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Pancreatic cancer survival linked to four genes: Study
Researchers have found that alterations in four main genes are responsible for how long patients survive with pancreatic cancer
New York : Researchers have found that alterations in four main genes are responsible for how long patients survive with pancreatic cancer.
"The research helps us to understand how the molecular features of pancreatic cancer impact prognosis on an individual level and gives us more facts to guide patients, and importantly, to design future research studies," said study co-author Aram Hezel, Medical Oncology at University of Rochester.
For the study involved 356 patients who all had pancreatic adenocarcinoma that could be surgically removed.
Adenocarcinoma is by far the most common type of pancreas tumour. Ninety of the patients were treated at the University of Rochester Medical Centre's Wilmot Cancer Institute; the others at Dana Farber/Brigham and Women's Cancer Centre in Boston and Stanford Cancer Institute. In all cases after the tumours were removed, scientists extracted DNA from the cancerous tissue and nearby normal tissue and conducted next-generation DNA sequencing on the specimens.
The analysis centred on the activity of the KRAS, CDKN2A, SMAD4, and TP53 genes.
Results showed that patients who had three or four of the altered genes had worse disease-free survival (the time between surgery and when the cancer returns), and overall survival (from surgery to death), compared to patients with a single or two altered genes.
