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Disorders of Erythrocytes

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Hypersensitivity, also known as a hypersensitivity reaction or allergic reaction, is a condition where the body's immune system reacts abnormally to a foreign substance. Such substances, that cause hypersensitivity are referred to as an allergen, could be something typically harmless to most people, like pollen or certain foods.
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Identification and Characterization of Immunogenic RNA Species in HDM Allergens that Modulate Eosinophilic Lung Inflammation
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Hematological hypereosinophilia

Ines Ghariani1,2, Oumaima Mahmoud1,2, Saloua Hamzaoui3,4

  • 1Service laboratoire de biologie clinique (unité d’hématologie), CHU Mongi Slim de la Marsa, Tunis, Tunisie

Annales De Biologie Clinique
|September 13, 2022
PubMed
Summary

Hematological hypereosinophilia, a rare disorder, presents diverse clinical and biological features. Molecular diagnostics and targeted therapies like imatinib are crucial for managing clonal forms.

Keywords:
hematological hypereosinophiliamolecular biologyimatinib

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Area of Science:

  • Hematology
  • Oncology

Background:

  • Hematological disorders are a significant cause of hypereosinophilia.
  • Hypereosinophilia requires comprehensive characterization due to its complex nature.

Purpose of the Study:

  • To elucidate the epidemiological, clinical, biological, and therapeutic profiles of hematological hypereosinophilia.
  • To highlight the role of molecular biology in diagnosing and managing this condition.

Main Methods:

  • Retrospective study of 14 patients diagnosed with hematological hypereosinophilia between March 2017 and March 2021.
  • Analysis of clinical manifestations, blood count abnormalities, and molecular findings (RT-PCR for FIP1L1-PDGFRA fusion gene).

Main Results:

  • The study included 14 patients (9 female, 5 male) with a median age of 55 years.
  • Clonal etiology was predominant, presenting with organ damage, hepato-splenomegaly, and lymphadenopathy.
  • FIP1L1-PDGFRA fusion gene detected in two patients; imatinib was the primary treatment for clonal cases.

Conclusions:

  • Hematological hypereosinophilia exhibits significant heterogeneity.
  • Molecular biology plays a vital role in the diagnosis and treatment strategy for hypereosinophilia.