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Ling S, Hamm G, Wallez Y, Richards F, Johnson I, Dunlop C, Barry S, Jodrell D, Lau A, Goodwin R. PO-261 Multimodal mass spectrometry imaging to understand drug delivery, metabolism, response and amp; resistance in pancreatic ductal adenocarcinoma. ESMO Open 2018. [DOI: 10.1136/esmoopen-2018-eacr25.776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Boni C, Vecchi A, Rossi M, Laccabue D, Giuberti T, Alfieri A, Lampertico P, Grossi G, Facchetti F, Brunetto MR, Coco B, Cavallone D, Mangia A, Santoro R, Piazzolla V, Lau A, Gaggar A, Subramanian GM, Ferrari C. TLR7 Agonist Increases Responses of Hepatitis B Virus-Specific T Cells and Natural Killer Cells in Patients With Chronic Hepatitis B Treated With Nucleos(T)Ide Analogues. Gastroenterology 2018; 154:1764-1777.e7. [PMID: 29378197 DOI: 10.1053/j.gastro.2018.01.030] [Citation(s) in RCA: 108] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 01/08/2018] [Accepted: 01/17/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS The oral Toll-like receptor (TLR) 7 agonist GS-9620 has antiviral effects in woodchuck and chimpanzee models of chronic hepatitis B virus (HBV) infection. We investigated, in a clinical trial, the capacity of this agent to reconstitute protective immunity in patients with chronic HBV infection. METHODS We performed a prospective study of 28 patients with suppression of HBV infection by nucleos(t)ide analogue therapy and who tested negative for hepatitis B e antigen at 4 medical centers in Italy. Patients were randomly assigned (1:3:3:3) to groups given placebo or different doses of GS-9620 (1, 2, and 4 mg, weekly for 12 weeks). We added data from 8 patients receiving nucleos(t)ide analogue therapy to the placebo group (controls); 13 treatment-naïve patients with chronic HBV infection and 15 subjects who spontaneously recovered from an acute HBV infection served as additional controls. Peripheral blood mononuclear cells were collected at baseline, during administration of GS-9620 or placebo, and 12 weeks afterward. Phenotype and function of natural killer (NK) and HBV-specific T cells were analyzed by flow cytometry. T cells were expanded by incubation with peptides from the entire HBV proteome and studied after overnight or 10 days culture. NK-cell inhibition of T-cell responses was measured by assessing cytokine production by T cells stimulated with peptides in the presence or absence of NK cells. RESULTS T cells collected at baseline before addition of GS-9620, when patients were receiving only nucleos(t)ide therapy, had greater responses to HBV than T cells from treatment-naïve patients, based on cytokine production in response to HBV peptides. However, during or after administration of GS-9620, T cells produced higher levels of cytokines compared to baseline. NK-cell activation and function increased after patients were given GS-9620, but the ability of NK cells to suppress T-cell responses was lower during GS-9620 therapy than before. Changes in T-cell or NK-cell function did not correlate with levels of hepatitis B surface antigen. Serum levels of hepatitis B surface antigen did not decrease significantly compared to baseline in patients given any dose of GS-9620. CONCLUSIONS Twelve weeks administration of GS-9620 had no significant effect on serum hepatitis B surface antigen levels, but did appear to increase T-cell and NK-cell responses and reduce the ability of NK to suppress T cells. GS-9620 might therefore be included in therapies to increase the immune response to HBV.
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Christianto S, Lau A, Li K, Yang W, Su Y. One versus two venous anastomoses in microsurgical head and neck reconstruction: a cumulative meta-analysis. Int J Oral Maxillofac Surg 2018; 47:585-594. [DOI: 10.1016/j.ijom.2018.01.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 12/24/2017] [Accepted: 01/09/2018] [Indexed: 11/15/2022]
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Long R, Lau A. How R G Ferguson's groundbreaking studies influenced our understanding of tuberculosis reinfection. Where to next? Int J Tuberc Lung Dis 2018; 20:1285-1287. [PMID: 27725035 DOI: 10.5588/ijtld.16.0447] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Teng N, Cheng D, Stocker R, Lau A. Correlation of Myeloperoxidase Levels in Coronary and Peripheral Arterial Blood With Plaque Morphology by Optical Coherence Tomography in Acute Coronary Syndrome. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.599] [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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Kastner M, Perrier L, Munce SEP, Adhihetty CC, Lau A, Hamid J, Treister V, Chan J, Lai Y, Straus SE. Complex interventions can increase osteoporosis investigations and treatment: a systematic review and meta-analysis. Osteoporos Int 2018; 29:5-17. [PMID: 29043392 DOI: 10.1007/s00198-017-4248-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 09/26/2017] [Indexed: 01/06/2023]
Abstract
Osteoporosis is affecting over 200 million people worldwide. Despite available guidelines, care for these patients remains sub-optimal. We developed an osteoporosis tool to address the multiple dimensions of chronic disease management. Findings from its evaluation showed a significant increase from baseline in osteoporosis investigations and treatment, so we are revising this tool to include multiple chronic conditions including an update of evidence about osteoporosis. Our objectives were to conduct a systematic review of osteoporosis interventions in adults at risk for osteoporosis. We searched bibliometric databases for randomized controlled trials (RCTs) in any language evaluating osteoporosis disease management interventions in adults at risk for osteoporosis. Reviewer pairs independently screened citations and full-text articles, extracted data, and assessed risk of bias. Analysis included random effects meta-analysis. Primary outcomes were osteoporosis investigations and treatment, and fragility fractures. Fifty-five RCTs and one companion report were included in the analysis representing 165,703 patients. Our findings from 55 RCTs and 18 sub-group meta-analyses showed that complex implementation interventions with multiple components consisting of at least education + feedback + follow-up significantly increased the initiation of osteoporosis medications, and interventions with at least education + follow-up significantly increased the initiation of osteoporosis investigations. No significant impact was found for any type of intervention to reduce fracture. Complex interventions that include at least education + follow-up or feedback have the most potential for increasing osteoporosis investigations and treatment. Patient education appears to be an important component in osteoporosis disease management.
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Yau V, Raman S, Pineda S, Le L, Lau A, Bezjak A, Cho J, Sun A, Hope A, Giuliani M. MA 09.02 Ultra-Central Tumors Treated with Stereotactic Body Radiotherapy: A Single Institutional Experience. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.525] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Yau V, Lindsay P, Hope A, Le L, Glick D, Lau A, Cho J, Bezjak A, Sun A, Giuliani M. Esophageal Toxicity in Thoracic Stereotactic Radiation Therapy. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.2391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Varga Z, Sinn P, McCullough D, Lau A, Stöppler M, Baehner F, Chao C, Seidman A. Summary of head-to-head comparisons of patient (pt) risk classifications by the 21-gene recurrence score (RS) assay and other genomic assays for early breast cancer (EBC). Ann Oncol 2017. [DOI: 10.1093/annonc/mdx362.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Vijendren A, Coates M, Smith ME, Ajayi OV, Al-Dhahir W, Bewick J, Bowles PF, Coyle P, Davies-Husband CR, Erskine SE, Halliday E, Kaleva AI, Lau A, Langstaff L, Mathew E, Meghji S, Testera A, Thomas JRV, Eisenhut M. Management of pinna haematoma study (MaPHaeS): A multicentre retrospective observational study. Clin Otolaryngol 2017; 42:1252-1258. [PMID: 28247538 DOI: 10.1111/coa.12858] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/24/2017] [Indexed: 11/28/2022]
Abstract
OBJECTIVES To assess current variation in the management of pinna haematoma (PH) and its effect on outcomes. DESIGN Multicentre retrospective observational record-based study. SETTING Eleven hospitals around the UK. PARTICIPANTS Eighty-three patients above the age of 16 with PH. OUTCOME MEASURES The primary outcome measure was recurrence rate of PH over a 6-month period post-treatment, assessed by treatment type (scalpel incision vs needle aspiration). Secondary outcome measures assessed the impact of other factors on recurrence, infection and cosmetic complications of PH over a period of 6 months. RESULTS After adjusting for confounding factors, involvement of the whole ear, and management within an operating theatre were associated with a lower rate of recurrence of pinna haematoma. The drainage technique, suspected aetiology, choice of post-drainage management, grade and specialty of practitioner performing drainage, the use of antibiotic cover and hospital admission did not affect the rate of haematoma recurrence, infection or cosmetic complications. CONCLUSIONS Where possible PH should be drained in an operating theatre. Multicentre randomized controlled trials are required to further investigate the impact of drainage technique and post-drainage management on outcome.
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Robidoux A, McCullough D, Lau A, Stöppler M, Chao C. Use of the 21-gene Oncotype DX® Breast Recurrence Score™ (RS) assay in the neoadjuvant treatment setting. Breast 2017. [DOI: 10.1016/s0960-9776(17)30262-x] [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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Lau A, Li K, Yang W, Su Y. Induction chemotherapy for squamous cell carcinomas of the oral cavity: a cumulative meta-analysis. Int J Oral Maxillofac Surg 2017. [DOI: 10.1016/j.ijom.2017.02.439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Haughey BH, Sinha P, Kallogjeri D, Goldberg RL, Lewis JS, Piccirillo JF, Jackson RS, Moore EJ, Brandwein-Gensler M, Magnuson SJ, Carroll WR, Jones TM, Wilkie MD, Lau A, Upile NS, Sheard J, Lancaster J, Tandon S, Robinson M, Husband D, Ganly I, Shah JP, Brizel DM, O'Sullivan B, Ridge JA, Lydiatt WM. Pathology-based staging for HPV-positive squamous carcinoma of the oropharynx. Oral Oncol 2016; 62:11-19. [PMID: 27865363 PMCID: PMC5523818 DOI: 10.1016/j.oraloncology.2016.09.004] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 09/06/2016] [Accepted: 09/14/2016] [Indexed: 01/23/2023]
Abstract
OBJECTIVE The rapid worldwide rise in incidence of human papillomavirus (HPV)-positive oropharyngeal squamous cell carcinoma (OPSCC) has generated studies confirming this disease as an entity distinct from traditional OPSCC. Based on pathology, surgical studies have revealed prognosticators specific to HPV-positive OPSCC. The current AJCC/UICC staging and pathologic nodal (pN)-classification do not differentiate for survival, demonstrating the need for new, HPV-specific OPSCC staging. The objective of this study was to define a pathologic staging system specific to HPV-positive OPSCC. METHODS Data were assembled from a surgically-managed, p16-positive OPSCC cohort (any T, any N, M0) of 704 patients from five cancer centers. Analysis was performed for (a) the AJCC/UICC pathologic staging, (b) newly published clinical staging for non-surgically managed HPV-positive OPSCC, and (c) a novel, pathology-based, "HPVpath" staging system that combines features of the primary tumor and nodal metastases. RESULTS A combination of AJCC/UICC pT-classification and pathology-confirmed metastatic node count (⩽4 versus ⩾5) yielded three groups: stages I (pT1-T2, ⩽4 nodes), II (pT1-T2, ⩾5 nodes; pT3-T4, ⩽4 nodes), and III (pT3-T4, ⩾5 nodes), with incrementally worse prognosis (Kaplan-Meier overall survival of 90%, 84% and 48% respectively). Existing AJCC/UICC pathologic staging lacked prognostic definition. Newly published HPV-specific clinical stagings from non-surgically managed patients, although prognostic, showed lower precision for this surgically managed cohort. CONCLUSIONS Three loco-regional "HPVpath" stages are identifiable for HPV-positive OPSCC, based on a combination of AJCC/UICC primary tumor pT-classification and metastatic node count. A workable, pathologic staging system is feasible to establish prognosis and guide adjuvant therapy decisions in surgically-managed HPV-positive OPSCC.
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Rodin D, Banihashemi B, Wang L, Lau A, Harris S, Levin W, Dinniwell R, Millar BA, Chung C, Laperriere N, Bezjak A, Wong RKS. The Brain Metastases Symptom Checklist as a novel tool for symptom measurement in patients with brain metastases undergoing whole-brain radiotherapy. ACTA ACUST UNITED AC 2016; 23:e239-47. [PMID: 27330360 DOI: 10.3747/co.23.2936] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
PURPOSE We evaluated the feasibility, reliability, and validity of the Brain Metastases Symptom Checklist (bmsc), a novel self-report measure of common symptoms experienced by patients with brain metastases. METHODS Patients with first-presentation symptomatic brain metastases (n = 137) referred for whole-brain radiotherapy (wbrt) completed the bmsc at time points before and after treatment. Their caregivers (n = 48) provided proxy ratings twice on the day of consultation to assess reliability, and at week 4 after wbrt to assess responsiveness to change. Correlations with 4 other validated assessment tools were evaluated. RESULTS The symptoms reported on the bmsc were largely mild to moderate, with tiredness (71%) and difficulties with balance (61%) reported most commonly at baseline. Test-retest reliability for individual symptoms had a median intraclass correlation of 0.59 (range: 0.23-0.85). Caregiver proxy and patient responses had a median intraclass correlation of 0.52. Correlation of absolute scores on the bmsc and other symptom assessment tools was low, but consistency in the direction of symptom change was observed. At week 4, change in symptoms was variable, with improvements in weight gain and sleep of 42% and 41% respectively, and worsening of tiredness and drowsiness of 62% and 59% respectively. CONCLUSIONS The bmsc captures a wide range of symptoms experienced by patients with brain metastases, and it is sensitive to change. It demonstrated adequate test-retest reliability and face validity in terms of its responsiveness to change. Future research is needed to determine whether modifications to the bmsc itself or correlation with more symptom-specific measures will enhance validity.
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Lau A, Liu H, Ren L, Ahmad S, Chen Y. SU-F-I-69: Absorbed Dose Estimation for a Commercially Available MicroCT Scanner with Various Filtration Techniques. Med Phys 2016. [DOI: 10.1118/1.4955897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Ferguson S, Ahmad S, Chen Y, Ferreira C, Islam M, Keeling V, Lau A, Jin H. SU-F-T-143: Implementation of a Correction-Based Output Model for a Compact Passively Scattered Proton Therapy System. Med Phys 2016. [DOI: 10.1118/1.4956279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Wong-Pack M, Rodjanapiches R, Lau A, Ioannidis G, Wade S, Balasubramanian A, Lin C, Roy-Gayos P, Bensen W, Bensen R, Adachi J. FRI0221 Occurrence of Serious Infection in Patients with Rheumatoid Arthritis Treated with Biologics and Denosumab Observed in A Clinical Setting:. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.1109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Jin H, Ahmad S, Chen Y, Keeling V, Lau A, Islam M, Ferreira C, Ferguson S. SU-F-T-160: Commissioning of a Single-Room Double-Scattering Proton Therapy System. Med Phys 2016. [DOI: 10.1118/1.4956296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Russ M, Shankar A, Lau A, Bednarek D, Rudin S. TU-FG-209-05: Demonstration of the Line Focus Principle Using the Generalized Measured-Relative Object Detectability (GM-ROD) Metric. Med Phys 2016. [DOI: 10.1118/1.4957575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Boese S, Golla A, Beutner K, Mau W, Jahn P, Bauer A, Schlitt A, Lau A. Exergames als bewegungstherapeutisches Angebot – Nutzerakzeptanz und Beanspruchung im Rahmen der stationären onkologischen Rehabilitation. PHYSIKALISCHE MEDIZIN, REHABILITATIONSMEDIZIN, KURORTMEDIZIN 2016. [DOI: 10.1055/s-0041-110399] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Chung H, Vilaysane A, Lau A, Stahl M, Morampudi V, Bondzi-Simpson A, Platnich JM, Bracey NA, French MC, Beck PL, Chun J, Vallance BA, Muruve DA. NLRP3 regulates a non-canonical platform for caspase-8 activation during epithelial cell apoptosis. Cell Death Differ 2016; 23:1331-46. [PMID: 26891693 DOI: 10.1038/cdd.2016.14] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 12/30/2015] [Accepted: 01/20/2016] [Indexed: 12/31/2022] Open
Abstract
Nod-like receptor, pyrin containing 3 (NLRP3) is characterized primarily as a canonical caspase-1 activating inflammasome in macrophages. NLRP3 is also expressed in the epithelium of the kidney and gut; however, its function remains largely undefined. Primary mouse tubular epithelial cells (TEC) lacking Nlrp3 displayed reduced apoptosis downstream of the tumor necrosis factor (TNF) receptor and CD95. TECs were identified as type II apoptotic cells that activated caspase-8, tBid and mitochondrial apoptosis via caspase-9, responses that were reduced in Nlrp3-/- cells. The activation of caspase-8 during extrinsic apoptosis induced by TNFα/cycloheximide (TNFα/CHX) was dependent on adaptor protein apoptosis-associated speck-like protein containing a CARD (ASC) and completely independent of caspase-1 or caspase-11. TECs and primary human proximal tubular epithelial cells (HPTC) did not activate a canonical inflammasome, caspase-1, or IL-1β secretion in response to TNFα/CHX or NLRP3-dependent triggers, such as ATP or nigericin. In cell fractionation studies and by confocal microscopy, NLRP3 colocalized with ASC and caspase-8 in speck-like complexes at the mitochondria during apoptosis. The formation of NLRP3/ASC/caspase-8 specks in response to TNFα/CHX was downstream of TNFR signaling and dependent on potassium efflux. Epithelial ASC specks were present in enteroids undergoing apoptosis and in the injured tubules of wild-type but not Nlrp3-/- or ASC-/- mice following ureteric unilateral obstruction in vivo. These data show that NLRP3 and ASC form a conserved non-canonical platform for caspase-8 activation, independent of the inflammasome that regulates apoptosis within epithelial cells.
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Schmidt H, Boese S, Bauer A, Landenberger M, Lau A, Stoll O, Schmoll HJ, Mauz-Koerholz C, Kuss O, Jahn P. Interdisciplinary care programme to improve self-management for cancer patients undergoing stem cell transplantation: a prospective non-randomised intervention study. Eur J Cancer Care (Engl) 2016; 26. [DOI: 10.1111/ecc.12458] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/04/2016] [Indexed: 12/14/2022]
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Lau A, Wilkie M, Jones T, Boyd M. P53 can be stabilised by a combination of Nutlin-3 and irradiation in human papillomavirus-positive oropharyngeal carcinoma cells, with no apparent effect on cell growth or clonogenic survival. Int J Surg 2015. [DOI: 10.1016/j.ijsu.2015.07.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Kannan V, Lau A, Hodgson N, Goodin K, Mohamed A, McConahey W, LoVecchio F. 283 The Creation of the Maricopa Integrated Health System Disease Surveillance Project. Ann Emerg Med 2015. [DOI: 10.1016/j.annemergmed.2015.07.317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Lau A, Spark S, Tomnay J, Temple-Smith M, Fairley CK, Guy R, Donovan B, Hocking JS. P08.30 Chlamydia tests ordered, but not undertaken: socio-demographic and structural barriers in general practice. Br J Vener Dis 2015. [DOI: 10.1136/sextrans-2015-052270.376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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