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Do microdeletions lead to immune deficiency?

Sait Karaman1, Filiz Hazan2, Semiha Bahçeci Erdem1

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Central-European Journal of Immunology
|May 20, 2020
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Microdeletion syndromes can lead to immune deficiencies, particularly in DiGeorge syndrome patients. Close monitoring is crucial for early detection and management of these immunological complications in affected children.

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Key words: childrenimmunodeficiencymicrodeletion

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Area of Science:

  • Pediatric Genetics
  • Clinical Immunology
  • Rare Diseases

Background:

  • Microdeletion syndromes are rare genetic disorders.
  • These syndromes are increasingly recognized as potentially associated with immunological dysfunction.
  • Understanding these associations is vital for comprehensive patient care.

Purpose of the Study:

  • To evaluate clinical and laboratory data of patients with microdeletion syndromes.
  • To assess immune functions in individuals diagnosed with microdeletion syndromes.
  • To identify specific immunodeficiencies linked to various microdeletion syndromes.

Main Methods:

  • Retrospective analysis of 39 patients diagnosed with microdeletion syndromes.
  • Data collected from patient records and parental consultations.
  • Inclusion of patients from Pediatric Genetics and Immunology clinics.

Main Results:

  • 10 out of 39 patients (25.6%) reported recurrent upper respiratory tract infections.
  • Specific syndromes like DiGeorge syndrome showed T lymphocyte deficiencies in 5 out of 12 patients.
  • Two DiGeorge syndrome patients required intravenous immunoglobulin (IVIG) therapy for hypogammaglobulinemia and low lymphocytes.

Conclusions:

  • Patients with microdeletion syndromes, especially DiGeorge syndrome, are at risk for immunodeficiencies.
  • Proactive monitoring for immune system abnormalities is recommended for these patients.
  • Early detection and management can prevent serious infectious complications.