Association of circulating insulin-like growth factor 1 and insulin-like growth factor binding protein 3 with the risk of ovarian cancer: A systematic review and meta-analysis

  • Authors:
    • Qiao Wang
    • Ce Bian
    • Hongling Peng
    • Lei He
    • Xia Zhao
  • View Affiliations

  • Published online on: February 25, 2015     https://doi.org/10.3892/mco.2015.516
  • Pages: 623-628
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Abstract

Insulin‑like growth factor 1 (IGF‑1) and its main binding protein (IGFBP‑3) in blood have been associated with the risk of several types of cancer. However, epidemiological studies have inconsistent results regarding the association of circulating IGF‑1/IGFBP‑3 levels with ovarian cancer risk. A systematic review of the prospective studies was conducted using meta‑analysis to evaluate the existing evidence. Pubmed and Embase databases were searched to identify the relevant studies published before May 1, 2014. Four highly qualified studies with a total of 627 cases and 1,358 controls were finally included in the meta‑analysis. Random effects meta‑analysis was conducted by combining study‑specific odds ratios (ORs) of ovarian cancer for the highest verses lowest exposure levels. A dose‑response association was further assessed by relating the log of ORs for different exposure levels. As a result, the pooled ORs for the highest verses lowest categories of IGF‑1/IGFBP‑3 were 0.85 [95% confidence interval (CI), 0.51‑1.40]/0.78 (95% CI, 0.43‑1.40). In the subgroup analyses, the pooled ORs of IGF‑1/IGFBP‑3 were 1.89 (95% CI, 0.64‑5.59)/1.08 (95% CI, 0.50‑2.32) for the subgroup with cases diagnosed at <55 years, and 0.74 (95% CI, 0.50‑1.08)/0.98 (95% CI, 0.73‑1.33) for the subgroup with cases diagnosed at ≥55 years. No linear association between circulating IGF‑1/IGFBP‑3 levels and ovarian cancer risk was identified. As no significant association of IGF‑1/IGFBP‑3 with ovarian cancer risk was identified in the present meta‑analysis of existing studies, more studies with greater quality are required in the future.
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May-2015
Volume 3 Issue 3

Print ISSN: 2049-9450
Online ISSN:2049-9469

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Spandidos Publications style
Wang Q, Bian C, Peng H, He L and Zhao X: Association of circulating insulin-like growth factor 1 and insulin-like growth factor binding protein 3 with the risk of ovarian cancer: A systematic review and meta-analysis. Mol Clin Oncol 3: 623-628, 2015.
APA
Wang, Q., Bian, C., Peng, H., He, L., & Zhao, X. (2015). Association of circulating insulin-like growth factor 1 and insulin-like growth factor binding protein 3 with the risk of ovarian cancer: A systematic review and meta-analysis. Molecular and Clinical Oncology, 3, 623-628. https://doi.org/10.3892/mco.2015.516
MLA
Wang, Q., Bian, C., Peng, H., He, L., Zhao, X."Association of circulating insulin-like growth factor 1 and insulin-like growth factor binding protein 3 with the risk of ovarian cancer: A systematic review and meta-analysis". Molecular and Clinical Oncology 3.3 (2015): 623-628.
Chicago
Wang, Q., Bian, C., Peng, H., He, L., Zhao, X."Association of circulating insulin-like growth factor 1 and insulin-like growth factor binding protein 3 with the risk of ovarian cancer: A systematic review and meta-analysis". Molecular and Clinical Oncology 3, no. 3 (2015): 623-628. https://doi.org/10.3892/mco.2015.516