Abstract 5051: Associations between autoimmune conditions and gastric cancer risk among elderly US adults

Background: The associations of multiple autoimmune conditions with gastric cancer may reflect their co-occurrence with autoimmune gastritis and its clinical manifestation pernicious anemia (PA), known risk factors for this malignancy. We analyzed diagnoses in US elderly aged >65 years to investigate the spectrum of these associations and the extent of mediation by PA. Methods: We conducted a population-based nested case-control study...