Abstract
Neuroblastoma (NB) accounts for 15% of all childhood cancer deaths. The majority of patients have widespread lymphatic and/or haematogenous metastases at diagnosis, but lymphangiogenesis has not been well documented. Sixty-seven NBs were immunostained for the lymphatic endothelial marker, LYVE-1, and the lymphatic density (LD) and lymphatic invasion (LI), were counted in LYVE-1-expressing lymphatics. LYVE-1-stained lymphatic vessels and LI were present in 26/67 (39%) and 14/67 (21%) of the NBs, respectively. Central LD (CLD) and LI were higher in NBs from stage 4 (p = 0.012, p = 0.004, respectively), high-risk group (p = 0.030, p = 0.002), NBs with high mitosis karyorrhexis index (MKI) (p = 0.011, p = 0.005), unfavourable histology group (p = 0.040, p = 0.017) and distant lymph node metastasis (LNM) (p < 0.001 for each). Marginal LD (MLD) was higher in patients with LNM (p < 0.001). CLD and MLD correlated with LI (p < 0.001 each). Total LYVE-1 protein levels, quantified by a sensitive enzyme-linked immunosorbent assay (n = 55), were also higher in NBs from patients with stage 4 disease (p = 0.046), high-risk group (p = 0.028), MYCN-amplified NBs (p = 0.034) and LNM (p = 0.038). Kaplan–Meier analysis showed that the presence of CLD was associated with both worse OS at 5 years (77% [95% CI: 62–87%] versus 60% [95% CI: 32–80%], p = 0.062) and EFS (74% [95% CI: 58–85%] versus 43% [95% CI: 15–69%], p = 0.070) and LI with OS (71% [95% CI: 57–81%] versus 56% [95% CI: 26–78%], p = 0.055). Significant upregulation of LYVE-1 and the presence of LI in patients with stage 4 and high-risk disease, MYCN-amplification and LNM suggests that LYVE-1 may have value as predictors of outcome.
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Abbreviations
- NB:
-
Neuroblastoma
- LYVE-1:
-
Lymphatic vessel endothelial hyaluronan receptor-1
- LD:
-
Lymphatic density
- CLD:
-
Central lymphatic density
- MLD:
-
Marginal lymphatic density
- LNM:
-
Lymph node metastasis
- LI:
-
Lymphatic invasion
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Acknowledgments
The authors would like to thank Above and Beyond Charities of the University Hospitals Bristol Foundation Trust for their financial support and Ince & Co for their private donation. The authors are grateful to Mr. P.B. Savage for providing laboratory facilities.
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The authors declare that there is no conflict of interest. No part of the article has been published or submitted elsewhere, and there are no financial relationships that may lead to conflict of interest. The manuscript has been read and approved by all authors.
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Relationship between total protein and variables (DOC 43 kb)
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Ramani, P., Dungwa, J.V. & May, M.T. LYVE-1 upregulation and lymphatic invasion correlate with adverse prognostic factors and lymph node metastasis in neuroblastoma. Virchows Arch 460, 183–191 (2012). https://doi.org/10.1007/s00428-011-1190-y
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DOI: https://doi.org/10.1007/s00428-011-1190-y