يعرض 101 - 110 نتائج من 1,711 نتيجة بحث عن '"E, Brian"', وقت الاستعلام: 1.41s تنقيح النتائج
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    مصطلحات موضوعية: chemical and pharmacologic phenomena

    الوصف: Background and PurposeIn stroke, timely treatment is vital for preserving neurologic function. However, decision-making in neurocritical care is hindered by limited accessibility of neuroimaging and radiological interpretation. We evaluated an artificial intelligence (AI) system for use in conjunction with bedside portable point-of-care (POC)-MRI to automatically measure midline shift (MLS), a quantitative biomarker of stroke severity.Materials and MethodsPOC-MRI (0.064 T) was acquired in a patient cohort (n=94) in the Neurosciences Intensive Care Unit (NICU) of an academic medical center in the follow-up window during treatment for ischemic stroke (IS) and hemorrhagic stroke (HS). A deep-learning architecture was applied to produce AI estimates of midline shift (MLS-AI). Neuroradiologist annotations for MLS were compared to MLS-AI using non-inferiority testing. Regression analysis was used to evaluate associations between MLS-AI and stroke severity (NIHSS) and functional disability (mRS) at imaging time and discharge, and the predictive value of MLS-AI versus clinical outcome was evaluated.ResultsMLS-AI was non-inferior to neuroradiologist estimates of MLS (p1.5 mm was positively predictive of poor discharge outcome in all patients (PPV=70%) and specifically in patients with IS (PPV=77%).ConclusionThe integration of portable POC-MRI and AI provides automatic MLS measurements that were not inferior to time-consuming, manual measurements from expert neuroradiologists, potentially reducing neuroradiological burden for follow-up imaging in acute stroke.

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    مصطلحات موضوعية: neoplasms

    الوصف: BackgroundMGMT promoter methylation has been associated with favorable prognosis and survival outcomes in patients with glioblastoma and grade 3 glioma. However, the effects of promoter methylation of MGMT in patients with grade 2 gliomas have not been established. The purpose of the current study is to evaluate the prognostic impact and predictive values of MGMT methylation in patients with grade 2 glioma.MethodsThe National Cancer Database (NCDB) was queried (2004-2016) for patients with newly diagnosed grade 2 glioma. Demographics and clinical characteristics of these patients were examined. Statistics included Kaplan-Meier overall survival (OS) analysis alongside Cox proportional hazards modeling.ResultsA total of 11,223 patients met the selection criteria; 1,252 patients (11%) had MGMT testing. Of the patients who had MGMT testing, 58.5% were MGMT methylated (mMGMT), and 43.5% were MGMT unmethylated (uMGMT). mMGMT patients had greater median overall survival (77.3 months) than both uMGMT patients (42.6 months) and patients with no MGMT status reported (61.9 months (p

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    المصدر: Journal of neuro-oncology. 157(1)

    الوصف: MGMT promoter methylation has been associated with favorable prognosis and survival outcomes in patients with glioblastoma and WHO grade III glioma. However, the effects of promoter methylation of MGMT in patients with WHO grade II gliomas have not been established. The purpose of the current study is to evaluate the prognostic impact and predictive values of MGMT methylation in patients with grade II glioma.The National Cancer Database (NCDB) was queried (2004-2016) for patients with newly diagnosed grade II glioma. Demographics and clinical characteristics of these patients were examined. Statistics included Kaplan-Meier overall survival (OS) analysis alongside Cox proportional hazards modeling.A total of 11,223 patients met the selection criteria; 1252 patients (11%) had MGMT testing. Of the patients who had MGMT testing, 58.5% were MGMT methylated (mMGMT), and 43.5% were MGMT unmethylated (uMGMT). mMGMT patients had greater median overall survival (77.3 months) than both uMGMT patients (42.6 months) and patients with no MGMT status reported (61.9 months (p 0.001 for both). mMGMT was also associated with improved OS, when compared to patients with uMGMT, for patients receiving adjuvant chemoradiation or adjuvant radiation therapy.This is the largest study to date demonstrating both the prognostic and predictive impact of MGMT methylation on patients with grade II glioma. The current results show that mMGMT is a prognostic factor and possibly a predictive biomarker for grade II glioma patients. MGMT methylation status can be used to determine and stratify patients by risk levels, and thus select patients for treatment intensification.The present study is the largest to date examining the prognostic and predictive significance of MGMT methylation (mMGMT) in patients with WHO grade II glioma. The results suggest that mMGMT is prognostic with increasing overall survival rates for patients with mMGMT compared to uMGMT patients. The results also suggest that mMGMT is predictive as shown by improved overall survival in patients receiving gross total resection, adjuvant chemoradiation or adjuvant radiation therapy, but no difference was observed in patients receiving adjuvant chemotherapy or no adjuvant treatment.

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    المصدر: Acta oncologica (Stockholm, Sweden). 61(4)

    الوصف: It is essential to evaluate the risk of occult lymph node (LN) disease in early-stage non-small cell lung cancer (NSCLC), especially because delivering stereotactic ablative radiotherapy (SABR) assumes no occult spread. This study was designed to assist clinicians in roughly quantifying this risk for cN0 NSCLC.The National Cancer Data Base was queried for cN0 cM0 lung squamous cell or adenocarcinoma who underwent surgery and LN dissection without neoadjuvant therapy. Statistics included multivariable logistic regression to evaluate factors associated with pN + disease.109,964 patients were included. For tumors with size ≤1.0, 1.1-2.0, 2.1-3.0, 3.1-4.0, 4.1-5.0, 5.1-6.0, 6.1-7.0, and7.0 cm, the pN + rate was 4.4, 7.7, 12.9, 18.0, 20.2, 22.5, 24.4, and 26.4%, respectively. When examining patients with more complete LN dissections (defined as removal of at least 10 LNs), the respective values were 6.6, 11.5, 17.6, 25.3, 26.8, 29.7, 30.7, and 31.6%. Moderately-poorly differentiated disease and adenocarcinomas were associated with a higher rate of pN + disease (This nationwide study can allow clinicians to roughly estimate the rate of occult LN disease in cN0 NSCLC. These data can also assist in guiding enrollment on randomized trials of SABR ± immunotherapy, individualizing follow-up imaging surveillance, and patient counseling to avoid post-diagnosis delays.

  7. 107

    المصدر: Journal of contemporary brachytherapy. 14(2)

    مصطلحات موضوعية: Oncology, Radiology, Nuclear Medicine and imaging

    الوصف: In the management of uveal melanoma, eye plaque brachytherapy (EPBT) has replaced enucleation as the standard of care for small size tumors that require treatment, and for medium size tumors. In the modern era, EPBT is being utilized more frequently for certain large tumors as well. While there is prospective randomized evidence to support utilization of EPBT for tumors of appropriate dimensions, it is unclear what the actual practice patterns are across the United States. The purpose of this publication was to look at contemporary trends in the management of uveal melanoma across the United States to determine whether practices are appropriately adopting EPBT, and to investigate demographic and socio-economic factors that might be associated with deviations from this standard of care.The National Cancer Database was queried (2004-2015) for patients with uveal melanoma. Data regarding tumor characteristics and treatment were collected. Two-sided Pearson χThe enucleation rate for small/medium tumors (≤ 10 mm apical height and ≤ 16 mm basal diameter) decreased from 20% in 2004 to 10% in 2015. The EPBT rate for large tumors increased from 30% in 2004 to 45% in 2015. Numerous demographic and socio-economic factors were found to be associated with higher rates of enucleation.The overall trend across the nation is a decreased enucleation rate for small/medium tumors, and an increased EPBT rate for large tumors. A fraction of patients who should be candidates for EPBT are instead receiving enucleation, and in this study, we have shown that certain adverse demographic factors are associated with this.

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    المصدر: Advances in Radiation Oncology, Vol 6, Iss 6, Pp 100783-(2021)
    Advances in Radiation Oncology

    الوصف: Purpose: Patients with small cell lung cancer (SCLC) who have brain metastases require whole-brain radiation therapy (WBRT). When there is no emergent indication for WBRT, patients may receive systemic therapy first and WBRT afterward. In scenarios when systemic therapy is initiated first, it has not been previously investigated whether delaying WBRT is harmful. Methods and Materials: The National Cancer Database was queried (2004-2016) for patients with SCLC with brain metastases who received 30 Gy in 10 fractions of WBRT. Patients were divided into groups based on whether they received early WBRT (3-14 days after initiation of chemotherapy) or late WBRT (15-90 days after initiation of chemotherapy). Demographic and clinicopathologic categorical variables were compared between those who had early WBRT (3-14 days) and those who had late WBRT (15-90 days). Factors predictive for late WBRT were determined. Overall survival (OS), which was defined as days from diagnosis to death, was evaluated and variables prognostic for OS were determined. Results: A total of 1082 patients met selection criteria; 587 (54%) had early WBRT and 495 (46%) received late WBRT. Groups were similarly distributed aside from days from initiating chemotherapy to initiating WBRT (P < .001). The early WBRT group had a median of 7 days (interquartile range [IQR], 5-10 days) from initiating chemotherapy to initiating WBRT and the late WBRT group had a median of 34 days (IQR, 21-57 days). On binary logistic regression analysis, a longer time interval between diagnosis and the start of systemic therapy was predictive for later WBRT. Median OS was 8.7 months for early WBRT and 7.5 months for late WBRT (hazard ratio [HR], 1.165; P = .008). Early WBRT (P = .02), female sex (P = .045), and private insurance (P = .04) were favorable prognostic factors for OS on multivariable analysis, whereas older age (P = .006) was an unfavorable prognostic factor. Conclusions: Patients with SCLC and brain metastases who received early WBRT were found to have a modest improvement in OS compared with patients who received late WBRT. These findings suggest that early WBRT should be offered to patients who have brain metastases, even in the absence of an indication for emergent WBRT.

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    دورية أكاديمية

    المؤلفون: Southey, M. C. (Melissa C.), Goldgar, D. E. (David E.), Winqvist, R. (Robert), Pylkäs, K. (Katri), Couch, F. (Fergus), Tischkowitz, M. (Marc), Foulkes, W. D. (William D.), Dennis, J. (Joe), Michailidou, K. (Kyriaki), van Rensburg, E. J. (Elizabeth J.), Heikkinen, T. (Tuomas), Nevanlinna, H. (Heli), Hopper, J. L. (John L.), Doerk, T. (Thilo), Claes, K. B. (Kathleen B. M.), Reis-Filho, J. (Jorge), Teo, Z. L. (Zhi Ling), Radice, P. (Paolo), Catucci, I. (Irene), Peterlongo, P. (Paolo), Tsimiklis, H. (Helen), Odefrey, F. A. (Fabrice A.), Dowty, J. G. (James G.), Schmidt, M. K. (Marjanka K.), Broeks, A. (Annegien), Hogervorst, F. B. (Frans B.), Verhoef, S. (Senno), Carpenter, J. (Jane), Clarke, C. (Christine), Scott, R. J. (Rodney J.), Fasching, P. A. (Peter A.), Haeberle, L. (Lothar), Ekici, A. B. (Arif B.), Beckmann, M. W. (Matthias W.), Peto, J. (Julian), dos-Santos-Silva, I. (Isabel), Fletcher, O. (Olivia), Johnson, N. (Nichola), Bolla, M. K. (Manjeet K.), Sawyer, E. J. (Elinor J.), Tomlinson, I. (Ian), Kerin, M. J. (Michael J.), Miller, N. (Nicola), Marme, F. (Federik), Burwinkel, B. (Barbara), Yang, R. (Rongxi), Guenel, P. (Pascal), (), Menegaux, F. (Florence), Sanchez, M. (Marie), Bojesen, S. (Stig), Nielsen, S. F. (Sune F.), Flyger, H. (Henrik), Benitez, J. (Javier), Pilar Zamora, M. (M.), Arias Perez, J. I. (Jose Ignacio), Menendez, P. (Primitiva), Anton-Culver, H. (Hoda), Neuhausen, S. (Susan), Ziogas, A. (Argyrios), Clarke, C. A. (Christina A.), Brenner, H. (Hermann), Arndt, V. (Volker), Stegmaier, C. (Christa), Brauch, H. (Hiltrud), Bruening, T. (Thomas), Ko, Y.-D. (Yon-Dschun), Muranen, T. A. (Taru A.), Aittomaki, K. (Kristiina), Blomqvist, C. (Carl), Bogdanova, N. V. (Natalia V.), Antonenkova, N. N. (Natalia N.), Lindblom, A. (Annika), Margolin, S. (Sara), Mannermaa, A. (Arto), Kataja, V. (Vesa), Kosma, V.-M. (Veli-Matti), Hartikainen, J. M. (Jaana M.), Spurdle, A. B. (Amanda B.), Wauters, E. (Els), Smeets, D. (Dominiek), Beuselinck, B. (Benoit), Floris, G. (Giuseppe), Chang-Claude, J. (Jenny), Rudolph, A. (Anja), Seibold, P. (Petra), Flesch-Janys, D. (Dieter), Olson, J. E. (Janet E.), Vachon, C. (Celine), Pankratz, V. S. (Vernon S.), McLean, C. (Catriona), Haiman, C. A. (Christopher A.), Henderson, B. E. (Brian E.), Schumacher, F. (Fredrick), Le Marchand, L. (Loic), Kristensen, V. (Vessela), Alnaes, G. G. (Grethe Grenaker), Zheng, W. (Wei), Hunter, D. J. (David J.), Lindstrom, S. (Sara), Hankinson, S. E. (Susan E.), Kraft, P. (Peter), Andrulis, I. (Irene), Knight, J. A. (Julia A.), Glendon, G. (Gord), Mulligan, A. M. (Anna Marie), Jukkola-Vuorinen, A. (Arja), Grip, M. (Mervi), Kauppila, S. (Saila), Devilee, P. (Peter), Tollenaar, R. A. (Robert A. E. M.), Seynaeve, C. (Caroline), Hollestelle, A. (Antoinette), Garcia-Closas, M. (Montserrat), Figueroa, J. (Jonine), Chanock, S. J. (Stephen J.), Lissowska, J. (Jolanta), Czene, K. (Kamila), Darabi, H. (Hatef), Eriksson, M. (Mikael), Eccles, D. M. (Diana M.), Rafiq, S. (Sajjad), Tapper, W. J. (William J.), Gerty, S. M. (Sue M.), Hooning, M. J. (Maartje J.), Martens, J. W. (John W. M.), Collee, J. M. (J. Margriet), Tilanus-Linthorst, M. (Madeleine), Hall, P. (Per), Li, J. (Jingmei), Brand, J. S. (Judith S.), Humphreys, K. (Keith), Cox, A. (Angela), Reed, M. W. (Malcolm W. R.), Luccarini, C. (Craig), Baynes, C. (Caroline), Dunning, A. M. (Alison M.), Hamann, U. (Ute), Torres, D. (Diana), Ulmer, H. U. (Hans Ulrich), Ruediger, T. (Thomas), Jakubowska, A. (Anna), Lubinski, J. (Jan), Jaworska, K. (Katarzyna), Durda, K. (Katarzyna), Slager, S. (Susan), Toland, A. E. (Amanda E.), Ambrosone, C. B. (Christine B.), Yannoukakos, D. (Drakoulis), Swerdlow, A. (Anthony), Ashworth, A. (Alan), Orr, N. (Nick), Jones, M. (Michael), Gonzalez-Neira, A. (Anna), Pita, G. (Guillermo), Rosario Alonso, M. (M.), Alvarez, N. (Nuria), Herrero, D. (Daniel), Tessier, D. C. (Daniel C.), Vincent, D. (Daniel), Bacot, F. (Francois), Simard, J. (Jacques), Dumont, M. (Martine), Soucy, P. (Penny), Eeles, R. (Rosalind), Muir, K. (Kenneth), Wiklund, F. (Fredrik), Gronberg, H. (Henrik), Schleutker, J. (Johanna), Nordestgaard, B. G. (Borge G.), Weischer, M. (Maren), Travis, R. C. (Ruth C.), Neal, D. (David), Donovan, J. L. (Jenny L.), Hamdy, F. C. (Freddie C.), Khaw, K.-T. (Kay-Tee), Stanford, J. L. (Janet L.), Blot, W. J. (William J.), Thibodeau, S. (Stephen), Schaid, D. J. (Daniel J.), Kelley, J. L. (Joseph L.), Maier, C. (Christiane), Kibel, A. S. (Adam S.), Cybulski, C. (Cezary), Cannon-Albright, L. (Lisa), Butterbach, K. (Katja), Park, J. (Jong), Kaneva, R. (Radka), Batra, J. (Jyotsna), Teixeira, M. R. (Manuel R.), Kote-Jarai, Z. (Zsofia), Al Olama, A. A. (Ali Amin), Benlloch, S. (Sara), Renner, S. P. (Stefan P.), Hartmann, A. (Arndt), Hein, A. (Alexander), Ruebner, M. (Matthias), Lambrechts, D. (Diether), Van Nieuwenhuysen, E. (Els), Vergote, I. (Ignace), Lambretchs, S. (Sandrina), Doherty, J. A. (Jennifer A.), Rossing, M. A. (Mary Anne), Nickels, S. (Stefan), Eilber, U. (Ursula), Wang-Gohrke, S. (Shan), Odunsi, K. (Kunle), Sucheston-Campbell, L. E. (Lara E.), Friel, G. (Grace), Lurie, G. (Galina), Killeen, J. L. (Jeffrey L.), Wilkens, L. R. (Lynne R.), Goodman, M. T. (Marc T.), Runnebaum, I. (Ingo), Hillemanns, P. A. (Peter A.), Pelttari, L. M. (Liisa M.), Butzow, R. (Ralf), Modugno, F. (Francesmary), Edwards, R. P. (Robert P.), Ness, R. B. (Roberta B.), Moysich, K. B. (Kirsten B.), du Bois, A. (Andreas), Heitz, F. (Florian), Harter, P. (Philipp), Kommoss, S. (Stefan), Karlan, B. Y. (Beth Y.), Walsh, C. (Christine), Lester, J. (Jenny), Jensen, A. (Allan), Kjaer, S. K. (Susanne Kruger), Hogdall, E. (Estrid), Peissel, B. (Bernard), Bonanni, B. (Bernardo), Bernard, L. (Loris), Goode, E. L. (Ellen L.), Fridley, B. L. (Brooke L.), Vierkant, R. A. (Robert A.), Cunningham, J. M. (Julie M.), Larson, M. C. (Melissa C.), Fogarty, Z. C. (Zachary C.), Kalli, K. R. (Kimberly R.), Liang, D. (Dong), Lu, K. H. (Karen H.), Hildebrandt, M. A. (Michelle A. T.), Wu, X. (Xifeng), Levine, D. A. (Douglas A.), Dao, F. (Fanny), Bisogna, M. (Maria), Berchuck, A. (Andrew), Iversen, E. S. (Edwin S.), Marks, J. R. (Jeffrey R.), Akushevich, L. (Lucy), Cramer, D. W. (Daniel W.), Schildkraut, J. (Joellen), Terry, K. L. (Kathryn L.), Poole, E. M. (Elizabeth M.), Stampfer, M. (Meir), Tworoger, S. S. (Shelley S.), Bandera, E. V. (Elisa V.), Orlow, I. (Irene), Olson, S. H. (Sara H.), Bjorge, L. (Line), Salvesen, H. B. (Helga B.), van Altena, A. M. (Anne M.), Aben, K. K. (Katja K. H.), Kiemeney, L. A. (Lambertus A.), Massuger, L. F. (Leon F. A. G.), Pejovic, T. (Tanja), Bean, Y. (Yukie), Brooks-Wilson, A. (Angela), Kelemen, L. E. (Linda E.), Cook, L. S. (Linda S.), Le, N. D. (Nhu D.), Grski, B. (Bohdan), Gronwald, J. (Jacek), Menkiszak, J. (Janusz), Hogdall, C. K. (Claus K.), Lundvall, L. (Lene), Nedergaard, L. (Lotte), Engelholm, S. A. (Svend Aage), Dicks, E. (Ed), Tyrer, J. (Jonathan), Campbell, I. (Ian), McNeish, I. (Iain), Paul, J. (James), Siddiqui, N. (Nadeem), Glasspool, R. (Rosalind), Whittemore, A. S. (Alice S.), Rothstein, J. H. (Joseph H.), McGuire, V. (Valerie), Sieh, W. (Weiva), Cai, H. (Hui), Shu, X.-O. (Xiao-Ou), Teten, R. T. (Rachel T.), Sutphen, R. (Rebecca), McLaughlin, J. R. (John R.), Narod, S. A. (Steven A.), Phelan, C. M. (Catherine M.), Monteiro, A. N. (Alvaro N.), Fenstermacher, D. (David), Lin, H.-Y. (Hui-Yi), Permuth, J. B. (Jennifer B.), Sellers, T. A. (Thomas A.), Chen, Y. A. (Y. Ann), Tsai, Y.-Y. (Ya-Yu), Chen, Z. (Zhihua), Gentry-Maharaj, A. (Aleksandra), Gayther, S. A. (Simon A.), Ramus, S. J. (Susan J.), Menon, U. (Usha), Wu, A. H. (Anna H.), Pearce, C. L. (Celeste L.), Van den Berg, D. (David), Pike, M. C. (Malcolm C.), Dansonka-Mieszkowska, A. (Agnieszka), Plisiecka-Halasa, J. (Joanna), Moes-Sosnowska, J. (Joanna), Kupryjanczyk, J. (Jolanta), Pharoah, P. D. (Paul D. P.), Song, H. (Honglin), Winship, I. (Ingrid), Chenevix-Trench, G. (Georgia), Giles, G. G. (Graham G.), Tavtigian, S. V. (Sean V.), Easton, D. F. (Doug F.), Milne, R. L. (Roger L.)

    الوصف: Background: The rarity of mutations in PALB2, CHEK2 and ATM make it difficult to estimate precisely associated cancer risks. Population-based family studies have provided evidence that at least some of these mutations are associated with breast cancer risk as high as those associated with rare BRCA2 mutations. We aimed to estimate the relative risks associated with specific rare variants in PALB2, CHEK2 and ATM via a multicentre case-control study. Methods: We genotyped 10 rare mutations using the custom iCOGS array: PALB2 c.1592delT, c.2816T>G and c.3113G>A, CHEK2 c.349A>G, c.538C>T, c.715G>A, c.1036C>T, c.1312G>T, and c.1343T>G and ATM c.7271T>G. We assessed associations with breast cancer risk (42 671 cases and 42 164 controls), as well as prostate (22 301 cases and 22 320 controls) and ovarian (14 542 cases and 23 491 controls) cancer risk, for each variant. Results: For European women, strong evidence of association with breast cancer risk was observed for PALB2 c.1592delT OR 3.44 (95% CI 1.39 to 8.52, p = 7.1 × 10⁻⁵), PALB2 c.3113G>A OR 4.21 (95% CI 1.84 to 9.60, p = 6.9 × 10⁻⁸) and ATM c.7271T>G OR 11.0 (95% CI 1.42 to 85.7, p = 0.0012). We also found evidence of association with breast cancer risk for three variants in CHEK2, c.349A>G OR 2.26 (95% CI 1.29 to 3.95), c.1036C>T OR 5.06 (95% CI 1.09 to 23.5) and c.538C>T OR 1.33 (95% CI 1.05 to 1.67) (p ≤ 0.017). Evidence for prostate cancer risk was observed for CHEK2 c.1343T>G OR 3.03 (95% CI 1.53 to 6.03, p = 0.0006) for African men and CHEK2 c.1312G>T OR 2.21 (95% CI 1.06 to 4.63, p = 0.030) for European men. No evidence of association with ovarian cancer was found for any of these variants. Conclusions: This report adds to accumulating evidence that at least some variants in these genes are associated with an increased risk of breast cancer that is clinically important.

    وصف الملف: application/pdf

    العلاقة: info:eu-repo/semantics/altIdentifier/pissn/0022-2593; info:eu-repo/semantics/altIdentifier/eissn/1468-6244

  10. 110
    دورية أكاديمية

    المساهمون: European and Developing Countries Clinical Trials Partnership (NL), Johns Hopkins University Center for AIDS Research

    المصدر: Trials ; volume 17, issue 1 ; ISSN 1745-6215

    مصطلحات موضوعية: Pharmacology (medical), Medicine (miscellaneous)