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Randomized Controlled Trial
. 2021 Sep;35(9):2517-2525.
doi: 10.1038/s41375-021-01148-x. Epub 2021 Feb 18.

Sorafenib or placebo in patients with newly diagnosed acute myeloid leukaemia: long-term follow-up of the randomized controlled SORAML trial

Affiliations
Randomized Controlled Trial

Sorafenib or placebo in patients with newly diagnosed acute myeloid leukaemia: long-term follow-up of the randomized controlled SORAML trial

Christoph Röllig et al. Leukemia. 2021 Sep.

Abstract

Early results of the randomized placebo-controlled SORAML trial showed that, in patients with newly diagnosed acute myeloid leukaemia (AML), sorafenib led to a significant improvement in event-free (EFS) and relapse-free survival (RFS). In order to describe second-line treatments and their implications on overall survival (OS), we performed a study after a median follow-up time of 78 months. Newly diagnosed fit AML patients aged ≤60 years received sorafenib (n = 134) or placebo (n = 133) in addition to standard chemotherapy and as maintenance treatment. The 5-year EFS was 41 versus 27% (HR 0.68; p = 0.011) and 5-year RFS was 53 versus 36% (HR 0.64; p = 0.035). Allogeneic stem cell transplantation (allo SCT) was performed in 88% of the relapsed patients. Four years after salvage allo SCT, the cumulative incidence of relapse was 54 versus 35%, and OS was 32 versus 50%. The 5-year OS from randomization in all study patients was 61 versus 53% (HR 0.82; p = 0.282). In conclusion, the addition of sorafenib to chemotherapy led to a significant prolongation of EFS and RFS. Although the OS benefit did not reach statistical significance, these results confirm the antileukaemic activity of sorafenib.

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Conflict of interest statement

GE and CR received institutional funding for the study from Bayer HealthCare Germany. All other authors declare no competing financial interests.

Figures

Fig. 1
Fig. 1. Survival outcomes based on randomization to the sorafenib arm (red line) or placebo arm (black line).
Event-free survival (A), relapse-free survival (B) and overall survival (C) with no censoring for allogeneic stem cell transplantation.
Fig. 2
Fig. 2. Treatment of patients after first relapse outside the SORAML trial.
CR complete remission, OS overall survival, SCT allogeneic stem cell transplantation, ident HLA-identical donor (10/10 matching alleles), haplo haploidentical donor (5/10 matching alleles).
Fig. 3
Fig. 3. Outcomes after salvage allo SCT after pretreatment with either sorafenib (red lines) or placebo (black lines) during first-line treatment.
Cumulative incidence of relapse (CIR, continuous lines) and non-relapse mortality (NRM, dashed lines).
Fig. 4
Fig. 4. Overall survival (OS) from the time of relapse.
Outcome for patients with pretreatment in the sorafenib arm (red line) or placebo arm (black line).

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