The frequency and impact of FGFR1 amplification on clinical outcomes in Korean patients with small cell lung cancer

Ji Soo Park, Jae Seok Lee, Eun Young Kim, Ji Ye Jung, Se Kyu Kim, Joon Chang, Dae Joon Kim, Chang Young Lee, Inkyung Jung, Joo Hang Kim, Hye Ryun Kim, Yong Wha Moon, Hyo Song Kim, Byoung Chul Cho, Hyo Sup Shim

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


Objectives: Fibroblast growth factor receptor 1 (FGFR1) plays a critical role in many human cancers. We tried to identify the frequency of FGFR1 amplifications among Korean patients with small cell lung cancer (SCLC). Additionally, we examined the clinical significance of FGFR1 amplifications for overall survival (OS) and progression-free survival (PFS) among SCLC patients who received standard chemotherapies. Materials and methods: Tumor tissues from 158 Korean patients diagnosed with SCLC from September 2009 to February 2013 were collected and analyzed using an FGFR1 FISH assay with a probe that hybridized to chromosome region 8p12-8p11.23 (Abbott Molecular, Abbott Park, IL). Results and conclusion: FGFR1 amplification was detected in three patients (1.9%) harboring extensive disease (ED). A multivariate analysis showed that among the patients with ED, FGFR1 amplification was associated with shorter disease-free survival to first-line chemotherapy with etoposide plus cisplatin or carboplatin (hazard ratio [HR] = 7.1; 95% confidence interval [CI] = 2.0-25.4; P = 0.003). The median overall survival time of the patients with ED was 8.2 and 10.2 months among patients with and without FGFR1 amplification, respectively (P = 0.37). Although FGFR1 amplification is rare in SCLC compared to non-small cell lung cancer or other malignancies with squamous histology, it is associated with poor survival following standard chemotherapy in SCLC. Further studies in large cohorts of patients with SCLC are needed to verify these results. Our results imply that FGFR1 may be a potential therapeutic target in SCLC and it could be confirmed in a clinical trial.

Original languageEnglish
Pages (from-to)325-331
Number of pages7
JournalLung Cancer
Issue number3
Publication statusPublished - 2015 Jun 1

Bibliographical note

Funding Information:
This study was supported by a grant from the Korea Health Technology R&D Project, Ministry of Health & Welfare, Republic of Korea ( HI12C1440 , B.C. Cho), and a faculty research grant of Yonsei University College of Medicine for 2012 and 2013 ( 6-2012-0043 ; 6-2013-0016 to H.S. Shim).

Publisher Copyright:
© 2015 Elsevier Ireland Ltd.

All Science Journal Classification (ASJC) codes

  • Oncology
  • Pulmonary and Respiratory Medicine
  • Cancer Research


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