Initial blood fetal hemoglobin concentration is elevated and is associated wtih prognosis in children with acute

J Rautonen1, M A Siimes

  • 1Children's Hospital, University of Helsinki, Finland.

Blut
|July 1, 1990
PubMed

Insights

Elevated fetal hemoglobin (HbF) levels in children with leukemia correlate with a higher risk of death or relapse. Increased HbF synthesis appears linked to more aggressive forms of childhood leukemia.

Area of Science:

  • Pediatric Hematology Oncology
  • Molecular Biology

Background:

  • Fetal hemoglobin (HbF) is typically present in fetal blood and decreases after birth.
  • Elevated HbF levels can be observed in various hematological conditions, including certain leukemias.

Purpose of the Study:

  • To investigate the association between initial fetal hemoglobin (HbF) concentration and prognosis in pediatric leukemia patients.
  • To determine if HbF levels can serve as a predictive biomarker for outcomes in childhood leukemia.

Main Methods:

  • Retrospective analysis of 100 children diagnosed with leukemia.
  • Multivariate analysis to assess the relationship between initial HbF levels and the risk of death or relapse.
  • Comparison of mean initial HbF concentrations between acute lymphoblastic leukemia (ALL) and myeloid leukemia subtypes.

Main Results:

  • Initial fetal hemoglobin (HbF) concentration was generally elevated in pediatric leukemia patients.
  • Each 1 g/l increase in initial HbF was associated with a 1.13-fold increased risk of death/relapse in acute lymphoblastic leukemia (ALL) (P < 0.05).
  • Each 1 g/l increase in initial HbF was associated with a 1.20-fold increased risk of death/relapse in myeloid leukemias (P < 0.02).
  • Mean initial HbF was higher in myeloid leukemias (3.4 g/l) compared to ALL (1.1 g/l).

Conclusions:

  • Increased fetal hemoglobin (HbF) synthesis is associated with the degree of malignancy in pediatric leukemia.
  • Elevated HbF levels may indicate a more aggressive disease course in children with leukemia.
  • HbF concentration could potentially serve as a prognostic marker in pediatric leukemia management.