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 research is published today (Thursday) 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."
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