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Health

Blood test offers hope of finding cancers before symptoms develop

Saturday 02/June/2018 - 06:33 PM
Sada El Balad
Edited by Ahmed Moamar
Promising new research enables scientists to use a blood test to screen for different types of cancers at early stages، as CNN said.
The test، known as a liquid biopsy، is used to screen for DNA from cancer cells and was able to detect 10 different cancers with good accuracy.
Dr. Eric Klein from the Taussig Cancer Institute at Cleveland Clinic in the United States led the research، which is to be presented at the annual conference of the American Society of Clinical Oncology in Chicago، the largest gathering of oncologists worldwide.
Most cancers are detected at advanced stages when treatment is more complicated and cure rates are low، the conference abstract states.
The non-invasive DNA blood test isn't yet ready to use in practice، but the test would enable cancers to be detected in the early stages، before symptoms begin، when treatment is more likely to succeed. These types of tests could become part of a universal screening process for cancer.
"Detecting cancer early، before it has spread is one of the most powerful ways to ensure more people are offered treatments which give them a better chance of beating the disease،" said Fiona Osgun of Cancer Research UK، who was not part of the study.
This blood test may be able to detect 8 types of cancer، study says
This blood test may be able to detect 8 types of cancer، study says
The research sampled 1،627 participants، of which 749 were cancer-free and 878 had various types of newly detected، untreated cancer
The blood test involved three tests on the participants' blood samples and showed sensitivity in detecting 10 different types of cancer، including pancreatic، ovarian، lung and esophageal cancer، among others.
The results showed that the test most accurately diagnosed ovarian cancer، with 90% accuracy، followed by hepatobiliary -- a highly lethal cancer that attacks the liver and gallbladder -- and pancreatic cancer، with 80% accuracy.
The test's high sensitivity to pancreatic cancer is especially promising. Pancreatic cancer is usually diagnosed when the cancer is too advanced to be operated on، said Dr. Chris Abbosh، a clinical research associate at University College London's Cancer Institute.
However، it's important to note that the number of people in which these cancers were detected was small. For both ovarian and pancreatic cancer، only 10 cases were detected، while only five people with hepatobiliary cancer were identified.
Head and neck cancer as well as lung cancer were detected with the least accuracy، at 56% and 59%، respectively.

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