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Mutations in a gene essential for cell regulation cause kidney cancer in children
Date:8/7/2014

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 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 R
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Contact: Henry French
henry.french@icr.ac.uk
020-715-35380
Institute of Cancer Research
Source:Eurekalert

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