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Immunotherapy could help tackle tough liver cancer

Date:
April 11, 2014
Source:
European Association for the Study of the Liver
Summary:
Significant new data indicate that liver cancer may be treated by adoptive T cell therapy. This new therapeutic approach in the treatment of HCC could be very important as without treatment the 5 year survival rate is just 5%. Globally, HCC accounts for 746,000 deaths, and in the UK alone is responsible for over 4,000 deaths per year.

Significant new data presented today at the International Liver Congress™ 2014 indicate that liver cancer (Hepatocellular Carcinoma (HCC)) may be treated by adoptive T-cell therapy.

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This new therapeutic approach in the treatment of HCC could be very important as without treatment the 5 year survival rate is just 5%. Globally, HCC accounts for 746,000 deaths, and in the UK alone is responsible for over 4,000 deaths per year.

Glypican-3 (GPC3) is a tumour associated antigen expressed in up to 70% of HCC but not in healthy human tissue. Isolating GPC3-specific T-cell receptors and expressing them on patient's T-cells can help treat HCC, as these T cells can recognise and eliminate GPC3-postive HCC.

The study detected and expanded MHC-multimer-positive CD8+ T-cells specific for targeted GPC3 epitopes and grew T-cell clones. From these clones, the most specific and active T-cell receptor was isolated. When this T-cell receptor was expressed on donor T cells it conferred specificity for GPC3, the HCC-associated antigen. Thus, it enables HLA-A2+ patient's T cells to specifically kill GPC3+ HCC.

Systemic treatments for advanced stage HCC are constantly evolving and current approaches include drug treatment with sorafenib -- yet the current standard of care still does not offer a strong enough prognosis for patients. Liver transplant is an option for only 10 -15% of HCC carriers diagnosed at an early stage and therefore the importance of other treatment options for patients is critical. This is a treatment gap that adoptive T-cell therapy could potentially fill.


Story Source:

The above story is based on materials provided by European Association for the Study of the Liver. Note: Materials may be edited for content and length.


Cite This Page:

European Association for the Study of the Liver. "Immunotherapy could help tackle tough liver cancer." ScienceDaily. ScienceDaily, 11 April 2014. <www.sciencedaily.com/releases/2014/04/140411091838.htm>.
European Association for the Study of the Liver. (2014, April 11). Immunotherapy could help tackle tough liver cancer. ScienceDaily. Retrieved October 25, 2014 from www.sciencedaily.com/releases/2014/04/140411091838.htm
European Association for the Study of the Liver. "Immunotherapy could help tackle tough liver cancer." ScienceDaily. www.sciencedaily.com/releases/2014/04/140411091838.htm (accessed October 25, 2014).

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