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Y. Hayashi



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    MINI 32 - Topics in Localized Lung Cancer (ID 166)

    • Event: WCLC 2015
    • Type: Mini Oral
    • Track: Treatment of Localized Disease - NSCLC
    • Presentations: 1
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      MINI32.06 - Clinical Impacts of Tumor Hypoxia Imaging with FAZA and ATSM PET in NSCLC (ID 182)

      19:00 - 19:05  |  Author(s): Y. Hayashi

      • Abstract
      • Presentation
      • Slides

      Background:
      The noninvasive dynamic characterization of hypoxia using molecular imaging approaches is supportive for evaluation of malignant tumor. In this study, we evaluated the clinicopathological impact of newly developed tumor hypoxia PET tests for localized non-small cell lung cancer (NSCLC).

      Methods:
      Forty-nine patients with localized NSCLC were enrolled[F1] [木下智成2] . They underwent chest hypoxia PET tests, namely [18]F-fluoroazomycin arabinoside (FAZA) and/or [62]Cu-diacetyl-bis (N4)-methylsemithiocarbazone (ATSM) PET in addition to routine whole-body [18]F-fluorodeoxyglucose (FDG) PET before treatment. Uptake of hypoxic tracers was quantified by calculating maximum standard uptake values (SUVmax) and tumor muscle ratios (TMR).

      Results:
      The uptake of [18]F-FAZA were in positive proportion to that of [62]Cu-ATSM (P < 0.05). Neutrophil lymphocyte ratio and tumor size were significantly correlated with uptake both in [18]F-FAZA (P < 0.01) and [62]Cu-ATSM (P < 0.05 in [18]F-FAZA and [62]Cu-ATSM). Pathologically, the case with vascular or pleural invasion, which indicate tumor malignancy, had higher uptake of [18]F-FAZA (P < 0.05). Those accumulations increased according to advanced TNM staging (P < 0.05). The patient with higher uptake of these tracers significantly had a poorer overall survival (P < 0.01 in [18]F-FAZA and P < 0.05 in [62]Cu-ATSM), and progression-free survival (P < 0.01 in [18]F-FAZA and P < 0.05 in [62]Cu-ATSM).

      Conclusion:
      [18]F-FAZA and [62]Cu-ATSM can provide useful information on tumor malignancy and prognosis, and might contribute toward guiding individualization of treatment of localized NSCLC. Figure 1Figure 2





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