BCR and BK-virus nephropathy: To further investigate the similarities and differences in BCR repertoire in renal allografts with TCMR and ABMR, we employed another renal transplantation cohort (GSE232825) with 17 acute TCMR, 7 acute ABMR (aABMR), 17 chronic acute ABMR (caABMR), and 18 no‐rejection renal allograft biopsies (excluding mixed rejection, BK virus nephropathy, and other diagnoses).