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Prognostic factors in small cell lung cancer: a new prognostic index in Korean patients

 Hong S.  ;  Cho B.C.  ;  Choi H.J.  ;  Jung M.  ;  Lee S.H.  ;  Park K.S.  ;  Kim S.K.  ;  Kim J.H. 
 Oncology, Vol.79(3-4) : 293-300, 2010 
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OBJECTIVE: The aims of this study were to identify prognostic factors for overall survival (OS) in patients with small cell lung cancer (SCLC) and to construct a prognostic index on the basis of their expected OS. Long-term survivors were also given special attention. METHODS: We retrospectively analyzed 295 patients diagnosed with SCLC from January 2002 to September 2007 at the Severance Hospital, Seoul, Republic of Korea. Patient history was reviewed regarding both clinical and tumor-related markers, and treatment-related factors were also evaluated. RESULTS: There were 131 (44.4%) patients with limited disease (LD) and 164 (55.6%) with extensive disease (ED). Median follow-up lasted 9.4 months. Objective response to chemotherapy was 66.8%. The median survival time (MST) was 11.2 months in all patients, 20.4 months in LD patients, and 7.7 months in ED patients. The median progression-free survival was 9.4 months. Independent prognostic factors for overall survival (OS) were extent of disease, performance status, and CYFRA 21-1 level. We classified all patients into four groups based on the results of multivariate analysis using classification and regression tree analysis. Median survival times were 22.7, 13.7, 8.5, and 3.2 months, respectively. A total of 51 (17.3%) patients from the entire study population were evaluated for long-term survival, which was defined as survival >2 years. Their MST was 43.1 months, and extent of disease, performance status, and CYFRA 21-1 were independent prognostic factors for long-term survival. CONCLUSIONS: We confirmed the well-known prognosticators, disease extent and performance status, in our patients, but further identified CYFRA 21-1 as independent prognostic factor. A prognostic index was constructed to create four classifications of SCLC considering these variables
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1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Pharmacology (약리학교실) > 1. Journal Papers
Yonsei Authors
김세규(Kim, Se Kyu)
김주항(Kim, Joo Hang)
박경수(Park, Kyungsoo) ORCID logo https://orcid.org/0000-0002-6972-1143
이수현(Lee, Soo Hyeon)
정민규(Jung, Min Kyu) ORCID logo https://orcid.org/0000-0001-8281-3387
조병철(Cho, Byoung Chul) ORCID logo https://orcid.org/0000-0002-5562-270X
최혜진(Choi, Hye Jin) ORCID logo https://orcid.org/0000-0001-5917-1400
홍수정(Hong, Soo Jung)
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