Clustering using the DB placed IIM and all its subtypes in the same cluster, together with 10 other IMDs: CR(E)ST syndrome (MIM: 181750), early-onset myasthenia gravis (EOMG [MIM: 254200]), Felty syndrome (MIM: 134750), IgG+ neuromyelitis optica, juvenile idiopathic arthritis (MIM: 618795), MPO+ AAV (MIM: 608710), primary biliary cholangitis (PBC), SjS, SLE, and SSc (Figures 2 and S12). This evidence concerns the gene MPO and Felty syndrome.