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(A) Progression-free survival based on 4-week magnetic resonance imaging (MRI) response (Macdonald criteria). Patients with partial response (PR; top curve) versus stable disease (SD; bottom curve). Log-rank test (two-sided) P = .07. (B) Progression-free survival based on 4-week MRI response (Levin criteria). Patients with PR (top curve) versus SD (bottom curve). Log-rank test (two-sided) P = .03.
