Fig. 4
Kaplan-Meier estimate of event-free survival according to minimal residual disease (MRD) risk groups. Patients with MRD < 10−4 at TP1 and TP2 were stratified as the standard-risk group (MRD-SR); MRD ≥ 10−2 at TP1 or MRD ≥ 10−3 at TP2 as high-risk group (MRD-HR); the rest as the intermediate risk group (MRD-IR)