Dr Claire Dearden

Consultant Haematologist BSc MBBS MD FRCP FRCPath

Specialism: Haemato-oncology

Available at: Chelsea

Special interests:

  • lymphoid leukaemias (CLL, rare B and T-cell leukaemias)
  • low grade lymphoma
  • specialist haematological malignancy diagnostics
  • novel targeted treatments (trials)


Dr Claire Dearden has both a private and an NHS practice at The Royal Marsden. Dr Dearden is Consultant Haematologist and the Clinical Director of the Haemato-Oncology Department and of the Specialist Haematological Malignancy Diagnostic Service at The Royal Marsden Biomedical Research Centre in London, UK. She trained in haematology 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 up her current position on his retirement.

Her research interests focus on mature B- and T-cell malignancies, including chronic lymphocytic leukaemia, hairy cell leukaemia, and T-cell prolymphocytic leukaemia. She has been involved in clinical research studies using purine analogs, monoclonal antibodies, stem cell transplantation and most recently a number of novel therapies, including small molecule inhibitors, in a range of lymphoproliferative diseases.

Dr Dearden is a member of numerous societies, including the British and American Societies of Haematology, the NCRI CLL Trials group and is on the executive board of the UK CLL Forum and the International Hairy Cell Leukaemia Foundation. She chaired the group for the production of the BCSH guidelines for Mature T and NK malignancies. 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. 

Clinical units