Prof. Dr. Jerzy Sieńko graduated from his medical studies in 1994 at the Faculty of Medicine of the Pomeranian Medical University in Szczecin. From 1995 to 2000, he worked as an assistant in the Department of Surgery of the Independent Public Provincial Hospital in Szczecin. In 1997, he obtained first-degree specialization in general surgery. Since 2000, he has been employed at the Department of General and Transplant Surgery of the Medical University of Warsaw. He has been a professor since 2015. In 2001, he obtained a second-degree specialization in general surgery, in 2005 in clinical transplantology, and in 2015 in oncological surgery.  In 2020, at the request of the Central Commission for Degrees and Titles, he was nominated to be a professor by the President of the Republic of Poland. Since 2001, he has been a member of the Polish Transplantation Society, and since 2011, he has been a member of the State Examination Committee in the field of general surgery and clinical transplantology. In 2015, he was appointed to the National Transplantation Council.  His research interests are focused on transplantology and mainly concern the search for factors determining the fate of a transplanted kidney.