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자료유형
학술저널
저자정보
Park, Dong Il (Division of Pulmonary, Department of Internal Medicine, Chungnam National University Hospital) Kim, Sun Young (Division of Pulmonary, Department of Internal Medicine, Chungnam National University Hospital) Kim, Ju Ock (Division of Pulmonary, Department of Internal Medicine, Chungnam National University Hospital) Jung, Sung Soo (Division of Pulmonary, Department of Internal Medicine, Chungnam National University Hospital) Park, Hee Sun (Division of Pulmonary, Department of Internal Medicine, Chungnam National University Hospital) Moon, Jae Young (Division of Pulmonary, Department of Internal Medicine, Chungnam National University Hospital) Chung, Chae Uk (Division of Pulmonary, Department of Internal Medicine, Chungnam National University Hospital) Kim, Song Soo (Department of Radiology, Chungnam National University Hospital) Seo, Jae Hee (Department of Preventive Medicine, Chungnam National University Hospital) Lee, Jeong Eun (Division of Pulmonary, Department of Internal Medicine, Chungnam National University Hospital)
저널정보
대한결핵 및 호흡기학회 Tuberculosis and Respiratory Diseases 결핵 및 호흡기 질환 제78권 제4호
발행연도
2015.1
수록면
315 - 320 (6page)

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Background: The efficacy of epidermal growth factor receptor tyrosine kinase inhibitor (EGFR-TKI) therapy can be measured based on the rate of treatment response, based on the Response Evaluation Criteria in Solid Tumors (RECIST) criteria or progression-free survival (PFS). However, there are some patients harboring sensitive EGFR mutations who responded poorly to EGFR-TKI therapy. In addition, there is variability in the PFS after EGFR-TKI treatment. Methods: We performed a retrospective analysis of the medical records of 85 patients with non-small cell lung cancer, who had achieved a stable disease or better response at the first evaluation of treatment response, after receiving a 2-month course of gefitinib. We calculated the tumor shrinkage rate (TSR) by measuring the longest and perpendicular diameter of the main mass on computed tomography before, and 2 months after, gefitinib therapy. Results: There was a significant positive correlation between the TSR and PFS (R=0.373, p=0.010). In addition, a simple linear regression analysis showed that the TSR might be an indicator for the PFS ($B{\pm}standard$ error, $244.54{\pm}66.79$; p=0.001). On univariate analysis, the sex, histologic type, smoking history and the number of prior chemotherapy regimens, were significant prognostic factors. On multivariate regression analysis, both the TSR (${\beta}$=0.257, p=0.029) and adenocarcinoma (${\beta}$=0.323, p=0.005) were independent prognostic factors for PFS. Conclusion: Our results showed that the TSR might be an early prognostic indicator for PFS in patients receiving EGFRTKI therapy.

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