Disease course, frequency of relapses and survival of 73 patients with juvenile or adult dermatomyositis

Ponyi, Andrea and Constantin, Tamás and Balogh, Zsolt and Szalai, Zsuzsanna and Borgulya, Gábor and Molnár, K. and Tefner, I. and Garami, Miklós and Fekete, György and Dankó, K. (2005) Disease course, frequency of relapses and survival of 73 patients with juvenile or adult dermatomyositis. Clinical and Experimental Rheumatology, 23 (1). pp. 50-56. ISSN 0392-856X

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Abstract

Objective Our aim is to present the disease course, frequency of relapses and survival of juvenile and adult dermatomyositis (JDM/DM) patients. Methods Analysis was performed using data on 73 patients. The median follow-up for 38 JDM patients was 32 months and 78 months for 35 adult DM patients. Results 23/38 JDM patients (60%) had monophasic, 12/38 (31.6%) had polycyclic and 3138 (7.9%) had chronic disease. Among children treated only with glucocorticoids, 12/20 (60%) had monophasic and 8/20 (40%) had polycyclic disease. 10/17 (58.8%) children, who required second-line immunosuppressive agents, had monophasic and 4/17 (23.5%) had polycyclic disease. 18/35 DM (51.4%) patients had monophasic, 13/35 (37.1%) had polycyclic, 1/35 (2.9%) had chronic disease and 3135 (8.6%) had fulminant myositis. Among DM patients requiring only glucocorticoids, 12/20 (60%) were monophasic and 8/20 (40%) were polycyclic. In patients requiring second-line immunosuppressive agents, 6/15 patients (40%) had monophasic and 5/15 (33.3%) had polycyclic disease. Among patients with polycyclic disease, the risk of relapse was higher during first year than later in the disease course. None of the JDM patients have died, while 4 disease-specific deaths occurred in adult patients. There was no significant difference between the survival of JDM and DM patients. Discussion There was no correlation between relapse-free survival and the initial therapeutic regimen. Many of our patients had polycyclic or chronic disease. As relapses can occur after a prolonged disease-free interval, patients should be followed for at least 2 years. Although we found a favourable survival rate, further investigations are needed to assess functional outcome.

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