CXCR5-targeting ADC with KSPi payload showed high potency and superiority to other B-cell-targeted ADCs in vitro on a broad range of lymphoma cell lines. VIP924 with a novel legumain-cleavable linker showed activity in in vivo PDX models from lymphoma patients. Due to the high CXCR5 expression found in relapsed DLBCL patients, VIP924 may bring promising new treatment options for previously treated patients with lymphoma.