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Kaplan-Meier estimate of (A) PFS for all patients, n = 280 and (B) OS for all patients, n = 280. OS, overall survival; PFS, progression-free survival; R-CHOP, rituximab plus cyclophosphamide, doxorubicin, vincristine, and prednisone; R2CHOP, lenalidomide plus R-CHOP.
