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Krebs von den Lungen-6 (KL-6) as a diagnostic and prognostic biomarker for non-neoplastic lung diseases
Alessia Achille1, Gabriella Guarnieri1, Andrea Vianello2
1Department of Cardiac Thoracic Vascular Sciences and Public Health, University of Padova, Padova, Italy.
Abstract:
Important advancements have been made in understanding the pathogenetic mechanisms underlying acute and chronic lung disorders. But although a wide variety of innovative biomarkers have and are being investigated, they are not largely employed to evaluate non-neoplastic lung diseases. The current work aims to examine the use of Krebs von den Lungen-6 (KL-6), a mucin-like glycoprotein predominantly expressed on the surface of type II alveolar epithelial cells (AEC2s), to evaluate the stage, response to treatment, and prognosis in patients with non-neoplastic lung disorders. Data analysis suggests that KL-6 can be utilized as an effective diagnostic and prognostic biomarker in individuals with interstitial lung disease and as a predictor of clinical outcomes in subjects with SARS-CoV-2-related pneumonia. Moreover, KL-6 can be reliably used in routine clinical settings to diagnose and predict the outcome of patients with chronic obstructive pulmonary disease (COPD) exacerbation. The optimal cut-off points within the European population should be defined to improve KL-6's diagnostic efficacy.
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