By ATISH | America News World | October 19, 2025
A revolutionary blood test could transform cancer detection. The Galleri test, developed by Grail, identifies over 50 types of cancer. This cutting-edge technology detects cancerous DNA fragments in the blood. A recent North American trial shows promising results. It could speed up diagnosis and save lives.
What Is the Galleri Test?
The Galleri test is a simple blood test. It detects tiny pieces of tumor DNA circulating in the bloodstream. This allows it to identify cancers early. Early detection is critical for successful treatment. The test targets cancers with no current screening programs, like ovarian, liver, and pancreatic cancer.
Key Findings from the Trial
A trial involving 25,000 adults in the US and Canada revealed exciting results. Nearly 1% of participants tested positive. Of those, 62% were later confirmed to have cancer. Over 50% of detected cancers were in early stages. Early-stage cancers are easier to treat and often curable. The test accurately ruled out cancer in 99% of negative cases.
Why This Matters for Cancer Screening
The Galleri test could revolutionize cancer screening. It detected cancers not covered by standard screenings. For example, it identified ovarian, stomach, bladder, and pancreatic cancers. These cancers often go unnoticed until advanced stages. The test also pinpointed the cancer’s origin in 90% of cases. This precision aids doctors in planning effective treatments.
Boosting Early Detection
Combining the Galleri test with existing screenings for breast, bowel, lung, and cervical cancer increased detection rates seven-fold. Early detection is key to improving survival rates. Dr. Nima Nabavizadeh, lead researcher at Oregon Health & Science University, called the results a “game-changer.” He believes the test could shift cancer diagnosis to earlier, more treatable stages.
What Experts Are Saying
Sir Harpal Kumar, president of biopharma at Grail, praised the test’s potential. “Most cancer deaths happen because diagnosis comes too late,” he told AMERICA NEWS WORLD . The Galleri test aims to change that. It offers hope for curative treatments by catching cancers early. However, experts like Clare Turnbull from The Institute of Cancer Research urge caution. She emphasized the need for more data. Randomized studies must confirm if early detection reduces cancer deaths.
The NHS Trial and Future Prospects
The UK’s National Health Service (NHS) is testing the Galleri test. A three-year trial with 140,000 participants is underway in England. Results, expected next year, could shape the future of cancer screening. If successful, the NHS plans to roll out the test to one million people. This could make the Galleri test a cornerstone of cancer care.
Challenges and Cautions
While the results are promising, challenges remain. Naser Turabi from Cancer Research UK warned about overdiagnosis. Some detected cancers may not cause harm if left untreated. More research is needed to ensure the test’s benefits outweigh risks. The UK National Screening Committee will review the evidence. Their decision will determine if the NHS adopts the test widely.
Why This Test Is a Big Deal
Cancer remains a leading cause of death worldwide. Early detection can save countless lives. The Galleri test’s ability to detect 50+ cancers, especially those without screening programs, is groundbreaking. Its high accuracy in identifying cancer origins makes it a powerful tool. For patients, this could mean faster diagnoses and better outcomes.
What’s Next?
The full trial results will be presented at the European Society for Medical Oncology congress in Berlin. However, they await peer-reviewed publication. The NHS trial’s outcome will be crucial. If successful, the Galleri test could become a standard part of cancer screening globally.
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