Evaluation of ICAM and VCAM as biomarkers in serum and bronchoscopic lavage samples of lung cancer patients
摘要
This study aimed to assess the diagnostic and prognostic potential of adhesion molecules ICAM-1, ICAM-2, and VCAM-1 by analyzing their levels in serum and bronchoalveolar lavage (BAL) samples from patients with lung cancer.
MethodsThis prospective, single-center, cross-sectional study was conducted at the chest diseases clinic of Atatürk University Faculty of Medicine from March 2024 to May 2025. Patients diagnosed with malignant or benign lung disease by bronchoscopy, along with a control group of healthy volunteers, were included in the study. Serum samples were collected from all participants, and BAL samples were obtained from the patient groups. ICAM-1, ICAM-2, and VCAM-1 levels were measured by ELISA. Statistical analyses were performed using the SPSS 20.0 software package. Diagnostic accuracy was evaluated with ROC analysis, and 1-year survival was assessed using Kaplan–Meier curves.
ResultsIn the lung cancer group, ICAM-1, ICAM-2, and VCAM-1 levels in serum and BAL samples were significantly higher compared to the benign and control groups (p < 0.001 for all). BAL ICAM-2 level showed the highest diagnostic performance (AUC: 0.990; sensitivity and specificity: 96.4%). Serum ICAM-2 and ICAM-1 also showed high diagnostic performance. BAL ICAM-1 levels were significantly higher in non-small cell lung cancer (NSCLC) than in small cell lung cancer (SCLC) (p = 0.036). High serum ICAM-1 and BAL ICAM-2 levels were associated with mortality (p = 0.048 and p = 0.015, respectively).
ConclusionsSerum and BAL levels of ICAM-1, ICAM-2, and VCAM-1 show promise as potential diagnostic biomarkers for lung cancer. Among these, BAL ICAM-2 levels are especially notable due to their high diagnostic accuracy and link to survival.