Serum cytokine profile of laryngeal squamous cell carcinoma patients.

OBJECTIVES: This study aimed to evaluate serum cytokine concentrations in healthy individuals and laryngeal squamous cell carcinoma patients.

METHODS: A total of 59 laryngeal squamous cell carcinoma patients and 44 healthy controls were included. Multiplex analysis of interleukins 2, 4, 5, 6, 10, 12, 13 and 17 and interferon-gamma with respect to the presence of laryngeal carcinoma, tumour-node-metastasis T stage, nodal involvement and larynx subsite was performed.

RESULTS: Statistical analysis revealed no difference in serum cytokine levels between patients and healthy controls. The serum interleukin-12 concentration was significantly higher in patients with early (T1-2) than in those with late (T3-4) stage disease and without nodal involvement (p < 0.05). Serum interleukin-10 levels were significantly higher in T3-4 stage than in T1-2 stage patients (p < 0.05). Additionally, serum interleukin 10, 12 and 13 concentrations (p < 0.05) and interleukin-6 concentration (p < 0.01) were significantly higher in patients with T1-2 stage supraglottic vs glottic tumours.

CONCLUSION: Serum cytokines level cannot be used as laryngeal squamous cell carcinoma markers. Progression from T1-2 to T3-4 stage is followed by decreased serum interleukin-12 levels and increased interleukin-10 levels. Nodal involvement is associated with lower serum interleukin-12 levels. In patients with early stage tumours, serum interleukin 6, 10, 12 and 13 concentrations are significantly higher in those with supraglottic vs glottic tumours.