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New Blood Test Developed To Treat Ovarian Cancer Patients

by Hannah Joy on December 22, 2016 at 11:44 AM
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New Blood Test Developed To Treat Ovarian Cancer Patients

A simple blood test to check the effectiveness of chemotherapy treatment in ovarian cancer patients was developed. The tumor DNA detected in a blood sample of the patients, was closely monitored by the researchers before every chemotherapy.

About 40 patients, who are at high grade risk for serous ovarian cancer were included in the study, as reported by the researchers from University of Cambridge.

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By measuring the levels of the mutated cancer gene TP53, researchers found those who responded well to treatments had a rapid fall in the levels of this circulating DNA.

The researchers tested levels of this circulating tumor DNA in patients before and after treatment.

The results showed that it took longer for the disease to progress in patients whose tumor DNA count in the blood fell by more than a half after one cycle of chemotherapy, compared with patients whose DNA count did not drop.
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"There's a need for a test to find out quickly whether ovarian cancer patients are benefiting from chemotherapy. These are early results, but if bigger trials are successful, this test looking at the tumor DNA circulating in the blood could be a cheap, quick and easy way to get this information," said James Brenton.

Further, the level of tumor DNA in the blood was found to reflect the amount of cancer seen on scans carried out before chemotherapy.

This test may be particularly useful for patients with high grade serous ovarian cancer because the mutated cancer gene TP53 is found in more than 99 per cent of patients with this form of the disease, the researchers said.

"This could be a good way to test new types of drugs that target cancer cells specifically and spare patients the side effects from treatments if they are not working," noted Brenton, the study published in the Journal PLOS Medicine.



Source: IANS
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