1. Use of serum KL-6 level for detecting patients with restrictive allograft syndrome after lung transplantation.
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Cristina Berastegui, Susana Gómez-Ollés, Alberto Mendoza-Valderrey, Thais Pereira-Veiga, Mario Culebras, Victor Monforte, Berta Saez, Manuel López-Meseguer, Helena Sintes-Permanyer, Victoria Ruiz de Miguel, Carlos Bravo, Judit Sacanell, María-Antonia Ramon, Laura Romero, María Deu, and Antonio Román
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Medicine ,Science - Abstract
KL-6 is an antigen produced mainly by damaged type II pneumocytes that is involved in interstitial lung disease. Chronic lung allograft dysfunction (CLAD) after lung transplantation (LT) is a major concern for LT clinicians, especially in patients with restrictive allograft syndrome (RAS). We investigated KL-6 levels in serum and bronchoalveolar lavage fluid (BALF) as a potential biomarker of the RAS phenotype. Levels of KL-6 in serum and BALF were measured in 73 bilateral LT recipients, and patients were categorized into 4 groups: stable (ST), infection (LTI), bronchiolitis obliterans syndrome (BOS), and RAS. We also studied a healthy cohort to determine reference values for serum KL-6. The highest levels of KL-6 were found in the serum of patients with RAS (918 [487.8-1638] U/mL). No differences were found for levels of KL-6 in BALF. Using a cut-off value of 465 U/mL serum KL-6 levels was able to differentiate RAS patients from BOS patients with a sensitivity of 100% and a specificity of 75%. Furthermore, higher serum KL-6 levels were associated with a decline in Forced Vital Capacity (FVC) at 6 months after sample collection. Therefore, KL-6 in serum may well be a potential biomarker for differentiating between the BOS and RAS phenotypes of CLAD in LT recipients.
- Published
- 2020
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