K	Kidney
IQR	inter-quartile range
ITA	Islet transplant alone
ISS	Istituto Superiore di Sanità
LIPS	luciferase immunoprecipitation system
OD	Odd ratio
PA	Pancreas alone
PK	Pancreas–kidney
RBD	Receptor binding domain
RT-PCR	reverse transcriptase-polymerase chain reaction
SARS-CoV-2	severe acute respiratory syndrome coronavirus 2
SOT	Solid organ transplantation