A Pill On a Thread Can Monitor Esophageal Cancer Risk, Avoiding Unnecessary Endoscopies
Endoscopies are commonly used to determine the risk of esophagus cancer, but a test involving a “pill on the thread” has proven promising as an easier alternative for certain patients. Those who have the Barrett esophagus – a risk factor in esophagus cancer – often have to undergo several endoscopies, in which a long tube with a camera is transmitted in the stomach.
Although it is crucial to monitor the esophagus over time, endoscopies can end up being uncomfortable for patients, who can also undergo long waiting times for the procedure. A new study published in Lancet has shown that a less invasive capsule sponge test could replace endoscopies for half of all patients with the Barrett esophagus.
Monitor the risk of esophagus cancer
Esophagus cancer is a rare form of cancer, making 1% However, of all cancers diagnosed in the United States, this cancer is also difficult to treat and has high mortality rates, with less than one out of five survivors five years or more after the diagnosis.
Those with Barrett esophagus – which means that the fabric along the esophagus becomes more like the intestinal fabric – run a slight risk of developing dysplasia, a precancerous state.
Barrett esophagus is often associated with symptoms such as persistent estistent burns and regurgitation. Patients with the state undergo endoscopies to seek dysplasia, which can be low grade or high grade. The low -grade version is linked to one in 10 chance of developing esophagus cancer, while the high quality version goes to one in five chance.
Continuous monitoring of esophagus is vital, as taking early dysplasia can potentially avoid cancer development. Doctors mainly relied on endoscopies to follow any change.
“But Barrett’s chances of progression to cancer are low, and endoscopies are not very pleasant procedures,” said Rebecca Fitzgerald, Director of the start of cancer of the University of Cambridge, in a statement. “Added to this, endoscopies are not always a reliable way to identify early cancers and can depend on the skill of the person who endoscopy and the equipment used. What we need is a less invasive, easier to administer and more reliable alternative monitoring method.”
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How the pill works on a thread
The researchers worked on a Capsule sponge test To reduce endoscopy tension on patients and resources. For this test, a patient swallows a pill connected to a wire. The pill dissolves once in the stomach. When it is completely dissolved, it releases a sponge that scratches cells for tests because it returns to the esophagus.
The test samples are colored with a chemical product and examined under the microscope to search for two markers: anomalies in P53 – a protein that removes tumors – and cells that seem abnormal, called “atypia”.
The new study used the capsule sponge test to see how it could effectively classify the risk of esophagus cancer. Researchers recruited 910 patients from 13 hospitals across the United Kingdom, who have already been diagnosed with the Barrett esophagus.
Patients then received the test and allocated to one of the three categories according to the results: a high risk (with one or the two markers), a moderate risk (without markers but other risk factors linked to age and sex) and low risk (without markers or other risk factors). All patients also had endoscopies made to compare capsule sponge tests.
Advantages of the capsule sponge test
The tests classified 15% of high -risk patients, which means that they had a p53 and / or an abnormal atypia. In addition, 38% of these patients proved to be at a precancerous stage.
More than half of the patients (54%) have been classified as low risk. According to the results of the endoscopy, only two of the 495 patients in this category (0.4%) had high -grade dysplasia which required follow -up tests.
Although those at high risk should continue to monitor with endoscopies, it would probably be sure for people at low risk of continuing to monitor with the capsule sponge test. Researchers say that the sponge capsule test would not only release endoscopy resources but also make more comfortable monitoring for patients.
A 57 -year -old man, Duncan Cook, who participated in research and suffered endoscopies for almost 20 years to monitor the esophagus of his Barrett, shared his positive experience with the test.
“The first time I had in the towel, I was a little nervous,” Cook said in the statement. “It’s a big pill to swallow, but it is much better than opting for endoscopies. The sponge test is faster, you don’t need sedation for that, and you don’t need to find someone to come with you to bring you home afterwards. I was able to do the test and go to work after.”
This article does not offer medical advice and should be used for information purposes only.
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Jack Knudson is a deputy editor -in -chief to discover with a strong interest in environmental sciences and history. Before joining Discover in 2023, he studied journalism at the Ohio University Scripps College of Communication and previously interned at Recycling TODAY magazine.
