Table 3.

Autoimmune diseases associated with autoimmune gastritis (adapted from Massironi et al., 2019).

Disease	Association Degree
Autoimmune thyroiditis (Hashimoto’s thyroiditis) and Graves’ disease	++++ (multiple cohort studies, two crossover studies, and two case–control studies)
Type 1 diabetes mellitus	+++ (one case–control study and several cohort studies)
Vitiligo	++ (one cohort study and several clinical observations)
Alopecia	++ (several cohort studies)
Celiac disease	++ (several cohort studies)
Myasthenia gravis	+ (single clinical observations)
Connective tissue disease	++ (one cohort study and several clinical observations)
Primary biliary cholangitis	++ (one cohort study and several clinical observations)
Primary sclerosing cholangitis	+ (single clinical observations)
Autoimmune hepatitis	+ (single clinical observations)
Addison’s disease	+ (single clinical observations)
Primary ovarian insufficiency	+ (single clinical observations)
Primary hypoparathyroidism	+ (single clinical observations)
Lambert-Eaton syndrome	+ (single clinical observations)
Oral lichen planus	+ (single clinical observations)