Genotype analysis of the NRF2 gene mutation in lung cancer

  • Authors:
    • Hidefumi Sasaki
    • Ayumi Suzuki
    • Masayuki Shitara
    • Yu Hikosaka
    • Katsuhiro Okuda
    • Satoru Moriyama
    • Motoki Yano
    • Yoshitaka Fujii
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  • Published online on: March 28, 2013     https://doi.org/10.3892/ijmm.2013.1324
  • Pages: 1135-1138
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Abstract

Nuclear factor (erythroid derived 2)-like 2 (NRF2, gene name NFE2L2) gene mutations have been previously identified in lung cancers. The constitutive activation of NRF2 resulting from gene mutations has been correlated with the poor prognosis of patients with squamous cell lung cancer. However, DNA sequencing using PCR methods described to date is time-consuming and requires significant quantities of DNA. Thus, this existing approach is not suitable for a routine pre-therapeutic screening program. We genotyped the NRF2 gene mutation status in 262 surgically treated lung cancer cases using LightCycler analysis. The presence of the NRF2 gene mutation was confirmed by direct sequencing. We detected 6 cases (2.3%) with NRF2 gene mutations in our cohort, particularly smokers (P=0.04) with squamous histology (P=0.0001). NRF2 gene mutations were present in 10% (6/60) of the lung squamous cell carcinoma (SqCC) cases. The NRF2 gene mutation was exclusive of epidermal growth factor receptor mutations. The NRF2 gene mutation occurred with a tendency towards a higher frequency in male patients. Patients with the NRF2 gene mutation (n=22, 11 succumbed to disease) had a significantly worse prognosis when compared with the patients with the wild-type NRF2 gene (n=521, 98 succumbed to disease) from a larger cohort study (log-rank test, P<0.0001) even upon multivariate analysis. In our study, NRF2 gene mutations played a role in the prognosis of patients with SqCC of the lung.
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May 2013
Volume 31 Issue 5

Print ISSN: 1107-3756
Online ISSN:1791-244X

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Spandidos Publications style
Sasaki H, Suzuki A, Shitara M, Hikosaka Y, Okuda K, Moriyama S, Yano M and Fujii Y: Genotype analysis of the NRF2 gene mutation in lung cancer. Int J Mol Med 31: 1135-1138, 2013
APA
Sasaki, H., Suzuki, A., Shitara, M., Hikosaka, Y., Okuda, K., Moriyama, S. ... Fujii, Y. (2013). Genotype analysis of the NRF2 gene mutation in lung cancer. International Journal of Molecular Medicine, 31, 1135-1138. https://doi.org/10.3892/ijmm.2013.1324
MLA
Sasaki, H., Suzuki, A., Shitara, M., Hikosaka, Y., Okuda, K., Moriyama, S., Yano, M., Fujii, Y."Genotype analysis of the NRF2 gene mutation in lung cancer". International Journal of Molecular Medicine 31.5 (2013): 1135-1138.
Chicago
Sasaki, H., Suzuki, A., Shitara, M., Hikosaka, Y., Okuda, K., Moriyama, S., Yano, M., Fujii, Y."Genotype analysis of the NRF2 gene mutation in lung cancer". International Journal of Molecular Medicine 31, no. 5 (2013): 1135-1138. https://doi.org/10.3892/ijmm.2013.1324