Breakthrough Blood Test Detects Dozens of Cancers Early
A revolutionary blood test capable of detecting more than 50 types of cancer has shown highly promising results in a landmark study, offering new hope for early detection and treatment. The PATHFINDER 2 trial of the Galleri multi-cancer early detection (MCED) test demonstrated a significant increase in cancer detection rates when added to standard recommended screenings.
According to results presented at the European Society for Medical Oncology Congress 2025 in Berlin, more than half of the cancers detected were at an early stage (stage I or II), making them highly treatable. Approximately three-quarters of the cancers detected had no existing standard screening programs, such as pancreatic, liver, ovarian, and stomach cancers.
"This is a major breakthrough in cancer screening," said Dr. Josh Ofman, President of GRAIL, Inc., the company behind the Galleri test. "Cancer is the second leading cause of death worldwide, and most deadly cancers are found too late. This technology has the potential to change that."
The PATHFINDER 2 study involved over 6,000 participants and was designed to evaluate the effectiveness of the Galleri test in detecting various types of cancer. The results showed a more than seven-fold increase in cancer detection rates when added to standard recommended screenings.
While the study's findings are promising, experts caution that the Galleri test is not yet widely available and should only be used under the guidance of a healthcare professional. "This technology has the potential to revolutionize cancer screening, but it's essential to remember that it's just one tool in the fight against cancer," said Dr. Ofman.
Cancer is often diagnosed at an advanced stage, making treatment more challenging and reducing survival rates. Early detection is critical for effective treatment and improved outcomes. The Galleri test uses a unique approach to detect genetic material from cancer cells in the blood, providing a non-invasive alternative to traditional screening methods.
The PATHFINDER 2 study's findings have significant implications for cancer prevention and treatment. As researchers continue to refine the technology, it's likely that more widespread adoption of the Galleri test will become a reality.
For now, patients can take steps to reduce their risk of developing certain types of cancer by maintaining a healthy lifestyle, including regular exercise, a balanced diet, and avoiding tobacco use. Regular screening tests, such as mammograms and colonoscopies, are also essential for early detection.
As the medical community continues to explore the potential of the Galleri test, one thing is clear: this breakthrough has the potential to save countless lives by detecting cancer at an early stage.
*Reporting by Forbes.*