PRTN3 and rheumatoid arthritis: In RA patients compared with controls:↑ Bacilli class and Lactobacillales order↓ Faecalibacterium genus andFaecalibacterium prausnitzii speciesPositive correlations:RF and ACPA positivity and RoseburiaESR and Roseburia faecisNegative correlations:RF and ACPA positivity and: Bacilli class or Lactobacillales genus