The qPCR assay indicated that OS inhibited the expression of known targets and downstream effectors of NF‐κB signaling, including IL1A, IL1B, ABCG2, Myc, CCNA2, CCNB1, and Twist1 in RA‐FLS (Figure 3A). The gene discussed is CCNB1; the disease is rheumatoid arthritis.