Primary Immunodeficiency Disorders in children with Non-Cystic Fibrosis Bronchiectasis

Area of Science:

• Immunology
• Pulmonology
• Genetics

Background:

• Primary immunodeficiency diseases (PID) are frequently observed in patients with non-cystic fibrosis bronchiectasis (NCFB).
• Understanding the prevalence and types of PID in NCFB is essential for timely diagnosis and management.

Purpose of the Study:

• To determine the ratio and types of primary immunodeficiency diseases (PID) in patients diagnosed with non-cystic fibrosis bronchiectasis (NCFB).

Main Methods:

• A cohort of seventy NCFB patients was followed over two years.
• Data collected included patient demographics, age of first pulmonary infection, age of bronchiectasis diagnosis, and presence of co-morbidities.
• Genetic testing and immunological assessments were performed for a subset of patients.

Main Results:

• Approximately 40% of NCFB patients (29 out of 70) were diagnosed with a PID, predominantly primary antibody deficiencies.
• Patients with PID and non-PID NCFB showed no significant differences in demographic factors or common co-morbidities.
• Patients with PID experienced a significant delay (approximately 3 years) in admission to an immunology clinic compared to non-PID patients.

Conclusions:

• Primary immunodeficiency diseases constitute a significant proportion, around 40%, of NCFB cases.
• Early detection and appropriate treatment, including specialized follow-up in immunology clinics, are vital for improving the clinical trajectory of PID patients.
• Routine screening for PID is recommended for infants experiencing their first pneumonia within the first year of life and for all NCFB patients.