Additionally, we performed a meta‐analysis on the prevalence of positive serological CeD markers (IgA EMA plus IgA tTG antibodies) in PBC (n = 11 studies) [14, 26, 27, 28, 29, 30, 31, 32, 33, 34, 38], observing a weighted pooled CeD prevalence of 1.32% (95% CI 0.45–2.51), which was similar to the biopsy‐confirmed prevalence (Figure S5). The gene discussed is CD79A; the disease is primary biliary cholangitis.