PFS following Axi-cel and Tisa-cel according to BT response. (A) PFS after Axi-Cel administration: comparing BT responders vs nonresponders: HR (response vs no response): 0.68 (0.45-1.03), P = .071. (B) PFS after Tisa-Cel administration: comparing BT responders vs nonresponders: HR (response vs no response): 0.22 (0.11-0.44), P = <.001.