O Juan1, N Yousaf2, S Popat3. 1. Department of Medical Oncology, University Hospital La Fe, Valencia, Spain; Lung Unit, Royal Marsden Hospital, London, UK. 2. Lung Unit, Royal Marsden Hospital, London, UK. 3. Lung Unit, Royal Marsden Hospital, London, UK; National Heart & Lung Institute, Faculty of Medicine, Imperial College London, London, UK; The Institute of Cancer Research, London, UK. Electronic address: sanjay.popat@rmh.nhs.uk.