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[Atypical presentation of common variable immunodeficiency without infections].
J Carbone1, E Sarmiento, J J Rodríguez-Molina
1Unidad de Inmunología Clínica, Servicio de Inmunología, Hospital General Universitario Gregorio Marañón, Spain. carbone@teleline.es
Allergologia Et Immunopathologia
|August 25, 2004
Summary
Common variable immunodeficiency (CVID) can present without infections. Autoimmune conditions like cytopenias or diabetes may be the first sign, necessitating early immunoglobulin level testing.
Area of Science:
- Immunology
- Clinical Medicine
Background:
- Common variable immunodeficiency (CVID) is a primary immunodeficiency characterized by hypogammaglobulinemia and impaired antibody responses.
- Recurrent bacterial infections are typical, but autoimmune diseases and neoplasms are common comorbidities.
- Diagnosis is often delayed, particularly in adults, with a frequent lag in identifying the underlying antibody defect.
Observation:
- This study examined 30 CVID patients, identifying 5 (16.6%) with non-infectious initial presentations.
- Manifestations included immune cytopenias (thrombocytopenic purpura, hemolytic anemia), pernicious anemia, and insulin-dependent diabetes.
- Four patients exhibited IgG levels below 400 mg/dl at diagnosis.
Findings:
- Atypical presentations of CVID, particularly autoimmune disorders, can occur in the absence of recurrent infections.
- Immune cytopenias and autoimmune conditions like pernicious anemia and diabetes were observed as initial clinical features.
- Low IgG levels (<400 mg/dl) were noted in a subset of patients with non-infectious CVID.
Implications:
- Recognizing atypical CVID presentations is crucial to avoid diagnostic delays.
- Baseline immunoglobulin level testing is recommended for patients presenting with autoimmune disorders, even without a history of infections.
- This approach may improve early detection and management of CVID.