Dr. Kate Cwynarski is a Haem-Oncologist specialising in Lymphoma and CLL at University College London Hospital, London, UK, and Honorary Associate Professor at UCL. She trained at King's College, Hammersmith Hospital and Royal Free Hospital, London UK and received her MRC-funded PhD in immunology at Imperial College, London, UK. Her sub-specialist interests include Central Nervous System (CNS) Lymphoma, T-cell Lymphomas, HIV-related, PTLD and high-grade B‑cell lymphomas. She is involved in CAR-T cell trials for refractory DLBCL and T-cell lymphomas. She leads the UK T cell Lymphoma Group and previously lead the UK CNSL Group and British Society for Haematology (BSH) Lymphoma Specialist Interest Group. She is involved in many clinical trials and has lead and co-authored BSH, EHA and BHIVA guidelines for the management of SCNSL, PCNSL, CNS prophylaxis, T cell lymphoma and primary medistinal B cell lymphoma.