Surveillance of Primary Immunodeficiency Disorders in Mofid Children's Hospital: A 10-year Retrospective Experience

Background: Primary immunodeficiency disorders comprise a heterogeneous group of diseases in which there is a defect in the development or function of the immune system. Clinical presentation of these disorders is highly variable. The aim of this study was to determine the frequency and type of primary immunodeficiency disorders, diagnostic delay, common pathogenic microorganisms, and infectious complications in patients, admitted to Mofid Children’s hospital in the past decade (2004 - 2014). Methods: The data of patients with a diagnosis of primary immunodeficiency disorder, admitted to Mofid Children’s hospital from 2004 to 2014, were reviewed. The frequency, diagnostic delay, pathogenic microorganisms, and their sequelae were determined. Results: In 32 patients (20 males and 12 females) admitted to Mofid hospital in the past decade, chronic granulomatous disease was the most frequent primary immunodeficiency disorder (22%). Other immunodeficiency disorders in these patients included X-linked agammaglobulinemia, hyper IgM syndrome, common variable immunodeficiency, severe combined immunodeficiency, ataxia-telangiectasia syndrome, transient hypogammaglobulinemia of infancy, leukocyte adhesion deficiency, and Kostmann syndrome. The mean age at onset of these disorders was 15 months, and the mean delay in diagnosis was 20 months. Pneumonia was the most common infectious manifestation (53%), and Acinetobacter was the most common isolated microorganism. Conclusions: Diagnostic delay is a major concern in patients with primary immunodeficiency disorders. Ethnic and geographical differences may significantly influence the frequency and presentation of these disorders. Therefore, local epidemiological data are always necessary and useful in the management of primary immunodeficiency disorders.