1 Department of Nephrology and Immunology, Institut de Transplantation Urologie Néphrologie (ITUN), Nantes, France.
2 Department of Pathology, Centre Hospitalier Universitaire (CHU) Nantes, Nantes, France.
3 Department of Nephrology and Immunology, Institut de Transplantation Urologie Néphrologie (ITUN), Nantes, France. Electronic address: fadi.fakhouri@univ-nantes.fr.