Dr. Maciej Machaczka (MD, PhD) is Senior Consultant/Senior Attending physician at the Hematology Center Karolinska, Karolinska University Hospital in Stockholm, Sweden. He graduated in Medicine in 1993 from the Collegium Medicum of the Jagiellonian University in Krakow, Poland. In 1999, Dr. Machaczka was a visiting physician at the Fred Hutchinson Cancer Research Center (FHCRC) in Seattle, U.S.A. He completed his PhD thesis in 2000 based on studies on P-glycoprotein mediated multidrug resistance in adults with de novo acute myeloid leukemia (AML). His special interest areas include hematopoietic stem cell transplantation, hemophagocytic lymphohistiocytosis (HLH) in adults, AML and Gaucher disease.