Tumor Biology

, Volume 37, Issue 3, pp 3469–3477 | Cite as

Genetic variants in the ITGB6 gene is associated with the risk of radiation pneumonitis in lung cancer patients treated with thoracic radiation therapy

  • Minxiao Yi
  • Yang Tang
  • Bo Liu
  • Qianxia Li
  • Xiao Zhou
  • Shiying Yu
  • Shengling Fu
  • Yixin Cai
  • Xianglin Yuan
Original Article

Abstract

The αvβ6 integrin is a cell surface adhesion molecule that plays critical roles in the injury and inflammation processes. We hypothesized that polymorphisms in αvβ6 integrin genes (ITGAV and ITGB6) might be associated with the risk of radiation pneumonitis (RP) in lung cancer patients treated with thoracic radiation. We genotyped three potentially functional αvβ6 integrin single-nucleotide polymorphisms (rs1839123 and rs4129787 in ITGAV, and rs4665162 in ITGB6) and found that the genotypes of rs4665162 single-nucleotide polymorphisms were predictors of RP development (for grade ≥2 RP, HR = 1.505, 95 % CI 1.069–2.119, P = 0.019; for grade ≥3 RP, HR = 3.006, 95 % CI 1.431–6.313, P = 0.004). Our results showed that AG/GG genotypes of ITGB6 rs4665162 gene were associated with a higher risk of RP in patients with lung cancer receiving radiotherapy and thus may serve as a reliable predictor of RP. Further studies will be needed to confirm these findings.

Keywords

ITGB6 Single-nucleotide polymorphism Radiation pneumonitis Lung cancer 

Notes

Compliance with ethical standards

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

Fund

This study was funded by National Natural Science Foundation of China (grant numbers 81272492 and 81472921).

Conflicts of interest

None.

Informed consent

Informed consent was obtained from all individual participants included in the study.

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Copyright information

© International Society of Oncology and BioMarkers (ISOBM) 2015

Authors and Affiliations

  • Minxiao Yi
    • 1
  • Yang Tang
    • 1
  • Bo Liu
    • 1
  • Qianxia Li
    • 1
  • Xiao Zhou
    • 1
  • Shiying Yu
    • 1
  • Shengling Fu
    • 2
  • Yixin Cai
    • 2
  • Xianglin Yuan
    • 1
  1. 1.Department of Oncology, Tongji HospitalHuazhong University of Science and TechnologyWuhanChina
  2. 2.Department of Thoracic Surgery, Tongji HospitalHuazhong University of Science and TechnologyWuhanChina

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