SOHO was established in 2012 with aims to promote worldwide research, education, prevention, clinical studies and optimal patient care in all aspects of hematologic malignancies. Since that time, SOHO has grown from a membership base of 400 to more than 5,000 in 2021. Organized by its founders and world class committees, SOHO is the only society specific to this field. The SOHO annual meeting program focuses on cutting-edge advances and practical clinical applications, with special emphasis on novel biological and therapeutic approaches, for patients with hematologic malignancies. In addition, the presenters are a multidisciplinary group of internationally recognized experts that represent the spectrum of these diseases. The SOHO Annual Meeting mobile app contains the scientific program, speaker listing, copies of presenters’ slides, abstracts, posters, sponsor and supporter listings and other helpful resources for those interested in the field of hematologic oncology. Annual meeting topics include: • Acute Lymphoblastic Leukemia • Acute Myeloid Leukemia • Chronic Lymphocytic Leukemia • Chronic Myeloid Leukemia • Hodgkin Lymphoma • T-Cell Lymphoma • Mantle Cell Lymphoma • Aggressive B-Cell Lymphoma • Indolent B-Cell Lymphoma • Myelodysplastic Syndromes • Myeloproliferative Neoplasms • Multiple Myeloma • Cellular Therapy We would like to thank all SOHO members, attendees and industry partners whose contributions and participation have been essential to the success of the society.