Independent prognostic value of hypoxia-inducible factor 1-alpha expression in small cell lung cancer

Chang Sheng Lin, Tu Chen Liu, Ming Tsung Lee, Shun Fa Yang, Thomas Chang Yao Tsao*

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

18 Scopus citations

Abstract

Hypoxia is an important factor in tumor angiogenesis, metastasis, and resistance to chemotherapy or radiotherapy, and may be an indicator of poor prognosis. The transcription factor hypoxia-inducible factor 1 (HIF-1) is the key regulator of the hypoxic state. This study was designed to evaluate the prognostic value of HIF-1α expression in small cell lung cancer (SCLC). Forty-three paraffin-embedded biopsy materials were examined using immunohistochemistry. Our results indicated that the expression of HIF-1α was high in males, and patients with poor Eastern Cooperative Oncology Group (ECOG) performance status and metastases. To elucidate the prognostic value of HIF-1α expression, Kaplan-Meier analysis was carried out and the results showed that patients with high HIF-1α expression had a poorer prognosis than patients with low expression of HIF-1α. After adjusting clinical parameters by the Cox proportional hazards model, our results demonstrated that high HIF-1α expression is an independent prognostic factor for SCLC with a 39.2-fold risk of death (p<0.003). In conclusion, we have provided evidence that HIF-1α expression has significant value in predicting survival of patients with SCLC and is an independent prognostic factor beyond ECOG performance and metastasis status.

Original languageEnglish
Pages (from-to)785-790
Number of pages6
JournalInternational Journal of Medical Sciences
Volume14
Issue number8
DOIs
StatePublished - 2017
Externally publishedYes

Bibliographical note

Publisher Copyright:
© Ivyspring International Publisher.

Keywords

  • Hypoxia-inducible factor-1 alpha
  • Immunohistochemistry
  • Small cell lung cancer
  • Survival

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