Mosunetuzumab (Lunsumio)
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Mechanism of action
From the NCI Drug Dictionary: A bispecific, humanized monoclonal antibody with potential antineoplastic activity. Anti-CD20/CD3 bispecific monoclonal antibody BTCT4465A contains two antigen-recognition sites: one for human CD3, a T-cell surface antigen, and one for human CD20, a tumor-associated antigen (TAA) that is exclusively expressed on B cells during most stages of B-cell development and is often overexpressed in B-cell malignancies. Upon administration, BTCT4465A binds to both T cells and CD20-expressing tumor B cells; this cross-links T cells to tumor cells, and may result in a potent cytotoxic T-lymphocyte (CTL) response against CD20-expressing tumor B cells.
Diseases for which it is used
History of changes in FDA indication
- 2022-12-22: Initial approval for adults with relapsed or refractory follicular lymphoma after two or more lines of systemic therapy. (Based on GO29781)
History of changes in EMA indication
- 2022-06-03: Initial conditional authorization as monotherapy for the treatment of adult patients with relapsed or refractory follicular lymphoma (FL) who have received at least two prior systemic therapies.
Also known as
- Code names: BTCT4465A, RG7828
- Generic name: mosunetuzumab-axgb
- Brand name: Lunsumio