A Case in Which Breast Cancer Developed at the Same Time As Dermatomyositis, and the Onset of New Cancer Was Able to Be Predicted by the Exacerbating Skin Symptoms and Parallel Increase in the Anti-TIF1-γ Antibody Levels

Association Between Anti-TIF1-γ Antibody and Triple-Negative Breast Carcinoma in Dermatomyositis Patients: A Case Report

Dermatomyositis (DM) is always associated with various types of malignancies in previously published reports. Anti-transcription intermediary factor 1-γ (anti-TIF1-γ) antibody is more prevalent in DM patients with malignancy than in those without malignancy. In this paper, we want to show a possible relation between anti-TIF1-γ and triple-negative breast carcinoma.

Anti-MDA5 Antibody-Positive Clinically Amyopathic Dermatomyositis Associated With Multiple Heterologous Carcinomas: A Case Report

Dermatomyositis (DM), an autoimmune disorder, is linked to increased malignancy risk. A 53-year-old man with anti-melanoma differentiation-associated gene 5 (MDA5)-positive clinically amyopathic dermatomyositis (CADM) and rapidly progressing interstitial lung disease (RP-ILD) developed heterochronous gastric and colorectal cancers. Early endoscopic screenings led to successful curative resections, preventing recurrence. Despite low cancer incidence assumptions in patients with anti-MDA5-positive RP-ILD, this case advocates for reevaluation and periodic cancer screenings to enhance management, considering the improved survival with intensive therapy. Vigilance for multiple carcinomas at various time points is vital in CADM management.