Dr Hasserjian received his MD from Harvard in 1990 and trained in Anatomic Pathology and Hematopathology at Brigham and Women's Hospital. His research interests are in the discovery of pathologic and genetic features associated with the biologic behavior of myeloid and lymphoid neoplasms. Dr Hasserjian is an author of over 100 peer-reviewed publications and numerous review articles and chapters, and he is a Senior Reviewer for the update to the 4th edition of the WHO Classification of Myeloid Neoplasms. He has lectured on the practical diagnosis of lymphomas, reactive lymphoid proliferations, and bone marrow disorders in numerous courses and international pathology meetings across North America, Europe, and Asia.