PT - JOURNAL ARTICLE AU - Herrick, Ariane L AU - Pan, Xiaoyan AU - Peytrignet, Sébastien AU - Lunt, Mark AU - Hesselstrand, Roger AU - Mouthon, Luc AU - Silman, Alan AU - Brown, Edith AU - Czirják, László AU - Distler, Jörg H W AU - Distler, Oliver AU - Fligelstone, Kim AU - Gregory, William J AU - Ochiel, Rachel AU - Vonk, Madelon AU - Ancuţa, Codrina AU - Ong, Voon H AU - Farge, Dominique AU - Hudson, Marie AU - Matucci-Cerinic, Marco AU - Balbir-Gurman, Alexandra AU - Midtvedt, Øyvind AU - Jordan, Alison C AU - Jobanputra, Paresh AU - Stevens, Wendy AU - Moinzadeh, Pia AU - Hall, Frances C AU - Agard, Christian AU - Anderson, Marina E AU - Diot, Elisabeth AU - Madhok, Rajan AU - Akil, Mohammed AU - Buch, Maya H AU - Chung, Lorinda AU - Damjanov, Nemanja AU - Gunawardena, Harsha AU - Lanyon, Peter AU - Ahmad, Yasmeen AU - Chakravarty, Kuntal AU - Jacobsen, Søren AU - MacGregor, Alexander J AU - McHugh, Neil AU - Müller-Ladner, Ulf AU - Riemekasten, Gabriela AU - Becker, Michael AU - Roddy, Janet AU - Carreira, Patricia E AU - Fauchais, Anne Laure AU - Hachulla, Eric AU - Hamilton, Jennifer AU - İnanç, Murat AU - McLaren, John S AU - van Laar, Jacob M AU - Pathare, Sanjay AU - Proudman, Susannah AU - Rudin, Anna AU - Sahhar, Joanne AU - Coppere, Brigitte AU - Serratrice, Christine AU - Sheeran, Tom AU - Veale, Douglas J AU - Grange, Claire AU - Trad, Georges-Selim AU - Denton, Christopher P TI - Treatment outcome in early diffuse cutaneous systemic sclerosis: the European Scleroderma Observational Study (ESOS) AID - 10.1136/annrheumdis-2016-210503 DP - 2017 Jul 01 TA - Annals of the Rheumatic Diseases PG - 1207--1218 VI - 76 IP - 7 4099 - http://ard.bmj.com/content/76/7/1207.short 4100 - http://ard.bmj.com/content/76/7/1207.full SO - Ann Rheum Dis2017 Jul 01; 76 AB - Objectives The rarity of early diffuse cutaneous systemic sclerosis (dcSSc) makes randomised controlled trials very difficult. We aimed to use an observational approach to compare effectiveness of currently used treatment approaches.Methods This was a prospective, observational cohort study of early dcSSc (within three years of onset of skin thickening). Clinicians selected one of four protocols for each patient: methotrexate, mycophenolate mofetil (MMF), cyclophosphamide or ‘no immunosuppressant’. Patients were assessed three-monthly for up to 24 months. The primary outcome was the change in modified Rodnan skin score (mRSS). Confounding by indication at baseline was accounted for using inverse probability of treatment (IPT) weights. As a secondary outcome, an IPT-weighted Cox model was used to test for differences in survival.Results Of 326 patients recruited from 50 centres, 65 were prescribed methotrexate, 118 MMF, 87 cyclophosphamide and 56 no immunosuppressant. 276 (84.7%) patients completed 12 and 234 (71.7%) 24 months follow-up (or reached last visit date). There were statistically significant reductions in mRSS at 12 months in all groups: −4.0 (−5.2 to −2.7) units for methotrexate, −4.1 (−5.3 to −2.9) for MMF, −3.3 (−4.9 to −1.7) for cyclophosphamide and −2.2 (−4.0 to −0.3) for no immunosuppressant (p value for between-group differences=0.346). There were no statistically significant differences in survival between protocols before (p=0.389) or after weighting (p=0.440), but survival was poorest in the no immunosuppressant group (84.0%) at 24 months.Conclusions These findings may support using immunosuppressants for early dcSSc but suggest that overall benefit is modest over 12 months and that better treatments are needed.Trial registration number NCT02339441.