Active hepatitis B virus (HBV) infection
- A history of life-threatening infusion reaction to ublituximab
Side effects
- Infusion reactions (most common, incidence ≥10%)
- Upper respiratory tract infections (most common, incidence ≥10%)
- Serious infections, including life-threatening and fatal infections — infection was the most common cause of discontinuation (1.3%)
- Reduction in immunoglobulins / prolonged hypogammaglobulinaemia
- Liver injury — clinically significant liver injury has occurred
Interactions
- Immunosuppressive or immune-modulating therapies, including immunosuppressant doses of corticosteroids — concomitant use may increase the risk of infection; consider the risk of additive immune system effects
- When switching from therapies with immune effects, take account of the duration and mechanism of action of those therapies because of potential additive immunosuppressive effects on initiation
- Live-attenuated or live vaccines are not recommended during treatment and after discontinuation until B-cell repletion
Clinical monograph
How it works
It binds CD20 on B lymphocytes and produces rapid B-cell depletion, largely through antibody-dependent cellular cytotoxicity, reducing the B-cell-driven inflammation that contributes to relapses and new lesions.
Prescribing in practice
- Infusion-related reactions are common, so infusions are given with premedication and under observation, particularly with the first dose.
- B-cell depletion increases infection risk and can cause hypogammaglobulinaemia; hepatitis B status should be checked and vaccinations brought up to date before starting.
- Live vaccines should be avoided during treatment and the depleted period afterwards.
Monitoring
Monitor for infusion reactions during and after administration, and watch for infections and immunoglobulin levels over the course of treatment.
Counselling the patient
- Report any fever, persistent cough or other signs of infection.
- Tell your clinician about any planned vaccinations, as live vaccines must be avoided.
Evidence & guidelines
Its efficacy in relapsing MS, including reduced relapse rates versus an oral comparator, was shown in the ULTIMATE I and II randomised trials.
Reference: NICE TA958; SmPC; Drug verified in RxNorm (NLM); confirm dosing against the manufacturer SPC (eMC). Verify against your local formulary and current prescribing references before prescribing. The structured dose values shown have been reviewed by a clinician. Monograph status: clinician-reviewed (2026-07-04).
Related
Curated clinical cross-links plus same-class fallbacks.
- Revised Original International Autoimmune Hepatitis Score (IAIHG) · Autoimmune Liver Disease
- Ho Index for Predicting Response to Medical Therapy in IBD · Inflammatory Bowel Disease
- Rh(D) Immune Globulin Dosage for Maternal-Fetal Haemorrhage · Haematology in Pregnancy
- AREDS Classification of Age-related Macular Degeneration · Macular Degeneration
- Diabetic Macular Oedema (DMO) Classification · Diabetic Retinopathy
- Retinopathy of Prematurity — International Classification (ICROP3) · Paediatric Retina
- Acute Stroke / TIA Assessment · NICE NG128; RCP Stroke Guidelines 2023
- Status Epilepticus (Adults) · NICE CG137; ESEM guidelines; RCP Neurology Guidelines
- Suspected Subarachnoid Haemorrhage · NICE NG228; RCEM 2023; AHA/ASA 2023
- Adult Head Injury · NICE NG232 (2023)
- Bell's Palsy / Facial Nerve Palsy · ENT UK 2017; AAN
- Vertigo Workup · ENT UK; NICE CKS