PRG4 and juvenile idiopathic arthritis: Other genes of interest for monogenic forms of JIA were analyzed, including LACC1, LPIN2, MAFB, MIF, NFIL3, NOD2, PRG4, PRF1, STX11, TNFAIP3, TRHR, and UNC13D; no pathogenic or likely pathogenic variants were found in this patient.