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Stratified medicine in cancer

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https://www.readbyqxmd.com/read/28772289/association-of-mismatch-repair-mutation-with-age-at-cancer-onset-in-lynch-syndrome-implications-for-stratified-surveillance-strategies
#1
Neil A J Ryan, Julie Morris, Kate Green, Fiona Lalloo, Emma R Woodward, James Hill, Emma J Crosbie, D Gareth Evans
Importance: Lynch syndrome is caused by dominantly inherited germline mutations that predispose individuals to colorectal, endometrial, ovarian, and other cancers through inactivation of the cellular mismatch repair system. Lynch syndrome-associated cancers are amenable to surveillance strategies that may improve survival. The age at which surveillance should start is disputed. Objective: To determine whether mutated gene and type of mutation influence age at onset of Lynch syndrome-associated cancers...
August 3, 2017: JAMA Oncology
https://www.readbyqxmd.com/read/28765138/attitudes-on-cost-effectiveness-and-equity-a-cross-sectional-study-examining-the-viewpoints-of-medical-professionals
#2
David G Li, Gordon X Wong, David T Martin, David J Tybor, Jennifer Kim, Jeffrey Lasker, Roger Mitty, Deeb Salem
OBJECTIVE: To determine the attitudes of physicians and trainees in regard to the roles of both cost-effectiveness and equity in clinical decision making. DESIGN: In this cross-sectional study, electronic surveys containing a hypothetical decision-making scenario were sent to medical professionals to select between two colon cancer screening tests for a population. SETTING: Three Greater Boston academic medical institutions: Tufts University School of Medicine, Tufts Medical Centre and Lahey Hospital and Medical Centre...
August 1, 2017: BMJ Open
https://www.readbyqxmd.com/read/28761750/european-medicines-agency-approval-summary-zaltrap-for-the-treatment-of-patients-with-oxaliplatin-resistant-metastatic-colorectal-cancer
#3
REVIEW
Stefan Cristian Stanel, Jan Sjöberg, Tomas Salmonson, Paolo Foggi, Mariapaola Caleno, Daniela Melchiorri, Iordanis Gravanis, Kyriaki Tzogani, Francesco Pignatti
On 1 February 2013, a marketing authorisation valid throughout the European Union was issued for aflibercept (Zaltrap) in combination with irinotecan/5-fluorouracil/folinic acid chemotherapy for the treatment of adults with metastatic colorectal cancer resistant to or progressive after an oxaliplatin-containing regimen. Aflibercept is a recombinant fusion protein which blocks the activation of vascular endothelial growth factor (VEGF) receptors and the proliferation of endothelial cells, acting as a soluble decoy receptor that binds to VEGF-A with higher affinity than its native receptors, as well as placental growth factor and VEGF-B...
2017: ESMO Open
https://www.readbyqxmd.com/read/28744793/application-of-liquid-biopsy-in-precision-medicine-opportunities-and-challenges
#4
REVIEW
Junyun Wang, Shuang Chang, Guochao Li, Yingli Sun
Precision medicine for cancer patients aims to adopt the most suitable treatment options during diagnosis and treatment of individuals. Detecting circulating tumor cell (CTC) or circulating tumor DNA (ctDNA) in plasma or serum could serve as liquid biopsy, which would be useful for numerous diagnostic applications. Liquid biopsies can help clinicians screen and detect cancer early, stratify patients to the most suitable treatment and real-time monitoring of treatment response and resistance mechanisms in the tumor, evaluate the risk for metastatic relapse, and estimate prognosis...
July 25, 2017: Frontiers of Medicine
https://www.readbyqxmd.com/read/28734822/icotinib-versus-whole-brain-irradiation-in-patients-with-egfr-mutant-non-small-cell-lung-cancer-and-multiple-brain-metastases-brain-a-multicentre-phase-3-open-label-parallel-randomised-controlled-trial
#5
Jin-Ji Yang, Caicun Zhou, Yisheng Huang, Jifeng Feng, Sun Lu, Yong Song, Cheng Huang, Gang Wu, Li Zhang, Ying Cheng, Chengping Hu, Gongyan Chen, Li Zhang, Xiaoqing Liu, Hong Hong Yan, Fen Lai Tan, Wenzhao Zhong, Yi-Long Wu
BACKGROUND: For patients with non-small-cell lung cancer (NSCLC) and multiple brain metastases, whole-brain irradiation (WBI) is a standard-of-care treatment, but its effects on neurocognition are complex and concerning. We compared the efficacy of an epidermal growth factor receptor (EGFR)-tyrosine kinase inhibitor (TKI), icotinib, versus WBI with or without chemotherapy in a phase 3 trial of patients with EGFR-mutant NSCLC and multiple brain metastases. METHODS: We did a multicentre, open-label, parallel randomised controlled trial (BRAIN) at 17 hospitals in China...
July 19, 2017: Lancet Respiratory Medicine
https://www.readbyqxmd.com/read/28733195/the-evolving-role-of-companion-diagnostics-for-breast-cancer-in-an-era-of-next-generation-omics
#6
REVIEW
Jason N Rosenbaum, Paul Weisman
A companion diagnostic is a test for a specific biomarker-approved by the United States Food and Drug Administration-qualifying a patient to receive a specific, associated therapy. As interest has grown in precision medicine over the past decade, the principle of companion diagnostics has gained increasing purchase among laboratory professionals, clinicians, regulators, and even patients. The evolution of the biomarkers used to stratify and treat breast cancer illustrates the history of companion diagnostics and provides a lens through which to examine potential challenges...
July 19, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28708584/clinicopathological-and-prognostic-significance-of-hmga2-overexpression-in-gastric-cancer-a-meta-analysis
#7
Jingyi Zhu, Hailong Wang, Shuangnian Xu, Yingxue Hao
BACKGROUND: High mobility group protein A2 (HMGA2) overexpression has been reported to be closely related to tumor progression [1-4] and indicate significantly worse overall survival in gastric cancer [5-8]. However, a final consensus regarding this issue has not yet been reached. Thus, we conducted a meta-analysis to evaluate the association between HMGA2 expression and prognosis of gastric cancer patients. METHODS: The Cochrane Library, Embase, PubMed, Web of Science and China Biology Medicine databases were searched to identify eligible literature published prior to September 2016...
July 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/28674227/a-systematic-analysis-of-the-association-studies-between-casp8-d302h-polymorphisms-and-breast-cancer-risk
#8
Yinliang Zhang, Wei Li, Yi Hong, Guoying Wu, Kan He, Dahai Liu
Caspase 8 (CASP8) is a regulator of apoptosis, whose genetic variation has been reported to be associated with the risk of various cancers. Especially, the single-nucleotide polymorphism (SNP) rs1045485, which generates the substitution D302H in CASP8, is likely to be associated with breast cancer. Several previous studies have reported the association of CASP8 D302H polymorphism with breast cancer; however, the results are inconsistent. To validate the association between CASP8 D302H polymorphism and breast cancer risk, we performed an updated meta-analysis of 18 studies including 27,807 cases and 32,332 controls...
June 2017: Journal of Genetics
https://www.readbyqxmd.com/read/28649643/molecular-stratification-of-early-breast-cancer-identifies-drug-targets-to-drive-stratified-medicine
#9
Jane Bayani, Cindy Q Yao, Mary Anne Quintayo, Fu Yan, Syed Haider, Alister D'Costa, Cassandra L Brookes, Cornelis J H van de Velde, Annette Hasenburg, Dirk G Kieback, Christos Markopoulos, Luc Dirix, Caroline Seynaeve, Daniel Rea, Paul C Boutros, John M S Bartlett
Many women with hormone receptor-positive early breast cancer can be managed effectively with endocrine therapies alone. However, additional systemic chemotherapy treatment is necessary for others. The clinical challenges in managing high-risk women are to identify existing and novel druggable targets, and to identify those who would benefit from these therapies. Therefore, we performed mRNA abundance analysis using the Tamoxifen and Exemestane Adjuvant Multinational (TEAM) trial pathology cohort to identify a signature of residual risk following endocrine therapy and pathways that are potentially druggable...
2017: NPJ Breast Cancer
https://www.readbyqxmd.com/read/28620736/revisiting-prostate-cancer-screening-practices-among-vermont-primary-care-physicians
#10
Laura Donnelly, Kevan M Sternberg, Takamaru Ashikaga, Mark K Plante, Scott D Perrapato
The objective of this study was to assess the prostate cancer screening practices of Vermont primary care physicians and compare them with a prior study in 2001. An electronic survey was created and emailed to all currently practicing primary care physicians in Vermont. Data was stratified by practice length, practice location, university affiliation, and internal medicine versus family practice. Surveys were received from 123 (27.2%) primary care physicians. 27.7% of physicians in practice <10 years recommended prostate specific antigen (PSA) testing, compared with 55...
June 15, 2017: Journal of Community Health
https://www.readbyqxmd.com/read/28511612/ngs-analysis-on-tumor-tissue-and-cfdna-for-genotype-directed-therapy-in-metastatic-nsclc-patients-between-hope-and-hype
#11
Alexander T Falk, Simon Heeke, Véronique Hofman, Virginie Lespinet, Camille Ribeyre, Olivier Bordone, Michel Poudenx, Josiane Otto, Georges Garnier, Olivier Castelnau, Joël Guigay, Sylvie Leroy, Charles-Hugo Marquette, Paul Hofman, Marius Ilié
The advent of genomic based precision medicine led to the implementation of biomarker testing in metastatic non-small cell lung cancer (NSCLC) patients. Next generation sequencing (NGS) has been recently implemented to routine diagnostic requirements in lung oncology. Areas covered: Two cases of patients with metastatic NSCLC for whom NGS analysis performed on both tumor and liquid biopsy has not improved the clinical course of their disease are reported. These cases illustrate the difficulty of the so-called 'personalized or precision' medicine in clinical routine practice for metastatic NSCLC...
August 2017: Expert Review of Anticancer Therapy
https://www.readbyqxmd.com/read/28431457/precision-medicine-and-pharmacogenetics-what-does-oncology-have-that-addiction-medicine-does-not
#12
Henry R Kranzler, Rachel V Smith, Robert Schnoll, Afaf Moustafa, Emma Greenstreet-Akman
BACKGROUND AND AIMS: Precision, personalized or stratified medicine, which promises to deliver the right treatment to the right patient, is a topic of international interest in both the lay press and the scientific literature. A key aspect of precision medicine is the identification of biomarkers that predict the response to medications (i.e. pharmacogenetics). We examined why, despite the great strides that have been made in biomarker identification in many areas of medicine, only in oncology has there been substantial progress in their clinical implementation...
April 21, 2017: Addiction
https://www.readbyqxmd.com/read/28403106/baseline-serum-albumin-and-other-common-clinical-markers-are-prognostic-factors-in-colorectal-carcinoma-a-retrospective-cohort-study
#13
Sagrario González-Trejo, José F Carrillo, D Darlene Carmona-Herrera, Patricia Baz-Gutiérrez, Roberto Herrera-Goepfert, Gloria Núñez, Francisco J Ochoa-Carrillo, Dolores Gallardo-Rincón, Vincenzo Aiello-Crocifoglio, Luis F Oñate-Ocaña
The aim of the present study was to define the prognostic role of baseline serum albumin (BSA) in colorectal cancer (CRC) across tumor-node-metastasis (TNM) stages and other well defined prognostic factors. Many prognostic models in medicine employ BSA to define or refine treatments in very specific settings; in CRC, BSA has been found to be a prognostic factor as well. A retrospective cohort study of consecutive patients with CRC demonstrated by biopsy, who attended a cancer center during a 7-year period. Multivariate analysis was utilized to define prognostic factors associated with overall survival (OS) employing the Cox model...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28397459/assessment-of-the-link-between-xrcc1-arg399gln-polymorphism-and-breast-cancer-a-meta-analysis-in-a-single-ethnic-group
#14
Xin-Ping Chen, Hai-Feng Wen, Fan Zhang, Wei-Hua Xu, Zhi-Chao Ma, Sheng-Miao Fu
BACKGROUND: Although various individual studies have been conducted to determine the association between X-ray repair cross-complementing group 1 (XRCC1) Arg399Gln polymorphism and breast cancer, the results remain inconclusive. To assess the influence of XRCC1 Arg399Gln polymorphism on the risk of breast cancer, a metaanalysis was performed in a single ethnic group. METHODS: Eligible studies were identified via databases such as PubMed, Springer Link, Ovid, Chinese Wanfang Data Knowledge Service Platform, Chinese National Knowledge Infrastructure, and Chinese Biology Medicine, throughout February 2016...
April 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28335885/policy-and-priorities-for-national-cancer-control-planning-in-low-and-middle-income-countries-lessons-from-the-association-of-southeast-asian-nations-asean-costs-in-oncology-prospective-cohort-study
#15
(no author information available yet)
BACKGROUND: Evidence to guide policymakers in developing affordable and equitable cancer control plans are scarce in low- and middle-income countries (LMIC). METHODS: The 2012-2014 ASEAN Costs in Oncology Study prospectively followed-up 9513 newly diagnosed cancer patients from eight LMIC in Southeast Asia for 12 months. Overall and country-specific incidence of financial catastrophe (out-of-pocket health costs ≥ 30% of annual household income), economic hardship (inability to make necessary household payments), poverty (living below national poverty line), and all-cause mortality were determined...
March 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28324583/revisiting-cdk-inhibitors-for-treatment-of-glioblastoma-multiforme
#16
REVIEW
Dorota Lubanska, Lisa Porter
Despite extensive efforts and continual progress in research and medicine, outcomes for patients with high-grade glioma remain exceptionally poor. Over the past decade, research has revealed a great deal about the complex biology behind glioma development, and has brought to light some of the major barriers preventing successful treatment. Glioblastoma multiforme (GBM) (stage 4 astrocytoma) is a highly dynamic tumour and one of the most extreme examples of intratumoural heterogeneity, making targeting with specific therapeutics an inefficient and highly unpredictable goal...
June 2017: Drugs in R&D
https://www.readbyqxmd.com/read/28297567/developing-a-novel-two-dimensional-culture-system-to-enrich-human-prostate-luminal-progenitors-that-can-function-as-a-cell-of-origin-for-prostate-cancer
#17
Dingxiao Zhang, Kevin Lin, Yue Lu, Kiera Rycaj, Yi Zhong, Hsueh-Ping Chao, Tammy Calhoun-Davis, Jianjun Shen, Dean G Tang
Elucidating the cell of origin of cancer has great significance in stratifying patients into appropriate treatment groups and for developing novel targeted therapies. Early studies demonstrate that only stem-like basal cells in the normal human prostate (NHP) can function as the cell of origin for prostate cancer (PCa). Here, we show that the organoids derived from bulk NHP luminal cells can also be tumorigenically transformed. We further show that the WIT medium, which is used to culture human mammary epithelial progenitor cells, when combined with the ROCK inhibitor, can readily propagate a population of progenitor-like cells from the primary NHP luminal cell isolates...
March 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28270128/the-effect-of-referral-templates-on-out-patient-quality-of-care-in-a-hospital-setting-a-cluster-randomized-controlled-trial
#18
Henrik Wåhlberg, Per Christian Valle, Siri Malm, Øistein Hovde, Ann Ragnhild Broderstad
BACKGROUND: The assessment of quality of care is an integral part of modern medicine. The referral represents the handing over of care from the general practitioner to the specialist. This study aimed to assess whether an improved referral could lead to improved quality of care. METHODS: A cluster randomized trial with the general practitioner surgery as the clustering unit was performed. Fourteen surgeries in the area surrounding the University Hospital of North Norway Harstad were randomized stratified by town versus countryside location...
March 7, 2017: BMC Health Services Research
https://www.readbyqxmd.com/read/28224411/personalized-medicine-for-prevention-can-risk-stratified-screening-decrease-colorectal-cancer-mortality-at-an-acceptable-cost
#19
Sujha Subramanian, Georgiy Bobashev, Robert J Morris, Sonja Hoover
PURPOSE: Tailored health care interventions are expected to transform clinical practice. The objective of this study was to develop an innovative model to assess the effectiveness, cost, and harms of risk stratified colorectal cancer screening. METHODS: We updated a previously validated microsimulation model consisting of three interlinked components: risk assessment, natural history, and screening/treatment modules. We used data from representative national surveys and the literature to create a synthetic population that mimics the family history and genetic profile of the US population...
April 2017: Cancer Causes & Control: CCC
https://www.readbyqxmd.com/read/28218801/do-cancer-survivors-change-their-prescription-drug-use-for-financial-reasons-findings-from-a-nationally-representative-sample-in-the-united-states
#20
Zhiyuan Zheng, Xuesong Han, Gery P Guy, Amy J Davidoff, Chunyu Li, Matthew P Banegas, Donatus U Ekwueme, K Robin Yabroff, Ahmedin Jemal
BACKGROUND: There is limited evidence from nationally representative samples about changes in prescription drug use for financial reasons among cancer survivors in the United States. METHODS: The 2011 to 2014 National Health Interview Survey was used to identify adults who reported ever having been told they had cancer (cancer survivors; n = 8931) and individuals without a cancer history (n = 126,287). Measures of changes in prescription drug use for financial reasons included: 1) skipping medication doses, 2) taking less medicine, 3) delaying filling a prescription, 4) asking a doctor for lower cost medication, 5) buying prescription drugs from another country, and 6) using alternative therapies...
April 15, 2017: Cancer
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