Fms like tyrosine kinase (FLT3) and nucleophosmin 1 (NPM1) mutations in de novo normal karyotype acute myeloid leukemia (AML)

Asian Pac J Cancer Prev. 2010;11(6):1811-6.

Abstract

Mutations in FLT3 and NPM1 are important prognostic factors in AML, influencing outcome in normal karyotype cases. We here analysed incidences of FLT3/ITD, D 835 and NPM1 mutations in patients with de novo normal karyotype AML using PCR and gene sequencing, along with laboratory parameters and treatment outcomes. There were 128 patients with a median age of 45 years (range, 19-65). FLT3/ITD mutations were detected in 26 (20.3%), FLT3/D835 in 8 (6.2%) and NPM1 in 22 (17.1%). The incidence of FLT3/ITD was higher in those with elevated lactate dehydrogenase (LDH) and peripheral blasts (p=< 0.002, < 0.001) while NPM1 mutations or both NPM1 and FLT3/ITD was more common in elevated total leukocyte counts (TLC), LDH and peripheral blasts (p=<0.0001). Complete response and disease free survival were lower in those with FLT3/ITD mutations (p=0.04, 0.03). The incidence of FLT3 and NPM1 mutations was found to be low in Indian patients with normal karyotype AML.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Base Sequence
  • DNA, Neoplasm / genetics
  • Female
  • Follow-Up Studies
  • Humans
  • Karyotyping
  • Leukemia, Myeloid, Acute / genetics*
  • Male
  • Middle Aged
  • Molecular Sequence Data
  • Mutation / genetics*
  • Nuclear Proteins / genetics*
  • Nucleophosmin
  • Polymerase Chain Reaction
  • Prognosis
  • Prospective Studies
  • Retrospective Studies
  • Survival Rate
  • Treatment Outcome
  • Young Adult
  • fms-Like Tyrosine Kinase 3 / genetics*

Substances

  • DNA, Neoplasm
  • NPM1 protein, human
  • Nuclear Proteins
  • Nucleophosmin
  • FLT3 protein, human
  • fms-Like Tyrosine Kinase 3