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Michail Liontos



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    P1.09 - Pathology (Not CME Accredited Session) (ID 941)

    • Event: WCLC 2018
    • Type: Poster Viewing in the Exhibit Hall
    • Track:
    • Presentations: 2
    • Moderators:
    • Coordinates: 9/24/2018, 16:45 - 18:00, Exhibit Hall
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      P1.09-35 - Clinical Impact of Systematic Inflammation and Histologic Grade in Non Small Cell Lung Carcinoma (NSCLC) (ID 14389)

      16:45 - 18:00  |  Author(s): Michail Liontos

      • Abstract
      • Slides

      Background

      Tumor grade is an important factor of cancer outcome. Systematic inflammation has been associated with tumorigenesis and tumor aggressiveness and prognosis in several human malignancies. Cancer cells create an inflammatory peritumoral microenviroment by releasing a number of cytokines.

      a9ded1e5ce5d75814730bb4caaf49419 Method

      In total, 100 patients (88 males) with histologically proven NSCLC and no signs of active infection were evaluated. Tumor grade was examined and systematic inflammatory response was assessed by circulating levels of C-reactive protein (CRP), albumin, ferritin, transferring and the modified Glasgow Prognostic Score (mGPS). Patients were followed up and survival data were subsequently collected. Associations with clinicopathological, histological parameters and patients’ survival were studied.

      4c3880bb027f159e801041b1021e88e8 Result

      Histological grade was associated with tumor size, the presence of pathological lymph nodes, organ metastases and advanced disease stage (p=0.010, p<0.001, p<0.001 and p<0.001, respectively). There was a trend of higher histological grade in adenocarcinomas compared to squamous carcinomas (p=0.263). High tumor histological grade was also significantly associated with elevated serum CRP levels (p<0.001), hypoalbuminemia (p=0.009), elevated ferritin levels (p=0.049), abnormal mGPS (p=0.006) and a trend for reduced transferrin levels (p=0.101). In multivariate analysis, histological grade, stage, ECOG performance status and mGPS were identified as independent prognostic factors for overall survival (Cox regression analysis, p=0.002, p=0.001, p=0.010 and p=0.019, respectively).

      8eea62084ca7e541d918e823422bd82e Conclusion

      Our data support the association of tumour grade with the presence of systemic inflammation; two well described negative prognostic factors for NSCLC. To our knowledge this is the first time that these factors are associated with each other giving more information about the prognosis in patients with NSCLC.

      6f8b794f3246b0c1e1780bb4d4d5dc53

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      P1.09-36 - Clinical Significance of Cannabinoid Receptor CB2 Expression in Non Small Cell Lung Cancer (NSCLC) (ID 14370)

      16:45 - 18:00  |  Author(s): Michail Liontos

      • Abstract
      • Slides

      Background

      Cannabinoid receptor CB2 expression has been identified to be high in various malignant neoplasms and it is involved in the pathophysiological mechanisms related to carcinogenesis. Lung cancer is an important health problem and new biomarkers are needed for better patients’ stratification. This study was conducted to elucidate the clinical significance of cannabinoid receptor CB2 expression in NSCLC.

      a9ded1e5ce5d75814730bb4caaf49419 Method

      Cannabinoid receptor CB2 expression was evaluated immunohistochemically on Tissue MicroArrays (TMAs) of 79 tissue samples from NSCLC patients and it was correlated to clinicopathological parameters and overall survival (OS).

      4c3880bb027f159e801041b1021e88e8 Result

      79 NSCLC patients (48 adenocarcnomas and 31 squamous carcinomas) were studied. Enhanced cannabinoid receptor CB2 expression was observed in 20/79 (25.3 % ) NSCLC patients. In particular, enhanced cannabinoid receptor CB2 expression was found in 9 out of 48 (18.8%) adenocarcinomas and in 11 out of 31 (35.5%) of squamous cell carcinomas. Cannabinoid receptor CB2 expression was significantly associated with sex, smoking history and histological type (p=0.019, p=0.022 and p=0.032, respectively). In adenocarcinomas, cannabinoid receptor CB2 expression was correlated with overall survival (log-rank test, p=0.031), while there was a trend for correlation with tumor size (p=0.091) and lymph node metastasis (p=0.074). However, in squamous carcinomas cannabinoid receptor CB2 expression was not found to be significantly correlated with any of clinicopathological parameters or survival.

      8eea62084ca7e541d918e823422bd82e Conclusion

      Cannabinoid receptor CB2 receptor may be involved in NSCLC malignant tranformation and growth particularly in adenocarcinomas. Therefore, cannabinoid receptor CB2 receptor could be considered as a potential biomarker or a therapeutic target in NSCLC. More studies needed to elucidate the role of this molecule in NSCLC.

      6f8b794f3246b0c1e1780bb4d4d5dc53

      Only Active Members that have purchased this event or have registered via an access code will be able to view this content. To view this presentation, please login or select "Add to Cart" and proceed to checkout.