Tumor-associated metabolic and inflammatory responses in early stage non-small cell lung cancer: Local patterns and prognostic significance

Laura Millares, Esther Barreiro, Roldan Cortes, Anabel Martinez-Romero, Cristina Balcells, Marta Cascante, Ana Belen Enguita, Carlos Alvarez, Ramón Rami-Porta, Julio Sánchez de Cos, Luis Seijo, Eduard Monsó

Research output: Contribution to journalArticleResearchpeer-review

11 Citations (Scopus)

Abstract

© 2018 Elsevier B.V. Introduction: Non-small cell lung cancer (NSCLC) patients diagnosed in early stage and surgically-treated have five-year mortality rate >20%. The identification of biomarkers able to predict progression and death may help to identify patients needing closer follow-up. Methods: A retrospective cohort of early-stage surgically-treated NSCLC patients enrolled in the International Association for the Study of Lung Cancer (IASLC) Staging Project was created, and tissue Microarrays (TMAs) were constructed with tumor and non-tumor lung tissue. Pentose phosphate pathway (PPP) proteins (transketolase [TKT] and transketolase-like 1 [TKTL1]), inflammatory markers (cyclooxygenase-2 [COX-2], tumor necrosis factor alpha [TNF-α], interleukin 1 beta [IL1β], nuclear factor kappa-light-chain-enhancer of activated B cells [NFκB]-p65 and antigen Ki-67), and programmed death-ligand 1 (PDL1) were measured by immunohistochemistry. Results: NSCLC patients with adenocarcinoma (ADC) or squamous cell carcinoma (SCC) were included in the study (n = 199). TKT and TKTL1 were significantly higher in ADC than in non-tumor tissue (p < 0.001). Higher values were also observed in NSCLC for all the inflammatory markers, with figures >30% above those of non-tumor tissue (p < 0.001). PDL1 analysis showed a higher percentage of positivity in ADC than in non-tumor tissue (p < 0.001). Multivariate Cox proportional hazards modeling confirmed that high IL1β level in tumor tissue was independently associated with 3-year mortality in NSCLC [HR = 2.05, 95% CI (1.1–3.7), p = 0.019], a relationship driven by ADC subtype. Conclusion: This study confirms an increase in metabolic activity and an inflammatory response in tumor tissue of early stage NSCLC, and a significant relationship between high levels of IL1β in the tumor and poor prognosis in ADC.
Original languageEnglish
Pages (from-to)124-130
JournalLung Cancer
Volume122
DOIs
Publication statusPublished - 1 Aug 2018

Keywords

  • Early-stage
  • IL1β
  • Inflammation
  • NSCLC
  • PDL1
  • Pentose phosphate pathway
  • Prognosis

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