Table 3.

Summary of selected larger clinical trials of TFR relative to depth and duration of DMR

Clinical studyPatient no.TKI at time of cessationDepth of DMRDuration of DMRTKI restart criteriaTFR success (follow-up)
STIM140  100 Imatinib UMRD ≥2 yr Loss of MMR or ≥1-log increase in BCR-ABL1 38% (60 mo) 
TWISTER41  40 Imatinib UMRD ≥2 yr Loss of MMR or rising BCR-ABL1 on 2 consecutive tests 47.1% (24 mo) 
KID49  90 Imatinib UMRD ≥2 yr Loss of UMRD on 2 consecutive tests of MMR loss 58.5% (24 mo) 
STOP 2G-TKI44  60 Dasatinib or nilotinib UMRD ≥2 yr Loss of MMR 53.57% (48 mo) 
A-STIM42  80 Imatinib UMRD (occasional weakly positive samples also eligible) ≥2 yr Loss of MMR 61% (36 mo) 
ENESTFreedom43  190 First-line nilotinib MR4.5 ≥1 yr Loss of MMR 51.6% (48 wk) 
ENESTop47  126 Second-line nilotinib after imatinib MR4.5 ≥1 yr Loss of MMR or confirmed loss of MR4 53% (96 wk) 
ISAV 112 Imatinib MR4-MR4.5 ≥18 mo Loss of MMR 48.1% (21.6 mo) 
DADI38  63 Second-line dasatinib MR4 or 0.0069% (IS) ≥1 yr Loss of DMR 44% (36 mo) 
D-STOP50  54 Dasatinib MR4 ≥1 yr BCR-ABL1 > 0.0069% on 2 consecutive results 57% (24 mo) 
EURO-SKI39  755 Imatinib > nilotinib/dasatinib MR4 ≥1 yr Loss of MMR 50% (24 mo) 
Interim results       
 STIM2 (interim)53  124 Imatinib UMRD ≥2 yr Loss of MMR or ≥1-log increase in BCR-ABL1 59% (12 mo) 
 DASFREE (interim)54  84 Dasatinib (first or second line) MR4.5 ≥1 yr Loss of MMR 49% (12 mo) 
 DESTINY55  117 Imatinib > dasatinib/nilotinib MR4 ≥1 yr Loss of MMR 77% (24 mo) 
Clinical studyPatient no.TKI at time of cessationDepth of DMRDuration of DMRTKI restart criteriaTFR success (follow-up)
STIM140  100 Imatinib UMRD ≥2 yr Loss of MMR or ≥1-log increase in BCR-ABL1 38% (60 mo) 
TWISTER41  40 Imatinib UMRD ≥2 yr Loss of MMR or rising BCR-ABL1 on 2 consecutive tests 47.1% (24 mo) 
KID49  90 Imatinib UMRD ≥2 yr Loss of UMRD on 2 consecutive tests of MMR loss 58.5% (24 mo) 
STOP 2G-TKI44  60 Dasatinib or nilotinib UMRD ≥2 yr Loss of MMR 53.57% (48 mo) 
A-STIM42  80 Imatinib UMRD (occasional weakly positive samples also eligible) ≥2 yr Loss of MMR 61% (36 mo) 
ENESTFreedom43  190 First-line nilotinib MR4.5 ≥1 yr Loss of MMR 51.6% (48 wk) 
ENESTop47  126 Second-line nilotinib after imatinib MR4.5 ≥1 yr Loss of MMR or confirmed loss of MR4 53% (96 wk) 
ISAV 112 Imatinib MR4-MR4.5 ≥18 mo Loss of MMR 48.1% (21.6 mo) 
DADI38  63 Second-line dasatinib MR4 or 0.0069% (IS) ≥1 yr Loss of DMR 44% (36 mo) 
D-STOP50  54 Dasatinib MR4 ≥1 yr BCR-ABL1 > 0.0069% on 2 consecutive results 57% (24 mo) 
EURO-SKI39  755 Imatinib > nilotinib/dasatinib MR4 ≥1 yr Loss of MMR 50% (24 mo) 
Interim results       
 STIM2 (interim)53  124 Imatinib UMRD ≥2 yr Loss of MMR or ≥1-log increase in BCR-ABL1 59% (12 mo) 
 DASFREE (interim)54  84 Dasatinib (first or second line) MR4.5 ≥1 yr Loss of MMR 49% (12 mo) 
 DESTINY55  117 Imatinib > dasatinib/nilotinib MR4 ≥1 yr Loss of MMR 77% (24 mo) 

UMRD, undetectable molecular residual disease.

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