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Novel mutations define 2 types of bone tumor
Date:10/27/2013

defined by specific histone 3.3 mutations.

The team pinpointed the specificity of these mutations to affecting a single amino acid residue on the histone 3.3 protein; G34W amino acid residue underlies giant cell tumour of the bone and K36M amino acid residue underlies chondroblastoma.

"The high prevalence of these mutations in each tumour type is striking, but what's most remarkable is the unprecedented specificity of these mutations," says Dr Sam Behjati, first author from the Wellcome trust Sanger Institute. "The specificity of the mutations not only informs us about how these tumours develop, but also points to some fundamental function of these genes in normal bone development."

"Our findings will be highly beneficial to clinicians as we now have a diagnostic marker to differentiate chondroblastoma and giant cell tumour of bones from other bone tumours," says Professor Adrienne Flanagan, co-lead author from the Royal National Orthopaedic Hospital, and UCL Cancer Institute. "This study highlights the importance of continuing to sequence all types of human cancer."

"We are also extremely grateful to our patients and collaborators, without their help we would not have been able to study these extremely rare diseases," adds Professor Flanagan.


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Contact: Aileen Sheehy
press.office@sanger.ac.uk
0044-012-234-92368
Wellcome Trust Sanger Institute
Source:Eurekalert

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