Abstract
The objective of this study was to validate the diagnostic and clinical role of four protein products of genes previously found to be differentially expressed in uterine low-grade endometrial stromal sarcoma (LG-ESS) compared to uterine leiomyosarcoma (LMS). Protein expression by immunohistochemistry of transgelin (TGLN), neuron navigator-2 (NAV2), fatty acid binding protein-3 (FABP3), and cyclin D2 (CCND2) was analyzed in 305 uterine sarcomas (231 LMS, 74 LG-ESS). Expression was analyzed for association with clinicopathologic parameters and survival. TGLN (p < 0.001), NAV2 (p < 0.001), and FABP3 (p = 0.005) were overexpressed in LMS compared to LG-ESS, whereas nuclear CCND2 (p < 0.001) was overexpressed in LG-ESS. NAV2 expression was associated with shorter overall survival in patients with LMS (p = 0.037), whereas nuclear CCND2 expression in LG-ESS was significantly related to longer survival (p = 0.012) in univariate analysis. Nuclear CCND2 expression was an independent prognosticator in Cox multivariate analysis (p = 0.023). In conclusion, TGLN, FABP3, NAV2, and nuclear CCND2 aid in differentiating LG-ESS from LMS. NAV2 and CCND2 are novel candidate prognostic markers in LMS and LG-ESS, respectively.
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This work was supported by a grant from the National Sarcoma Foundation at the Norwegian Radium Hospital.
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The study was approved by the regional committee for medical research ethics in Norway.
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Davidson, B., Hellesylt, E., Holth, A. et al. Neuron navigator-2 and cyclin D2 are new candidate prognostic markers in uterine sarcoma. Virchows Arch 471, 355–362 (2017). https://doi.org/10.1007/s00428-017-2172-5
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DOI: https://doi.org/10.1007/s00428-017-2172-5