Therapeutic CD20-antibody from the original Mabthera® commercial drug targeting the CD20-antigen, also referred to as Mabthera® or rituximab antibody. Research-relevant quantities are available as licence-free consumable in aliquoted or diluted variant. Therapeutic monoclonal antibodies can be used from researchers in in vitro and in vivo experiments, biosimilar developers can order different batches at the same time.
What our clients say
”Evidentic can supply different batches of reference products for precilinical research.The quick access to the on-stock batches allows for adhoc ordering, keeps costs down and makes a headstart possible!”
“Evidentic is a new source of cost-efficient therapeutic mAbs for our immonassays. And easy to order!”
“We develop innovative and biosimilar mAbs for a global market. Evidentic’s aRMPs are a great source of cost-efficient reference products for our research and development program.”
“Evidentic gives rapid access to originator biologics and different batches. For biosimilar developers and regulators, it will shorten the time to gauge the analytical acceptance range for multiple CQAs of biotherapeutics.”
Rituximab / Mabthera
|API type||Rituximab is a genetically engineered chimeric mouse/human monoclonal antibody representing a glycosylated immunoglobulin with human IgG1 constant regions and murine light-chain and heavy-chain variable region sequences. The antibody is produced by mammalian (Chinese hamster ovary) cell suspension culture and purified by affinity chromatography and ion exchange, including specific viral inactivation and removal procedures.
|Pharmacotherapeutic group||Antineoplastic agents, monoclonal antibodies
|Target of antibody||CD20; Synonyms: B1, Bp35, CVID5, LEU-16, MS4A2, S7, AA960661, Cd20, Ly-44, Ms4a2, MS4A1, bp35, cd20, ms4a2, leu-16, ms4a4c, cd20-like
|Short description||Rituximab binds specifically to the transmembrane antigen, CD20, a non-glycosylated phosphoprotein, located on pre-B and mature B lymphocytes. The antigen is expressed on >95 % of all B cell non-Hodgkin’s lymphomas. CD20 is found on both normal and malignant B cells, but not on haematopoietic stem cells, pro-B cells, normal plasma cells or other normal tissue. This antigen does not internalise upon antibody binding and is not shed from the cell surface. CD20 does not circulate in the plasma as a free antigen and, thus, does not compete for antibody binding.
(Mechanism of action; Source EMA document)
|The Fab domain of rituximab binds to the CD20 antigen on B lymphocytes and the Fc domain can recruit immune effector functions to mediate B cell lysis. Possible mechanisms of effector-mediated cell lysis include complement-dependent cytotoxicity (CDC) resulting from C1q binding, and antibody-dependent cellular cytotoxicity (ADCC) mediated by one or more of the Fcγ receptors on the
surface of granulocytes, macrophages and NK cells. Rituximab binding to CD 20 antigen on B lymphocytes has also been demonstrated to induce cell death via apoptosis.
Peripheral B cell counts declined below normal following completion of the first dose of MabThera. In patients treated for haematological malignancies, B cell recovery began within 6 months of treatment and generally returned to normal levels within 12 months after completion of therapy, although in some patients this may take longer (up to a median recovery time of 23 months post-induction therapy). In rheumatoid arthritis patients, immediate depletion of B cells in the peripheral blood was observed following two infusions of 1000 mg MabThera separated by a 14 day interval. Peripheral blood B cell counts begin to increase from week 24 and evidence for repopulation is observed in the majority of patients by week 40, whether MabThera was administered as monotherapy or in combination with methotrexate. A small proportion of patients had prolonged peripheral B cell depletion lasting 2 years or more after their last dose of MabThera. In patients with granulomatosis with polyangiitis or microscopic polyangiitis, the number of peripheral blood B cells decreased to <10cells/μL after two weekly infusions of rituximab 375 mg/m2, and remained at that level in most patients up to the 6 month timepoint. The majority of patients (81%) showed signs of B cell return,
with counts >10 cells/μL by month 12, increasing to 87% of patients by month 18.
|Pharmacodynamic properties (Pharmacodynamic effects; Source EMA document)|
|Original license holder|
|Marketing authorisation numbers||EU/1/98/067/001 - 003
|Marketing authorisation holder||Roche Registration Limited
6 Falcon Way
Welwyn Garden City
|Name of the manufacturer of the biological active substance||Genentech Inc.
1000 New Horizons Way
Vacaville, CA 95688
1 Antibody Way
Oceanside, CA 92056 5802
|Name and address of the manufacturer(s) responsible for batch release||Roche Pharma AG
|Max shelf life||30 months
|Storage conditions||2°C – 8°C
|List of excipients||Recombinant human hyaluronidase (rHuPH20)
L-histidine hydrochloride monohydrate
Water for injections