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Test increases odds of correct surgery for thyroid cancer patients
Date:7/25/2014

to remove the rest of the thyroid.

Researchers have identified certain gene mutations that are indicative of an increased likelihood of thyroid cancer, and the molecular testing panel developed at UPMC can be run using the sample collected through the initial, minimally invasive biopsy, rather than a lobectomy. When the panel shows these mutations, a total thyroidectomy is advised.

Dr. Yip and her colleagues followed 671 UPMC patients with suspicious thyroid nodes who received biopsies. Approximately half the biopsy samples were run through the panel, and the other half were not. Patients whose tissue samples were not tested with the panel had a 2.5-fold higher statistically significant likelihood of having an initial lobectomy and then requiring a second operation.

"We're currently refining the panel by adding tests for more genetic mutations, thereby making it even more accurate," said co-author Yuri Nikiforov, M.D., Ph.D., professor in the Department of Pathology at Pitt and director of thyroid molecular diagnostics at the UPMC/UPCI Multidisciplinary Thyroid Center. "Thyroid cancer is usually very curable, and we are getting closer to quickly and efficiently identifying and treating all cases of thyroid cancer."

In 2009, the American Thyroid Association (ATA) revised its guidelines to add that doctors may consider the use of molecular markers when the initial biopsy is inconclusive.

"The ATA is currently revising those guidelines to take into account the latest research, including our findings," said senior author Sally Carty, M.D., Pitt professor of surgery, co-director of the UPMC/UPCI Multidisciplinary Thyroid Center and recent president of the American Association of Endocrine Surgeons. "The molecular testing panel holds promise for streamlining and eliminating unnecessary surgery not just here but nationwide."

A previous study led by Dr. Yip showed the panel to be cost-saving when used to help in the diagnosis of thyroid cancer.
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Contact: Allison Hydzik
hydzikam@upmc.edu
412-647-9975
University of Pittsburgh Schools of the Health Sciences
Source:Eurekalert

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