{"id":2569,"date":"2018-09-18T14:46:33","date_gmt":"2018-09-18T21:46:33","guid":{"rendered":"https:\/\/keck.usc.edu\/news\/scientists-develop-new-way-to-identify-breast-cancer-tumors\/"},"modified":"2023-11-26T08:26:12","modified_gmt":"2023-11-26T16:26:12","slug":"scientists-develop-new-way-to-identify-breast-cancer-tumors","status":"publish","type":"post","link":"https:\/\/keck.usc.edu\/news\/scientists-develop-new-way-to-identify-breast-cancer-tumors\/","title":{"rendered":"Scientists develop new way to identify breast cancer tumors"},"content":{"rendered":"\n \n \n\n\n\n\n\n\n\n
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Scientists develop new way to identify breast cancer tumors<\/h1>\n\n\n<\/div>\n \n \n
\n \n September 18, 2018<\/span>\n <\/div>\n \n \n
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A research team led by USC scientists has developed a new way to identify molecular markers of breast cancer tumors, a potentially life-saving breakthrough that could lead to better treatment for millions of women.<\/p>\n

Aided by machine learning, the researchers taught a computer to rapidly sort images of breast tumors to identify which ones had estrogen receptors, a key to determining prognosis and treatment options. That\u2019s a big step forward from microscopes and cell biopsies in use for more than a century, according to the scientists.<\/p>\n

The work opens a new pathway for breast cancer treatment that promises faster results for less cost for more people worldwide, said\u00a0David B. Agus<\/a>, MD, professor of medicine and biomedical engineering at the Keck School of Medicine of USC and the USC Viterbi School of Engineering. He is also CEO of the\u00a0Ellison Institute for Transformative Medicine of USC<\/a>.<\/p>\n

The findings appear this week in\u00a0Nature Partner Journals Breast Cancer<\/a>.<\/p>\n

\u201cIt\u2019s the beginning of a revolution to use machine learning to get new information about breast cancer to the physician,\u201d Agus said. \u201cWe can use it to detect better treatments, get information to patients faster and help more people. We\u2019re unleashing this power to give new information to physicians and help treat cancer.\u201d<\/p>\n

How to identify breast cancer tumors<\/strong><\/p>\n

Except for skin cancer, breast cancer is the most common cancer in women in the United States. While deaths have declined, it remains the second-leading cause of cancer death among women and the leading cause of cancer death among Hispanic women.<\/p>\n

About 237,000 cases of breast cancer are diagnosed in U.S. women and about 41,000 die from the disease each year, according to the\u00a0Centers for Disease Control and Prevention<\/a>.<\/p>\n

The key to identifying and treating cancer is knowing the nature of the tumor. Cancer cells that contain receptors for estrogen and other hormones respond differently to cancer drugs that target these mechanisms. While doctors use these characteristics to classify tumors and select treatments, testing for markers is a slow and inefficient process.<\/p>\n

For example, assays can be inconsistent depending on the laboratory doing the testing. They\u2019re also expensive, take weeks to do and are unavailable in many developing countries.<\/p>\n

\u201cIf you\u2019re diagnosed with cancer, it\u2019ll be a few weeks before you get a call from the doctor saying they\u2019ve identified a marker,\u201d said\u00a0Dan Ruderman<\/a>, PhD, one of the study authors and assistant professor of research medicine at the Keck School of Medicine. \u201cWith machine learning technology, we can tell you the same day, so there\u2019s less delay, less stress and potentially better outcomes. It\u2019s going to enable us to identify the right drug and dose more quickly. It\u2019s a big step toward personalized medicine.\u201d<\/p>\n

Molecular markers identify breast cancer tumors<\/strong><\/p>\n

While machine learning has been used before for cancer detection, the USC study adapted the technology to more clearly focus on telltale markers of a cell\u2019s nucleus. The key was to extract parameters describing the shape of nuclei, and feeding these into a large neural network that could learn relationships between nucleus shape and molecular markers.<\/p>\n

The scientists used publicly available hematoxylin-eosin stained histopathology images \u2014 the cell-stained slides doctors have used for more than a century. Next, they ascertained clinical status for 113 cancer patients, then split the patients into two groups, using one group to train a convolutional neural network algorithm, which is used to enhance visual imagery, and another to test the machine. When they compared the two sets, they found a strong correlation, providing high confidence that an algorithm can predict the estrogen receptor status of the tumor.<\/p>\n

\u201cWe can use this technology to identify the molecular markers of the tumor and in the future will identify which therapeutics the tumor will respond to. Machine learning helps us get this information to patients sooner and may transform cancer care in the developing world where precise breast cancer marker assessment is in short supply,\u201d said Rishi Rawat, a graduate student in the Keck School of Medicine and first author of the study.<\/p>\n

So far, the research findings demonstrate that the new technology has the potential to improve clinical care. Validation studies are under way \u2014 an important step before it\u2019s ready for use in the doctor\u2019s office.<\/p>\n

The study authors are Agus, Rawat and Ruderman of the Ellison Institute; Paul Macklin of Intelligent Systems Engineering at Indiana University; and David L. Rimm of the Department of Pathology at the Yale University School of Medicine.<\/p>\n

The research was supported by a grant from the Breast Cancer Research Foundation (BCRF-16-103).<\/p>\n

\u2014 Gary Polakovic<\/p>\n\n\n\n<\/div>\n <\/div>\n\n\n <\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":168,"featured_media":2570,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"advgb_blocks_editor_width":"","advgb_blocks_columns_visual_guide":"","footnotes":"","_links_to":"","_links_to_target":""},"categories":[6],"tags":[38,116,10,89,139,135,20],"class_list":["post-2569","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-press-release","tag-administrative","tag-announcements","tag-cancer","tag-medicine","tag-medicine-engineering-science-and-humanities-program","tag-mesh","tag-research"],"acf":[],"yoast_head":"\nScientists develop new way to identify breast cancer tumors<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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