Long-term survival of sorafenib-treated FLT3-ITD-positive acute myeloid leukaemia patients relapsing after allogeneic stem cell transplantation

Eur J Cancer. 2017 Nov:86:233-239. doi: 10.1016/j.ejca.2017.09.016. Epub 2017 Oct 18.

Abstract

Background: Fms-like tyrosine kinase 3 internal tandem duplication (FLT3-ITD)-positive acute myeloid leukaemia (AML) relapsing after allogeneic stem cell transplantation (allo-SCT) has a dismal prognosis with limited therapeutic options. FLT3-ITD kinase inhibition is a reasonable but palliative experimental treatment alternative in this situation. Information on long-term outcome is not available.

Methods: We performed a long-term follow-up analysis of a previously reported cohort of 29 FLT3-ITD-positive AML patients, which were treated in relapse after allo-SCT with sorafenib monotherapy.

Findings: With a median follow-up of 7.5 years, 6 of 29 patients (21%) are still alive. Excluding one patient who received a second allo-SCT, five patients (17%) achieved sustained complete remissions with sorafenib. Four of these patients are in treatment-free remission for a median of 4.4 years.

Interpretation: Sorafenib may enable cure of a proportion of very poor risk FLT3-ITD-positive AML relapsing after allo-SCT.

Keywords: Acute myeloid leukemia; FLT3-ITD; Hematopoietic stem cell transplantation; Sorafenib.

Publication types

  • Multicenter Study
  • Observational Study

MeSH terms

  • Adolescent
  • Adult
  • Aged
  • Antineoplastic Agents / adverse effects
  • Antineoplastic Agents / therapeutic use*
  • Biomarkers, Tumor / genetics*
  • Disease Progression
  • Disease-Free Survival
  • Female
  • Germany
  • Humans
  • Kaplan-Meier Estimate
  • Leukemia, Myeloid, Acute / enzymology
  • Leukemia, Myeloid, Acute / genetics
  • Leukemia, Myeloid, Acute / mortality
  • Leukemia, Myeloid, Acute / therapy*
  • Male
  • Middle Aged
  • Niacinamide / adverse effects
  • Niacinamide / analogs & derivatives*
  • Niacinamide / therapeutic use
  • Phenylurea Compounds / adverse effects
  • Phenylurea Compounds / therapeutic use*
  • Protein Kinase Inhibitors / adverse effects
  • Protein Kinase Inhibitors / therapeutic use*
  • Recurrence
  • Remission Induction
  • Retrospective Studies
  • Risk Factors
  • Sorafenib
  • Stem Cell Transplantation / adverse effects*
  • Tandem Repeat Sequences*
  • Time Factors
  • Transplantation, Homologous
  • Treatment Outcome
  • Young Adult
  • fms-Like Tyrosine Kinase 3 / genetics*

Substances

  • Antineoplastic Agents
  • Biomarkers, Tumor
  • Phenylurea Compounds
  • Protein Kinase Inhibitors
  • Niacinamide
  • Sorafenib
  • FLT3 protein, human
  • fms-Like Tyrosine Kinase 3