1308 Artificial intelligence (AI)-powered immune phenotyping based on programmed death ligand 1 (PD-L1) immunohistochemistry (IHC) in triple negative breast cancer (TNBC) oleh Chan-Young Ock, Seulki Kim, Siraj Ali, Soo Ick Cho, Gahee Park, Seunghwan Shin, Jeongun Ryu, Seonwook Park, Sangwon Shin, Taebum Lee, Juneyoung Ro, Aaron Valero, Biagio Brattoli, Changho Ahn