Oops, you're using an old version of your browser so some of the features on this page may not be displaying properly.

MINIMAL Requirements: Google Chrome 24+Mozilla Firefox 20+Internet Explorer 11Opera 15–18Apple Safari 7SeaMonkey 2.15-2.23

Poster display session: Biomarkers, Gynaecological cancers, Haematological malignancies, Immunotherapy of cancer, New diagnostic tools, NSCLC - early stage, locally advanced & metastatic, SCLC, Thoracic malignancies, Translational research

1771 - Exhaustion of Platelet Kinetics and its Implication in Post-resection HCC Recurrence

Date

20 Oct 2018

Session

Poster display session: Biomarkers, Gynaecological cancers, Haematological malignancies, Immunotherapy of cancer, New diagnostic tools, NSCLC - early stage, locally advanced & metastatic, SCLC, Thoracic malignancies, Translational research

Presenters

Bibek Aryal

Citation

Annals of Oncology (2018) 29 (suppl_8): viii14-viii57. 10.1093/annonc/mdy269

Authors

B. Aryal1, T. Shimizu2, J. Kadono1, A. Furoi1, T. Komokata1, K. Gejima1, M. Yamakuchi2, T. Hashiguchi2, Y. Imoto1

Author affiliations

  • 1 Cardiovascular And Gastroenterological Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, 890-8520 - Kagoshima/JP
  • 2 Department Of Laboratory Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima/JP
More

Resources

Abstract 1771

Background

Platelet activation and the release of various growth factors from platelet granules in response to tumor cell profoundly influence tumor biology. Platelet hyperreactivity in cancer patients is a frequently discussed phenomenon; however, cancer patients were also found to have platelet dysfunction. Considerably less is known about exhaustion of platelet kinetics in cancer.

Methods

In this study, we investigated kinetics of intra-platelet growth factors in hepatocellular carcinoma (HCC) recurrence. We prospectively recruited forty patients diagnosed with HCC who were undergoing liver resection. The patients were followed every three months with imagings after the resection. Platelet fractions were separately isolated before and after a month of radical resection of the tumor. Growth factors/cytokines were measured using enzyme-linked immunosorbent assay (ELISA) kits. Follow-up was standardized to two years. HCC recurrence was diagnosed on the basis of imaging.

Results

Fifteen patients developed post-resection HCC recurrence during 2-year follow-up. The concentrations of platelet-alpha granules secreted growth factors [vascular endothelial growth factor-A (VEGF-A), angiopoietin-1(Ang-1)] and dense granules secreted growth factors (serotonin) were significantly depleted in patients with early HCC recurrence. In addition, the post-resection platelet count was also significantly lower in patients with recurrence than those without recurrence. A combined receiver-operating characteristic (ROC) curve generated to determine the cut-off values for these growth factors yielded both specificity and sensitivity of greater than 80%, area under curve (AUC) > 0.8, and P < 0.001. Furthermore, in the binary logistic regression model, VEGF-A was able to independently predict early HCC recurrence (P < 0.05); accordingly, the disease-free interval was substantially worse in accordance with the exhausted intra-platelet growth factors.

Conclusions

We found a qualitative and quantitative platelet crisis, and its prognostic implication in patients with post-resection HCC recurrence. This study provides an avenue to identify the pathophysiological mechanism of the impaired platelet-kinetics and its relevance in cancer biology.

Clinical trial identification

Legal entity responsible for the study

Bibek Aryal.

Funding

Japan Society for the Promotion of Science (JSPS).

Editorial Acknowledgement

Disclosure

All authors have declared no conflicts of interest.

This site uses cookies. Some of these cookies are essential, while others help us improve your experience by providing insights into how the site is being used.

For more detailed information on the cookies we use, please check our Privacy Policy.

Customise settings