PFS by CR status at 2-year landmark by protocol. Patients considered here were alive and progression-free at the 2-year landmark. Plateaus are seen in patients achieving CR and also in those with lesser responses prior to the 2-year landmark (A: TT1, B: TT2-Thal, C: TT2+Thal). (A) PFS by response at landmark. Landmarked 2 years from registration: TT1. (B) PFS by response at landmark. Landmarked 2 years from registration: TT2 - Thal. (C) PFS by response at landmark. Landmarked 2 years from registration: TT2 + Thal.