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Gene linked to worse outcomes for melanoma
Date:2/19/2013

Scientists at Queen Mary, University of London have identified a gene present in some melanoma which appears to make the tumour cells more resistant to treatment, according to research published today in the Journal of Experimental Medicine.

The scientists discovered that the gene TP63 is unexpectedly expressed in some melanoma and correlates significantly with a worse prognosis. It is hoped this new understanding of what makes some melanoma cells so difficult to kill will help inform the development of new therapies.

Melanoma is a form of skin cancer which usually appears on the body as a new or changing mole. Almost 13,000 people in the UK are diagnosed with melanoma each year. While it is less common than other forms of skin cancer around five per cent of skin cancers are melanoma it results in around 75 per cent of skin cancer related deaths (more than 2000 deaths a year in the UK).

The number of cases of melanoma is rising faster than almost any other cancer and one of the main risk factors is ultraviolet light, which comes from the sun or sunbeds. While early-stage melanomas can often be removed by surgery, more advanced melanomas are much harder to treat.

Dr Daniele Bergamaschi, a senior lecturer in cutaneous research at Queen Mary said: "For most patients where the melanoma has spread beyond the skin, there are few effective treatments and overall survival rates for this disease have not changed much over the past 30 years.

"To develop better treatments we need to understand the basic biology underpinning why these cells are so resistant to being killed."

The researchers analysed 156 melanoma tissue samples from 129 individuals for expression of the protein p63 the protein encoded by the gene TP63. They found that p63 was expressed in more than 50 per cent of the samples (58% of primary metastatic samples, 53% of recurrent samples and 66% of metastatic samples) and correlated significantly with death from melanoma.
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Contact: Katrina Coutts
k.coutts@qmul.ac.uk
Queen Mary, University of London
Source:Eurekalert

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