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Common variable hypogammaglobulinemia in children. Clinical and immunologic observations in 30 patients
Insights
Common variable hypogammaglobulinemia (CVHG) in children often presents with recurrent infections and complications like short stature. Early diagnosis and immune function assessment are crucial for managing this condition.
Area of Science:
- Pediatric Immunology
- Clinical Immunology
- Immunodeficiency Disorders
Background:
- Common variable hypogammaglobulinemia (CVHG) is a primary immunodeficiency characterized by low antibody levels and impaired humoral immunity.
- Diagnosis in children is often delayed, leading to significant morbidity from recurrent infections and complications.
- Clinical manifestations can be diverse, impacting multiple organ systems.
Purpose of the Study:
- To describe the clinical and immunologic features of 30 children diagnosed with CVHG.
- To highlight the diagnostic delay and common complications associated with pediatric CVHG.
- To evaluate the humoral and cellular immune functions in affected children.
Main Methods:
- Retrospective review of clinical and laboratory data from 30 pediatric patients with CVHG.
- Analysis of diagnostic criteria, presenting symptoms, complications, and treatment outcomes.
- Assessment of humoral (antibody levels) and cellular (lymphocyte subsets) immune function.
Main Results:
- The mean age at diagnosis was 10.5 years, with a 5-year delay from symptom onset.
- Recurrent otobronchopulmonary infections and/or diarrhea were the most common initial presentations.
- Short stature, bronchiectasis, malabsorption (often with giardiasis/sprue), and autoimmune diseases were frequent complications.
- Three patients (10%) died from causes including respiratory insufficiency, hepatitis, and osteogenic sarcoma.
Conclusions:
- Pediatric CVHG presents with a significant diagnostic delay, underscoring the need for increased awareness among clinicians.
- Recurrent infections, malabsorption, and autoimmune conditions are common comorbidities requiring comprehensive management.
- Thorough immunologic evaluation is essential for diagnosing and understanding the scope of immune dysfunction in affected children.
Abstract:
We made clinical and immunologic observations of 30 children with common variable hypogammaglobulinemia. The mean age at diagnosis was 10.5 years, five years after clinical onset. Diagnosis was initially made based on a history of recurrent otobronchopulmonary infections, diarrhea, or both. The most common complications included short stature, bronchiectasis, and malabsorption, often associated with giardiasis or sprue. Nine patients had associated autoimmune diseases (eg, atrophic gastritis, arthritis, and hemolytic anemia). Three patients died, one of chronic respiratory insufficiency, one of chronic persisting hepatitis, and one of osteogenic sarcoma. Humoral and cellular immune functions of all patients were examined.