Interstitial lung disease and myositis.

Abstract

In patients with myositis, interstitial lung disease (ILD) is one of the major causes of morbidity and mortality. Given the limited evidence, there is an urgent need to refine the treatment for myositis-ILD. This review aims to highlight recent updates on the management of myositis-associated ILD, focusing on screening, risk stratification, and treatment. Asian race and/or residence, dermatomyositis, mechanic's hand, antisynthetase antibodies, and antimelanoma differentiation-associated gene 5 antibodies are risk factors for ILD development. Patients with such risk factors should be screened for ILD using high-resolution computed tomography. Various prediction models for mortality or rapidly progressive ILD (RP-ILD) in patients with myositis-ILD have been proposed, but validation of these models in multiple independent studies is required. Academic societies in Japan, the United Kingdom, and the United States have proposed tentative treatment algorithms for myositis-ILD on the basis of the presence or absence of RP-ILD. Knowledge on myositis-ILD risk stratification, potentially useful for personalized management approaches in clinical practice, is accumulating. However, further global joint efforts are necessary to build a strong evidence base for consensus algorithms for myositis-ILD.