<?xml version="1.0" encoding="UTF-8"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2026-10-18T23:16:40Z</responseDate><request verb="GetRecord" identifier="oai:ebyu-rdlopen.rawdatalibrary.net:ebyu/14522" metadataPrefix="oai_dc">https://ebyu-rdlopen.rawdatalibrary.net/oai/request</request><GetRecord><record><header><identifier>oai:ebyu-rdlopen.rawdatalibrary.net:ebyu/14522</identifier><datestamp>2026-10-18T20:36:54Z</datestamp><setSpec>openaire</setSpec><setSpec>driver</setSpec><setSpec>com_ebyu_10000</setSpec><setSpec>col_ebyu_10001</setSpec></header><metadata><oai_dc:dc xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd"><dc:title>Role of circulating tumor cells and cell-free tumor deoxyribonucleic acid fragments as liquid biopsy materials in breast oncology</dc:title><dc:creator>Telkoparan Akillilar, Pelin</dc:creator><dc:creator>Yildiz, Gökhan</dc:creator><dc:subject>Biomarker</dc:subject><dc:subject>Breast cancer</dc:subject><dc:subject>Cell-free tumor DNA fragments</dc:subject><dc:subject>Circulating tumor cells</dc:subject><dc:subject>Liquid biopsy</dc:subject><dc:subject>4',6 diamidino 2 phenylindole</dc:subject><dc:subject>DNA fragment</dc:subject><dc:subject>messenger RNA</dc:subject><dc:subject>Article</dc:subject><dc:subject>cancer staging</dc:subject><dc:subject>circulating tumor cell</dc:subject><dc:subject>disease course</dc:subject><dc:subject>female</dc:subject><dc:subject>flow cytometry</dc:subject><dc:subject>fluorescence microscopy</dc:subject><dc:subject>gene expression</dc:subject><dc:subject>human</dc:subject><dc:subject>human tissue</dc:subject><dc:subject>reverse transcription polymerase chain reaction</dc:subject><dc:subject>sensitivity and specificity</dc:subject><dc:subject>treatment response</dc:subject><dc:description>Breast cancer is the most commonly diagnosed type of cancer among females worldwide. It is also the leading cause of female cancer-related death in developing countries. Though novel biomarkers and new strategies for diagnosis, monitoring course of disease, and treatment of breast cancer have been found, these methods are invasive, costly, labor-intensive, and inadequate to fully gauge treatment response and disease recurrence. Therefore, novel biomarkers with greater sensitivity and specificity, and which are easy to perform are needed in breast cancer oncology. There is growing interest in the potential use of circulating tumor cells and circulating tumor deoxyribonucleic acid fragments in liquid biopsy as non-invasive biopsy materials for early detection of breast cancer, monitoring disease progression, and understanding reasons for treatment resistance. This review is a discussion of current status of utilization of these liquid biopsy materials in breast oncology. © 2017, Turkish Society for Radiation Oncology.</dc:description><dc:publisher>Istanbul Tip Fakultesi</dc:publisher><dc:date>2017</dc:date><dc:type>Article</dc:type><dc:identifier>https://rdlopen.rawdatalibrary.net/r/ebyu/14522</dc:identifier><dc:identifier>https://doi.org/10.5505/tjo.2017.1528</dc:identifier><dc:identifier>1300-7467</dc:identifier><dc:language>en</dc:language><dc:relation>Turk Onkoloji Dergisi</dc:relation><dc:rights>info:eu-repo/semantics/openAccess</dc:rights><dc:type>info:eu-repo/semantics/article</dc:type><dc:identifier>https://ebyu-rdlopen.rawdatalibrary.net/tr/items/ebyu/14522</dc:identifier></oai_dc:dc></metadata></record></GetRecord></OAI-PMH>