Oussama Abla, MD
The Hospital for Sick Children 
Toronto, ON Canada

Dr Oussama Abla is a Lebanese native full Professor of Pediatrics at the University of Toronto and a pediatric oncologist at the Hospital for sick children in Toronto, Canada. His main clinical and research interests are focused on childhood Langerhans cell Histiocytosis (LCH), Rosai-Dorfman disease (RDD) and other rare histiocytic disorders, as well as childhood acute promyelocytic leukemia (APL) and rare lymphomas. He is the Principal Investigator of the Histiocyte Society- International Rare Histiocytic Disorders Registry (IRHDR) and Chair of the Rare Histiocytic Disorders Steering Committee since 2013. He has served on the Education Committee of the Histiocyte Society for two terms, and is currently a member of the Medical and Scientific Advisory Board of the Histiocytosis Association. Oussama has participated in the design of the Histiocyte Society LCH-IV International Trial of which is the Canadian national coordinator. In addition, he is one of the founding members of the North American Histiocytoses-NACHO network, and local Co-Investigator on many of the NACHO studies. He is the Co-Editor of the “Histiocytic Disorders” textbook, the “Acute Promyelocytic Leukemia: A Clinical Guide” textbook and the “Non-Hodgkin’s Lymphoma in Childhood and Adolescence” textbook. He is the founder and Co-Chair of the Asian and Middle Eastern (AME) Histiocytosis Network. Finally, Oussama has authored 105 research papers and book chapters which are mostly focused on histiocytic disorders, childhood leukemias & rare lymphomas.

About the Society

The Histiocyte Society is a nonprofit organization of more than 200 physicians and scientists from around the world committed to improving the lives of patients with histiocytic disorders by conducting clinical and laboratory research into the causes and treatment of this disease.

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