TY - JOUR T1 - Pregnancy Outcomes in Patients with Psoriatic Arthritis JF - The Journal of Rheumatology JO - J Rheumatol SP - 128 LP - 129 DO - 10.3899/jrheum.160929 VL - 44 IS - 1 AU - MARIA A. MOUYIS AU - CATHERINE C. THORNTON AU - DAVID WILLIAMS AU - IAN P. GILES Y1 - 2017/01/01 UR - http://www.jrheum.org/content/44/1/128.abstract N2 - To the Editor:Historically, pregnancy has been considered to have a beneficial effect upon inflammatory arthritis, with around 75% of women with rheumatoid arthritis (RA) reportedly improving. These findings were mostly from retrospective studies, which lacked objective measures of disease activity1. Modern prospective studies using validated measures of disease activity reveal less impressive ameliorative effects of pregnancy on inflammatory disease activity, reporting that around 50% of women with active RA improve during pregnancy2. Further, it is now recognized that active disease in women with inflammatory arthritis is associated with adverse pregnancy outcomes3. Most studies, however, have focused on patients with RA and there is much less information on disease activity and pregnancy outcomes in women with psoriatic arthritis (PsA).Therefore, we carried out a retrospective analysis of all patients with … Address correspondence to Dr. I.P. Giles, University College London Hospital, 235 Euston Road, London, NW1 2BU, UK. E-mail: i.giles{at}ucl.ac.uk ER -