Over the past fifteen years, Dr. Sokol's clinical and laboratory work has been focused on T-cell lymphomas and leukemias and rare lymphoproliferative and histiocytic disorders including Castleman disease, Langerhans Cell Histiocytosis, Hemophagocytic LymphoHistiocytosis, Rosai-Dorfman Disease, etc.  He has participated in numerous clinical trials for T cell malignancies including pivotal studies with romidepsin and mogamulizumab. He also led clinical research in T-cell and NK-cell large granular lymphocytic leukemia (LGL). Dr. Sokol has been the Co-Director of the Cutaneous Lymphoma Multidisciplinary Clinic for over 15 years. This clinic is the largest referral center for patients with cutaneous T cell lymphoma (CTCL) in the southeastern U.S. Moffitt's LGL Center belongs among the three largest referral centers for this disease nationally. Dr. Sokol's clinical and laboratory research in the above field is supported with numerous publications in top ranked hematology journals. Dr. Sokol collaborates on clinical and laboratory investigation nationally and internationally. In his role of the Director of hematology/oncology fellowship program he has trained and mentored numerous young physicians in the field of malignant hematology.