Anti-MJ/NXP-2 autoantibody specificity in a cohort of adult Italian patients with polymyositis/dermatomyositis

Arthritis Research & Therapy, 05/08/2012

Anti–MJ antibodies are the most frequent specificity in the cohort of adult Italian polymyositis/dermatomyositis (PM/DM). Anti–MJ (+) were associated with young onset DM, calcinosis, no internal organ involvement and good response of myopathy to therapy. Anti–MJ reported in juvenile DM is also found in adult PM/DM, and could be a new useful biomarker.

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