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Morari C, Beiuşeanu F, Di Marco I, Peters L, Burzo E, Mican S, Chioncel L. Magnetism and electronic structure calculation of SmN. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2015; 27:115503. [PMID: 25738224 DOI: 10.1088/0953-8984/27/11/115503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The results of the electronic structure calculations performed on SmN by using the LDA+U method with and without including the spin-orbit coupling are presented. Within the LDA+U approach, a N(2p) band polarization of about 0.3 μB is induced by Sm(4f)-N(2p) hybridization, and a half-metallic ground state is obtained. By including spin-orbit coupling the magnetic structure was shown to be antiferromagnetic of type II, with Sm spin and orbital moments nearly cancelling. This results into a semiconducting ground state, which is in agreement with experimental results.
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Matthews GV, Neuhaus J, Bhagani S, Mehta SH, Vlahakis E, Doroana M, Naggie S, Arenas-Pinto A, Peters L, Rockstroh JK. Baseline prevalence and predictors of liver fibrosis among HIV-positive individuals: a substudy of the INSIGHT Strategic Timing of AntiRetroviral Treatment (START) trial. HIV Med 2015; 16 Suppl 1:129-36. [DOI: 10.1111/hiv.12241] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/21/2014] [Indexed: 11/30/2022]
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Cosbey S, Kirk S, McNaul M, Peters L, Prentice B, Quinn A, Elliott SP, Brandt SD, Archer RP. Multiple fatalities involving a new designer drug: para-methyl-4-methylaminorex. J Anal Toxicol 2014; 38:383-4. [PMID: 24830294 DOI: 10.1093/jat/bku031] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Peters L, Mocroft A, Soriano V, Rockstroh JK, Kirkby N, Reiss P, Katlama C, Zakharova N, Flisiak R, Lundgren JD. High rate of hepatitis C virus (HCV) recurrence in HIV-infected individuals with spontaneous HCV RNA clearance. HIV Med 2014; 15:615-20. [PMID: 24814468 DOI: 10.1111/hiv.12160] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/23/2014] [Indexed: 11/29/2022]
Abstract
OBJECTIVES Following resolution of hepatitis C virus (HCV) infection, recurrence has been shown to occur in some persons with repeated exposure to HCV. We aimed to investigate the rate and factors associated with HCV RNA recurrence among HIV-1-infected patients with prior spontaneous HCV RNA clearance in the EuroSIDA cohort. METHODS All HIV-infected patients with documented prior spontaneous HCV clearance, and at least one subsequently collected plasma sample, were examined. The last sample was tested for HCV RNA and those with HCV RNA ≥ 615 IU/mL were defined as having HCV recurrence and their characteristics were compared with those of patients who were still aviraemic. Logistic regression was used to identify factors associated with HCV recurrence. RESULTS Of 191 eligible patients, 35 [18.3%; 95% confidence interval (CI) 12.8-23.8%] had HCV recurrence. Thirty-three (94.3%) were injecting drug users (IDUs). The median time between the first and last samples was 3.6 years (interquartile range 2.0-5.8 years). After adjustment, those on combination antiretroviral therapy [odds ratio (OR) 0.44; 95% CI 0.20-0.99; P = 0.046] and older persons (OR 0.51 per 10 years older; 95% CI 0.28-0.95; P = 0.033) were less likely to have HCV RNA recurrence, whereas IDUs were over 6 times more likely to have HCV RNA recurrence compared with non-IDUs (OR 6.58; 95% CI 1.48-29.28; P = 0.013). CONCLUSIONS Around 1 in 5 HIV-infected patients with prior spontaneous HCV RNA clearance had detectable HCV RNA during follow-up. Our findings underline the importance of maintaining focus on preventive measures to reduce IDU and sharing of contaminated needles. Clinicians should maintain a high degree of vigilance to identify patients with new HCV infection early.
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Lee Litwin M, Peters L, Schmidt J, Stiles M. Correlation between Motivational Factors, Psychological Barriers, and Body Mass Index (BMI) among ETSU College Students. J Acad Nutr Diet 2013. [DOI: 10.1016/j.jand.2013.06.063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Grint D, Peters L, Schwarze-Zander C, Beniowski M, Pradier C, Battegay M, Jevtovic D, Soriano V, Lundgren JD, Rockstroh JK, Kirk O, Mocroft A. Temporal changes and regional differences in treatment uptake of hepatitis C therapy in EuroSIDA. HIV Med 2013; 14:614-23. [PMID: 23869664 PMCID: PMC4030620 DOI: 10.1111/hiv.12068] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/21/2013] [Indexed: 12/14/2022]
Abstract
OBJECTIVES All HIV/hepatitis C virus (HCV)-coinfected patients with chronic HCV infection and ≥ F2 fibrosis should be considered for HCV therapy. This study aimed to determine the rate of HCV treatment uptake among coinfected patients in Europe. METHODS EuroSIDA patients with viraemic HCV infection were included in the study. Poisson regression was used to identify temporal changes and regional differences in HCV treatment uptake. RESULTS A total of 1984 patients were included in the study, with a median follow-up time of 168 months [interquartile range (IQR) 121-204 months]. To date, 501 (25.3%) HIV/HCV-coinfected patients have received HCV therapy. Treatment incidence rose from 0.33 [95% confidence interval (CI) 0.16-0.50] per 100 person-years of follow-up (PYFU) in 1998 to 5.93 (95% CI 4.49-7.38) in 2007, falling to 3.78 (95% CI 2.50-5.07) in 2009. After adjustment, CD4 cell count > 350 cells/μL [incidence rate ratio (IRR) 1.33 (95% CI 1.06-1.67) vs. CD4 count 200-350 cells/μL] and ≥F2 liver fibrosis [IRR 1.60 (95% CI 1.14-2.25; P = 0.0065) vs. < F2 fibrosis] were predictors of anti-HCV treatment initiation. However, 22% of patients who remain untreated for HCV, with fibrosis data available, had ≥F2 fibrosis and should have been considered for treatment, while only 36% of treated patients had ≥F2 fibrosis. CONCLUSIONS Although treatment incidence for HCV has increased, there remain a large proportion of patients indicated for treatment who have yet to be treated.
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Bergner R, Peters L, Schmitt V, Sattler H, Löffler C. SAT0382 Arthrosonographic Findings in Crystal Arthropathies. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.2107] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Grint D, Peters L, Reekie J, Soriano V, Kirk O, Knysz B, Suetnov O, Lazzarin A, Ledergerber B, Rockstroh JK, Mocroft A. Stability of hepatitis C virus (HCV) RNA levels among interferon-naïve HIV/HCV-coinfected individuals treated with combination antiretroviral therapy. HIV Med 2013; 14:370-8. [PMID: 23534815 DOI: 10.1111/hiv.12033] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/11/2013] [Indexed: 12/12/2022]
Abstract
OBJECTIVES Infection with hepatitis C virus (HCV) is a major cause of chronic liver disease. High HCV RNA levels have been associated with poor treatment response. This study aimed to examine the natural history of HCV RNA in chronically HCV/HIV-coinfected individuals. METHODS Mixed models were used to analyse the natural history of HCV RNA changes over time in HIV-positive patients with chronic HCV infection. RESULTS A total of 1541 individuals, predominantly White (91%), male (73%), from southern (35%) and western central Europe (23%) and with HCV genotype 1 (58%), were included in the analysis. The median follow-up time was 5.0 years [interquartile range (IQR) 2.8 to 8.3 years]. Among patients not on combination antiretroviral therapy (cART), HCV RNA levels increased by a mean 27.6% per year [95% confidence interval (CI) 6.1-53.5%; P = 0.0098]. Among patients receiving cART, HCV RNA levels were stable, increasing by a mean 2.6% per year (95% CI -1.1 to 6.5%; P = 0.17). Baseline HCV RNA levels were 25.5% higher (95% CI 8.8 to 39.1%; P = 0.0044) in individuals with HCV genotype 1 compared with HCV genotypes 2, 3 and 4. A 1 log HIV-1 RNA copies/mL increase in HIV RNA was associated with a 10.9% increase (95% CI 2.3 to 20.2%; P = 0.012) in HCV RNA. CONCLUSIONS While HCV RNA levels increased significantly in patients prior to receiving cART, among those treated with cART HCV RNA levels remained stable over time.
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Peters L, Cant R, Payne S, O'Connor M, McDermott F, Hood K, Morphet J, Shimoinaba K. How death anxiety impacts nurses' caring for patients at the end of life: a review of literature. Open Nurs J 2013; 7:14-21. [PMID: 23400515 PMCID: PMC3565229 DOI: 10.2174/1874434601307010014] [Citation(s) in RCA: 181] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Revised: 11/26/2012] [Accepted: 11/27/2012] [Indexed: 11/30/2022] Open
Abstract
Nurses are frequently exposed to dying patients and death in the course of their work. This experience makes individuals conscious of their own mortality, often giving rise to anxiety and unease. Nurses who have a strong anxiety about death may be less comfortable providing nursing care for patients at the end of their life. This paper explores the literature on death anxiety and nurses’ attitudes to determine whether fear of death impacts on nurses’ caring for dying patients. Fifteen quantitative studies published between 1990 and 2012 exploring nurses’ own attitudes towards death were critically reviewed. Three key themes identified were: i). nurses’ level of death anxiety; ii). death anxiety and attitudes towards caring for the dying, and iii). death education was necessary for such emotional work. Based on quantitative surveys using valid instruments, results suggested that the level of death anxiety of nurses working in hospitals in general, oncology, renal, hospice care or in community services was not high. Some studies showed an inverse association between nurses’ attitude towards death and their attitude towards caring for dying patients. Younger nurses consistently reported stronger fear of death and more negative attitudes towards end-of-life patient care. Nurses need to be aware of their own beliefs. Studies from several countries showed that a worksite death education program could reduce death anxiety. This offers potential for improving nurses’ caring for patients at the end of their life.
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Conradi L, Schmidt S, Peters L, Eder A, Hansen A, Hua X, Reichenspurner H, Robbins RC, Deuse T, Eschenhagen T, Schrepfer S. What is the immunologic impact after transplantation of a novel fibrin-based type of engineered heart tissue? Thorac Cardiovasc Surg 2013. [DOI: 10.1055/s-0032-1332453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Knott P, Smith K, Mack L, Peters L, Patel N, Thompson S, Mardjetko S. A comparison of static vs dynamic surface topography measurements in the evaluation of scoliosis. SCOLIOSIS 2012. [PMCID: PMC3304844 DOI: 10.1186/1748-7161-7-s1-p12] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Lingford-Hughes AR, Welch S, Peters L, Nutt DJ. BAP updated guidelines: evidence-based guidelines for the pharmacological management of substance abuse, harmful use, addiction and comorbidity: recommendations from BAP. J Psychopharmacol 2012; 26:899-952. [PMID: 22628390 DOI: 10.1177/0269881112444324] [Citation(s) in RCA: 154] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The British Association for Psychopharmacology guidelines for the treatment of substance abuse, harmful use, addiction and comorbidity with psychiatric disorders primarily focus on their pharmacological management. They are based explicitly on the available evidence and presented as recommendations to aid clinical decision making for practitioners alongside a detailed review of the evidence. A consensus meeting, involving experts in the treatment of these disorders, reviewed key areas and considered the strength of the evidence and clinical implications. The guidelines were drawn up after feedback from participants. The guidelines primarily cover the pharmacological management of withdrawal, short- and long-term substitution, maintenance of abstinence and prevention of complications, where appropriate, for substance abuse or harmful use or addiction as well management in pregnancy, comorbidity with psychiatric disorders and in younger and older people.
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Winter PM, Morel-Kopp MC, Peters L, Hutchinson A, Morris J, Ashton A, Warning J. Platelets and innate inflammation in pregnancy. J Reprod Immunol 2012. [DOI: 10.1016/j.jri.2012.03.405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Schmidt S, Conradi L, Hua X, Peters L, Deuse T, Hansen A, Eder A, Reichenspurner H, Robbins R, Eschenhagen T, Schrepfer S. 632 Clinical Aspects in Regenerative Medicine: Immunobiology of Engineered Heart Tissue. J Heart Lung Transplant 2012. [DOI: 10.1016/j.healun.2012.01.646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Huong DTM, Bannister W, Phong PT, Kirk O, Peters L. Factors associated with HIV-1 virological failure in an outpatient clinic for HIV-infected people in Haiphong, Vietnam. Int J STD AIDS 2012; 22:659-64. [PMID: 22096052 DOI: 10.1258/ijsa.2011.010515] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The objective of our study was to investigate factors associated with virological failure in 100 consecutive HIV-1 infected Vietnamese adults who initiated antiretroviral therapy (ART) from June 2007 to June 2008. Data were collected from medical records, and a structured questionnaire was used in individual interviews to investigate factors associated with adherence to ART. Plasma HIV viral load was measured at the time of the interview. The median age was 35 years, 35% were women and heterosexual intercourse was the most common mode of HIV transmission (61%). After a median of 14 months since starting ART, 23% had detectable HIV-1 viral load (≥ 400 copies/mL). Patients who had developed a World Health Organization (WHO) clinical stage 4 condition at the time of initiation of ART were more likely to experience virological failure than those in stages 1-3, odds ratio (OR): 5.20 (95% confidence interval [CI] 1.34-20.11), P = 0.017. Patients who reported that their health status was evaluated by a physician at each visit were less likely to experience virological failure, OR: 0.02 (95% CI 0.00-0.24), P = 0.002.
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Savage E, Leong G, Peters L, Duffell S, Hughes G. P1-S5.46 Assessing the relationship between sexually transmitted infection rates, ethnic group and socio-economic deprivation in England. Sex Transm Infect 2011. [DOI: 10.1136/sextrans-2011-050108.224] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Razavi A, Peters L, Nafpliotis L, Vereecke D, Dauw KD, Atwood JL, Thewald U. The geometry of the site and its relevance for chain migration and stereospecificity. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/masy.19950890133] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Conradi L, Schmidt S, Peters L, Deuse T, Hansen A, Eder A, Vogelsang A, Reichenspurner H, Robbins RC, Eschenhagen T, Schrepfer S. Assessment of immunobiology of engineered heart tissue using bioluminescence imaging. Thorac Cardiovasc Surg 2011. [DOI: 10.1055/s-0030-1269394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Warning J, Yenson V, Nguyen T, Peters L, Ashton A, McCracken S, Morris J. Immunoglobulin-D and the innate inflammatory response in preeclampsia. J Reprod Immunol 2010. [DOI: 10.1016/j.jri.2010.06.138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Beyer KH, Woodward R, Peters L, Verwey WF, Mattis PA. THE PROLONGATION OF PENICILLIN RETENTION IN THE BODY BY MEANS OF PARA-AMINOHIPPURIC ACID. Science 2010; 100:107-8. [PMID: 17788931 DOI: 10.1126/science.100.2588.107] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Shannon J, Lieberman S, Maxcy C, Thuillier P, Peters L, Garzotto M. Fish oil, green tea, and prostate cancer prevention. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.tps140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Soriano V, Mocroft A, Peters L, Rockstroh J, Antunes F, Kirkby N, de Wit S, Monforte AD, Flisiak R, Lundgren J. Predictors of hepatitis B virus genotype and viraemia in HIV-infected patients with chronic hepatitis B in Europe. J Antimicrob Chemother 2010; 65:548-555. [DOI: 10.1093/jac/dkp479] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
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Rischin D, Young R, Fisher R, Fox S, Le Q, Peters L, Choi J, O'Sullivan B, Giralt J, McArthur G. Prognostic significance of HPV and p16 status in patients with oropharyngeal cancer treated on a large international phase III trial. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.6004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
6004 Background: Previous studies have reported that in patients with oropharyngeal cancer (OPC) the presence of human papilloma virus (HPV) is associated with an improved prognosis. We sought to determine the prognostic importance of HPV and p16 in patients with OPC treated with concurrent chemoradiation on a large international phase III trial. Methods: Patients with previously untreated Stage III or IV head and neck squamous cell cancer were randomized to receive definitive radiotherapy concurrently with either cisplatin or cisplatin plus tirapazamine. In this substudy, analyses were restricted to patients with OPC who received > 60 Gy and did not have major radiation deviations predicted to impact on tumor control. HPV 16/18 were detected by in situ hybridization and scored as detected or undetected. p16 was detected by immunohistochemistry. Nuclear and cytoplasmic staining intensity of tumor cells was scored as grade 0–3, with grade 2 and 3 called positive. Log rank and Cox regression used for survival analyses. p values were 2-sided . Results: 384 out of 861 patients had OPC and met the eligibility criteria. Slides were available for HPV assay in 195 and for p16 in 186, and for both in 173. 54/195 (28%) were HPV positive, 107/186 (58%) were p16 positive. HPV pos tumors were associated with better 2-year overall survival (OS) (94 v 77%, p = 0.007) and better failure-free survival (FFS) (86 v 75%, p = 0.035) compared to HPV neg tumors. Similarly p16 pos tumors were associated with better 2-year OS (92 v 75%, p = 0.004) and FFS (87 v 72%, p = 0.003) compared to p16 neg . After adjustment for stage, Hb and ECOG PS, HPV pos had better OS than HPV neg (HR 0.29, p = 0.018), and p16 pos had better OS than p16 neg (HR 0.39, p = 0.013). When the HPV and p16 results were combined the relative HRs for OS were: HPVpos/p16pos 0.35 (45 patients, 26% of cases), HPVpos/p16neg 0 (3pts, 2%), HPVneg/p16pos 0.73 (58pts, 33%), HPVneg/p16neg 1.79 (67 pts, 39%). Conclusions: Our results confirm the prognostic significance of tumor HPV status in oropharyngeal cancer treated with chemoradiation, but also show that p16 identifies a larger group with an improved prognosis. The HPV neg/p16 pos population has a better prognosis compared to patients with HPV neg/p16 neg tumors. No significant financial relationships to disclose.
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Peters L, Stevens CB, Budding J, Burdett BC, Sykes JAW. The Effect of Solvents in Wool Dyeing. ACTA ACUST UNITED AC 2008. [DOI: 10.1111/j.1478-4408.1960.tb02396.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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