Myositis-specific autoantibodies (MSAs), myositis-associated autoantibodies (MAAs), and antinuclear antibodies (ANAs) were determined.<h4>Results</h4>The IIM subtypes in our patients were dermatomyositis (DM), polymyositis, amyopathic DM, juvenile DM, cancer-associated myositis, scleromyositis, and antisynthetase syndrome. The gene discussed is MAPKAPK5-AS1; the disease is Scleroderma Polymyositis Overlap Syndrome.