CVID Enteropathy Associated With Chronic Norovirus Infection: Background, Clinical Features, and Therapeutic Aspects

Area of Science:

• Immunology
• Gastroenterology
• Virology

Background:

• Common variable immunodeficiency (CVID) is a primary immunodeficiency affecting antibody production and immune regulation.
• Gastrointestinal involvement is common in CVID, with chronic norovirus infection implicated in enteropathy development.
• CVID-associated enteropathy presents with chronic diarrhea, malabsorption, and weight loss, significantly increasing morbidity.

Purpose of the Study:

• To review the epidemiology, pathogenesis, clinical features, and diagnostics of CVID-associated enteropathy due to chronic norovirus.
• To focus on current therapeutic strategies and their limitations.
• To present a case study of successful treatment using nasogastric tube immunoglobulin therapy.

Main Methods:

• Literature review of CVID, norovirus, and enteropathy.
• Analysis of pathogenesis involving immune dysregulation and viral clearance.
• Case report detailing nasogastric immunoglobulin administration and outcomes.

Main Results:

• Chronic norovirus infection is a significant factor in CVID enteropathy.
• Current treatments like IVIG and antivirals show inconsistent efficacy.
• Nasogastric immunoglobulin therapy led to clinical remission, nutritional recovery, and viral clearance in a patient.

Conclusions:

• Norovirus is a key etiological factor in CVID enteropathy.
• Standardized therapeutic approaches are needed.
• Nasogastric immunoglobulin therapy shows potential for treating severe CVID enteropathy.