MUC2 and rheumatoid arthritis: Three compounds in Bauhinia championii (BC) have overlapping genes with RA: Sinensetin (BC-1): IL5, TNF, MUC2, RNASE3, NFKB1; 5,7,3′,4′,5′-Pentamethoxyflavone (BC-2): IL5, TNF, MUC2, RNASE3, NFKB; 5,6,7,3′,4′,5′-Hexamethoxyflavone (BC-3): IL5, TNF, MUC2, RNASE3, NFKB1.