278 Preclinical development of LYL119, a ROR1-targeted CAR T-cell product incorporating four novel T-cell reprogramming technologies to overcome barriers to effective cell therapy... by Rachel C Lynn, Purnima Sundar, Omar Ali, Christina Cheung, Shobha Potluri, Meritxell Galindo Casas, Candace Sims, Viola C Lam, Aileen Li, Jessica Barragan, Jessica Briones, Esha Afreen, Grant Vavra, Jia Lu, Rowena Martinez, Christina Ta, Eskedar Nigatu, Alexander S Cheung