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Substance Name: Ocrelizumab [USAN:INN:JAN]
RN: 637334-45-3


  • A humanized anti-CD20 antibody.

    NCI: A Fc-modified, humanized monoclonal antibody directed against the B-cell CD20 cell surface antigen, with immunosuppressive activity. Ocrelizumab binds to CD20 on the surfaces of B-cells, triggering complement-dependent cell lysis (CDCL) and antibody-dependent cell-mediated cytotoxicity (ADCC) of B-cells overexpressing CD20. The CD20 antigen, a non-glycosylated cell surface phosphoprotein that acts as a calcium ion channel, is found on over 90% of B-cells, B-cell lymphomas, and other lymphoid tumor cells of B-cell origin; it plays an important role in B-cell functioning. (NCI Thesaurus)

Molecular Formula

  • Unspecified

Classification Codes

  • Immunologic Factors
  • Treatment of Rheumatoid Arthritis

Names and Synonyms

Name of Substance

  • Ocrelizumab
  • Ocrelizumab [USAN:INN:JAN]


  • Monoclonal antibody PRO70769
  • Ocrelizumab
  • Ocrevus
  • PR070769
  • PRO-70769
  • PRO70769
  • R-1594
  • rhuMAb 2H7

Registry Numbers

CAS Registry Number

  • 637334-45-3


  • A10SJL62JY

System Generated Number

  • 0637334453