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Stratified medicine in cancer

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https://www.readbyqxmd.com/read/28431457/precision-medicine-and-pharmacogenetics-what-does-oncology-have-that-addiction-medicine-does-not
#1
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
#2
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
#3
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
#4
(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
#5
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...
March 21, 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
#6
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
#7
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
#8
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...
February 21, 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
#9
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...
February 20, 2017: Cancer
https://www.readbyqxmd.com/read/28213330/drug-discovery-strategies-in-the-field-of-tumor-energy-metabolism-limitations-by-metabolic-flexibility-and-metabolic-resistance-to-chemotherapy
#10
REVIEW
N D Amoedo, E Obre, R Rossignol
The search for new drugs capable of blocking the metabolic vulnerabilities of human tumors has now entered the clinical evaluation stage, but several projects already failed in phase I or phase II. In particular, very promising in vitro studies could not be translated in vivo at preclinical stage and beyond. This was the case for most glycolysis inhibitors that demonstrated systemic toxicity. A more recent example is the inhibition of glutamine catabolism in lung adenocarcinoma that failed in vivo despite a strong addiction of several cancer cell lines to glutamine in vitro...
February 16, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28198009/endoscopic-ultrasound-guided-fine-needle-aspirate-derived-preclinical-pancreatic-cancer-models-reveal-panitumumab-sensitivity-in-kras-wild-type-tumors
#11
William Berry, Elizabeth Algar, Beena Kumar, Christopher Desmond, Michael Swan, Brendan J Jenkins, Daniel Croagh
Pancreatic cancer (PC) is largely refractory to existing therapies used in unselected patient trials, thus emphasizing the pressing need for new approaches for patient selection in personalized medicine. KRAS mutations occur in 90% of PC patients and confer resistance to epidermal growth factor receptor (EGFR) inhibitors (e.g., panitumumab), suggesting that KRAS wild-type PC patients may benefit from targeted panitumumab therapy. Here, we use tumor tissue procured by endoscopic ultrasound-guided fine-needle aspirate (EUS-FNA) to compare the in vivo sensitivity in patient-derived xenografts (PDXs) of KRAS wild-type and mutant PC tumors to panitumumab, and to profile the molecular signature of these tumors in patients with metastatic or localized disease...
February 15, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28197806/recruiting-families-at-risk-for-hereditary-breast-and-ovarian-cancer-from-a-statewide-cancer-registry-a-methodological-study
#12
Maria C Katapodi, Deb Duquette, James J Yang, Kari Mendelsohn-Victor, Beth Anderson, Christos Nikolaidis, Emily Mancewicz, Laurel L Northouse, Sonia Duffy, David Ronis, Kara J Milliron, Nicole Probst-Herbst, Sofia D Merajver, Nancy K Janz, Glenn Copeland, Scott Roberts
PURPOSE: Cancer genetic services (counseling/testing) are recommended for women diagnosed with breast cancer younger than 45 years old (young breast cancer survivors-YBCS) and at-risk relatives. We present recruitment of YBCS, identification and recruitment of at-risk relatives, and YBCS willingness to contact their cancer-free, female relatives. METHODS: A random sample of 3,000 YBCS, stratified by race (Black vs. White/Other), was identified through a population-based cancer registry and recruited in a randomized trial designed to increase use of cancer genetic services...
March 2017: Cancer Causes & Control: CCC
https://www.readbyqxmd.com/read/28188189/vascular-invasion-and-metastasis-is-predictive-of-outcome-in-barcelona-clinic-liver-cancer-stage-c-hepatocellular-carcinoma
#13
Ali A Mokdad, Amit G Singal, Jorge A Marrero, Hao Zhu, Adam C Yopp
Background: Patients with Barcelona Clinic Liver Cancer (BCLC) stage C hepatocellular carcinoma (HCC) have variable long-term outcomes. Better delineation of prognosis is important for clinical trial enrollment and clinical practice in an era of precision medicine. We hypothesized that stratification of patients with BCLC stage C HCC by presence of vascular invasion and/or metastasis improves prognostic discrimination. Methods: Using a prospectively maintained database, we identified 234 patients diagnosed with BCLC stage C HCC between 2005 and 2015...
February 2017: Journal of the National Comprehensive Cancer Network: JNCCN
https://www.readbyqxmd.com/read/28164656/glutathione-s-transferase-m1-polymorphism-and-breast-cancer-risk-a-meta-analysis-in-the-chinese-population
#14
Chen-Xin Xue, Xiang-Ming He, De-Hong Zou
BACKGROUND: Published data on the association between present/null polymorphism of glutathione S-transferase M1 (GSTM1) and breast cancer risk are inconclusive. To derive a more precise estimation of the relationship, a meta-analysis in the Chinese population was performed. METHODS: PubMed, Springer Link, Ovid, Chinese Wanfang Data Knowledge Service Platform, Chinese National Knowledge Infrastructure (CNKI), and Chinese Biology Medicine (CBM) were searched. Crude odds ratios (ORs) with 95% confidence intervals (CIs) were used to assess the strength of association between the GSTM1 present/ null polymorphism and breast cancer risk...
November 1, 2016: Clinical Laboratory
https://www.readbyqxmd.com/read/28164573/association-studies-of-cyp1a1-exon7-polymorphism-and-gstm1-interaction-with-esophageal-cancer-risk-a-meta-analysis-in-the-chinese-population
#15
Xin-Ping Chen, Da-Feng Xu, Wei-Hua Xu, Zhi-Chao Ma, Jia Yao, Sheng-Miao Fu
BACKGROUND: Although many epidemiological studies have investigated the CYP1A1 exon7 polymorphism and -GSTM1 interaction with esophageal cancer (EC), definite conclusions cannot be drawn. This study was conducted to explore this association in the Chinese population using meta-analysis. METHODS: Relevant studies were identified from PubMed, Springer Link, Ovid, Chinese Wanfang Data Knowledge Service Platform, Chinese National Knowledge Infrastructure, and Chinese Biology Medicine databases published through August 2015...
September 1, 2016: Clinical Laboratory
https://www.readbyqxmd.com/read/28159136/sexual-and-reproductive-health-in-spanish-university-students-a-comparison-between-medical-and-law-students
#16
Pluvio J Coronado, Carlos Delgado-Miguel, Adriana Rey-Cañas, Miguel A Herráiz
OBJECTIVE: To describe behaviors and knowledge related to sexual and reproductive health of Spanish university students and their association with the subject area studied (biomedical or not). METHODS: A descriptive cross-sectional observational study conducted with 2074 students aged 18-24years from the University Complutense of Madrid in the Faculties of Medicine and Law. Simple random stratified sampling without replacement was performed. A self-administered, anonymous and voluntary questionnaire was distributed...
March 2017: Sexual & Reproductive Healthcare: Official Journal of the Swedish Association of Midwives
https://www.readbyqxmd.com/read/28152848/do-perceived-barriers-to-lung-cancer-screening-differ-between-attending-physicians-and-residents
#17
Laura Jones, Katie Marsh, M Patricia Rivera, Paul Molina, Dan Reuland, J Michael Bowling, Katherine Birchard, Susan Maygarden, Louise Henderson
192 Background: In February 2015, legislation went into effect requiring Medicare to cover lung cancer (LC) screening with low dose computed tomography (LDCT) for high risk patients. Despite this, much debate and uncertainty exist among physicians about LC screening best practices. We aim to compare perceived barriers to LC screening between resident and attending physicians in Family and Internal Medicine, two departments selected for their high likelihood of seeing patients eligible for LC screening. METHODS: Between February and July of 2015, a 23 question Qualtrics survey was conducted among physicians and residents at a large academic hospital to assess knowledge and beliefs of LC screening...
March 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28152743/what-is-needed-to-implement-institute-of-medicine-iom-2013-supportive-oncology-recommendations-in-community-settings
#18
Rosa Berardi, Christine B Weldon
49 Background: The IOM 2013 report recommends supportive oncology services from diagnosis through survivorship and end of life. We examined what community institutions need to implement IOM recommendations. METHODS: Survey of 35 institutions in a urban area (13 cancer centers; 14 cancer support centers, 8 hospices). Institutions ranked the top 5 supportive oncology project ideas, that their organization was most interested in participating in, from a list of 27. RESULTS: Survey response rate was 100%...
March 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28130475/breast-cancer-screening-in-the-precision-medicine-era-risk-based-screening-in-a-population-based-trial
#19
REVIEW
Yiwey Shieh, Martin Eklund, Lisa Madlensky, Sarah D Sawyer, Carlie K Thompson, Allison Stover Fiscalini, Elad Ziv, Laura J Van't Veer, Laura J Esserman, Jeffrey A Tice
Ongoing controversy over the optimal approach to breast cancer screening has led to discordant professional society recommendations, particularly in women age 40 to 49 years. One potential solution is risk-based screening, where decisions around the starting age, stopping age, frequency, and modality of screening are based on individual risk to maximize the early detection of aggressive cancers and minimize the harms of screening through optimal resource utilization. We present a novel approach to risk-based screening that integrates clinical risk factors, breast density, a polygenic risk score representing the cumulative effects of genetic variants, and sequencing for moderate- and high-penetrance germline mutations...
January 2017: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/28075351/circulating-nucleosomes-and-nucleosome-modifications-as-biomarkers-in-cancer
#20
REVIEW
Peter McAnena, James A L Brown, Michael J Kerin
Traditionally the stratification of many cancers involves combining tumour and clinicopathological features (e.g., patient age; tumour size, grade, receptor status and location) to inform treatment options and predict recurrence risk and survival. However, current biomarkers often require invasive excision of the tumour for profiling, do not allow monitoring of the response to treatment and stratify patients into broad heterogeneous groups leading to inconsistent treatment responses. Here we explore and describe the benefits of using circulating biomarkers (nucleosomes and/or modifications to nucleosomes) as a non-invasive method for detecting cancer and monitoring response to treatment...
January 8, 2017: Cancers
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