A post-hoc analysis published in Lancet Rheumatology suggested that Janssen’s IL-23 inhibitor Tremfya ​​(guselkumab) is effective in treating psoriatic arthritis (PsA) patients with symptoms affecting the spine and sacroiliac (SI) joints. In addition, the patient subset had sustained improvement through 52 weeks. The study focused on psoriatic arthritis patients in the company’s Phase 3 DISCOVER-1 and DISCOVER-2…