[Lung disease in adult common variable immunodeficiency]

Area of Science:

• Immunology
• Pulmonology
• Pathology

Background:

• Common variable immunodeficiency (CVID) impairs antibody production, leading to recurrent infections.
• CVID patients may develop non-infectious diffuse infiltrative lung diseases, including granulomatous lymphocytic interstitial lung disease (GLILD).
• GLILD encompasses a spectrum of lymphoid histological lesions and is associated with a poor prognosis, unaffected by immunoglobulin replacement therapy.

Purpose of the Study:

• To highlight the diagnostic challenges and prognostic implications of GLILD in CVID.
• To emphasize the need for a revised approach to managing diffuse infiltrative lung diseases in CVID.

Main Methods:

• Histopathological analysis of lung biopsies from CVID patients.
• Review of clinical data and treatment outcomes.

Main Results:

• GLILD represents a variable histological spectrum rather than a distinct entity.
• Immunoglobulin replacement therapy reduces infectious complications but does not impact non-infectious lung disease progression.

Conclusions:

• The identification of GLILD necessitates a re-evaluation of diffuse infiltrative lung diseases in CVID.
• Further studies are required to establish optimal follow-up protocols and understand the long-term progression of GLILD.
• Management strategies must consider the increased infection risk associated with immunosuppressive treatments in CVID patients with GLILD.