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now a new blood test is Raising hopes of detecting many types of cancer long before symptoms appear cancer kills around 10 million people worldwide each year sometimes are hard to detect until the advanced stages when treatment options are then limited now a trial of a new type of blood test has shown promise in identifying mutations much earlier being able to detect cancers sooner would make a major difference in our ability to stop them too often the disease is discovered far too late really we detect cancer then the more likely we are to cure it but simply if the tumor is smaller or hasn't had time to spread then we can cut it out or treat it with radiotherapy a trial in Britain called simplify looked at whether a blood test called Gallery made by us-based biotech firm Grail is able to detect a range of cancers a diagnosis that's often not simple or straightforward to make what simplifies doing is looking at whether we could use this blood test to decide who needs investigation for