Idiopathic inflammatory myopathies (IIM), also known as myositis, are a heterogeneous
group of autoimmune disorders with varying clinical manifestations, treatment responses and …

Background Psoriatic arthritis (PsA) is a clinically heterogeneous disease. Clear consensual
treatment guidance focused on the musculoskeletal manifestations of PsA would be …

Objective. To devise new tools to assess activity and damage in patients with idiopathic
myopathies (IIM). Methods. An international multidisciplinary consensus effort to standardize the …

Objective The 1987 American College of Rheumatology (ACR; formerly, the American
Rheumatism Association) classification criteria for rheumatoid arthritis (RA) have been criticized …

Objective To develop and validate new classification criteria for adult and juvenile idiopathic
inflammatory myopathies (IIM) and their major subgroups. Methods Candidate variables …

Polymyositis (PM) and dermatomyositis (DM) are idiopathic inflammatory myopathies (IIMs)
with an autoimmune pathogenesis. Typical features are subacute-onset, proximal, symmetric …

A European League Against Rheumatism (EULAR) task force was established to define
points to consider on use of antirheumatic drugs before pregnancy, and during pregnancy and …

Background: Certolizumab pegol is a PEGylated tumour necrosis factor inhibitor. Objective:
To evaluate the efficacy and safety of certolizumab pegol versus placebo, plus methotrexate (…

OBJECTIVE To determine the prevalence of myositis specificautoantibodies (MSAs) and
several myositisassociated autoantibodies (MAAs) in a large group of patients with myositis. …

Objective: To evaluate a contribution of selected laboratory parameters for a prediction of
progressive and erosive development in patients with early rheumatoid arthritis (RA). Methods: …