Blood test detects multiple cancers
Researchers have developed a new blood test for the early detection of eight common cancers, diagnosing tumours before they have spread, when the chance of cure is high.
Called CancerSEEK, developed by researchers at Johns Hopkins University School of Medicine, US, the blood test screens for key proteins and gene mutations that indicate the presence of one of eight types of cancer: ovary, liver, stomach, pancreas, oesophagus, bowel, lung and breast.
The research was published today in the international journal Science and included collaborating organisations from the US, Australia and Italy.
Walter and Eliza Hall Institute scientists Associate Professor Jeanne Tie and Professor Peter Gibbs, who also have joint appointments at the Western Hospital, were the only Australians who contributed to the project.
Earlier diagnosis for better outcomes
Professor Gibbs said blood tests that could accurately detect the early stages of cancer, well before symptoms are present, were urgently needed as cancer mortality rates are directly related to how advanced a cancer is at diagnosis.
"While screening tests for some cancers have already been developed, and are associated with earlier diagnosis and better outcomes, for many major tumour types there are no effective screening tests. The currently available screening tests can also be unpleasant, have associated risks and uptake can be low. Significantly each test can only screen for one cancer at a time," Professor Gibbs said.
The test was able to positively detect between 69 and 98 per cent of people who had one of five cancer types (ovary, liver, stomach, pancreas, and oesophagus) for which there are no screening tests currently available (for average-risk individuals).
The specificity of CancerSEEK was greater than 99 per cent, meaning that fewer than one per cent of people had a false positive result from the test.
Associate Professor Tie said CancerSEEK had the potential to be a one-stop, safe screening test for multiple tumour types that should have high community acceptance.
"For the first time we have the promise of a screening test that will lead to earlier diagnosis and improved survival outcomes for many tumour types that are major contributors to cancer deaths in our community," Associate Professor Tie said.
19 January 2018.