AbMR	antibody-mediated rejection
CMV	cytomegalovirus
dd-cfDNA	donor-derived circulating free DNA
EBV	Epstein–Barr virus
HBV	Hepatitis B virus
HCV	Hepatitis C virus
HSV	Herpes simplex virus
IQR	interquartile range
MPA	mycophenolic acid
KTx	kidney transplant recipients
TTV-load	Torque Teno virus load
VZV	Varicella zoster virus