Prof Iain McInnes reviews two papers this month, and discusses the risk of herpes zoster (HZ) events in patients with RA treated with tofacitinib, as well as interstitial lung disease (ILD), an extra-articular manifestation of RA. 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.