Microcytic anaemia and haemoglobinopathy in Cape Town children

Insights

Microcytic anemia in children is often linked to beta-thalassemia gene or abnormal hemoglobin, particularly in the Coloured population. This study investigated the frequency of these conditions in pediatric patients with low mean corpuscular volume (MCV).

Area of Science:

  • Hematology
  • Pediatric Medicine
  • Genetics

Background:

  • Microcytosis and hypochromia are common in children with thalassemia and iron deficiency anemia.
  • A significant number of children present with microcytic anemia or isolated microcytosis at Red Cross War Memorial Children's Hospital.

Purpose of the Study:

  • To determine the frequency of beta-thalassemia gene and abnormal hemoglobin in pediatric patients with low mean corpuscular volume (MCV).
  • To investigate the association between low MCV and specific hemoglobinopathies in a pediatric cohort.

Main Methods:

  • Retrospective analysis of 730 pediatric patients with MCV of 60 fl or less.
  • Screening for beta-thalassemia gene and abnormal hemoglobin variants.

Main Results:

  • 46 patients (6.4%) carried the beta-thalassemia gene.
  • 20 children (2.7%) had abnormal hemoglobin, most commonly hemoglobin E.
  • Thalassemia prevalence was highest in Coloured patients; abnormal hemoglobins were exclusively found in this group.

Conclusions:

  • Low MCV in children warrants investigation for beta-thalassemia and abnormal hemoglobins.
  • The findings highlight the importance of genetic screening for hemoglobinopathies in specific ethnic groups, particularly the Coloured population.

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