Study: AHN blood test detects colon cancer
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Allegheny Health Network (AHN) says it developed a new test that can detect colon cancer while avoiding an invasive colonoscopy.
Why it matters: Colorectal cancer — which originates in the colon or rectum — is one of the deadliest cancers in the U.S., with over 55,000 deaths expected this year, per the National Cancer Institute.
The latest: A blood-based test from researchers at AHN detected about 90% of colorectal cancers, according to a recent study published in the peer-reviewed medical journal The Lancet Gastroenterology & Hepatology.
Zoom in: The blood tests also detected about 81% of advanced adenomas, or high-risk polyps, that can lead to colorectal cancer.
Zoom out: Colonoscopy remains the most effective screening tool, but some patients avoid it due to preparation or discomfort, per AHN.
The big picture: AHN officials believe this new blood test could improve screening rates among those wary patients.
- About two-thirds of adults ages 45 or older stay up to date on screenings, below the target rate of 80%, according to the American Cancer Society.
Between the lines: Many colorectal cancer patients only find the disease after it has progressed, and earlier screenings could help treat and prevent it, said Ali H. Zaidi, medical director of aerodigestive research at the AHN Cancer Center.
The bottom line: The new blood test is still being studied and shouldn’t be used as a replacement for colonoscopies, and patients should continue to follow recommended screening guidelines from their physicians, per AHN.