Coronavirus (COVID-19): visiting The Royal Marsden suspended

Coronavirus (COVID-19) latest: Visiting The Royal Marsden is still suspended, but we want to reassure our patients, their families and anyone worried about cancer during this difficult time that we are still delivering treatment - the hospital is open. Please see more information here about how we are keeping everyone safe.

Dr Claire Dearden

Consultant Haematologist BSc MBBS MD FRCP FRCPath

Specialism: Haemato-oncology

Available at: Chelsea

Special interests:

  • Chronic lymphocytic leukaemia
  • Rare B and T cell leukaemias eg Hairy cell leukaemia, B- and T- cell prolymphocytic leukaemia, T cell large granular lymphocyte leukaemia
  • Non Hodgkin Lymphoma


Claire Dearden is Consultant Haematologist at the Royal Marsden Hospital in London. She trained in hematology at the Hammersmith, Royal Marsden and St George's Hospitals in London and joined Professor Daniel Catovsky's group to undertake research into lymphoid malignancy, taking over the lead of this group on his retirement. Her research interests focus on mature B- and T-cell malignancies, including chronic lymphocytic leukemia, hairy cell leukemia, and T-cell prolymphocytic leukemia.

She has been involved in clinical research studies using purine analogs, monoclonal antibodies, novel targeted therapies and stem cell transplantation in a range of lympho-proliferative diseases. She is a member of numerous societies, including the British and American Societies of Hematology, the NCRI CLL Trials group and is on the executive board of the International Hairy Cell Leukemia Foundation and the Society of Hematology Oncology (SOHO).

She is an editor of Blood Advances. She has authored or co-authored many book chapters and journal articles in the field of haematologic malignancy, including in The British Journal of Haematology, Blood, The Lancet, The Journal of Clinical Oncology, The New England Journal of Medicine and Nature Genetics. 

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