SP142 immunohistochemistry (IHC) PD-L1 inter- and intra-pathologist agreement in triple negative breast carcinoma (TNBC)

J-M Pang, B Castles, DJ Byrne, P Button, S Lakhani, V Sivasubramaniam, W Cooper, J Armes, E Millar, W Raymond, S Roberts-Thomson, B Kumar, ML Burr, C Selinger, K Harvey, C Chan, J Beith, SA O'Toole, SB Fox