He was the President of the Brazilian Society of Hematology and Hemotherapy (SBHH) from 2004 to 2009. He was the first president of the Brazilian Association of Hematology, Hemotherapy, and Cellular Therapy (ABHH), an entity resulting from the merging of two previous entities (the Brazilian Society of Hematology and Hemotherapy and the Brazilian College of Hematology). He is the current ABHH Director of International Relations. He is a member of several medical societies, such as ABHH, AIBE, the Brazilian Bone Marrow Transplant Association, ASH, and EHA. He was a member of the Technic Committee of Hematology at the Federal Conseil of Medicine (CFM) from 2011 to 2019. He belongs to the Scientific Counsel of the Brazilian National Cancer Institute (INCA). He is a member of the International Committee of the International Workshop of CLL (IWCLL). He is currently the President of the Italian-Brazilian Society of Hematology (AIBE). He was the president of two previous LAG-CLL meetings held in Brazil. He is one of the organizers of the 5th Latin America Group of CLL (LAG-CLL), which joined with IWCLL (Oct/2024). He has experience in Medicine, acting mainly on the following issues: lymphomas, CLL, PTCL, lymphoma epidemiology, virus and lymphomas, and treatment of lymphoproliferative diseases in low-income countries. He has 172 published articles (Peer-reviewed journals) and 28 book chapters. He was the former editor-chief of the Brazilian Journal of Hematology, Hemotherapy, and Cellular Therapy and is currently the Associated Editor. He is also an ad hoc revisor of Blood Journal.