Health
FDA approves new blood test for colon cancer screening: ‘Early detection is critical’
Screening for the second leading cause of cancer deaths just got a bit easier.
The U.S. Food and Drug Administration (FDA) announced the approval of a new blood test for colorectal cancer (CRC).
Shield, made by Guardant Health in California, is the first approved blood test that is considered a primary screening option for the disease and meets Medicare coverage requirements, the company stated.
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The FDA’s approval, announced Tuesday, follows a large clinical trial that included 20,000 average-risk adults, which found that Shield had an 83% sensitivity for the detection of CRC.
Those findings were published in The New England Journal of Medicine in March.
There is another approved blood test, Epigenomics’ Epi proColon, but it is a second-line screening option, which means it can only be given to patients who have been offered first-line options and have a history of not completing CRC screening, according to Michael Weist, a spokesperson from Guardant Health.
Robert Smith, PhD, senior vice president of Early Cancer Detection Science for the American Cancer Society in Atlanta, confirmed that Shield is the only blood test currently available for colorectal cancer screening.
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“It compares favorably with other colorectal cancer screening tests,” such as colonoscopy, CT colonography and stool tests, Smith, who is not affiliated with Guardant, told Fox News Digital.
“The test … likely will be more appealing to people who have never been screened, or not recently screened,” he added.
The key advantage of the blood test is that it can be done during a routine doctor’s appointment without the need for prepping or taking an entire day off from work.
“It offers the potential to detect colorectal cancer in a person who is non-adherent with screening recommendations, asymptomatic and willing to get this test based on preference, convenience or both,” Smith said.
“Compared to colonoscopy, it is simpler and less time-consuming.”
Shield has shown “reasonable sensitivity and specificity compared to other blood/stool tests,” according to Dr. Shuji Ogino, chief of the Molecular Pathological Epidemiology program at Brigham and Women’s Hospital, which is a member of Mass General Brigham in Boston.
“Compared to colonoscopy, it is simpler and less time-consuming,” Ogino, who is not associated with Guardant, told Fox News Digital.
Risks and limitations
While the risks of the Shield test have not been studied in a population of regular users, they are likely to be minimal, according to ACS’ Smith.
“However, the Shield test does not offer the same level of benefit to prevent colorectal cancer by detecting and removing precursor lesions (polyps), which is a significant benefit from regular screening with the currently recommended tests,” Smith cautioned.
That downside would be offset by more unscreened people choosing to get screenings, he noted.
“The Shield blood test does have a lower degree of sensitivity than the Cologard stool test for detecting colon cancer,” Stephen Grabelsky, M.D., a hematologist and medical oncologist at the Eugene M. & Christine E. Lynn Cancer Institute at Boca Raton Regional Hospital, told Fox News Digital.
The test is only intended for people with a standard risk for colon cancer, which excludes patients with a family history of colon cancer or a personal history of inflammatory bowel disease, Grabelsy added. (He also was not involved in the test’s development.)
Early detection is key
The compliance rate for colorectal cancer screenings is only about 59% — well below the National Colorectal Cancer Roundtable’s goal of 80% for eligible individuals, according to Weist.
The test is expected to be commercially available by this fall.
“More than one out of three eligible Americans – over 50 million people – do not complete CRC screenings, often due to the perception that other available options, such as colonoscopies or stool-based tests, are invasive, unpleasant or inconvenient,” he said.
When detected early, colon cancer has a relative survival rate of 91% — compared to just 14% if the cancer has spread to distant parts of the body.
“Early detection is critical,” Weist said. “The most effective screening test is the test that gets done.”
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The Shield test is indicated for colorectal cancer screening in individuals age 45 and older who have an average risk for the disease, he told Fox News Digital.
The test is expected to be commercially available by this fall.
Patients interested in the Shield test should discuss the benefits and limitations with a health care provider before making a choice, Smith recommended, and should also determine whether their insurance will cover it.
“It is important to appreciate that a colorectal cancer screening test that is positive is not complete until the patient has had a colonoscopy,” Smith noted.
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“Any non-colonoscopy screening test for colorectal cancer that is positive must be followed up with a colonoscopy.”
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Health
OneBlood issues urgent call to blood donors after cyber attack
A blood donation service that partners with more than 300 hospitals in the southeast has suffered a ransomware attack that significantly reduced its capacity, according to a news release.
OneBlood, a nonprofit blood center, said it is working with cybersecurity specialists, along with federal, state and local law enforcement, to respond to a “ransomware event” impacting its software system.
“OneBlood takes the security of our network extremely seriously. Our team reacted quickly to assess our systems and began an investigation to confirm the full nature and scope of the event,” said Susan Forbes, OneBlood senior vice president of corporate communications and public relations.
“Our comprehensive response efforts are ongoing and we are working diligently to restore full functionality to our systems as expeditiously as possible.”
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The nonprofit said its centers remain operational and continue to collect, test and distribute blood to hospitals, but at a significantly reduced capacity.
“We have implemented manual processes and procedures to remain operational. Manual processes take significantly longer to perform and impacts inventory availability,” said Forbes.
“In an effort to further manage the blood supply, we have asked the more than 250 hospitals we serve to activate their critical blood shortage protocols and to remain in that status for the time being.”
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The ransomware attack has created an urgent need for blood donations at OneBlood’s operational centers, the nonprofit shared in a call to action. The group said all blood types are needed, but specifically requested O positive, O negative and platelet donations.
Blood centers across the country are also donating blood and platelets to OneBlood, and the AABB Disaster Task Force is coordinating national resources to assist with additional blood products being sent to OneBlood, according to the news release.
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“The blood supply cannot be taken for granted. The situation we are dealing with is ongoing. If you are eligible to donate, we urge you to please make an appointment to donate as soon as possible,” said Forbes.
OneBlood provides safe, available and affordable blood to 355 hospitals in Alabama, Florida, Georgia, North Carolina, South Carolina and Virginia, according to its website.
The nonprofit operates more than 90 donor centers and its fleet of 250 Big Red Bus bloodmobiles are a familiar sight at blood drives throughout the southeastern United States.
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Founded in 2012 when three independent Florida blood centers merged, OneBlood has grown to become the second-largest blood center in the United States. The nonprofit distributes more than 1 million blood products to hospitals annually.
For more Health articles, visit www.foxnews.com/health.
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