Observational studies have shown a higher prevalence of Sjogren's syndrome (SjS) in patients with primary biliary cholangitis (PBC) than in the healthy population, but whether this correlation is causal needs further confirmation. This study aimed to investigate the bidirectional causal relationship between PBC and SjS using Mendelian randomization (MR) analysis.
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Wang et al. (2024) studied this question.
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