''A total of 27 patients were enrolled in the phase 1a dose escalation and 13 patients in the phase 1b dose extension. IMA203 T cells were safe, and the MTD was not reached. Of the 41 patients receiving treatment (that is, who started lymphodepletion), severe cytokine release syndrome was observed in 4.9% (2/41), and severe neurotoxicity did not occur. In the 40 patients treated with IMA203, an overall response rate consisting of patients with unconfirmed or confirmed response (u/cORR) of 52.5% (21/40) and a cORR of 28.9% (11/38) was observed with a median duration of response of 4.4 months (range, 2.4–23.0, 95% confidence interval: 2.6–not reached) across multiple indications.''
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