John Sammut graduated with honours from medicine at the University of Liverpool in 2005. He completed his Master’s degree in Physiology and received a scholarship from the Wolfson Foundation. He is now training within the prestigious WCAT scheme in Wales, and takes an active role in research alongside his clinical work. He currently has eight publications in peer-reviewed journals.


Introduction: As is the case for many other malignancies, colorectal and ovarian cancer oft en present at an advanced stage, making their treatment more challenging. As well as fi nding new biomarkers to help diagnose the disease earlier, there is also a drive to develop new treatment strategies to combat cancer. Immunotherapeutics represents increasing promise as an important choice in treating many cancer types. Cancer-testis antigens (CTAs) have the potential to act as a basis for developing powerful immune-based treatments to fi ght cancer and dramatic results have been seen for select patients with advanced cancer. Methods and Results: We have performed a bioinformatics screen using microarray and expressed-sequence tag databases to identify potential new CTAs. Using specifi c intron-spanning primer sets, polymerase chain reaction experiments were conducted to detect gene expression initially in a range of normal tissues. Genes that showed very low expression patterns in normal tissues were then tested against a range of cancer types. From an initial list of over 300 genes, 15-20% has been ‘validated’ by our group as potential new CTAs. Tissue and serum from over 80 patients with colorectal and ovarian cancer have been obtained. Discussion: We have identifi ed several potential targets for the development of novel anti-cancer immunotherapies. We will now focus on establishing an immune (i.e. serological) response within cancer patients and attempt to characterise the functional signifi cance of the proteins within individual tumours.

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