TABLE 1.

Abnormal investigations in patients with normal dd-cfDNA

BK viremia	Number of abnormal results (n = 51)
Low-viral load	12 (23)
High-viral load	12 (23)
CMV viremia	4 (8)
UTI	4 (8)
Biopsy
TCMR	1 (2)
AMR	4 (8)
Recurrent FSGS	2 (4)
BK nephropathy	4 (8)
IF/TA	6 (12)
Non-DSA AMR	1 (2)
Focal C4d deposition	1 (2)

Data presented as n (%).

AMR, antibody-mediated rejection; CMV, cytomegalovirus; dd-cfDNA, donor-derived cell-free DNA; DSA, donor-specific antibody; FSGS, focal segmental glomerulosclerosis; IF/TA, interstitial fibrosis and tubular atrophy; TCMR, T cell–mediated rejection; UTI, urinary tract infection.