XmAb657
/ Xencor
- LARVOL DELTA
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September 15, 2025
XmAb657, a CD19 x CD3 T-Cell Engaging Bispecific Antibody for Autoimmune Disease
(ACR Convergence 2025)
- "XmAb657, a CD19 x CD3 bispecific antibody engineered for treatment of autoimmune disease, demonstrated potent in vitro activity and deep, durable depletion of circulating and tissue-resident B cells in cynomolgus monkeys after a single dose. Targeting CD19 may complement other B-lineage–directed approaches by extending depletion to a broader range of B cell subsets. These findings support the ongoing advancement of XmAb657 into first-in-human clinical studies."
Immunology • CD69 • IFNG • IL2RA
February 27, 2025
Upcoming Clinical Study Initiation Plans
(Businesswire)
- "XmAb657 (CD19 x CD3), a potent, extended half-life B-cell depleting bispecific T-cell engager for development in autoimmune disease. Xencor plans to initiate a first-in-human study in the second half of 2025; TL1A x IL23 Program: a bispecific antibody for dual targeting of important inflammatory pathways in autoimmune and inflammatory disease, while avoiding the complexities of dosing and formulary access for two separate TL1A and IL23 targeted drugs. Xencor anticipates selecting a lead candidate in 2025 and initiating first-in-human studies during 2026."
New trial • Pipeline update • Immunology • Inflammation
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