Evaluation of poor prognostic factors of respiratory related death in microscopic polyangiitis complicated by interstitial lung disease.

ABSTRACT: The prognosis of microscopic polyangiitis (MPA) with interstitial lung disease (ILD) is significantly worse than that of MPA without ILD. However, the clinical characteristics in MPA-ILD, especially poor prognostic factors, are not elucidated. We evaluated demographic, clinical, laboratory, and radiological findings, treatments, and outcomes of 80 patients with MPA, and investigated prognostic factors of respiratory-related death in patients with myeloperoxidase (MPO)-anti-neutrophil cytoplasmic antibody (ANCA) positive MPA-ILD. Ground-glass opacity and fibrosis were evaluated as scores on high-resolution computed tomography (HRCT). The presence of ILD was consistent with a high risk of respiratory-related death (hazard ratio, 4.8; P?=?0.04). Multivariable logistic regression analyses using propensity scoring showed right or left lower lobe fibrosis score to be significantly associated with respiratory-related death (P?=?0.0005 and 0.0045, respectively). A right or left lower lobe fibrosis score???2, indicating the presence of honeycombing at 1 cm above the diaphragm, was determined to be the best cut-off value indicating a poor prognosis. The 5-year survival rate was significantly lower in patients with right or left lower lobe fibrosis score???2 (survival rates: 37% and 19%, respectively) than those with a score?

SUBMITTER: Matsuda S 

PROVIDER: S-EPMC7810976 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature