Lyell Immunopharma Initiates First Head-to-Head Phase 3 CAR T-Cell Trial for Aggressive Large B-Cell Lymphoma on February 17, 2026 B-Cell Lymphomas Chimeric Antigen Receptor T-Cell Therapy H2H trial Immunopharma Phase 3 clinical trial PiNACLE Ronde-cel rondecabtagene autoleucel Toxic Epidermal Necrolysis +