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In the US, Ofatumumab (ofatumumab systemic) is a member of the drug class CD20 monoclonal antibodies and is used to treat Chronic Lymphocytic Leukemia.

US matches:



ATC (Anatomical Therapeutic Chemical Classification)


CAS registry number (Chemical Abstracts Service)


Chemical Formula


Molecular Weight


Therapeutic Categories

Antineoplastic agent

Anti-CD20 monoclonal antibody

Chemical Name

Immunoglobulin G1, anti-(human CD20 (antigen))(human monoclonal HuMax-CD20 heavy chain), disulfide with human monoclonal HuMax-CD20 kappa-chain, dimer (WHO )

Foreign Names

  • Ofatumumabum (Latin)
  • Ofatumumab (German)
  • Ofatumumab (French)
  • Ofatumumab (Spanish)

Generic Names

Brand Names

  • Arzerra
    Glaxo Group, Austria; Glaxo Group, Iceland; Glaxo Group, Lithuania; Glaxo Group, Poland; Glaxo Group, Romania; Glaxo Group Limited-GB, Italy; GlaxoSmithKline, Canada; GlaxoSmithKline, Czech Republic; GlaxoSmithKline, Germany; GlaxoSmithKline, Denmark; GlaxoSmithKline, Spain; GlaxoSmithKline, Finland; GlaxoSmithKline, Greece; GlaxoSmithKline, Croatia (Hrvatska); GlaxoSmithKline, Hungary; GlaxoSmithKline, Ireland; GlaxoSmithKline, Israel; GlaxoSmithKline, Japan; GlaxoSmithKline, Norway; GlaxoSmithKline, Sweden; GlaxoSmithKline, Singapore; GlaxoSmithKline, Slovakia; GlaxoSmithKline UK, United Kingdom; Novartis, France; Novartis, United States; Novartis Pharma, Switzerland; Wellcome Limited, Bosnia & Herzegowina


BANBritish Approved Name
ISInofficial Synonym
JANJapanese Accepted Name
OSOfficial Synonym
Rec.INNRecommended International Nonproprietary Name (World Health Organization)
USANUnited States Adopted Name

Further information on drug naming conventions: International Nonproprietary Names.

Important Notice: The international database is in BETA release. This means it is still under development and may contain inaccuracies. It is not intended as a substitute for the expertise and judgement of your physician, pharmacist or other healthcare professional. It should not be construed to indicate that the use of any medication in any country is safe, appropriate or effective for you. Consult with your healthcare professional before taking any medication.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.