1430PCell-free circulating tumour DNA (ctDNA) in the management of patients with non-biopsiable advanced non-small cell lung cancer (NSCLC). (23rd October 2018) - Kushnir, M; Winter, H; Murias, C; Bains, P; Abbosh, C Z; Papadatos-Pastos, D; Newsome-Davis, T; Ahmed, T; Swanton, C; Forster, M D; Moore, D; Bennett, P; et al.