Gastric Cancer Screening in Common Variable Immunodeficiency

Area of Science:

• Gastroenterology
• Immunology
• Oncology

Background:

• Common variable immunodeficiency (CVID) patients face elevated risks of gastric cancer and gastrointestinal lymphoma.
• Routine screening for premalignant gastric lesions is not standard practice for CVID patients.
• Existing screening protocols lack universal applicability to the CVID population.

Purpose of the Study:

• To investigate the prevalence of premalignant gastric lesions in CVID patients.
• To compare gastric pathology in CVID patients versus a control group.
• To propose an improved gastric screening protocol for CVID patients.

Main Methods:

• Fifty-two CVID patients underwent screening gastroscopy, compared with 40 controls.
• Histopathological analysis of gastric biopsies was performed.
• Risk factors for high-risk gastric pathology were assessed.

Main Results:

• 34% of CVID patients exhibited premalignant lesions (intestinal metaplasia, atrophic gastritis) versus 7.5% of controls (p < 0.01).
• Focal nodular lymphoid hyperplasia, a precursor to gastrointestinal lymphoma, was found in 16% of CVID patients.
• High-risk pathology correlated with disease duration, smoking, H. pylori, low pepsinogen I, and diarrhea.

Conclusions:

• Premalignant gastric lesions are highly prevalent in CVID patients, necessitating routine screening.
• Standardized biopsy protocols are crucial for accurate detection of lesions.
• A novel screening protocol is proposed to mitigate gastric cancer and lymphoma risks in CVID.