654 A phase I/II trial investigating safety and efficacy of autologous TAC01-HER2 in relapsed or refractory solid tumors by Marcus Butler, Daniel J Olson, Antonio Giordano, Ecaterina Dumbrava, Benjamin Schlechter, Maria Apostolopoulou, Mridula George, Brooke Pieke, Kara Moss, Deyaa Adib, Sam Saibil, Miriam Gavriliuc, Emily Lichtenstein, Jill Geisberger, D’Arcy Kirkwood, Salina Dang