Background：Iscalimab is a new, fully human, monoclonal antibody preventing cluster of differentiation 40 CD40 pathway signaling and activation of CD40+ cell types. In a recent multicenter, randomized control trial NCT02217410, with the primary endpoint of non-inferiority on the composite endpoint, iscalimab therapy showed non-inferiority on a composite clinical endpoint, improved renal function, reduced risk for new onset diabetes and similar safety compared with tacrolimus. The analysis presented at the ATC included patients from this study that underwent either routine biopsies or biopsies as part of a follow-up protocol. The data was reviewed and scored by a blinded pathologist using the established Banff criteria and CADI. A CADI of 1 or less was considered as 'normal renal histology'. The average CADI at final biopsy was 1.6 ±0.6 for iscalimab and 5.1 ±0.8 for tacrolimus.
