diagnostic method and diagnostic kit for dermatomyositis

摘要

An object of the present invention is to identify an antigen corresponding to anti-CADM-140 antibody, produce a recombinant protein, and establish an assay system by ELISA or the like. The present invention provides a kit for diagnosing dermatomyositis containing an MDA5 protein shown in SEQ ID NO: 4 or a fragment thereof that is recognized by anti-CADM-140 antibody.