For decades scientists have been working on ways to screen for cancers using a simple blood draw rather than a painful biopsy. These so-called 'blood biopsy' tests are closer than ever to dramatically improving the way doctors screen for cancer.
Cancer refers to a collection of related diseases in which the body's cells divide uncontrollably and spread to surrounding tissues.Every year, thousands of Americans undergo routine screening to catch cancer in its early stages, while it’s still treatable. But these routine tests can be painful and invasive, and doctors only regularly screen for five of some of the most common types of cancer.
According to Dr. Pashtoon Kasi, director of colon cancer research and precision medicine at Weill Cornell Medicine, the underlying technology was actually first used to serve a different purpose. Precision medicine tries"to learn as much [as possible] about a person’s health through sort of sophisticated diagnostic tests," Seiden said.
The Galleri test, though promising, is not yet FDA approved. It still needs to undergo more testing to show it can produce reliable results every time. A common refrain in cancer treatment is"earlier is better": that the earlier a cancer can be found, the treatment is often more successful. However, sometimes it can be difficult to tell the difference between an early cancer and a non-cancerous growth.
But at the very least, Galleri could provide an early warning system, so doctors could monitor patients and treat them if it becomes necessary.
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