FLT3-ITD mutation in relation to FLT3 expression in pediatric AML: a prospective study from India

Pediatr Hematol Oncol. 2014 Mar;31(2):131-7. doi: 10.3109/08880018.2013.870624. Epub 2014 Feb 5.

Abstract

There is lack of data with regard to FLT3 expression in FLT3-ITD positive pediatric AML patients. Further, FLT3-ITD has not been systematically analyzed for outcome from Indian subcontinent. Amongst 64 consecutive pediatric AML patients, FLT3-ITD was present in 12 (19%) patients. All patients with FLT3-ITD achieved CR; those with FLT3-ITD mutation had inferior DFS (P = .029). FLT3 expression by flow-cytometry was observed in all FLT3-ITD positive patients, whereas 40/52 (77%) FLT3-ITD negative patients expressed FLT3 (P = .06). FLT3 expression in 12 FLT3-ITD positive patients was unable to show an association between FLT3 expression and outcome. In FLT3-ITD negative patients, higher surface expression of FLT3 significantly predicted poor EFS (P = .001) and OS (P = .007).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Child
  • Child, Preschool
  • Female
  • Humans
  • Infant
  • Leukemia, Myeloid, Acute / genetics*
  • Leukemia, Myeloid, Acute / mortality
  • Male
  • Mutation*
  • Prospective Studies
  • fms-Like Tyrosine Kinase 3 / analysis
  • fms-Like Tyrosine Kinase 3 / genetics*

Substances

  • FLT3 protein, human
  • fms-Like Tyrosine Kinase 3