Synovitis is related to villonodular synovitis and pigmented villonodular synovitis, and has symptoms including arthralgia, metatarsalgia and myalgia. An important gene associated with Synovitis is RELN (Reelin), and among its related pathways/superpathways are ERK Signaling and Innate Immune System. The drugs Upadacitinib and Mometasone furoate have been mentioned in the context of this disorder. Affiliated tissues include bone marrow and bone, and related phenotypes are homeostasis/metabolism and growth/size/body region