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Tumor heterogeneity

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https://www.readbyqxmd.com/read/29045981/renal-ewing-s-sarcoma-primitive-neuroectodermal-tumor-a-case-report-and-literature-review
#1
C Liu, L G Cui, H L Wang
Ewing's sarcoma/primitive neuroectodermal tumor (EWS/PNET) in the kidney is a rare but high-grade malignant tumor that affects predominantly elder children and adolescents. Patients mostly present with nonspecific symptoms such as abdominal pain and gross hematuria. Since EWS/PNET has a rapid clinical progression with early metastasis and death, it is essential to make an accurate and early diagnosis. Once diagnosed, multimodality treatment, including radical surgery combined with adjuvant chemotherapy, and radiotherapy if necessary, is recommended...
October 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/29045538/not-only-tumor-but-also-therapy-heterogeneity
#2
S Garattini, I Fuso Nerini, M D'Incalci
No abstract text is available yet for this article.
October 12, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/29045525/clinical-benefit-of-systemic-treatment-in-patients-with-advanced-pancreatic-and-gastro-intestinal-neuroendocrine-tumours-according-to-esmo-mcbs-and-asco-framework
#3
L D de Hosson, L M van Veenendaal, Y Schuller, W T Zandee, W W de Herder, M E T Tesselaar, H J Klümpen, A M E Walenkamp
BackgroundAssessment of clinical benefit of systemic treatments of rare diseases including gastroenteropancreatic neuroendocrine tumors (GEP-NET) is challenging. Recently several tools have been developed to grade clinical benefit of cancer drugs. European Society for Medical Oncology (ESMO) has developed the ESMO Magnitude of Clinical Benefit Scale (ESMO-MCBS). The American Society of Clinical Oncology (ASCO) developed and revised the ASCO framework consisting of the Net Health Benefit (NHB) score juxtaposed against the costs of the treatment...
September 26, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/29045514/exploratory-analysis-of-the-association-of-depth-of-response-and-survival-in-patients-with-metastatic-non-small-cell-lung-cancer-treated-with-a-targeted-therapy-or-immunotherapy
#4
C E McCoach, G M Blumenthal, L Zhang, A Myers, S Tang, R Sridhara, P Keegan, R Pazdur, R C Doebele, D Kazandjian
Background: Response Evaluation Criteria in Solid Tumors (RECIST) permits rapid evaluation of new therapeutic strategies in cancer. However, RECIST does not capture the heterogeneity of response in highly active therapies. Depth of tumor response may provide a more granular view of response. We explored the association between, depth of response (DepOR), with overall survival (OS) and progression free survival (PFS) for patients with NSCLC being treated with an ALK inhibitor (ALKi) or an anti-PD-1 antibody (Ab)...
August 2, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/29045506/clinical-and-molecular-characterization-of-patients-with-cancers-of-unknown-primary-in-the-modern-era
#5
A M Varghese, A Arora, M Capanu, N Camacho, H H Won, A Zehir, J Gao, D Chakravarty, N Schultz, D S Klimstra, M Ladanyi, D M Hyman, D B Solit, M F Berger, L B Saltz
Background: On the basis of historical data, patients with cancers of unknown primary (CUP) are generally assumed to have a dismal prognosis with overall survival of less than one year. Treatment is typically cytotoxic chemotherapy guided by histologic features and the pattern of metastatic spread. The purpose of this study was to provide a clinical and pathologic description of patients with CUP in the modern era, to define the frequency of clinically actionable molecular alterations in this population, to determine how molecular testing can alter therapeutic decisions, and to investigate novel uses of next generation sequencing in the evaluation and treatment of patients with CUP...
September 26, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/29045176/computer-aided-diagnosis-of-ground-glass-opacity-nodules-using-open-source-software-for-quantifying-tumor-heterogeneity
#6
Ming Li, Vivek Narayan, Ritu R Gill, Jyothi P Jagannathan, Maria F Barile, Feng Gao, Raphael Bueno, Jagadeesan Jayender
OBJECTIVE: The purposes of this study are to develop quantitative imaging biomarkers obtained from high-resolution CTs for classifying ground-glass nodules (GGNs) into atypical adenomatous hyperplasia (AAH), adenocarcinoma in situ (AIS), minimally invasive adenocarcinoma (MIA), and invasive adenocarcinoma (IAC); to evaluate the utility of contrast enhancement for differential diagnosis; and to develop and validate a support vector machine (SVM) to predict the GGN type. MATERIALS AND METHODS: The heterogeneity of 248 GGNs was quantified using custom software...
October 18, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29044908/tumor-radiomic-heterogeneity-multiparametric-functional-imaging-to-characterize-variability-and-predict-response-following-cervical-cancer-radiation-therapy
#7
Stephen R Bowen, William T C Yuh, Daniel S Hippe, Wei Wu, Savannah C Partridge, Saba Elias, Guang Jia, Zhibin Huang, George A Sandison, Dennis Nelson, Michael V Knopp, Simon S Lo, Paul E Kinahan, Nina A Mayr
BACKGROUND: Robust approaches to quantify tumor heterogeneity are needed to provide early decision support for precise individualized therapy. PURPOSE: To conduct a technical exploration of longitudinal changes in tumor heterogeneity patterns on dynamic contrast-enhanced (DCE) magnetic resonance imaging (MRI), diffusion-weighted imaging (DWI) and FDG positron emission tomography / computed tomography (PET/CT), and their association to radiation therapy (RT) response in cervical cancer...
October 16, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29044896/support-vector-machine-for-breast-cancer-classification-using-diffusion-weighted-mri-histogram-features-preliminary-study
#8
Igor Vidić, Liv Egnell, Neil P Jerome, Jose R Teruel, Torill E Sjøbakk, Agnes Østlie, Hans E Fjøsne, Tone F Bathen, Pål Erik Goa
BACKGROUND: Diffusion-weighted MRI (DWI) is currently one of the fastest developing MRI-based techniques in oncology. Histogram properties from model fitting of DWI are useful features for differentiation of lesions, and classification can potentially be improved by machine learning. PURPOSE: To evaluate classification of malignant and benign tumors and breast cancer subtypes using support vector machine (SVM). STUDY TYPE: Prospective. SUBJECTS: Fifty-one patients with benign (n = 23) and malignant (n = 28) breast tumors (26 ER+, whereof six were HER2+)...
October 16, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29044582/provider-views-on-the-management-of-ewing-sarcoma-of-the-spine-and-pelvis
#9
Chong Zhu, Kristofor A Olson, Michael Roth, David S Geller, Richard G Gorlick, Jonathan Gill, Nadia N Laack, R L Randall
BACKGROUND: Curative therapy for ES requires both chemotherapy and local control of primary tumor. There is no universally accepted standard approach to local control modalities. This survey was conducted to determine practice patterns and factors influencing the choice to offer various local control modalities to patients with ES of the spine and pelvis. METHODS: The survey consisted of four scenarios involving a 15-year-old girl who presented with Ewing sarcoma of thoracic vertebra, sacrum, iliac wing, and acetabulum with or without neurologic compromise...
October 16, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/29044199/fluorescence-coded-dna-nanostructure-probe-system-to-enable-discrimination-of-tumor-heterogeneity-via-a-screening-of-dual-intracellular-microrna-signatures-in-situ
#10
Seung Won Shin, Byoung Sang Lee, Kisuk Yang, Lunjakorn Amornkitbamrung, Min Su Jang, Bo Mi Ku, Seung-Woo Cho, Jung Heon Lee, Hojae Bae, Byung-Keun Oh, Myung-Ju Ahn, Yong Taik Lim, Soong Ho Um
Since the delivery kinetics of different cell types are different, the signal from the target cell is greatly affected by the noise signal of the diagnostic system. This is a major obstacle hindering the practical application of intracellular diagnostic systems, such as tumor heterogeneity. To address these issues, here we present a microRNA detection platform using fluorescence-encoded nanostructured DNA-based probes. The nanostructured DNA was designed to include molecular beacons for detecting cytosolic microRNA as well as additional fluorophores...
October 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29040995/role-of-immune-checkpoint-blockade-in-the-treatment-for-human-hepatocellular-carcinoma
#11
Naoshi Nishida, Masatoshi Kudo
With the development of molecular targeting therapy, several treatment options for advanced hepatocellular carcinoma (HCC) have become available in cases where curative and other palliative treatments, such as radiofrequency ablation, surgical resection, and transarterial chemoembolization, are not applicable. However, with the detection of a variety of mutations in cancer-related genes in a single tumor, molecular heterogeneity is commonly observed in HCC. Therefore, mutations in the major cellular signaling pathways underlie the development of resistance to molecular targeting agents...
2017: Digestive Diseases
https://www.readbyqxmd.com/read/29040992/time-to-transcatheter-arterial-chemoembolization-refractoriness-in-patients-with-hepatocellular-carcinoma-in-kinki-criteria-stages-b1-and-b2
#12
Tadaaki Arizumi, Tomohiro Minami, Hirokazu Chishina, Masashi Kono, Masahiro Takita, Norihisa Yada, Satoru Hagiwara, Yasunori Minami, Hiroshi Ida, Kazuomi Ueshima, Ken Kamata, Kosuke Minaga, Yoriaki Komeda, Mamoru Takenaka, Toshiharu Sakurai, Tomohiro Watanabe, Naoshi Nishida, Masatoshi Kudo
BACKGROUND: Transarterial chemoembolization (TACE) is recommended for patients with hepatocellular carcinoma (HCC) in Barcelona Clinic Liver Cancer (BCLC) stage B. However, because of the heterogeneity of HCC in BCLC stage B; various subclassification systems have been proposed to predict the prognosis of patients. Previously, we proposed the Kinki criteria for precise classification of HCC cases in BCLC stage B. In this study, we compared the time to TACE refractoriness in HCC patients with Kinki criteria substages B1 and B2-HCC...
2017: Digestive Diseases
https://www.readbyqxmd.com/read/29040991/impact-of-tumor-factors-on-survival-in-patients-with-hepatocellular-carcinoma-classified-based-on-kinki-criteria-stage-b2
#13
Tadaaki Arizumi, Tomohiro Minami, Hirokazu Chishina, Masashi Kono, Masahiro Takita, Norihisa Yada, Satoru Hagiwara, Yasunori Minami, Hiroshi Ida, Kazuomi Ueshima, Ken Kamata, Kosuke Minaga, Yoriaki Komeda, Mamoru Takenaka, Toshiharu Sakurai, Tomohiro Watanabe, Naoshi Nishida, Masatoshi Kudo
BACKGROUND: Tumors classified based on the Barcelona Clinic Liver Cancer (BCLC) stage B hepatocellular carcinoma (HCC) are heterogeneous in nature. Previously, the Kinki criterion was proposed for a more precise subclassification of tumors in BCLC-stage B. However, tumors in sub-stage B2 include various size and number of HCCs even with the Kinki criteria, which could lead to heterogeneity for overall survival (OS). In this study, we assessed how the size and number of tumors affect the OS and time to progression (TTP) in patients with Kinki criteria stage B2 tumors and treated with transarterial chemoembolization (TACE)...
2017: Digestive Diseases
https://www.readbyqxmd.com/read/29040981/abdominal-ultrasound-findings-of-tumor-forming-hepatic-malignant-lymphoma
#14
Shogo Kitahata, Atsushi Hiraoka, Masatoshi Kudo, Taisei Murakami, Marie Ochi, Hirofumi Izumoto, Hidetaro Ueki, Miho Kaneto, Toshihiko Aibiki, Tomonari Okudaira, Hiroka Yamago, Yuji Miyamoto, Ryuichiro Iwasaki, Hideomi Tomida, Kenichiro Mori, Masato Kishida, Hideki Miyata, Eiji Tsubouchi, Masashi Hirooka, Yohei Koizumi, Tomoyuki Ninomiya, Yoichi Hiasa, Kojiro Michitaka
AIM/BACKGROUND: Evaluations of abdominal ultrasonography (US) findings of primary and secondary tumor-forming hepatic malignant lymphoma (HML) have not been adequately reported. In this study, we elucidated US and contrast-enhanced US (CEUS) findings in patients with HML. MATERIALS/METHODS: From January 2006 to March 2017, 25 patients with HML were enrolled (primary 7, secondary 18), each of whom was diagnosed pathologically. They were divided into 2 groups based on tumor diameter (cutoff, 30 mm)...
2017: Digestive Diseases
https://www.readbyqxmd.com/read/29040782/egfr-heterogeneity-and-implications-for-therapeutic-intervention-in-glioblastoma
#15
Eskil Eskilsson, Gro V Røsland, Gergely Solecki, Qianghu Wang, Patrick N Harter, Grazia Graziani, Roel G W Verhaak, Frank Winkler, Rolf Bjerkvig, Hrvoje Miletic
Patients with glioblastoma (GBM) have a universally poor prognosis and are in urgent need of effective treatment strategies. Recent advances in sequencing techniques unraveled the complete genomic landscape of GBMs and revealed profound heterogeneity of individual tumors even at the single cell level. Genomic profiling has detected epidermal growth factor receptor (EGFR) gene alterations in more than half of GBMs. Major genetic events include amplification and mutation of EGFR. Yet, treatment strategies targeting EGFR have thus far failed in clinical trials...
October 10, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/29040196/carcinoid-syndrome-complicating-a-pancreatic-neuroendocrine-tumor-a-case-report
#16
James N Gerson, Ronald M Witteles, Daniel T Chang, Ramin E Beygui, Andrei H Iagaru, Pamela L Kunz
Neuroendocrine tumors (NETs) comprise a heterogeneous group of neoplasms. These tumors can produce a wide variety of hormones that can lead to syndromes of hormone excess, such as carcinoid syndrome. We present the case of a 47-year-old man who presented with right upper quadrant abdominal pain and emesis. He was found to have metastatic pancreatic NET and was treated with systemic chemotherapy. He subsequently developed dyspnea on exertion and was found to have severe right-sided heart disease secondary to elevated levels of serum serotonin...
November 2017: Pancreas
https://www.readbyqxmd.com/read/29039999/treatment-and-survival-of-childhood-neuroblastoma-evidence-from-a-population-based-study-in-the-united-states
#17
Dairmuid Coughlan, Matthew Gianferante, Charles F Lynch, Jennifer L Stevens, Linda C Harlan
BACKGROUND: Childhood neuroblastoma describes a heterogeneous group of extracranial solid tumors, that are treated per risk profile. We sought to describe treatment patterns and survival using population-based data from throughout the United States. MATERIALS AND METHODS: Using the National Cancer Institute (NCI)'s Patterns of Care data, we analyzed treatment provided to newly diagnosed, histologically confirmed neuroblastoma patients in 2010 and 2011, registered to one of 14 Surveillance, Epidemiology, and End Results (SEER) cancer registries...
October 17, 2017: Pediatric Hematology and Oncology
https://www.readbyqxmd.com/read/29038849/malignant-bone-tumors-other-than-ewing-s-clinical-practice-guidelines-for-diagnosis-treatment-and-follow-up-by-spanish-group-for-research-on-sarcomas-geis
#18
Andrés Redondo, Silvia Bagué, Daniel Bernabeu, Eduardo Ortiz-Cruz, Claudia Valverde, Rosa Alvarez, Javier Martinez-Trufero, Jose A Lopez-Martin, Raquel Correa, Josefina Cruz, Antonio Lopez-Pousa, Aurelio Santos, Xavier García Del Muro, Javier Martin-Broto
Primary malignant bone tumors are uncommon and heterogeneous malignancies. This document is a guideline developed by the Spanish Group for Research on Sarcoma with the participation of different specialists involved in the diagnosis and treatment of bone sarcomas. The aim is to provide practical recommendations with the intention of helping in the clinical decision-making process. The diagnosis and treatment of bone tumors requires a multidisciplinary approach, involving as a minimum pathologists, radiologists, surgeons, and radiation and medical oncologists...
October 16, 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/29038591/genomics-alterations-of-metastatic-and-primary-tissues-across-15-cancer-types
#19
Gang Liu, Xiaohui Zhan, Chuanpeng Dong, Lei Liu
Metastasis is an important event for cancer evolution and prognosis. In this article, we analyzed the differences in genomic alterations between primary and metastatic tissues at hotspot regions in 15 cancer types and 10,456 samples. Differential somatic mutations at the amino acid, protein domain and gene levels, mutational exclusiveness, and copy number variations were identified in these cancers, while no significant nucleotide and gene fusion differences were detected. The homogeneity and heterogeneity of these differences in cancers were also detected...
October 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29036598/global-dna-methylation-analysis-reveals-mir-214-3p-contributes-to-cisplatin-resistance-in-pediatric-intracranial-nongerminomatous-malignant-germ-cell-tumors
#20
Tsung-Han Hsieh, Yun-Ru Liu, Ting-Yu Chang, Muh-Lii Liang, Hsin-Hung Chen, Hsei-Wei Wang, Yun Yen, Tai-Tong Wong
Background: Pediatric central nervous system germ cell tumors (CNSGCTs) are rare and heterogeneous neoplasms, and they can be divided into germinomas and nongerminomatous GCTs (NGGCTs). NGGCTs are further subdivided into mature teratomas and nongerminomatous malignant GCTs (NGMGCTs). Clinical outcomes suggest that NGMGCTs have poor prognosis and survival, and that they require more extensive radiotherapy and adjuvant chemotherapy. However, the mechanisms underlying this difference are still unclear...
October 3, 2017: Neuro-oncology
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