Dr Alexandre Loupy is a 36-year-old Nephrologist at the Department of Nephrology and Kidney Transplantation at Necker Hospital in Paris, France. He started his fellowship in November 2011 and is now part of the department as an associate professor at Necker Hospital. He defended his M.D in 2008 and obtained the Resident Award of Paris Hospitals. He defended his PhD in basic science in 2011 and and obtained a phD in biostatistics in 2014. His research interest focuses on antibody mediated rejection of kidney allografts and the relationship with graft histological lesions, immune mediated vascular aging and allograft outcome. Dr Loupy has recently developed a populational approach of transplantation with new methodological tools that are used for risk stratification. This new populational approach of extremely well phenotyped cohorts has been extended to hearts, lung transplants Dr Loupy is involved in the French Society of Transplantation and the Banff Conference Scientific Committee. He has also built strong international collaborations with worldwide reference centers including the Alberta Transplant Applied Genomic Center, Edmonton, Canada, The University of Pittsburgh, USA and the Cedars Sinai Comprehensive Transplant Center, Los Angeles, USA.