keyword
MENU ▼
Read by QxMD icon Read
search

circulating DNA

keyword
https://www.readbyqxmd.com/read/28431643/advances-in-circulating-tumor-dna-analysis
#1
Samantha Perakis, Martina Auer, Jelena Belic, Ellen Heitzer
The analysis of cell-free circulating tumor DNA (ctDNA) is a very promising tool and might revolutionize cancer care with respect to early detection, identification of minimal residual disease, assessment of treatment response, and monitoring tumor evolution. ctDNA analysis, often referred to as "liquid biopsy" offers what tissue biopsies cannot-a continuous monitoring of tumor-specific changes during the entire course of the disease. Owing to technological improvements, efforts for the establishment of preanalytical and analytical benchmark, and the inclusion of ctDNA analyses in clinical trial, an actual clinical implementation has come within easy reach...
2017: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/28431544/strategies-for-monitoring-and-combating-resistance-to-combination-kinase-inhibitors-for-cancer-therapy
#2
REVIEW
Leanne G Ahronian, Ryan B Corcoran
Targeted therapies such as kinase inhibitors and monoclonal antibodies have dramatically altered cancer care in recent decades. Although these targeted therapies have improved patient outcomes in several cancer types, resistance ultimately develops to these agents. One potential strategy proposed to overcome acquired resistance involves taking repeat tumor biopsies at the time of disease progression, to identify the specific molecular mechanism driving resistance in an individual patient and to select a new agent or combination of agents capable of surmounting that specific resistance mechanism...
April 21, 2017: Genome Medicine
https://www.readbyqxmd.com/read/28431395/correlation-of-genomic-alterations-assessed-by-next-generation-sequencing-ngs-of-tumor-tissue-dna-and-circulating-tumor-dna-ctdna-in-metastatic-renal-cell-carcinoma-mrcc-potential-clinical-implications
#3
Andrew W Hahn, David M Gill, Benjamin Maughan, Archana Agarwal, Lubina Arjyal, Sumati Gupta, Jessica Streeter, Erin Bailey, Sumanta K Pal, Neeraj Agarwal
INTRODUCTION: Tumor tissue and circulating tumor DNA (ctDNA) next-generation sequencing (NGS) testing are frequently performed to detect genomic alterations (GAs) to help guide treatment in metastatic renal cell carcinoma (mRCC), especially after progression on standard systemic therapy. Our objective was to assess if GAs detected by ctDNA NGS are different from those detected by tumor tissue NGS, specifically in patients with mRCC, and if these platforms are interchangeable or complimentary...
April 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28430637/clinical-utility-of-circulating-cell-free-epstein-barr-virus-dna-in-patients-with-gastric-cancer
#4
Katsutoshi Shoda, Daisuke Ichikawa, Yuji Fujita, Kiyoshi Masuda, Hidekazu Hiramoto, Junichi Hamada, Tomohiro Arita, Hirotaka Konishi, Toshiyuki Kosuga, Shuhei Komatsu, Atsushi Shiozaki, Kazuma Okamoto, Issei Imoto, Eigo Otsuji
Recent comprehensive molecular subtyping of gastric cancer (GC) identified Epstein-Barr virus (EBV)-positive tumors as a subtype with distinct salient molecular and clinical features. In this study, we aimed to determine the potential utility of circulating cell-free EBV DNA as a biomarker for the detection and/or monitoring of therapeutic response in patients with EBV-associated gastric carcinoma (EBVaGC). The EBV genes-to-ribonuclease P RNA component H1 ratios (EBV ratios) in the GC tumors and plasma samples were determined by quantitative real-time polymerase chain reaction in 153 patients with GC, including 14 patients with EBVaGC diagnosed by the conventional method...
February 24, 2017: Oncotarget
https://www.readbyqxmd.com/read/28430611/prognostic-value-of-egfr-and-kras-in-circulating-tumor-dna-in-patients-with-advanced-non-small-cell-lung-cancer-a-systematic-review-and-meta-analysis
#5
REVIEW
Gaowei Fan, Kuo Zhang, Jiansheng Ding, Jinming Li
EGFR (exon 19 and exon 21) mutations in patients with advanced non-small cell lung cancer (NSCLC) treated by EGFR-TKIs are associated with a better survival; while KRAS mutations predict a worse prognosis. However, there are divergent findings regarding the prognostic value of EGFR and KRAS mutations in circulating tumor DNA (ctDNA). We aimed to summarize the evidence for the use of circulating EGFR and KRAS mutations as prognostic factors in advanced NSCLC patients.We searched the network databases for studies reporting progression-free survival (PFS) and overall survival (OS) stratified by EGFR or KRAS mutations in ctDNA in advanced NSCLC patients...
February 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28428191/the-role-of-minimal-residual-disease-testing-in-myeloma-treatment-selection-and-drug-development-current-value-and-future-applications
#6
Kenneth C Anderson, Daniel Auclair, Gary J Kelloff, Caroline C Sigman, Herve Avet-Loiseau, Ann T Farrell, Nicole J Gormley, Shaji K Kumar, Ola Landgren, Nikhil C Munshi, Michele Cavo, Faith E Davies, Alessandra Di Bacco, Jennifer S Dickey, Steven I Gutman, Howard R Higley, Mohamad A Hussein, J Milburn Jessup, Ilan R Kirsch, Richard F Little, Robert D Loberg, Jens G Lohr, Lata Mukundan, James L Omel, Trevor J Pugh, Gregory H Reaman, Michael D Robbins, A Kate Sasser, Nancy Valente, Elena Zamagni
Treatment of myeloma has benefited from the introduction of more effective and better tolerated agents, improvements in supportive care, better understanding of disease biology, revision of diagnostic criteria, and new sensitive and specific tools for disease prognostication and management. Assessment of minimal residual disease (MRD) in response to therapy is one of these tools, as longer progression-free survival (PFS) is seen consistently among patients who have achieved MRD negativity. Current therapies lead to unprecedented frequency and depth of response, and next generation flow and sequencing methods to measure MRD in bone marrow are in use and being developed with sensitivities in the range of 10(-5)‒10(-6) cells...
April 20, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28424695/b-cell-tolerance-to-deiminated-histones-in-balb-c-c57bl-6-and-autoimmune-prone-mouse-strains
#7
Nishant Dwivedi, Annica Hedberg, Ying Yi Zheng, Indira Neeli, Minoru Satoh, Laurence Morel, Ole Petter Rekvig, Marko Radic
Deimination, a posttranslational modification of arginine to citrulline carried out by peptidylarginine deiminases, may compromise tolerance of self-antigens. Patients with connective tissue autoimmunity, particularly rheumatoid arthritis (RA), systemic lupus erythematosus (SLE), or Felty's syndrome, present with autoantibodies to deiminated histones (dH), which thus form a category of antibodies to citrullinated protein antigens (ACPA). In general, ACPA are a sensitive diagnostic for RA and may form in response to the release of nuclear chromatin (DNA plus dH) from granulocytes, usually referred to as neutrophil extracellular traps...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28424339/discovery-of-double-stranded-genomic-dna-in-circulating-exosomes
#8
Raghu Kalluri, Valerie S LeBleu
It is becoming increasingly clear that small vesicles released from cells (extracellular vesicles [EVs]) represent a heterogeneous population implicated in cell-to-cell communication. The classifications and nomenclature of EVs are evolving as enrichment strategies and specific characteristics are being unraveled. At present, physical properties of EVs-namely, size, shape, and density-are often used to identify subpopulations of EVs. A distinct group of EVs, termed exosomes, largely defined by their small size (∼40-150 nm) and proposed subcellular origin, has been extensively studied in several aspects of cancer biology...
April 19, 2017: Cold Spring Harbor Symposia on Quantitative Biology
https://www.readbyqxmd.com/read/28424201/pik3ca-mutations-contribute-to-acquired-cetuximab-resistance-in-metastatic-colorectal-cancer-patients
#9
Jian Ming Xu, Yan Wang, You-Liang Wang, Yan Wang, Tao Liu, Ming Ni, Man-Sheng Li, Li Lin, Fei-Jiao Ge, Chun Gong, Jun-Yan Gu, Ru Jia, He-Fei Wang, Yu Ling Chen, Rong-Rui Liu, Chuan-Hua Zhao, Zhao-Li Tan, Yang Jin, Yunping Zhu, Shuji Ogino, Zhi Rong Qian
<p>Mutations in KRAS are considered to be the main drivers of acquired resistance to epidermal growth factor receptor (EGFR) blockade in patients with metastatic colorectal cancer (mCRC). However, the potential roles of other genes downstream of the EGFR signaling pathway in conferring acquired resistance has not been extensively investigated.</p> <br /><br />Experimental Design: <p>Using circulating tumor DNA (ctDNA) from patients with mCRC and with acquired cetuximab resistance, we developed a targeted amplicon ultra-deep sequencing method to screen for low-abundance somatic mutations in a panel of genes that encode components of the EGFR signaling pathway...
April 19, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28423572/acceleration-of-leukocytes-epigenetic-age-as-an-early-tumor-and-sex-specific-marker-of-breast-and-colorectal-cancer
#10
Danielle Fernandes Durso, Maria Giulia Bacalini, Claudia Sala, Chiara Pirazzini, Elena Marasco, Massimiliano Bonafé, Ítalo Faria do Valle, Davide Gentilini, Gastone Castellani, Ana Maria Caetano Faria, Claudio Franceschi, Paolo Garagnani, Christine Nardini
Changes in blood epigenetic age have been associated with several pathological conditions and have recently been described to anticipate cancer development. In this work, we analyze a publicly available leukocytes methylation dataset to evaluate the relation between DNA methylation age and the prospective development of specific types of cancer. We calculated DNA methylation age acceleration using five state-of-the-art estimators (three multi-site: Horvath, Hannum, Weidner; and two CpG specific: ELOV2 and FHL2) in a cohort including 845 subjects from the EPIC-Italy project and we compared 424 samples that remained cancer-free over the approximately ten years of follow-up with 235 and 166 subjects who developed breast and colorectal cancer, respectively...
April 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28423167/what-pre-columbian-mummies-could-teach-us-about-south-american-leishmaniases
#11
Denis Sereno, Mohammad Akhoundi, Franck Dorkeld, Bruno Oury, Hooman Momen, Pascale Perrin
A recent report on the taxonomic profile of the human gut microbiome in pre-Columbian mummies (Santiago-Rodriguez et al. 2016) gives for the first time evidence of the presence of Leishmania DNA (sequences similar to Leishmania donovani according to the authors) that can be reminiscent of visceral leishmaniasis during the pre-Columbian era. It is commonly assumed that Leishmania infantum, the etiological agent of American visceral leishmaniasis (AVL) was introduced into the New World by the Iberian conquest...
April 1, 2017: Pathogens and Disease
https://www.readbyqxmd.com/read/28420725/monitoring-daily-dynamics-of-early-tumor-response-to-targeted-therapy-by-detecting-circulating-tumor-dna-in-urine
#12
Hatim Husain, Vladislava O Melnikova, Karena Kosco, Brian Woodward, Soham More, Sandeep C Pingle, Elizabeth Weihe, Ben Ho Park, Muneesh Tewari, Mark G Erlander, Ezra E W Cohen, Scott M Lippman, Razelle Kurzrock
Purpose: Non-invasive drug biomarkers for the early assessment of tumor response can enable adaptive therapeutic decision-making and proof-of-concept studies for investigational drugs. Circulating tumor DNA (ctDNA) is released into the circulation by tumor cell turnover and has been shown to be detectable in urine. Experimental Design : We tested the hypothesis that dynamic changes in epidermal growth factor receptor (EGFR) activating (exon 19del and L858R) and resistance (T790M) mutation levels detected in urine could inform tumor response within days of therapy for advanced non-small cell lung cancer (NSCLC) patients receiving osimertinib, a second line third generation anti-EGFR tyrosine kinase inhibitor...
April 18, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28420618/research-progress-on-liquid-biopsy-in-oncology-and-its-clinical-applications
#13
Wang Chen, Li Yanming, Fang Xiangdong
Liquid biopsy is an emerging and promising detection tool for cancer, with the benefit of being non-invasive and convenient. It analyzes tumor-derived information in the blood or other body fluids including circulating tumour cells (CTCs), circulating tumour DNA (ctDNA) and exosomes. Nowadays, with the expansion of liquid biopsy research contents and the development of capture and detection technologies, liquid biopsy is increasingly utilized in clinical applications, promoting the development of tumor precision medicine...
March 20, 2017: Yi Chuan, Hereditas
https://www.readbyqxmd.com/read/28420468/-effect-of-heparin-pretreatment-on-the-level-of-neutrophil-extracellular-traps-of-serum-and-lung-tissue-in-septic-mice
#14
Jing Jiang, Shengtian Mu, Fangxiao Zhang, Yanting Qiao, Yongran Wu, Zhidan Zhang, Xiaochun Ma
OBJECTIVE: To investigate the influence of heparin pretreatment on serum and lung tissue level of neutrophil extracellular traps (NETs) in septic mice model and its molecular mechanism. METHODS: Ninety male C57BL/6J mice were randomly divided into control group (n = 30), lipopolysaccharides (LPS) group (n = 30, 30 mg/kg LPS in 100 ?L normal saline was intraperitoneally injected) and LPS+heparin group (n = 30, 8 U of heparin in 20 ?L normal saline was subcutaneously injected 30 minutes before the injection of LPS)...
April 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28420389/assessment-of-copy-number-variation-in-genes-related-to-drug-resistance-in-plasmodium-vivax-and-plasmodium-falciparum-isolates-from-the-brazilian-amazon-and-a-systematic-review-of-the-literature
#15
Gabriel Luíz Costa, Lara Cotta Amaral, Cor Jesus Fernandes Fontes, Luzia Helena Carvalho, Cristiana Ferreira Alves de Brito, Taís Nóbrega de Sousa
BACKGROUND: Parasite resistance to anti-malarials represents a great obstacle for malaria elimination. The majority of studies have investigated the association between single-nucleotide polymorphisms (SNPs) and drug resistance; however, it is becoming clear that the copy number variation (CNV) is also associated with this parasite phenotype. To provide a baseline for molecular surveillance of anti-malarial drug resistance in the Brazilian Amazon, the present study characterized the genetic profile of both markers in the most common genes associated with drug resistance in Plasmodium falciparum and Plasmodium vivax isolates...
April 19, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28420103/electrochemical-genosensing-of-circulating-biomarkers
#16
REVIEW
Susana Campuzano, Paloma Yáñez-Sedeño, José Manuel Pingarrón
Management and prognosis of diseases requires the measurement in non- or minimally invasively collected samples of specific circulating biomarkers, consisting of any measurable or observable factors in patients that indicate normal or disease-related biological processes or responses to therapy. Therefore, on-site, fast and accurate determination of these low abundance circulating biomarkers in scarcely treated body fluids is of great interest for health monitoring and biological applications. In this field, electrochemical DNA sensors (or genosensors) have demonstrated to be interesting alternatives to more complex conventional strategies...
April 14, 2017: Sensors
https://www.readbyqxmd.com/read/28419195/plasma-ctdna-ras-mutation-analysis-for-the-diagnosis-and-treatment-monitoring-of-metastatic-colorectal-cancer-patients
#17
J Vidal, L Muinelo, A Dalmases, F Jones, D Edelstein, M Iglesias, M Orrillo, A Abalo, C Rodríguez, E Brozos, Y Vidal, S Candamio, F Vázquez, J Ruiz, M Guix, L Visa, V Sikri, J Albanell, B Bellosillo, R López, C Montagut
Background: RAS assessement is mandatory for therapy decision in metastatic colorectal cancer (mCRC) patients. This determination is based on tumor tissue, however genotyping of circulating tumor (ct)DNA offers clear advantages as a minimally invasive method that represents tumor heterogeneity. Our study aims to evaluate the use of ctDNA as an alternative determining baseline RAS status and subsequent monitoring of RAS mutations during therapy as a component of routine clinical practice...
April 13, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28418003/toll-like-receptor-polymorphisms-compromise-the-inflammatory-response-against-bacterial-antigen-translocation-in-cirrhosis
#18
Paula Piñero, Oriol Juanola, Esther Caparrós, Pedro Zapater, Paula Giménez, José M González-Navajas, José Such, Rubén Francés
Bacterial translocation is associated with clinically relevant complications in cirrhosis. We evaluated the effect of toll-like receptor polymorphisms in the soluble response against these episodes. Consecutive patients with cirrhosis and ascitic fluid were distributed by TLR2 rs4696480, TLR4 rs4986790, and TLR9 rs187084 single-nucleotide polymorphisms. Lipoteichoic acid, lipopolyssaccharide, bacterial-DNA, pro-inflammatory cytokines and nitric oxide levels were quantified in serum samples. In vitro response against specific ligands in variant TLR genotypes was evaluated...
April 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28417079/detection-of-copy-number-alterations-in-cell-free-tumor-dna-from-plasma
#19
Olga Østrup, Lise Barlebo Ahlborn, Ulrik Lassen, Morten Mau-Sørensen, Finn Cilius Nielsen
BACKGROUND: Somatic copy number alterations (SCNAs) occurring in tumors can provide information about tumor classification, patient's outcome or treatment targets. Liquid biopsies, incl. plasma samples containing circulating cell-free tumor DNA (ccfDNA) can be used to assess SCNAs for clinical purposes, however specify and reliability of methods have to be tested. METHODS: SNP microarrays (Affymetrix) were used to generate whole-genome copy number profiles from plasma ccfDNA (OncoScan) and paired tumor biopsies (CytoScan) from ten patients with metastatic cancers...
June 2017: BBA Clinical
https://www.readbyqxmd.com/read/28416949/circulating-tumor-dna-in-a-breast-cancer-patient-s-plasma-represents-driver-alterations-in-the-tumor-tissue
#20
Jieun Lee, Sung-Min Cho, Min Sung Kim, Sug Hyung Lee, Yeun-Jun Chung, Seung-Hyun Jung
Tumor tissues from biopsies or surgery are major sources for the next generation sequencing (NGS) study, but these procedures are invasive and have limitation to overcome intratumor heterogeneity. Recent studies have shown that driver alterations in tumor tissues can be detected by liquid biopsy which is a less invasive technique capable of both capturing the tumor heterogeneity and overcoming the difficulty in tissue sampling. However, it is still unclear whether the driver alterations in liquid biopsy can be detected by targeted NGS and how those related to the tissue biopsy...
March 2017: Genomics & Informatics
keyword
keyword
28569
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"