An author's reply to the editorial 'Torque Teno virus load as a surrogate marker for the net state of immunosuppression: The beneficial side of the virome'.

: We are grateful for the editorial by Fernandez-Ruiz (1), highlighting the value of Torque Teno virus (TTV) quantification for risk stratification of graft rejection and infection after kidney transplantation. However, we would like to correct some details concerning timing of TTV quantification and biopsies in our trial, comment on implication of the trial results on TTV replication control, and give an update on TTV standardization.