1 Prostate Cancer Research Group, Centre for Molecular Medicine (Norway), University of Oslo and Oslo University Hospitals, Oslo, Norway; Department of Molecular Oncology, Institute for Cancer Research, Oslo University Hospitals-Radium Hospital, Oslo, Norway; Cancer Research UK Cambridge Institute and Department of Oncology, University of Cambridge, Cambridge, UK; FASTMAN Movember Centre of Excellence, Queens University, Belfast, UK. Electronic address: ian.mills@ncmm.uio.no.