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Relationship between miR‑7 expression and treatment outcomes with gefitinib in non‑small cell lung cancer

  • Authors:
    • Kun Mou
    • Weiwei Gu
    • Cuihua Gu
    • Jinzhong Zhang
    • Wenjie Qwang
    • Gang Ren
    • Jing Tian
  • View Affiliations / Copyright

    Affiliations: Department of Oncology, People's Hospital of Laiwu City, Laiwu Hospital Affiliated to Taishan Medical College, Laiwu, Shandong 271100, P.R. China, Department of Internal Medicine, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong 250117, P.R. China
    Copyright: © Mou et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 4613-4617
    |
    Published online on: October 18, 2016
       https://doi.org/10.3892/ol.2016.5290
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Abstract

The aim of the present study was to assess the effects of gefitinib chemotherapy on the serum levels of miR‑7 in patients with non‑small cell lung cancer (NSCLC). A total of 126 patients were enrolled in the present study (stage I‑II, n=54 and stage III‑IV, n=72). Patients with stage I‑II NSCLC underwent surgery in combination with gefitinib chemotherapy, whereas only gefitinib chemotherapy was administered to patients with stage III‑IV disease. Serum levels of miR‑7 before and after treatment were measured with quantitative polymerase chain reaction using fluorogenic probes, and miR‑7 positivity and scoring in resected specimens were determined by immunohistochemistry. The number of miR‑7‑positive cases and the number of cases with higher miR‑7 scores were significantly lower among patients with stage I‑II NSCLC than those with stage III‑IV disease. Additionally, serum levels of miR‑7 before and after intervention were lower in stage I‑II than in stage III‑IV NSCLC cases. Serum levels of miR‑7 after treatment were significantly lower than those before intervention in the two groups. The treatment success rate was significantly higher in miR‑7‑negative patients than in miR‑7‑positive patients in the two patient groups. Adverse event rates in miR‑7‑negative and ‑positive patients were comparable between the groups. Among those with stage III‑IV NSCLC, the survival rate of miR‑7‑positive patients was significantly lower than that of miR‑7‑negative patients. Conversely, among those with I‑II NSCLC, the progression‑free survival and median survival time of miR‑7‑positive patients were significantly lower than those of miR‑7‑negative patients. Our findings suggest that serum and expression levels of miR‑7 in the tissue were closely associated with tumor staging and the therapeutic effects of gefitinib in NSCLC.
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Copy and paste a formatted citation
Spandidos Publications style
Mou K, Gu W, Gu C, Zhang J, Qwang W, Ren G and Tian J: Relationship between miR‑7 expression and treatment outcomes with gefitinib in non‑small cell lung cancer. Oncol Lett 12: 4613-4617, 2016.
APA
Mou, K., Gu, W., Gu, C., Zhang, J., Qwang, W., Ren, G., & Tian, J. (2016). Relationship between miR‑7 expression and treatment outcomes with gefitinib in non‑small cell lung cancer. Oncology Letters, 12, 4613-4617. https://doi.org/10.3892/ol.2016.5290
MLA
Mou, K., Gu, W., Gu, C., Zhang, J., Qwang, W., Ren, G., Tian, J."Relationship between miR‑7 expression and treatment outcomes with gefitinib in non‑small cell lung cancer". Oncology Letters 12.6 (2016): 4613-4617.
Chicago
Mou, K., Gu, W., Gu, C., Zhang, J., Qwang, W., Ren, G., Tian, J."Relationship between miR‑7 expression and treatment outcomes with gefitinib in non‑small cell lung cancer". Oncology Letters 12, no. 6 (2016): 4613-4617. https://doi.org/10.3892/ol.2016.5290
Copy and paste a formatted citation
x
Spandidos Publications style
Mou K, Gu W, Gu C, Zhang J, Qwang W, Ren G and Tian J: Relationship between miR‑7 expression and treatment outcomes with gefitinib in non‑small cell lung cancer. Oncol Lett 12: 4613-4617, 2016.
APA
Mou, K., Gu, W., Gu, C., Zhang, J., Qwang, W., Ren, G., & Tian, J. (2016). Relationship between miR‑7 expression and treatment outcomes with gefitinib in non‑small cell lung cancer. Oncology Letters, 12, 4613-4617. https://doi.org/10.3892/ol.2016.5290
MLA
Mou, K., Gu, W., Gu, C., Zhang, J., Qwang, W., Ren, G., Tian, J."Relationship between miR‑7 expression and treatment outcomes with gefitinib in non‑small cell lung cancer". Oncology Letters 12.6 (2016): 4613-4617.
Chicago
Mou, K., Gu, W., Gu, C., Zhang, J., Qwang, W., Ren, G., Tian, J."Relationship between miR‑7 expression and treatment outcomes with gefitinib in non‑small cell lung cancer". Oncology Letters 12, no. 6 (2016): 4613-4617. https://doi.org/10.3892/ol.2016.5290
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