Prof Iain McInnes reviews two papers this month, and discusses exposure-adjusted incidence rates of TEAEs and AESIs with filgotinib, as well as the efficacy and safety of tofacitinib in pJIA. Keep up to date with the latest in arthritis and cytokine signalling with Prof Iain McInnes. Everything discussed is available in a more detailed slide format in the publications section at cytokinesignalling.com.