((Rheumatoid Arthritis OR Joint Inflammation OR "Arthritis, Rheumatoid/drug therapy"[Mesh]) AND (Etanercept OR Anti-TNF OR "Etanercept/therapeutic use"[Mesh])) AND (Methotrexate OR DMARDs OR "Methotrexate/therapeutic use"[Mesh]). This evidence concerns the gene TNF and Arthritis.