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Mutations in gene essential for cell regulation cause kidney cancer in children

Date:
August 7, 2014
Source:
Institute of Cancer Research
Summary:
Mutations in a gene that helps regulate when genes are switched on and off in cells have been found to cause rare cases of Wilms tumor, the most common kidney cancer occurring in children. Wilms tumour affects around one in 10,000 children and usually develops before the age of five years. Treatment of Wilms tumour is very successful, with 90 per cent of children being cured.

Mutations in a gene that helps regulate when genes are switched on and off in cells have been found to cause rare cases of Wilms tumour, the most common kidney cancer occurring in children.

A study led by scientists at The Institute of Cancer Research, London, identified mutations in the CTR9 gene in six children with Wilms tumour.

Wilms tumour affects around one in 10,000 children and usually develops before the age of five years. Treatment of Wilms tumour is very successful, with 90 per cent of children being cured.

Usually Wilms tumour only affects one child in a family, but very occasionally more than one child in a family develops the cancer. When this happens it indicates that hereditary genetic factors are likely to be involved.

The researchers studied the genes of 35 families with more than one case of Wilms tumour, recruited to the study through a network of collaborators from across the world. In six children, from three different families, they found CTR9 mutations that stopped the gene working properly. No similar mutations were present in 1,000 individuals without Wilms tumour.

The research is published in the journal Nature Communications and is part of the Factors Associated with Childhood Tumours Study, which is funded by the Wellcome Trust, and aims to identify genetic causes of childhood cancers. The study was also supported by Cancer Research UK.

CTR9 is part of a multi-protein complex, known as PAF1, which regulates when genes are switched on and off. The PAF1 complex has many essential diverse roles in controlling cellular processes and organ development in the embryo. Interestingly, mutations of another gene in the complex, CDC73, have previously been shown to cause cancer, particularly of the parathyroid gland, but also occasionally Wilms tumour.

Study leader Professor Nazneen Rahman, Head of Genetics and Epidemiology at The Institute of Cancer Research, London, and Head of Cancer Genetics at The Royal Marsden NHS Foundation Trust, said: "This research adds further evidence that malfunctioning of the PAF1 complex can lead to cancer. We hope our findings will stimulate research into why and how this occurs and will lead to improved treatments for cancer.

"Our findings are also of immediate value to affected families, who now have an explanation for why their children got cancer. Moreover, we can now do a simple blood test to see which children in the family are at risk of cancer and may benefit from cancer screening, and which have not inherited the mutation and so are not at increased risk of cancer."

Dr Michael Dunn, Head of Genetics and Molecular Science at the Wellcome Trust, said: "This is an excellent example of the power of genetics to discover new disease pathways. In the future similar research on these genes and others will open up important areas of research and ultimately lead to better screening and treatments for patients."


Story Source:

The above story is based on materials provided by Institute of Cancer Research. Note: Materials may be edited for content and length.


Journal Reference:

  1. Sandra Hanks, Elizabeth R. Perdeaux, Sheila Seal, Elise Ruark, Shazia S. Mahamdallie, Anne Murray, Emma Ramsay, Silvana Del Vecchio Duarte, Anna Zachariou, Bianca de Souza, Margaret Warren-Perry, Anna Elliott, Alan Davidson, Helen Price, Charles Stiller, Kathy Pritchard-Jones, Nazneen Rahman. Germline mutations in the PAF1 complex gene CTR9 predispose to Wilms tumour. Nature Communications, 2014; 5 DOI: 10.1038/ncomms5398

Cite This Page:

Institute of Cancer Research. "Mutations in gene essential for cell regulation cause kidney cancer in children." ScienceDaily. ScienceDaily, 7 August 2014. <www.sciencedaily.com/releases/2014/08/140807105217.htm>.
Institute of Cancer Research. (2014, August 7). Mutations in gene essential for cell regulation cause kidney cancer in children. ScienceDaily. Retrieved October 21, 2014 from www.sciencedaily.com/releases/2014/08/140807105217.htm
Institute of Cancer Research. "Mutations in gene essential for cell regulation cause kidney cancer in children." ScienceDaily. www.sciencedaily.com/releases/2014/08/140807105217.htm (accessed October 21, 2014).

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