Dr David O’Connor

Consultant Paediatric Haematologist


Dr David O'Connor is a consultant in paediatric haematology responsible for the daily care of children with malignant an non-malignant haematological disorders. He has particular expertise in all forms of childhood leukaemia. 

He completed a PhD at Imperial College London in 2015 investigating the molecular causes of leukaemia and has published a number of high impact papers. Dr O' Connor combines his clinic work with ongoing research activities at the University College London Cancer Institue. He is a Cancer Research UK funded clinician scientist and leads research aiming to identify novel effective therapies for the treatment of high-risk leukaemia. 


  • Acute lymphoblastic leukaemia 
  • Acute myeloid leukaemia 
  • Bone Marrow Failure 
  • MBChB 2004
  • MRCPCH 2007
  • FRCPath 2011
  • PhD (Imperial College London) 2015

Dr O'Conner leads a research programme at the University College London Cancer Institute which focuses on the identification of genetic drivers of high-risk leukaemias. The appreciation of these molecular mechanisms will lead to the development of novel agents to overcome treatment resistance, improving outcomes in children with leukaemia. 

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