Detection of Acquired Hemoglobinopathy in Children with Hematological Malignancies at Disease Onset: Results Form a National Referral Centre

Overview

Journal Int J Hematol

Specialty Hematology

Date 2013 Oct 8

PMID 24096989

Authors

Despoina N Maritsi

Helen V Kosmidis

Varvara Douna

Joanne Traeger-Synodinos

Maria N Tsolia

Lydia Kossiva

Affiliations

Soon will be listed here.

Abstract

Abnormal hemoglobin synthesis is usually inherited but may also arise as a secondary manifestation of a hematological neoplasia. The objective of this study is to identify the presence of acquired hemoglobinopathy in children diagnosed with hematological malignancies and compare these against healthy controls. Prospective matched case-control study held from 2010 to 2012. For each patient with hematological malignancy two healthy controls matched on gender, age and race were recruited. Patients with other co-morbidities were excluded. All samples underwent supravital staining and high-performance liquid chromatography (HPLC) electrophoresis. Following identification of abnormal results, molecular genetic testing for all α- and β-thalassemia mutations prevalent in the Greek population was performed. Other causes of anemia were ruled out based on specific testing. A total of 44 (32 males) patients with a mean age of 7.1 years were enrolled in the study. Hematological disorders included acute lymphocytic leukemia (24), acute myeloid leukemia (8), non-Hodgkin lymphoma (8), Hodgkin disease (3), and Langerhans cell histiocytosis (1). Following exclusion of congenital hemoglobinopathies, atypical HPLC electrophoretic findings persisted in 18.1 % of the patient group, compared to 0 % in the control group (p < 0.001). The patient group showed marked microcytic anemia (p < 0.01) and detection of small inclusions (p = 0.034) on supravital staining. Comparison of the HPLC findings between the groups demonstrated significantly lower percentages of HbA (p = 0.02), normal HbA2 and higher percentage of fast moving Hb bands (p = 0.04) in the patient group. Interestingly, the majority of these patients belonged to the high-risk group. Acquired hemoglobinopathy is recognized in adult patients. This is a novel study describing evidence of abnormal erythropoiesis in children with hematological malignancies and in particular those classified as high-risk cancer patients according to international criteria.

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