OBJECTIVES: The aims of this study were to clarify the long-term outcome of @entity1 with @entity6558 and @entity6017 (PM/ @entity3918 ) and to elucidate prognostic factors using statistical analysis. METHODS: We enrolled @entity1 with PM/ @entity3918 who visited our department between 1990 and 2014. Diagnoses of PM/ @entity3918 and clinically amyopathic @entity3918 were based on the definitions of Bohan and Peter, and Sontheimer, respectively. We also obtained clinical data, such as age of onset, sex, medications, and presence of @entity401 and @entity5 , as well as laboratory tests, including the values of @entity908 kinase, @entity2355 , and ferritin. The follow-up was conducted until June 2014. RESULTS: A total of 124 @entity1 (PM: 46, @entity3918 : 78) were enrolled. The mean age of onset was 53.5 years, and females were predominant (64.5%). Overall survival rates were 93%, 86%, and 78% for 1, 5, and 10 years, respectively. The survival rates were significantly lower in @entity1 with higher age of onset, with @entity5 , and with @entity6737 in univariate analysis; however, multivariate analysis identified age of onset and serum ferritin as the most significant prognostic factors. CONCLUSIONS: Our study indicates that when age of onset and serum ferritin are used in combination, we can predict prognosis of @entity1 with PM/ @entity3918 .

Long-term follow-up of 124 @entity1 with @entity6558 and XXXX : Statistical analysis of prognostic factors.

@entity1 :: ('9606', 'Species') :: ['patients'] @entity6017 :: ('MESH:D003882', 'Disease') :: ['dermatomyositis'] @entity5 :: ('MESH:D009369', 'Disease') :: ['malignancies'] @entity908 :: ('MESH:D003401', 'Chemical') :: ['creatine'] @entity2355 :: ('4582', 'Gene') :: ['KL-6'] @entity401 :: ('MESH:D017563', 'Disease') :: ['interstitial lung disease'] @entity3918 :: ('MESH:D009223', 'Disease') :: ['DM'] @entity6737 :: ('MESH:C538137', 'Disease') :: ['hyperferritinemia'] @entity6558 :: ('MESH:D017285', 'Disease') :: ['polymyositis']
@entity6017 :: (MESH:D003882,Disease) :: ['dermatomyositis']
