Ublituximab

FDA Drug Information • Also known as: Briumvi

Brand Names: Briumvi
Dosage Form: SOLUTION
Product Type: DRUG FOR FURTHER PROCESSING

Description

11 DESCRIPTION Ublituximab-xiiy is a recombinant chimeric monoclonal IgG1 antibody with reduced fucose content directed against CD20-expressing B-cells. The molecular weight of the antibody is approximately 147 kDa. BRIUMVI (ublituximab-xiiy) injection for intravenous infusion is a sterile, clear to opalescent, colorless to slightly yellow, preservative-free solution. Each mL of solution contains 25 mg ublituximab-xiiy, 0.4 mg hydrochloric acid, 0.7 mg polysorbate 80, 9.0 mg sodium chloride, 6.4 mg sodium citrate, and Water for Injection, USP. The pH is 6.5.

What Is Ublituximab Used For?

1 INDICATIONS AND USAGE BRIUMVI is indicated for the treatment of relapsing forms of multiple sclerosis (MS), to include clinically isolated syndrome, relapsing-remitting disease, and active secondary progressive disease, in adults. BRIUMVI is a CD20-directed cytolytic antibody indicated for the treatment of relapsing forms of multiple sclerosis (MS), to include clinically isolated syndrome, relapsing-remitting disease, and active secondary progressive disease, in adults ( 1 , 14 ).

Dosage and Administration

2 DOSAGE AND ADMINISTRATION Before initiating BRIUMVI, screen for Hepatitis B virus (HBV) and obtain serum quantitative immunoglobulins, aminotransferases, alkaline phosphatase, and bilirubin ( 2.1 ). Pre-medicate with methylprednisolone (or an equivalent corticosteroid) and an antihistamine (e.g., diphenhydramine) prior to each infusion ( 2.2 ). Administer BRIUMVI by intravenous infusion. First Infusion: 150 mg intravenous infusion ( 2.3 ) Second Infusion: 450 mg intravenous infusion two weeks after the first infusion ( 2.3 ) Subsequent Infusions: 450 mg intravenous infusion 24 weeks after the first infusion and every 24 weeks thereafter ( 2.3 ) Must be diluted in 0.9% Sodium Chloride Injection, USP prior to administration ( 2.3 , 2.6 ). Monitor patients closely during and for at least one hour after the completion of the first two infusions. Post-infusion monitoring of subsequent infusions is at physician discretion unless infusion reaction and/or hypersensitivity has been observed ( 2.3 , 5.1 ). 2.1 Assessments Prior to First Dose of BRIUMVI Hepatitis B Virus Screening Prior to initiating BRIUMVI, perform Hepatitis B virus (HBV) screening. BRIUMVI is contraindicated in patients with active HBV confirmed by positive results for Hepatitis B surface antigen [HBsAg] and anti-HBV tests. For patients who are negative for HBsAg and positive for Hepatitis B core antibody [HBcAb+] or are carriers of HBV [HBsAg+], consult liver disease experts before starting and during treatment with BRIUMVI [see Warnings and Precautions (5.2) ] . Serum Immunoglobulins Prior to initiating BRIUMVI, perform testing for quantitative serum immunoglobulins [see Warnings and Precautions (5.4) ]. For patients with low serum immunoglobulins, consult immunology experts before initiating treatment with BRIUMVI. Vaccinations Because vaccination with live-attenuated or live vaccines is not recommended during treatment and after discontinuation until B-cell repletion, administer all immunizations according to immunization guidelines at least 4 weeks prior to initiation of BRIUMVI for live or live-attenuated vaccines and, whenever possible, at least 2 weeks prior to initiation of BRIUMVI for non-live vaccines [see Warnings and Precautions (5.2) and Clinical Pharmacology (12.2) ] . Liver Function Tests Prior to initiating BRIUMVI, obtain serum aminotransferases (alanine aminotransferase [ALT] and aspartate aminotransferase [AST]), alkaline phosphatase, and bilirubin levels [see Warnings and Precautions (5.5) ] . 2.2 Assessment and Premedication Before Every Infusion Infection Assessment Prior to every infusion of BRIUMVI, determine whether there is an active infection. In case of active infection, delay infusion of BRIUMVI until the infection resolves [see Warnings and Precautions (5.2) ] . Recommended Premedication Pre-medicate with 100 mg of methylprednisolone administered intravenously (or an equivalent oral dosage or equivalent corticosteroid) approximately 30 minutes prior to...

Side Effects (Adverse Reactions)

6 ADVERSE REACTIONS The following serious adverse reactions are discussed in greater detail in other sections of the labeling: Infusion Reactions [see Warnings and Precautions (5.1) ] Infections [see Warnings and Precautions (5.2) ] Reduction in Immunoglobulins [see Warnings and Precautions (5.4) ] Liver Injury [see Warnings and Precautions (5.5) ] The most common adverse reactions (≥10%) were infusion reactions and upper respiratory tract infections ( 6.1 ). To report SUSPECTED ADVERSE REACTIONS, contact TG Therapeutics at 1-877-848-9462 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in clinical practice. In active-controlled clinical trials (Study 1 and Study 2), 545 patients with RMS received BRIUMVI [see Clinical Studies (14) ]. The most common adverse reactions in RMS trials (incidence of at least 10%) were infusion reactions and upper respiratory tract infections. Table 2 summarizes the adverse reactions that occurred in RMS trials (Study 1 and Study 2). The most common cause of discontinuation in patients treated with BRIUMVI was infection (1.3%). Table 2: Adverse Reactions in Adult Patients with RMS with an Incidence of at least 5% for BRIUMVI and Higher than Teriflunomide from Study 1 and Study 2 BRIUMVI 450 mg IV The first dose of BRIUMVI was given as an intravenous (IV) infusion of 150 mg. The second dose was given as an IV infusion of 450 mg two weeks after the first infusion. Teriflunomide 14 mg PO Adverse Reactions (N=545) % (N=548) % Infusion reactions 48 12 Upper respiratory tract infections Includes the following: nasopharyngitis, upper respiratory tract infection, respiratory tract infection, respiratory tract infection viral, pharyngitis, rhinitis, sinusitis, acute sinusitis, tonsillitis, laryngitis, chronic sinusitis, viral pharyngitis, viral rhinitis, viral upper respiratory tract infection, chronic tonsillitis, pharyngitis streptococcal, sinusitis bacterial, and tonsillitis bacterial. 45 41 Lower respiratory tract infections Includes the following: bronchitis, pneumonia, tracheitis, tracheobronchitis, COVID-19 pneumonia, bronchitis bacterial, and pneumonia viral. 9 7 Herpes virus-associated infections Includes several related terms. 6 5 Pain in extremity 6 4 Insomnia 6 3 Fatigue 5 4 Infusion Reactions The incidence of infusion reactions was highest with the first infusion (43%), decreasing with subsequent infusions (10% with second, 8% with third infusion). Three (0.6%) patients treated with BRIUMVI reported serious infusion reactions. Most frequently reported symptoms (greater than 5%) included pyrexia, chills, headache, and influenza-like illness [see Warnings and Precautions (5.1) ] . Laboratory Abnormalities Decreased Immunoglobulins BRIUMVI decreased total immunoglobulins with the greatest decline seen in IgM levels. The proportion of BRIUMVI-treated patients at baseline reporting IgG, IgA, and IgM below the LLN was 6.3%, 0.6%, and 1.1%, respectively. Following treatment, the proportion of BRIUMVI-treated patients reporting IgG, IgA, and IgM below the LLN at 96 weeks was 6.5%, 2.4%, and 20.9%, respectively. Decreased Neutrophil Levels In Studies 1 and 2, decreased neutrophil counts (

Drug Interactions

7 DRUG INTERACTIONS 7.1 Immunosuppressive or Immune-Modulating Therapies The concomitant usage of BRIUMVI with other immune-modulating or immunosuppressant drugs, including immunosuppressant doses of corticosteroids, may increase the risk of infection. Consider the risk of additive immune system effects when co-administering immunosuppressive therapies with BRIUMVI. When switching from therapies with immune effects, the duration and mechanism of action of these therapies should be taken into account because of potential additive immunosuppressive effects when initiating BRIUMVI.

Contraindications

4 CONTRAINDICATIONS BRIUMVI is contraindicated in patients with: Active HBV infection [see Dosage and Administration (2.1) and Warnings and Precautions (5.2) ] A history of life-threatening infusion reaction to BRIUMVI [see Warnings and Precautions (5.1) ] Active hepatitis B virus infection ( 4 ) History of life-threatening infusion reaction to BRIUMVI ( 4 )

Pregnancy and Breastfeeding

8.1 Pregnancy Pregnancy Exposure Registry There is a pregnancy exposure registry that monitors pregnancy outcomes in women exposed to BRIUMVI during pregnancy. Eligible patients are women who become pregnant either while taking BRIUMVI or within 6 months following their last dose of BRIUMVI. Physicians are encouraged to register patients and pregnant women are encouraged to register themselves by calling 1-877-411-4546 or visiting www.briumvipregnancyregistry.com. Risk Summary There are no data on the developmental risk associated with the use of BRIUMVI in pregnant women. Data from case reports of pregnancies occurring during clinical trials with BRIUMVI are insufficient to identify a drug-associated risk of major birth defects, miscarriage, or adverse maternal or fetal outcomes. Although there are no data on ublituximab-xiiy, monoclonal antibodies can be actively transported across the placenta, and BRIUMVI may cause immunosuppression in the in-utero exposed infant [see Clinical Considerations , Warnings and Precautions (5.2 , 5.3) , and Clinical Pharmacology (12.1 , 12.2) ]. In pregnant transgenic huCD20 mice, a pharmacologically relevant animal model, weekly intravenous administration of ublituximab-xiiy during organogenesis resulted in no adverse pregnancy or embryofetal outcomes (see Data ) . The estimated background risk of major birth defects and miscarriage for the indicated population is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively. Clinical Considerations Fetal/Neonatal Adverse Reactions Transport of endogenous IgG antibodies across the placenta increases as pregnancy progresses and peaks during the third trimester. There are no data on B-cell levels in human neonates following maternal exposure to BRIUMVI. However, transient...

How Supplied

16 HOW SUPPLIED/STORAGE AND HANDLING 16.1 How Supplied BRIUMVI (ublituximab-xiiy) injection is a sterile, clear to opalescent, colorless to slightly yellow, preservative-free solution for intravenous use supplied as a carton containing one 150 mg/6 mL (25 mg/mL) single-dose vial (NDC 73150-150-06). 16.2 Storage and Handling Store BRIUMVI vials refrigerated at 2°C to 8°C (36°F to 46°F) in the outer carton to protect from light. Do not freeze. Do not shake.

About This Information

This drug information is sourced from FDA-approved labeling via the openFDA database. It is intended for educational and reference purposes only. This is not medical advice. Always consult your healthcare provider before making decisions about medication. Drug information may be updated by the FDA; check with your pharmacist for the most current information.

What are side effects?

Side effects are unwanted reactions that can occur when taking a medication. They range from mild (headache, nausea) to severe (allergic reactions, organ damage). Not everyone experiences side effects, and severity varies. Report any concerning side effects to your doctor.

What are drug interactions?

Drug interactions occur when a medication is affected by another drug, food, or supplement. Interactions can make medications less effective or cause dangerous side effects. Always tell your doctor about all medications and supplements you take.