UVA Finds Way To Improve Cancer Outcomes
University of Virginia Finds Way To Improve Cancer Outcomes Based Upon An Individual Patient’s Genes
Article Based Upon Press Release
University of Virginia
March 30, 2020
Content May Be Edited For Style and Length
By mining a vast trove of genetic data, researchers at the UVA School of Medicine are enhancing doctors’ ability to treat cancer, predict patient outcomes and determine which treatments will work best for individual patients.
The researchers have identified inherited variations in our genes that affect how well a patient will do after diagnosis and during treatment. With that information in hand, doctors will be able to examine a patient’s genetic makeup to provide truly personalized medicine.
“Oncologists can estimate how a patient will do based on the grade of the tumor, the stage, the age of the patient, the type of tumor, etc. We found [adding a single genetic predictor] can improve our predictive ability by 5% to 10%,” said UVA’s Anindya Dutta, MBBS, PhD. “Many of the cancers had multiple inherited genetic change that were predictive of outcome. so if we add those in, instead of a 10% increase we might get a 30% increase in our ability to predict accurately how patients will do with our current therapy. That’s amazing.”
Why Some Patients Fare Better Than Others
The research offers answers to questions that have long perplexed doctors. “Every clinician has this experience: Two patients come in with exactly the same cancer – same grade, same stage, received the same treatment. One of them does very well, and the other one doesn’t,” Dutta said. “The assumption has always been that there is something about the two that we didn’t understand, like maybe there are some tumor-specific mutations that one patient had but the other did not. But it occurred to us that with all this genomic data, there is another hypothesis that we could test.”
To determine if genetic differences in the patients could be the answer, Dutta and his colleagues did a deep dive into the Cancer Genome Atlas, an enormous repository of genetic information assembled by the National Institutes of Health’s National Cancer Institute. The researchers sought to correlate inherited genetic variations with patient outcomes.
“This incredibly smart MD, PhD student in the lab. Mr. Ajay Chatrath, decided that this was a perfect time to explore this,” Dutta recalled. “With the help of cloud computing services at UVA, we managed to download all this genomic sequencing data and identify what are known as germline variants — not just tumor-specific mutations but the mutations that were inherited from the parents and are present in all cells of the patient.”
Dutta is eager to share his findings in hopes of finding collaborators and inspiring researchers and private industry to begin mining the data for other conditions. “This is very low-hanging fruit,” he said. “Germline variants predicting outcome can be applicable to all types of diseases and not just cancer, and [they can predict] responsiveness to all types of therapy, and that’s why I’m particularly excited.”
Cancer Findings Published
The researchers have published their findings in the scientific journal Genome Medicine. The study’s authors were Chatrath, Roza Przanowska, Shashi Kiran, Zhangli Su, Shekhar Saha, Briana Wilson, Takaaki Tsunematsu, Ji-Hye Ahn, Kyung Yong Lee, Teressa Paulsen, Ewelina Sobierajska, Manjari Kiran, Xiwei Tang, Tianxi Li, Pankaj Kumar, Aakrosh Ratan and Dutta.
The research was supported by the National Institutes of Health, grants R01 CA166054, R01 1094 CA60499, T32 GM007267, AHA 18PRE33990261; and a Cancer 1095 Genomics Cloud Collaborative Support grant. The Seven Bridges Cancer 1096 Genomics Cloud has been funded by the National Cancer Institute, National Institutes of Health.