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Prognostic impact of angiopoietin-2 in multiple myeloma

  • Original Article – Clinical Oncology
  • Published:
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Abstract

Purpose

Angiogenesis is an essential process for the expansion of multiple myeloma (MM). Angiopoietin-2 (Ang-2), Ang-1 and their receptor possess important roles in this procedure. The aim of the study was to measure serum levels of Ang-2 along with known markers of angiogenesis and to estimate their prognostic impact on the survival.

Methods

Bone marrow microvascular density (MVD), estimated by CD31, and circulating levels of known angiogenic factors Ang-2, interleukin-6, soluble CD105 and platelet-derived growth factor-AB, measured by ELISA, were measured in 77 newly diagnosed patients with active MM and in 57 of them who responded to chemotherapy.

Results

All measured parameters were increased in MM patients, were also increasing in advanced disease and decreased after effective treatment. Ang-2 correlated positively with the other angiogenic factors and MVD. Moreover, Ang-2 values above the median were accompanied by worse survival.

Conclusion

Ang-2 correlates strongly with the angiogenic process and its serum levels are importantly prognostic for survival, highlighting the role of angiopoietins pathway in the biology of MM.

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Ethical standard

This study has been approved by our institute ethics committee and has therefore been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments. All persons gave their informed consent prior to their inclusion in the study.

Conflict of interest

We declare that we have no conflict of interest.

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Correspondence to Michael G. Alexandrakis.

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Pappa, C.A., Alexandrakis, M.G., Boula, A. et al. Prognostic impact of angiopoietin-2 in multiple myeloma. J Cancer Res Clin Oncol 140, 1801–1805 (2014). https://doi.org/10.1007/s00432-014-1731-2

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  • DOI: https://doi.org/10.1007/s00432-014-1731-2

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