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Immune Checkpoint Inhibitor-Related Myositis: From Biology to Bedside

Antonio G Solimando1,2, Lucilla Crudele2, Patrizia Leone2

  • 1IRCCS Istituto Tumori "Giovanni Paolo II", 70124 Bari, Italy.

International Journal of Molecular Sciences
|May 3, 2020
PubMed

: Immune checkpoint inhibitor (ICI)-related inflammatory diseases, including polymyositis (PM) and dermatomyositis (DM), in patients suffering from neoplastic disorders represent a medical challenge. The treatment of these conditions has taken on new urgency due to the successful and broad development of cancer-directed immunological-based therapeutic strategies. While primary and secondary PM/DM phenotypes have been pathophysiologically characterized, a rational, stepwise approach to the treatment of patients with ICI-related disease is lacking. In the absence of high-quality evidence to guide clinical judgment, the available data must be critically assessed. In this literature review, we examine partially neglected immunological and clinical findings to obtain insights into the biological profiles of ICI-related PM/DM and potential treatment options. We show that differential diagnosis is essential to stratifying patients according to prognosis and therapeutic impact. Finally, we provide a comprehensive assessment of druggable targets and suggest a stepwise patient-oriented approach for the treatment of ICI-related PM/DM.

Keywords:
autoimmunitycancerdermatomyositisimmune checkpoint inhibitorsimmune-related adverse eventsmyositispolymyositis

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