Experts say that a simple test that can identify 18 early-stage cancers could represent a medical "gamechanger". Writing in the journal BMJ Oncology, the team from US biotech firm Novelna, said: "This finding is the foundation for a multi-cancer screening test for the early detection of 18 solid tumors that cover all major human organs of origin for such cancers at the earliest stage of their development with high accuracy." They added: "These findings pave the way for a cost-effective, highly accurate, multi-cancer screening test that can be implemented on a population-wide scale." However, the team said their relatively small sample size meant further studies were needed in bigger groups of people. Blood plasma samples were collected from 440 people diagnosed with 18 different types of cancer, and from 44 healthy blood donors.

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