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Conduit C, Hutchinson AD, Leonard M, O 'Haire S, Moody M, Thomas B, Sim I, Hong W, Ahmad G, Lawrentschuk N, Lewin J, Tran B, Dhillon HM. An exploration of testicular cancer survivors' experience of ejaculatory dysfunction following retroperitoneal lymph node dissection-a sub-study of the PREPARE clinical trial. J Cancer Surviv 2023:10.1007/s11764-023-01489-9. [PMID: 37981616 DOI: 10.1007/s11764-023-01489-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 10/20/2023] [Indexed: 11/21/2023]
Abstract
PURPOSE Ejaculatory dysfunction secondary to retrograde ejaculation or anejaculation is a complication of retroperitoneal lymph node dissection (RPLND) for survivors of testicular cancer. We explored survivors' experiences of ejaculatory dysfunction following RPLND. METHODS In a sub-study of a single-arm phase 2 clinical trial (ACTRN12622000537752/12622000542796), participants reporting ejaculatory dysfunction ≥ 6 months following RPLND were invited to complete semi-structured interviews. Purposive sampling was used. Interviews continued until thematic saturation occurred, and codebook thematic analysis of interviews was performed. RESULTS Of 58 individuals recruited to the trial, 33 (57%) reported ejaculatory dysfunction. Of these, 32 (97%) agreed to interview and 15 participated. Participants interviewed had median age 34 years (range 24-66), 12 (80%) in a long-term relationship with median time from surgery 36 months (range 11-112). Three overarching themes were identified. The first reflected the value of RPLND despite ejaculatory dysfunction. The second illuminated the impact(s) of ejaculatory dysfunction closely mapped to life stage, with flow-on impacts to fertility, sex, psychological wellbeing and communication. The third reflected information needs. Fertility was a substantial source of concern for some participants. Ejaculatory dysfunction had no effect on sex for some, whilst for others, sex was less pleasurable. Some reported benefits. Few reported ejaculatory dysfunction challenged masculinity, confidence, or self-esteem. CONCLUSIONS Future research should examine interventions to reduce distress related to fertility, challenged masculinity and body image. IMPLICATIONS FOR CANCER SURVIVORS Whilst most participants considered ejaculatory dysfunction to have little impact on their sexual function and relationships, some reported significant difficulties varying by life stage and relationship status.
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Affiliation(s)
- C Conduit
- Medical Oncology, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
- Sir Peter MacCallum Department of Medical Oncology, University of Melbourne, 305 Grattan St., Melbourne, VIC, Australia
- Personalised Oncology, Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC, Australia
| | - A D Hutchinson
- Justice & Society, Behaviour-Brain-Body Research Centre, University of South Australia, Magill, Australia
| | - M Leonard
- The Australian and New Zealand Urogenital and Prostate (ANZUP) Cancer Trials Group, Camperdown, Australia
| | - S O 'Haire
- Medical Oncology, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
- Personalised Oncology, Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC, Australia
| | - M Moody
- Medical Oncology, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
- Personalised Oncology, Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC, Australia
| | - B Thomas
- Surgery, Royal Melbourne Hospital, University of Melbourne, Melbourne, VIC, Australia
| | - I Sim
- Endocrinology, Monash Health and Eastern Health, Clayton, VIC, Australia
- Melbourne Medical School, University of Melbourne, Melbourne, VIC, Australia
- Department of Medicine, School of Clinical Sciences, Monash University, Clayton, VIC, Australia
| | - W Hong
- Personalised Oncology, Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC, Australia
| | - G Ahmad
- Andrology, Royal Children's Hospital, Melbourne, VIC, Australia
| | - N Lawrentschuk
- Surgery, Royal Melbourne Hospital, University of Melbourne, Melbourne, VIC, Australia
- Urology, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
| | - J Lewin
- Medical Oncology, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
- Sir Peter MacCallum Department of Medical Oncology, University of Melbourne, 305 Grattan St., Melbourne, VIC, Australia
- ONTrac at Peter Mac, Victorian Adolescent and Young Adult Cancer Service, Melbourne, VIC, Australia
| | - B Tran
- Medical Oncology, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia.
- Sir Peter MacCallum Department of Medical Oncology, University of Melbourne, 305 Grattan St., Melbourne, VIC, Australia.
- Personalised Oncology, Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC, Australia.
| | - H M Dhillon
- Centre for Medical Psychology and Evidence-Based Decision-Making, School of Psychology, Faculty of Science, The University of Sydney, Sydney, NSW, Australia
- Psycho-Oncology Cooperative Research Group, School of Psychology, Faculty of Science, The University of Sydney, Sydney, NSW, Australia
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Macklin MG, Thomas CJ, Mudbhatkal A, Brewer PA, Hudson-Edwards KA, Lewin J, Scussolini P, Eilander D, Lechner A, Owen J, Bird G, Kemp D, Mangalaa KR. Impacts of metal mining on river systems: a global assessment. Science 2023; 381:1345-1350. [PMID: 37733841 DOI: 10.1126/science.adg6704] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 08/18/2023] [Indexed: 09/23/2023]
Abstract
An estimated 23 million people live on floodplains affected by potentially dangerous concentrations of toxic waste derived from past and present metal mining activity. We analyzed the global dimensions of this hazard, particularly in regard to lead, zinc, copper, and arsenic, using a georeferenced global database detailing all known metal mining sites and intact and failed tailings storage facilities. We then used process-based and empirically tested modeling to produce a global assessment of metal mining contamination in river systems and the numbers of human populations and livestock exposed. Worldwide, metal mines affect 479,200 kilometers of river channels and 164,000 square kilometers of floodplains. The number of people exposed to contamination sourced from long-term discharge of mining waste into rivers is almost 50 times greater than the number directly affected by tailings dam failures.
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Affiliation(s)
- M G Macklin
- Lincoln Centre for Water and Planetary Health, University of Lincoln, Lincoln, UK
- Innovative River Solutions, Institute of Agriculture and Environment, Massey University, Palmerston North, New Zealand
- Centre for the Study of the Inland, La Trobe University, Melbourne, Australia
| | - C J Thomas
- Lincoln Centre for Water and Planetary Health, University of Lincoln, Lincoln, UK
- University of Namibia, Windhoek, Namibia
| | - A Mudbhatkal
- Lincoln Centre for Water and Planetary Health, University of Lincoln, Lincoln, UK
| | - P A Brewer
- Department of Geography and Earth Sciences, Aberystwyth University, Aberystwyth, Ceredigion, UK
| | - K A Hudson-Edwards
- Environment & Sustainability Institute and Camborne School of Mines, University of Exeter, Penryn, Cornwall, UK
| | - J Lewin
- Department of Geography and Earth Sciences, Aberystwyth University, Aberystwyth, Ceredigion, UK
| | - P Scussolini
- Institute for Environmental Studies, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - D Eilander
- Institute for Environmental Studies, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
- Department of Inland Water Systems, Deltares, Delft, Netherlands Institute for Environmental Studies, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - A Lechner
- Monash University Indonesia, Jakarta, Indonesia
| | - J Owen
- Centre for Development Support, University of the Free State, Bloemfontein, South Africa
| | - G Bird
- School of Natural Sciences, Bangor University, Bangor, Gwynedd, UK
| | - D Kemp
- Centre for Social Responsibility in Mining, Sustainable Minerals Institute, The University of Queensland, St Lucia, Australia
| | - K R Mangalaa
- Ministry of Earth Sciences, Government of India, New Delhi, India
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Manobharath N, Lewin J, Hirsch M, Naftalin J, Vashisht A, Cutner A, Saridogan E. Excisional endometriosis surgery with hysterectomy and bilateral salpingo-oophorectomy versus excisional endometriosis surgery alone for pelvic pain associated with deep endometriosis. Facts Views Vis Obgyn 2023; 15:35-43. [PMID: 37010333 PMCID: PMC10392119 DOI: 10.52054/fvvo.15.1.055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
Abstract
Background: There is no agreed consensus on the optimal surgical treatment for pain associated with endometriosis.
Objectives: To compare improvement in symptoms and quality-of-life in patients undergoing excisional endometriosis surgery (EES) versus EES with hysterectomy and bilateral salpingo-oophorectomy (EES-HBSO).
Methods: This study evaluated patients undergoing EES and EES-HBSO at a single endometriosis centre between 2009 and 2019. Data was obtained from the British Society for Gynaecological Endoscopy database. Adenomyosis was assessed by blinded re-analysis of imaging and/or histology data.
Main outcome measures: Pain scores (numeric rating scale 0-10) and quality-of-life scores (EQ-VAS) before and after EES and EES-HBSO.
Results: We included 120 patients undergoing EES and 100 patients undergoing EES-HBSO. After controlling for baseline characteristics and the presence of adenomyosis, there was greater post-op improvement in non-cyclical pelvic pain amongst patients undergoing EES-HBSO compared to EES alone.The baseline pain scores had improved in the EES-HBSO cohort by 2.106/10 at 6 months (95%CI 0.469-3.742, p=0.012), 2.642/10 at 12 months (95%CI 0.871-4.413, p=0.004), and 2.548/10 at 24 months (95%CI 0.681-4.414, p=0.008), when compared to the EES group. Greater improvement amongst EES-HBSO patients was also seen for dyspareunia, non-cyclical dyschaezia and bladder pain. Patients undergoing EES-HBSO had greater improvement in EQ-VAS, although this was no longer statistically significant after controlling for adenomyosis.
Conclusion: EES-HBSO appears to provide greater benefit than EES alone for symptoms including non-cyclical pelvic pain as well as for quality-of-life. Further research is required to determine which patients benefit the most from EES-HBSO, and whether removal of the ovaries, uterus or both is the key to this additional benefit in symptom control.
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Mitchell C, Malalasekera V, Gill AJ, Vissers JHA, Luen SJ, Grimmond SM, Lewin J. Primary pancreatic spindle cell sarcoma with a TMEM106B::BRAF gene fusion treated with MEK inhibition. Pathology 2023; 55:127-129. [PMID: 35738942 DOI: 10.1016/j.pathol.2022.03.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 03/17/2022] [Accepted: 03/23/2022] [Indexed: 01/24/2023]
Affiliation(s)
- C Mitchell
- Department of Pathology, Peter MacCallum Cancer Centre, Melbourne, Vic, Australia.
| | - V Malalasekera
- Department of Cancer Medicine, Peter MacCallum Cancer Centre, Melbourne, Vic, Australia; ONTrac at Peter Mac Victorian Adolescent and Young Adult Cancer Service, Vic, Australia
| | - A J Gill
- NSW Health Pathology, Department of Anatomical Pathology, Royal North Shore Hospital, Sydney, NSW, Australia; Sydney Medical School, University of Sydney, Sydney, NSW, Australia
| | - J H A Vissers
- Centre for Cancer Research and Department of Clinical Pathology, The University of Melbourne, Melbourne, Vic, Australia; Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Vic, Australia
| | - S J Luen
- Department of Cancer Medicine, Peter MacCallum Cancer Centre, Melbourne, Vic, Australia; Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Vic, Australia
| | - S M Grimmond
- Centre for Cancer Research and Department of Clinical Pathology, The University of Melbourne, Melbourne, Vic, Australia
| | - J Lewin
- Department of Cancer Medicine, Peter MacCallum Cancer Centre, Melbourne, Vic, Australia; ONTrac at Peter Mac Victorian Adolescent and Young Adult Cancer Service, Vic, Australia; Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Vic, Australia
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Lewin J, Saridogan E, Byrne D, Clark TJ, Vashisht A. Impact of the COVID-19 pandemic on surgery for severe endometriosis in the UK: a national database study. Facts Views Vis Obgyn 2022; 14:309-315. [PMID: 36724422 PMCID: PMC10364332 DOI: 10.52054/fvvo.14.4.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Background The COVID-19 pandemic has had a significant effect on healthcare services, particularly affecting patients who suffer from chronic conditions. However, the pandemic's effect on endometriosis surgery is not yet known. Objectives To determine the impact of the COVID-19 pandemic on surgery for severe endometriosis in the UK at a national, regional and centre-level. Materials and Methods The British Society for Gynaecological Endoscopy (BSGE) collects data nationally on all operations for severe endometriosis which involve dissection of the pararectal space. Annual audits of this database were obtained from the BSGE. Publicly available data on COVID-19 cases and population were obtained from the UK Office for National Statistics. Main outcome measures Numbers of annual BSGE-registered endometriosis operations. Results A total of 8204 operations were performed. The number of operations decreased by 49.4% between 2019 and 2020 and then increased in 2021, but remained 10.5% below average pre-pandemic levels, indicating at least 980 missed operations between 2019-2020. Median operations per centre decreased by 51.0% in 2020 (IQR 29.4% - 75.0%) and increased in 2021 but remained 33% below pre-pandemic levels. There was no change in the type of surgery performed. All 11 administrative regions of Great Britain had reduced numbers of operations in 2020 compared with the average for 2017-2019, with a median 44.2% decrease (range 13.3% - 67.5%). Regional reduction in operations was correlated with COVID-19 infection rates (r=0.54, 95% CI of r 0.022 - 1.00, p=0.043). Conclusion The number of operations performed annually in the UK for severe endometriosis fell dramatically during the COVID-19 pandemic and is yet to normalise. What's new? This study shows the dramatic effect that the COVID-19 pandemic has had on UK services for endometriosis surgery, which may continue to affect patients and clinicians for a considerable time to come.
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Puttaroo I, Sheppard K, Lewin J, Sriranjan S. Improving Awareness of Safe Sleeping Practices for Babies on a Mother and Baby Psychiatric Unit. Eur Psychiatry 2022. [PMCID: PMC9567229 DOI: 10.1192/j.eurpsy.2022.1933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction SIDS is the sudden, unexpected and unexplained death of a baby. Safe sleeping practices can help to reduce a baby’s risk of SIDS. At the Coombe Wood Mother & Baby Unit (MBU), it was found that many patients were opting to co-sleep with their babies which contradicts safe sleeping guidelines. Objectives To improve patient awareness of the condition SIDS and to implement an interactive training session improving awareness of safe sleeping practices for babies. To improve patients’ confidence in implementing safe sleeping practices for their babies; thus reducing the risk of SIDS occurring. Methods The Lullaby Trust™ is a charity that raises awareness of SIDS and provides expert advice on safe sleep for babies. An interactive training session for patients was organised by incorporating published materials from The Lullaby Trust™, facilitated by medical and occupational therapy staff on the MBU. The participants filled out a pre-training and post-training questionnaire to test the effectiveness and quality of the training session. Results The participants’ average level of confidence in knowing and applying safe sleeping practices for their babies doubled following the training session (from 2.3→4.8 and 2.6→5 respectively, with 5 meaning “Very Confident.”) The average level of knowledge of SIDS also increased from 1.6→4.4 (with 5 meaning “A Lot” of Knowledge.) Conclusions We were surprised at the low level of knowledge and confidence the patients had regarding safe sleeping practices for their babies. This project shows how interactive, ward-based training can be an effective way to engage and stimulate patients into improving the safety of their baby care. Disclosure No significant relationships.
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Salah S, To YH, Khozouz O, Ismail T, Yaser S, Alnsour A, Shahin O, Sultan I, Abuhijlih R, Halalsheh H, Abuhijla F, Lewin J. Irinotecan and temozolomide chemotherapy in paediatric and adult populations with relapsed Ewing Sarcoma. Clin Transl Oncol 2021; 23:757-763. [PMID: 32761317 DOI: 10.1007/s12094-020-02466-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 07/23/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND Irinotecan and temozolomide (IT) is a widely used regimen for relapsed Ewing sarcoma (ES), although studies are largely limited to paediatric populations. METHODS We retrospectively reviewed paediatric (< 18 years) and adult patients (≥ 18 years) treated with salvage IT at two institutions. Haematologic toxicities were graded according to common terminology criteria of adverse events. Survival was estimated by the Kaplan-Meier method and compared by the Log Rank test. RESULTS Fifty-three patients were treated with IT from Jan, 2010 to Dec, 2018 (n = 16 paediatric; n = 37 adult). IT was given as second-line (n = 34; 64%) or ≥ third-line (n = 19; 36%). There was no difference in ≥ grade 3/4 haematologic toxicity between paediatrics and adults (31% vs. 35% respectively; p = 0.76). The frequency of diarrhoea of any grade was similar (38% in each group). Of 43 patients assessable for response, 12 (28%) had objective response (1 CR, 11 PR), 12 (28%) stable disease and 19 (44%) disease progression. Objective response rate did not differ between the two groups (36% in paediatrics vs. 25% in adults; p = 0.47). Median PFS was superior in paediatrics vs. adults (7.4 vs. 2.2 months, p = 0.039). CONCLUSION Irinotecan and temozolomide (IT) chemotherapy has activity for relapsed ES, with favourable toxicity and equally observed objective responses in the paediatric and adult populations. The observed superior PFS for the paediatric cohort requires further confirmation in future studies.
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Affiliation(s)
- S Salah
- King Hussein Cancer Centre, Amman, Jordan
| | - Y H To
- Peter MacCallum Cancer Centre, Melbourne, Australia
| | - O Khozouz
- King Hussein Cancer Centre, Amman, Jordan
| | - T Ismail
- King Hussein Cancer Centre, Amman, Jordan
| | - S Yaser
- King Hussein Cancer Centre, Amman, Jordan
| | - A Alnsour
- King Hussein Cancer Centre, Amman, Jordan
| | - O Shahin
- King Hussein Cancer Centre, Amman, Jordan
- UT MD Anderson Cancer Centre, Huston, TX, USA
| | - I Sultan
- King Hussein Cancer Centre, Amman, Jordan
| | | | | | - F Abuhijla
- King Hussein Cancer Centre, Amman, Jordan
| | - J Lewin
- Peter MacCallum Cancer Centre, Melbourne, Australia.
- ONTrac at Peter Mac Victorian Adolescent and Young Adult Cancer Service, Melbourne, Australia.
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, Australia.
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Daud A, Kesete B, Sriranjan S, Britton E, Steel C, Lewin J. Evaluation of efficiency and quality of the multi-disciplinary team handover process in a mother and baby inpatient setting. Eur Psychiatry 2021. [PMCID: PMC9475588 DOI: 10.1192/j.eurpsy.2021.1339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Introduction At Coombe Wood Mother and Baby unit (MBU) there are daily multi-disciplinary team (MDT) handover meetings and a weekly MDT ward round attended by 7-8 team members. There are concerns that the handover is too time consuming, utilising time which could be spent on other clinical duties, and concerns regarding the relevance of information that is handed over. Objectives To perform a service evaluation to determine the efficiency and quality of MDT handover meetings in an MBU setting. Methods Data was collected from September to October 2020. A checklist was designed listing information felt to be relevant to handover and contained the following data points – ‘current situation’, ‘mental health’, ‘level of observations’, ‘risk’, ‘physical health’, ‘baby care’, ‘baby supervision levels’ and ‘tasks and responsibilities’. The start and stop times of each MDT handover meeting were noted and a record was made as to whether these topics were discussed. Results Mean meeting duration was 32.2 minutes (range: 13 – 45 minutes) and amounted to 2.68 hours spent in MDT handover over a 5-day working week. This equates to 21.4 person-hours (based on 8 staff) a week. 928 data points were generated. 50.7% (468) data points were recorded and commonly omitted data points were – ‘tasks and responsibilities’, ‘risk’, ‘level of observations’ and ‘physical health’. On all occasions, ‘current situation’, ‘mental health’ and ‘baby care’ were handed over. Conclusions The results of this service evaluation provide compelling evidence for a wider improvement project. Involving MDT staff in designing interventions will make handover meetings more meaningful.
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Lewin J, Sayers L, Kee D, Walpole I, Sanelli A, Te Marvelde L, Herschtal A, Spillane J, Gyorki D, Speakman D, Estall V, Donahoe S, Pohl M, Pope K, Chua M, Sandhu S, McArthur GA, McCormack CJ, Henderson M, Hicks RJ, Shackleton M. Surveillance imaging with FDG-PET/CT in the post-operative follow-up of stage 3 melanoma. Ann Oncol 2019; 29:1569-1574. [PMID: 29659679 DOI: 10.1093/annonc/mdy124] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Background As early detection of recurrent melanoma maximizes treatment options, patients usually undergo post-operative imaging surveillance, increasingly with FDG-PET/CT (PET). To assess this, we evaluated stage 3 melanoma patients who underwent prospectively applied and sub-stage-specific schedules of PET surveillance. Patients and methods From 2009, patients with stage 3 melanoma routinely underwent PET +/- MRI brain scans via defined schedules based on sub-stage-specific relapse probabilities. Data were collected regarding patient characteristics and outcomes. Contingency analyses were carried out of imaging outcomes. Results One hundred and seventy patients (stage 3A: 34; 3B: 93; 3C: 43) underwent radiological surveillance. Relapses were identified in 65 (38%) patients, of which 45 (69%) were asymptomatic. False-positive imaging findings occurred in 7%, and 6% had treatable second (non-melanoma) malignancies. Positive predictive values (PPV) of individual scans were 56%-83%. Negative scans had predictive values of 89%-96% for true non-recurrence [negative predictive values (NPV)] until the next scan. A negative PET at 18 months had NPVs of 80%-84% for true non-recurrence at any time in the 47-month (median) follow-up period. Sensitivity and specificity of the overall approach of sub-stage-specific PET surveillance were 70% and 87%, respectively. Of relapsed patients, 33 (52%) underwent potentially curative resection and 10 (16%) remained disease-free after 24 months (median). Conclusions Application of sub-stage-specific PET in stage 3 melanoma enables asymptomatic detection of most recurrences, has high NPVs that may provide patient reassurance, and is associated with a high rate of detection of resectable and potentially curable disease at relapse.
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Affiliation(s)
- J Lewin
- Department of Cancer Medicine, Peter MacCallum Cancer Centre, Victoria, Australia; Princess Margaret Cancer Centre, Toronto, Canada
| | - L Sayers
- Cancer Treatment and Development Laboratory, Peter MacCallum Cancer Centre, Victoria, Australia
| | - D Kee
- Department of Cancer Medicine, Peter MacCallum Cancer Centre, Victoria, Australia
| | - I Walpole
- Department of Cancer Medicine, Peter MacCallum Cancer Centre, Victoria, Australia
| | - A Sanelli
- Department of Cancer Medicine, Peter MacCallum Cancer Centre, Victoria, Australia
| | - L Te Marvelde
- Centre for Biostatistics and Clinical Trials, Peter MacCallum Cancer Centre, Victoria, Australia
| | - A Herschtal
- Centre for Biostatistics and Clinical Trials, Peter MacCallum Cancer Centre, Victoria, Australia
| | - J Spillane
- Department of Surgery, Peter MacCallum Cancer Centre, Victoria, Australia
| | - D Gyorki
- Department of Surgery, Peter MacCallum Cancer Centre, Victoria, Australia; Department of Surgery, St Vincent's Hospital, Victoria, Australia
| | - D Speakman
- Department of Surgery, Peter MacCallum Cancer Centre, Victoria, Australia
| | - V Estall
- Department of Radiation Oncology, Peter MacCallum Cancer Centre, Victoria, Australia
| | - S Donahoe
- Department of Surgery, Peter MacCallum Cancer Centre, Victoria, Australia
| | - M Pohl
- Department of Surgery, Peter MacCallum Cancer Centre, Victoria, Australia
| | - K Pope
- Department of Radiation Oncology, Peter MacCallum Cancer Centre, Victoria, Australia
| | - M Chua
- Department of Radiation Oncology, Peter MacCallum Cancer Centre, Victoria, Australia
| | - S Sandhu
- Department of Cancer Medicine, Peter MacCallum Cancer Centre, Victoria, Australia
| | - G A McArthur
- Department of Cancer Medicine, Peter MacCallum Cancer Centre, Victoria, Australia; Sir Peter MacCallum Department of Oncology, The University of Melbourne, Victoria, Australia
| | - C J McCormack
- Department of Dermatology, Peter MacCallum Cancer Centre, Victoria, Australia
| | - M Henderson
- Department of Surgery, Peter MacCallum Cancer Centre, Victoria, Australia; Department of Surgery, St Vincent's Hospital, Victoria, Australia
| | - R J Hicks
- Department of Surgery, St Vincent's Hospital, Victoria, Australia; Department of Cancer Imaging, Peter MacCallum Cancer Centre, Victoria, Australia
| | - M Shackleton
- Department of Cancer Medicine, Peter MacCallum Cancer Centre, Victoria, Australia; Cancer Treatment and Development Laboratory, Peter MacCallum Cancer Centre, Victoria, Australia; Sir Peter MacCallum Department of Oncology, The University of Melbourne, Victoria, Australia; Department of Pathology, The University of Melbourne, Victoria, Australia; Department of Oncology, Alfred Health, Victoria, Australia; Central Clinical School, Faculty of Medicine, Nursing and Allied Health, Monash University, Victoria, Australia.
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Alshammari K, Al-ezzi E, Lewin J, Salah S, Veitch Z, Malone E, Paris G, Mancini M, Zer A, Ahmad M, Beercroft R, Albiruni A. A prospective correlative trial of personalized patient-derived xenograft (PDX) as avatars for drug therapy in patients with metastatic or recurrent soft tissue sarcomas (STS). Ann Oncol 2019. [DOI: 10.1093/annonc/mdz283.051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Siva S, Bressel M, Loi S, Sandhu S, Tran B, Mooi J, Lewin J, Azad A, Colyer D, Shaw M, Chander S, Cuff K, Wood S, Lawrentschuk N, Murphy D, Pryor D. MA01.01 Safety of Pembrolizumab Combined with Stereotactic Ablative Body Radiotherapy (SABR) for Pulmonary Oligometastases. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.493] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Queen D, Lopez A, Shen Y, Samie F, Lewin J, Geskin L, Liu L. 438 Development and Validation of an 80-Gene UV Biomarker Panel for Stratification of Skin Cancer Risk. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abstract
During the 1994 crisis in Rwanda, a high incidence of full-thickness rectal prolapse was noted among the refugee children in the south-west of the country. The prolapses arose as a result of acute diarrhoeal illness superimposed on malnutrition and worm infestation. We used a modification of the Thiersch wire technique in 40 of these cases during two months working in a refugee camp. A catgut pursestring was tied around the anal margin under local, regional or general anaesthesia. This was effective in achieving short-term control of full-thickness prolapse until the underlying illness was corrected. Under the circumstances, no formal follow-up could be arranged; however, no complications were reported and only one patient presented with recurrence.
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Lewin J, Salah S, Amir E, Razak A. Tumour necrosis and clinical outcomes following neoadjuvant therapy in soft tissue sarcoma (STS). Ann Oncol 2017. [DOI: 10.1093/annonc/mdx387.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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15
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Chen TW, Loong H, Zer A, Barua R, Buttany J, Cusimano R, Liang YC, Chang CH, Iakobishvili Z, Razak A, Lewin J. Primary cardiac sarcoma (PCS): A multi-national retrospective review of clinical experience. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx387.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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16
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Vis DJ, Lewin J, Liao RG, Mao M, Andre F, Ward RL, Calvo F, Teh BT, Camargo AA, Knoppers BM, Sawyers CL, Wessels LFA, Lawler M, Siu LL, Voest E. Towards a global cancer knowledge network: dissecting the current international cancer genomic sequencing landscape. Ann Oncol 2017; 28:1145-1151. [PMID: 28453708 PMCID: PMC5406763 DOI: 10.1093/annonc/mdx037] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND While next generation sequencing has enhanced our understanding of the biological basis of malignancy, current knowledge on global practices for sequencing cancer samples is limited. To address this deficiency, we developed a survey to provide a snapshot of current sequencing activities globally, identify barriers to data sharing and use this information to develop sustainable solutions for the cancer research community. METHODS A multi-item survey was conducted assessing demographics, clinical data collection, genomic platforms, privacy/ethics concerns, funding sources and data sharing barriers for sequencing initiatives globally. Additionally, respondents were asked as to provide the primary intent of their initiative (clinical diagnostic, research or combination). RESULTS Of 107 initiatives invited to participate, 59 responded (response rate = 55%). Whole exome sequencing (P = 0.03) and whole genome sequencing (P = 0.01) were utilized less frequently in clinical diagnostic than in research initiatives. Procedures to identify cancer-specific variants were heterogeneous, with bioinformatics pipelines employing different mutation calling/variant annotation algorithms. Measurement of treatment efficacy varied amongst initiatives, with time on treatment (57%) and RECIST (53%) being the most common; however, other parameters were also employed. Whilst 72% of initiatives indicated data sharing, its scope varied, with a number of restrictions in place (e.g. transfer of raw data). The largest perceived barriers to data harmonization were the lack of financial support (P < 0.01) and bioinformatics concerns (e.g. lack of interoperability) (P = 0.02). Capturing clinical data was more likely to be perceived as a barrier to data sharing by larger initiatives than by smaller initiatives (P = 0.01). CONCLUSIONS These results identify the main barriers, as perceived by the cancer sequencing community, to effective sharing of cancer genomic and clinical data. They highlight the need for greater harmonization of technical, ethical and data capture processes in cancer sample sequencing worldwide, in order to support effective and responsible data sharing for the benefit of patients.
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Affiliation(s)
- D. J. Vis
- Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - J. Lewin
- Princess Margaret Cancer Centre, Toronto, Canada
| | - R. G. Liao
- Global Alliance for Genomics and Health, Broad Institute, Cambridge, USA
| | - M. Mao
- Yonsei Cancer Research Institute, Yonsei University College of Medicine, Seoul, South Korea
| | - F. Andre
- INSERM U981, Université Paris Sud, Institut Gustave Roussy, Villejuif, France
| | - R. L. Ward
- Research, University of Queensland, Brisbane, Australia
| | - F. Calvo
- Cancer Core Europe, Gustave Roussy, Villejuif, France
| | | | | | - B. M. Knoppers
- Centre of Genomics and Policy, McGill University, Montreal, Canada
| | - C. L. Sawyers
- Memorial Sloan Kettering Cancer Centre, New York, USA
| | - L. F. A. Wessels
- Netherlands Cancer Institute, Amsterdam, The Netherlands
- Department of Bioinformatics & Statistics, Delft University of Technology, Delft, The Netherlands
| | - M. Lawler
- Centre for Cancer Research and Cell Biology, Queen’s University Belfast, Belfast, UK
| | - L. L. Siu
- Princess Margaret Cancer Centre, Toronto, Canada
| | - E. Voest
- Netherlands Cancer Institute, Amsterdam, The Netherlands
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Lewin J, Debenham J, Oldmeadow D. Does a ‘bespoke’ bike-fit by a physiotherapist improve pain and disability in cyclists? A pilot study. J Sci Med Sport 2017. [DOI: 10.1016/j.jsams.2017.01.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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18
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Massard C, Soria J, Stathis A, Delord J, Awada A, Peters S, Lewin J, Bekradda M, Rezai K, Zeng Z, Azher H, Perez S, Siu L. A phase Ib trial with MK-8628/OTX015, a small molecule inhibitor of bromodomain (BRD) and extra-terminal (BET) proteins, in patients with selected advanced solid tumors. Eur J Cancer 2016. [DOI: 10.1016/s0959-8049(16)32609-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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19
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Bendell J, Tae Won K, Cheng Ean C, Yung-Jue B, Lee C, Desai J, Lewin J, Wallin J, Das Thakur M, Mwawasi G, Cha E, Infante J. LBA-01 Safety and efficacy of cobimetinib (cobi) and atezolizumab (atezo) in a Phase 1b study of metastatic colorectal cancer (mCRC). Ann Oncol 2016. [DOI: 10.1093/annonc/mdw237.01] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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20
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Lewin J, Dickinson M, Voskoboynik M, Collins M, Ritchie D, Toner G. High-dose chemotherapy with autologous stem cell transplantation in relapsed or refractory germ cell tumours: outcomes and prognostic variables in a case series of 17 patients. Intern Med J 2015; 44:771-8. [PMID: 24893627 DOI: 10.1111/imj.12486] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2013] [Accepted: 05/25/2014] [Indexed: 11/26/2022]
Abstract
BACKGROUND Optimal therapy for men relapsing after initial chemotherapy for germ cell tumours (GCT) is poorly defined. Both conventional dose salvage regimens and high-dose chemotherapy with autologous stem cell transplantation (HDCT-ASCT) have been utilised. AIMS To examine patients who received HDCT-ASCT for relapsed GCT within a single Australian centre. METHODS Records between 2000 and 2012 were analysed for baseline characteristics, treatment-related toxicity and survival. Prognosis at the time of HDCT-ASCT was classified according to the International Prognostic Factors Study Group (IPFSG). RESULTS Seventeen patients received HDCT-ASCT, median age 34 (21-46), with 41% having primary refractory disease and 53% with high/very high risk disease by IPFSG. The most common regimen utilised was paclitaxel/ifosfamide followed by high-dose carboplatin/etoposide (TI-CE; n = 12). The median duration of grade 4 (G4) neutropenia was 11 days (range 9-17) with febrile neutropenia in 90% resulting in four intensive care unit admissions (8%). Median duration of G4 thrombocytopenia was 10 days (range 8-19) requiring a median of two pooled platelets bags (range 0-33) per episode. Transplant-related mortality occurred in one patient (veno-occlusive disease). Twenty-seven per cent of HDCT-ASCT cycles were associated with grade 3 mucositis (median total parenteral nutrition days = 5 (0-23)). Two-year progression-free survival (PFS) and overall survival (OS) rates were 59% and 71%. Patients who received HDCT-ASCT as second or subsequent relapse fared worse than those treated with HDCT-ASCT at first relapse (hazard ratio 0.23 (95% confidence interval: 0.04, 1.37; P-value 0.09). Three-year OS for those who received TI-CE at first relapse was 90%. CONCLUSIONS HDCT-ASCT for relapsed GCT is effective with acceptable toxicity. There was encouraging PFS/OS, particularly in a poor-prognosis cohort.
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Affiliation(s)
- J Lewin
- DHMO, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia; Ontrac, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
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21
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Lewin J, Khamly KK, Young RJ, Mitchell C, Hicks RJ, Toner GC, Ngan SYK, Chander S, Powell GJ, Herschtal A, Te Marvelde L, Desai J, Choong PFM, Stacker SA, Achen MG, Ferris N, Fox S, Slavin J, Thomas DM. A phase Ib/II translational study of sunitinib with neoadjuvant radiotherapy in soft-tissue sarcoma. Br J Cancer 2014; 111:2254-61. [PMID: 25321190 PMCID: PMC4264446 DOI: 10.1038/bjc.2014.537] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2014] [Revised: 08/29/2014] [Accepted: 09/17/2014] [Indexed: 12/16/2022] Open
Abstract
Background: Preoperative radiotherapy (RT) is commonly used to treat localised soft-tissue sarcomas (STS). Hypoxia is an important determinant of radioresistance. Whether antiangiogenic therapy can ‘normalise' tumour vasculature, thereby improving oxygenation, remains unknown. Methods: Two cohorts were prospectively enrolled. Cohort A evaluated the implications of hypoxia in STS, using the hypoxic tracer 18F-azomycin arabinoside (FAZA-PET). In cohort B, sunitinib was added to preoperative RT in a dose-finding phase 1b/2 design. Results: In cohort A, 13 out of 23 tumours were hypoxic (FAZA-PET), correlating with metabolic activity (r2=0.85; P<0.001). Two-year progression-free (PFS) and overall (OS) survival were 61% (95% CI: 0.44–0.84) and 87% (95% CI: 0.74–1.00), respectively. Hypoxia was associated with radioresistance (P=0.012), higher local recurrence (Hazard ratio (HR): 10.2; P=0.02), PFS (HR: 8.4; P=0.02), and OS (HR: 41.4; P<0.04). In Cohort B, seven patients received sunitinib at dose level (DL): 0 (50 mg per day for 2 weeks before RT; 25 mg per day during RT) and two patients received DL: −1 (37.5 mg per day for entire period). Dose-limiting toxicities were observed in 4 out of 7 patients at DL 0 and 2 out of 2 patients at DL −1, resulting in premature study closure. Although there was no difference in PFS or OS, patients receiving sunitinib had higher local failure (HR: 8.1; P=0.004). Conclusion: In STS, hypoxia is associated with adverse outcomes. The combination of sunitinib with preoperative RT resulted in unacceptable toxicities, and higher local relapse rates.
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Affiliation(s)
- J Lewin
- Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia
| | - K K Khamly
- Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia
| | - R J Young
- Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia
| | - C Mitchell
- Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia
| | - R J Hicks
- 1] Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia [2] The University of Melbourne, St Vincent's Hospital Campus, Fitzroy, Victoria, Australia
| | - G C Toner
- 1] Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia [2] The University of Melbourne, St Vincent's Hospital Campus, Fitzroy, Victoria, Australia
| | - S Y K Ngan
- Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia
| | - S Chander
- Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia
| | - G J Powell
- 1] Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia [2] Department of Orthopaedics, St. Vincent's Hospital, Fitzroy, Victoria, Australia [3] Department of Surgery, The University of Melbourne, St. Vincent's Hospital, Fitzroy, Victoria, Australia
| | - A Herschtal
- Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia
| | - L Te Marvelde
- Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia
| | - J Desai
- Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia
| | - P F M Choong
- 1] Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia [2] Department of Orthopaedics, St. Vincent's Hospital, Fitzroy, Victoria, Australia [3] Department of Surgery, The University of Melbourne, St. Vincent's Hospital, Fitzroy, Victoria, Australia
| | - S A Stacker
- 1] Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia [2] Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
| | - M G Achen
- 1] Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia [2] Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
| | - N Ferris
- Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia
| | - S Fox
- Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia
| | - J Slavin
- The University of Melbourne, St Vincent's Hospital Campus, Fitzroy, Victoria, Australia
| | - D M Thomas
- 1] Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia [2] The University of Melbourne, St Vincent's Hospital Campus, Fitzroy, Victoria, Australia [3] The Kinghorn Cancer Centre, Garvan Institute of Medical Research, 370 Victoria Street, Darlinghurst, New South Wales 2010, Australia
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Abstract
Giant cell tumor of bone (GCTB) is an osteolytic, usually benign neoplasm characterized by infiltration with osteoclast-like giant cells, and the osteoclast differentiation factor receptor activator of nuclear factor kappa-B ligand (RANKL) is heavily involved in its pathogenesis. Denosumab belongs to a new class of drugs that inhibit RANKL. Prior to denosumab, multimodality treatment in refractory, recurrent and metastatic GCTB has shown variable results. Recent phase II data have demonstrated denosumab's activity with regard to disease and symptom control, without significant adverse effects. On the basis of this data, the FDA approved denosumab for the treatment of patients whose GCTB is unresectable, or when surgery is likely to result in severe morbidity. Ongoing questions remain, including the optimal scheduling, patient selection, use in the adjuvant setting and long-term toxicity concerns.
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Affiliation(s)
- J Lewin
- Peter MacCallum Cancer Centre, Melbourne, Australia.
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Sutak R, Hrdy I, Dolezal P, Cabala R, Sedinová M, Lewin J, Harant K, Müller M, Tachezy J. Secondary alcohol dehydrogenase catalyzes the reduction of exogenous acetone to 2-propanol in Trichomonas vaginalis. FEBS J 2012; 279:2768-80. [PMID: 22686835 DOI: 10.1111/j.1742-4658.2012.08661.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Secondary alcohols such as 2-propanol are readily produced by various anaerobic bacteria that possess secondary alcohol dehydrogenase (S-ADH), although production of 2-propanol is rare in eukaryotes. Specific bacterial-type S-ADH has been identified in a few unicellular eukaryotes, but its function is not known and the production of secondary alcohols has not been studied. We purified and characterized S-ADH from the human pathogen Trichomonas vaginalis. The kinetic properties and thermostability of T. vaginalis S-ADH were comparable with bacterial orthologues. The substantial activity of S-ADH in the parasite's cytosol was surprising, because only low amounts of ethanol and trace amounts of secondary alcohols were detected as metabolic end products. However, S-ADH provided the parasite with a high capacity to scavenge and reduce external acetone to 2-propanol. To maintain redox balance, the demand for reducing power to metabolize external acetone was compensated for by decreased cytosolic reduction of pyruvate to lactate and by hydrogenosomal metabolism of pyruvate. We speculate that hydrogen might be utilized to maintain cytosolic reducing power. The high activity of Tv-S-ADH together with the ability of T. vaginalis to modulate the metabolic fluxes indicate efficacious metabolic responsiveness that could be advantageous for rapid adaptation of the parasite to changes in the host environment.
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Affiliation(s)
- Robert Sutak
- Department of Parasitology, Faculty of Science, Charles University in Prague, Vinicna 7, Prague, Czech Republic
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Abstract
Fluvial landforms and sediments can be used to reconstruct past hydrological conditions over different time scales once allowance has been made for tectonic, base-level and human complications. Field stratigraphic evidence is explored here at three time scales: the later Pleistocene, the Holocene, and the historical and instrumental period. New data from a range of field studies demonstrate that Croll-Milankovitch forcing, Dansgaard-Oeschger and Heinrich events, enhanced monsoon circulation, millennial- to centennial-scale climate variability within the Holocene (probably associated with solar forcing and deep ocean circulation) and flood-event variability in recent centuries can all be discerned in the fluvial record. Although very significant advances have been made in river system and climate change research in recent years, the potential of fluvial palaeohydrology has yet to be fully realized, to the detriment of climatology, public health, resource management and river engineering.
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Affiliation(s)
- M G Macklin
- Institute of Geography and Earth Sciences, Aberystwyth University, Penglais, Ceredigion SY23 3DB, UK.
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25
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Lewin J, Haydon A, McKendrick J, Millar J, Schwarz M, Shapiro J. 7168 POSTER Health Related Quality of Life (QOL) Assessment In Stage 1 Semlnomatous Germ Cell Tumour Patients Treated With Either Adjuvant Carboplatin Chemotherapy, Adjuvant Radiotherapy or High Intensity Chemotherapy. Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)72083-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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27
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Einstein D, Wessels B, Bangert B, Lewin J, Nelson A, Fu P, Cohen M, Sagar S, Zhang Y, Maciunas R. Phase II Trial Combining Conventional Radiotherapy with Stereotactic Radiosurgery to High-risk Tumor Regions as Determined by MR Spectroscopy for Patients with Glioblastoma Multiforme. Int J Radiat Oncol Biol Phys 2009. [DOI: 10.1016/j.ijrobp.2009.07.299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Harsum S, Mann S, Clatworthy I, Lewin J, Little B. An investigation of intraocular lens damage and foreign bodies using an injectable hydrophilic acrylic lens implant. Eye (Lond) 2009; 24:152-7. [DOI: 10.1038/eye.2009.3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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29
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Salamin L, Ghata J, Lewin J, Azérad E. Influence de l'absorption de certaines graisses alimentaires sur les lipides et lipoprotéines du sang. Ann Nutr Metab 2008. [DOI: 10.1159/000174433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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30
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Ghata J, Salamin L, Lewin J, Azérad E. Action du glucose sur l’hyperlipémie alimentaire chez le sujet normal et le diabétique. Ann Nutr Metab 2008. [DOI: 10.1159/000174738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Singh M, Davenport A, Clatworthy I, Lewin J, Deroide F, Hubbard V, Rustin MHA. A follow-up of four cases of nephrogenic systemic fibrosis: is gadolinium the specific trigger? Br J Dermatol 2008; 158:1358-62. [PMID: 18363754 DOI: 10.1111/j.1365-2133.2008.08506.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We originally reported four patients with nephrogenic systemic fibrosis (NSF) in the British Journal of Dermatology in 2003, and now present an update of their outcome. All four patients (three females and one male) presented within a six month period at our institution, and had received gadolinium contrast agents prior to disease onset. Two patients with functioning renal transplants had limited cutaneous disease, two patients maintained on haemodialysis had more severe disease and died one year after disease onset. Gadolinium deposition was demonstrated in lesional skin of one patient using electron microscopy and energy dispersive spectroscopy.
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Affiliation(s)
- M Singh
- Department of Dermatology, The Royal Free Hospital, Pond Street, London NW3 2QG, UK.
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Affiliation(s)
- J. Lewin
- a Lecturer and Research Officer in Geography , University College of Wales , Aberystwyth
| | - M. J. C. Weir
- a Lecturer and Research Officer in Geography , University College of Wales , Aberystwyth
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Lewin J, Plum A, Hildmann T, Rujan T, Eckhardt F, Liebenberg V, Lofton-Day C, Wasserkort R. Comparative DNA methylation analysis in normal and tumour tissues and in cancer cell lines using differential methylation hybridisation. Int J Biochem Cell Biol 2007; 39:1539-50. [PMID: 17499000 DOI: 10.1016/j.biocel.2007.03.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2006] [Revised: 02/20/2007] [Accepted: 03/07/2007] [Indexed: 12/31/2022]
Abstract
Immortalized human cancer cell lines are widely used as tools and model systems in cancer research but their authenticity with regard to primary tissues remains a matter of debate. We have used differential methylation hybridisation to obtain comparative methylation profiles from normal and tumour tissues of lung and colon, and permanent cancer cell lines originally derived from these tissues. Average methylation differences only larger than 25% between sample groups were considered for the profiles and with this criterion approximately 1000 probesets, around 2% of the sites represented on the array, indicated differential methylation between normal lung and primary lung cancer tissue, and approximately 700 probesets between normal colon and primary colon cancer tissue. Both hyper- and hypomethylation was found to differentiate normal tissue from cancer tissue. The profiles obtained from these tissue comparisons were found to correspond largely to those from the corresponding cancer cell lines, indicating that the cell lines represent the methylation pattern of the primary tissue rather well. Moreover, the cancer specific profiles were found to be very similar for the two tumour types studied. Tissue specific differential methylation between lung and colon tissues, in contrast, was found to be preserved to a larger extent only in the malignant tissue, but was not preserved well in the cancer cell lines studied. Overall, our data therefore provide further evidence that permanent cell lines are good model systems for cancer specific methylation patterns, but deviate with regard to tissue-specific methylation.
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Affiliation(s)
- Joern Lewin
- Epigenomics AG, Kleine Präsidentenstrasse 1, 10178 Berlin, Germany
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35
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Eckhardt F, Lewin J, Cortese R, Rakyan VK, Attwood J, Burger M, Burton J, Cox TV, Davies R, Down TA, Haefliger C, Horton R, Howe K, Jackson DK, Kunde J, Koenig C, Liddle J, Niblett D, Otto T, Pettett R, Seemann S, Thompson C, West T, Rogers J, Olek A, Berlin K, Beck S. DNA methylation profiling of human chromosomes 6, 20 and 22. Nat Genet 2006; 38:1378-85. [PMID: 17072317 PMCID: PMC3082778 DOI: 10.1038/ng1909] [Citation(s) in RCA: 933] [Impact Index Per Article: 51.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2006] [Accepted: 09/18/2006] [Indexed: 12/17/2022]
Abstract
DNA methylation is the most stable type of epigenetic modification modulating the transcriptional plasticity of mammalian genomes. Using bisulfite DNA sequencing, we report high-resolution methylation profiles of human chromosomes 6, 20 and 22, providing a resource of about 1.9 million CpG methylation values derived from 12 different tissues. Analysis of six annotation categories showed that evolutionarily conserved regions are the predominant sites for differential DNA methylation and that a core region surrounding the transcriptional start site is an informative surrogate for promoter methylation. We find that 17% of the 873 analyzed genes are differentially methylated in their 5' UTRs and that about one-third of the differentially methylated 5' UTRs are inversely correlated with transcription. Despite the fact that our study controlled for factors reported to affect DNA methylation such as sex and age, we did not find any significant attributable effects. Our data suggest DNA methylation to be ontogenetically more stable than previously thought.
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MESH Headings
- 5' Untranslated Regions
- Adult
- Age Factors
- Aged
- Animals
- Chromosomes, Human, Pair 20/genetics
- Chromosomes, Human, Pair 20/metabolism
- Chromosomes, Human, Pair 22/genetics
- Chromosomes, Human, Pair 22/metabolism
- Chromosomes, Human, Pair 6/genetics
- Chromosomes, Human, Pair 6/metabolism
- CpG Islands
- DNA Methylation
- Epigenesis, Genetic
- Evolution, Molecular
- Female
- Humans
- Male
- Mice
- Middle Aged
- Organ Specificity
- Promoter Regions, Genetic
- Sex Characteristics
- Species Specificity
- Transcription, Genetic
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Affiliation(s)
- Florian Eckhardt
- Epigenomics AG, Kleine Präsidentstrasse 1, 10178 Berlin, Germany
| | - Joern Lewin
- Epigenomics AG, Kleine Präsidentstrasse 1, 10178 Berlin, Germany
| | - Rene Cortese
- Epigenomics AG, Kleine Präsidentstrasse 1, 10178 Berlin, Germany
| | - Vardhman K. Rakyan
- Wellcome Trust Sanger Institute, Hinxton, Cambridge, CB10 1SA, United Kingdom
| | - John Attwood
- Wellcome Trust Sanger Institute, Hinxton, Cambridge, CB10 1SA, United Kingdom
| | - Matthias Burger
- Epigenomics AG, Kleine Präsidentstrasse 1, 10178 Berlin, Germany
| | - John Burton
- Wellcome Trust Sanger Institute, Hinxton, Cambridge, CB10 1SA, United Kingdom
| | - Tony V. Cox
- Wellcome Trust Sanger Institute, Hinxton, Cambridge, CB10 1SA, United Kingdom
| | - Rob Davies
- Wellcome Trust Sanger Institute, Hinxton, Cambridge, CB10 1SA, United Kingdom
| | - Thomas A. Down
- Wellcome Trust Sanger Institute, Hinxton, Cambridge, CB10 1SA, United Kingdom
| | | | - Roger Horton
- Wellcome Trust Sanger Institute, Hinxton, Cambridge, CB10 1SA, United Kingdom
| | - Kevin Howe
- Wellcome Trust Sanger Institute, Hinxton, Cambridge, CB10 1SA, United Kingdom
| | - David K. Jackson
- Wellcome Trust Sanger Institute, Hinxton, Cambridge, CB10 1SA, United Kingdom
| | | | - Christoph Koenig
- Epigenomics AG, Kleine Präsidentstrasse 1, 10178 Berlin, Germany
| | - Jennifer Liddle
- Wellcome Trust Sanger Institute, Hinxton, Cambridge, CB10 1SA, United Kingdom
| | - David Niblett
- Wellcome Trust Sanger Institute, Hinxton, Cambridge, CB10 1SA, United Kingdom
| | - Thomas Otto
- Epigenomics AG, Kleine Präsidentstrasse 1, 10178 Berlin, Germany
| | - Roger Pettett
- Wellcome Trust Sanger Institute, Hinxton, Cambridge, CB10 1SA, United Kingdom
| | - Stefanie Seemann
- Epigenomics AG, Kleine Präsidentstrasse 1, 10178 Berlin, Germany
| | | | - Tony West
- Wellcome Trust Sanger Institute, Hinxton, Cambridge, CB10 1SA, United Kingdom
| | - Jane Rogers
- Wellcome Trust Sanger Institute, Hinxton, Cambridge, CB10 1SA, United Kingdom
| | - Alex Olek
- Epigenomics AG, Kleine Präsidentstrasse 1, 10178 Berlin, Germany
| | - Kurt Berlin
- Epigenomics AG, Kleine Präsidentstrasse 1, 10178 Berlin, Germany
| | - Stephan Beck
- Wellcome Trust Sanger Institute, Hinxton, Cambridge, CB10 1SA, United Kingdom
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Lewin J. Acute and transient psychotic disorders and puerperal psychosis. Br J Psychiatry 2006; 189:468; author reply 468. [PMID: 17077446 DOI: 10.1192/bjp.189.5.468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Kies MS, Garden AS, Holsinger C, Papadimitrakopoulou V, El-Naggar AK, Gillaspy K, Lewin J, Lu C, Villalobos S, Glisson BS. Induction chemotherapy (CT) with weekly paclitaxel, carboplatin, and cetuximab for squamous cell carcinoma of the head and neck (HN). J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.5520] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
5520 Background: To further determine the potential efficacy of combining cetuximab with chemotherapy, we conducted a phase II trial with induction CT consisting of 6 weekly cycles of paclitaxel 135 mg/m2, carboplatin auc 2 and cetuximab 400 mg/m2 week 1 then 250 mg/m2 weekly. Methods: Patients (pts) were treatment-naïve with staging T0–4, N2b/c/3, M0; PS 0/1; with any HN primary site; and evaluated for clinico-radiographic complete response (CR). Pathway signaling biomarkers and genomic profiling are planned. Following CT, patients underwent “risk-based” local therapy. Choice of surgery ± postoperative radiotherapy (RT), RT, or concomitant chemoRT was based upon tumor stage and site at diagnosis. Results: Patient entry (2/05–11/05) has concluded with 47 patients (33 m, 14 f), median age 53 years and range 21–78. Two patients are too early for response analysis. Oropharynx was the dominant primary site, N = 42, with staging: Tx N2b - 4, Tx N3 - 1; T1 N2b - 5, T1 N2c - 6, T1 N3 - 3; T2 Nx - 1, T2 N2b - 10, T2 N3 - 3; T3 N2b - 5, T3 N2c - 3, T3 N3 - 1; T4 N2b - 2 and T4 N2c - 3. Toxicity was acceptable. Sixteen (34%) pts had grade 3/4 leukopenia; 22 (47%) grade 3 folliculitis (median 5 cycles of cetuximab administered); and 2 (4%) serious hypersensitivity. All 41 evaluable pts achieved a response in the primary site, 7 (17%) PR and 34 (83%) CR. Forty-three of 44 evaluable patients achieved a nodal response, 31 (70%) PR and 12 (27%) CR. Overall, 11 of 45 (24%) pts were disease-free after CT. At this early point, 3 pts have had 4 tumor recurrences, 2 local and 2 distant. Conclusions: CT administered over 6 wks, with cetuximab, was feasible and highly active with all patients achieving a tumor response. Severe skin rash affected nearly 50% of pts. Preliminary survival data, and correlation of surrogate biomarkers with tumor response are to be presented. Supported by: Bristol Myers Squibb Oncology and Imclone Systems Grant #CS 2004–00011435 WC. [Table: see text]
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Affiliation(s)
- M. S. Kies
- UT M. D. Anderson Cancer Center, Houston, TX
| | | | | | | | | | - K. Gillaspy
- UT M. D. Anderson Cancer Center, Houston, TX
| | - J. Lewin
- UT M. D. Anderson Cancer Center, Houston, TX
| | - C. Lu
- UT M. D. Anderson Cancer Center, Houston, TX
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Osborn NK, Zou H, Molina JR, Lesche R, Lewin J, Lofton-Day C, Klatt KK, Harrington JJ, Burgart LJ, Ahlquist DA. Aberrant methylation of the eyes absent 4 gene in ulcerative colitis-associated dysplasia. Clin Gastroenterol Hepatol 2006; 4:212-8. [PMID: 16469682 DOI: 10.1016/j.cgh.2005.11.009] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS This study explored the eyes absent 4 (EYA4) gene promoter methylation in noncolitic colorectal tissues and assessed its discrimination for neoplasia in chronic ulcerative colitis (CUC). METHODS The methylation status of noncolitic specimens was confirmed by direct bisulfite sequencing. Methylation-specific polymerase chain reaction (MSP) primers were designed to evaluate colorectal tissues, including 50 noncolitic patients comprising 24 normal epithelia, 14 polyps, and 12 cancers. The assay was tested on tissues from 67 CUC patients including 31 surveillance neoplasia-positive patients and nonneoplastic controls including 22 CUC surveillance-negative and 14 CUC short-disease duration. Remote colonic tissue was included from each of 27 of the 31 CUC neoplasia cases. The expression of EYA4 was quantified in cell lines by use of reverse-transcription polymerase chain reaction. RESULTS Within noncolitic tissues, bisulfite sequencing showed EYA4 promoter hypermethylation in 80% (8 of 10) of colorectal cancers but in none (0 of 9) of the normal tissues. MSP was positive in 81% (21 of 26) of cancers and polyps and in only 4% (1 of 14) of normal mucosa. In CUC, MSP was positive in 81% (25 of 31) of neoplastic cases but in none (0 of 36) of the nonneoplastic controls. RNA expression was decreased in methylated compared with unmethylated cell lines (P < .001). Treatment with 5-Aza-2'-deoxycytidine (DAC)/Trichostatin (TSA) increased the overall messenger RNA expression (P = .005). CONCLUSIONS The EYA4 gene promoter is hypermethylated commonly in sporadic and colitic neoplasia and may be associated with gene silencing. EYA4 methylation represents a candidate marker for CUC surveillance.
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Affiliation(s)
- Neal K Osborn
- Division of Gastroenterology and Hepatology, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
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Affiliation(s)
- J Lewin
- West Norfolk and King's Lynn General Hospital
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Milowsky MI, Galsky M, Lewin J, Rozario CP, Owens L, Marshall T, Nanus D, Webb IJ, Scher HI. Phase 1/2 dose escalation trial of the prostate-specific membrane antigen (PSMA)-targeted immunoconjugate MLN2704 in patients with progressive metastatic castration-resistant prostate cancer (CRPC). J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.4615] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- M. I. Milowsky
- NY Presbyterian Hosp, New York, NY; Memorial Sloan-Kettering Cancer Ctr, New York, NY; Millennium Pharmaceuticals, Cambridge, MA
| | - M. Galsky
- NY Presbyterian Hosp, New York, NY; Memorial Sloan-Kettering Cancer Ctr, New York, NY; Millennium Pharmaceuticals, Cambridge, MA
| | - J. Lewin
- NY Presbyterian Hosp, New York, NY; Memorial Sloan-Kettering Cancer Ctr, New York, NY; Millennium Pharmaceuticals, Cambridge, MA
| | - C. P. Rozario
- NY Presbyterian Hosp, New York, NY; Memorial Sloan-Kettering Cancer Ctr, New York, NY; Millennium Pharmaceuticals, Cambridge, MA
| | - L. Owens
- NY Presbyterian Hosp, New York, NY; Memorial Sloan-Kettering Cancer Ctr, New York, NY; Millennium Pharmaceuticals, Cambridge, MA
| | - T. Marshall
- NY Presbyterian Hosp, New York, NY; Memorial Sloan-Kettering Cancer Ctr, New York, NY; Millennium Pharmaceuticals, Cambridge, MA
| | - D. Nanus
- NY Presbyterian Hosp, New York, NY; Memorial Sloan-Kettering Cancer Ctr, New York, NY; Millennium Pharmaceuticals, Cambridge, MA
| | - I. J. Webb
- NY Presbyterian Hosp, New York, NY; Memorial Sloan-Kettering Cancer Ctr, New York, NY; Millennium Pharmaceuticals, Cambridge, MA
| | - H. I. Scher
- NY Presbyterian Hosp, New York, NY; Memorial Sloan-Kettering Cancer Ctr, New York, NY; Millennium Pharmaceuticals, Cambridge, MA
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Wacker F, Hillenbrand C, Zhang S, Elgort D, Duerk J, Lewin J, Wolf KJ. MR-gestützte Platzierung von Nierenarterien-Stents: Vergleich zweier Katheterverfolgungstechniken. ROFO-FORTSCHR RONTG 2005. [DOI: 10.1055/s-2005-868358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Wacker F, Vogt S, Khamene A, Sauer F, Duerk J, Lewin J, Hillenbrand C, Wolf KJ. MR-basierte augmentierte Realität für perkutane Biopsien. ROFO-FORTSCHR RONTG 2005. [DOI: 10.1055/s-2005-867852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Maes RM, Lewin J, Duerk J, Wacker F. Eine Doppelkontrastmethode für MRT-gestützte vaskuläre Interventionen: Kombinierter Verwendung eines blood-pool Kontrastmittels und Kohlendioxid (CO2). ROFO-FORTSCHR RONTG 2005. [DOI: 10.1055/s-2005-867728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Pyne-Daly P, Lewin J, Kieran E, Craddock K, Minogue M, Ledwidge M, McDonald K. 1223: Cognitive Behavioural Psychotherapy a Useful Adjuvant for the Management of Anxiety and Depression in Cardiac Rehabilitation and Heart Failure Patients. Eur J Cardiovasc Nurs 2003. [DOI: 10.1177/147451510300200123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
| | - J. Lewin
- St. Vincent's University Hospital, Ireland
| | - E. Kieran
- St. Vincent's University Hospital, Ireland
| | | | - M. Minogue
- St. Vincent's University Hospital, Ireland
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Abstract
OBJECTIVE To investigate the effect of progesterone on multidrug-resistant urothelial cell lines, as the failure of intravesical chemotherapeutic drugs is often caused by multidrug resistance (MDR), mediated by the drug efflux pump P-glycoprotein (PGP), the function of which can be down-regulated by various compounds including steroid hormones. MATERIALS AND METHODS Two urothelial cell lines (RT112S and MGH-U1S) and their MDR sublines (RT112R, to cisplatin; and MGH-U1R, a cell line expressing PGP) were used to assess the cytotoxic effects of progesterone, epirubicin and their combination. Cytotoxicity was assessed using a tetrazolium-based assay and in situ confocal microscopy. RESULTS Cell lines sensitive to epirubicin (MGH-U1S, RT112S and RT112R) required a much lower dose of epirubicin to kill half the cells than did the MDR cell line. Progesterone was intrinsically cytotoxic to all cell lines with little difference among them. Combined therapy had no cumulative effect on epirubicin-sensitive cell lines, but reversed MDR in the MGHU1R cell line, both assessed by confocal microscopy and by the tetrazolium assay. CONCLUSIONS Progesterone can reverse MDR in urothelial cells in vitro. This, combined with its effects on cell differentiation and apoptosis, together with its safety and tolerability compared to other MDR agents, suggests it may be a valuable adjunct to intravesical chemotherapy.
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Affiliation(s)
- J Lewin
- MDR Research Group, Department of Urology, Southampton University Hospital, Southampton, UK.
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Lewin J. Preparation and Properties of Serum and Plasma Proteins. XXX. Crystalline Derivatives of Human Serum Albumin and of Certain Other Proteins1a,b. J Am Chem Soc 2002. [DOI: 10.1021/ja01152a104] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Luo ZJ, King RHM, Lewin J, Thomas PK. Effects of nonenzymatic glycosylation of extracellular matrix components on cell survival and sensory neurite extension in cell culture. J Neurol 2002; 249:424-31. [PMID: 11967647 DOI: 10.1007/s004150200033] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Diabetic sensory polyneuropathy is characterized by a distal axonopathy of dying-back type. It is accompanied by a failure of axonal regeneration, in which nonenzymatic glycosylation (glycation) of the extracellular matrix may be involved. In the present study, the effects of glycation of collagen IV and laminin, major components of basal lamina, on neuron survival and neurite extension were investigated in tissue culture. Fast glycation of laminin was achieved by incubation with glycolaldehyde and glycation of collagen IV by incubation with glucose. The degree of glycation was estimated by fluorescence analysis. Glycated or nonglycated laminin or collagen IV were used as substrates for culture of dorsal root ganglion (DRG) neurons from neonatal rats. Cultures were assessed for the proportion of cells attaching to the substrate, surviving and bearing neurites. Cell attachment and the proportion bearing neurites were significantly reduced on collagen IV glycated for 2 weeks, but survival was only affected by glycation for 4 or 5 weeks. All 3 parameters were significantly reduced on glycated compared with unglycated laminin. Glycation of both laminin and collagen IV produced considerable morphological differences in the cultured neurons on scanning electron microscopy. Dissociated DRG neurons from adult animals with streptozotocin-induced diabetes cultured on nonglycated substrates survived less well and produced fewer neurites. Glycation of collagen IV and laminin thus affects neuronal survival, neurite production and cell morphology, and diabetes affects both the survival of sensory neurons in culture and their ability to extend neurites.
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Affiliation(s)
- Z J Luo
- Department of Clinical Neurosciences, Royal Free & University College Medical School, Rowland Hill Street Campus, London NW3 2PF, UK
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Abstract
OBJECTIVES We aimed to assess the nature and risk of sexual dysfunction in men after treatment for testicular cancer. METHOD Systematic review of sexual dysfunction in men treated for testicular cancer. The odds ratio or proportions of subjects with reduced sexual drive, erectile dysfunction or orgasmic/ejaculatory dysfunction was calculated. RESULTS A detailed review of 79 of the 227 citations was conducted. The highest level of evidence found, were controlled studies. Six controlled studies examined sexual function in 709 patients after they had received treatment. Seven uncontrolled studies examined sexual function in 337 subjects before and after treatment for testicular cancer. Most studies were limited by low response rates, use of unvalidated questionnaires and inclusion of a variety of treatment modalities. Few assessed psychological function and none examined its possible interaction with sexual dysfunction. Meta-analysis of the controlled studies indicated significantly reduced or absent orgasm (OR=4.62, 95% CI=2.47-8.63) together with erectile (OR=2.47, 95% CI=1.54-3.96) and ejaculatory dysfunction (OR=28.57, 95% CI=1.75-464.78) up to 2 years after treatment. Effects on sexual function were less consistent in the uncontrolled studies. CONCLUSIONS The controlled studies indicate that sexual dysfunction persists for up to 2 years after treatment. However, better evidence is needed in studies that control for the impact of the testicular cancer, the treatment modality and psychological reactions to both.
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Affiliation(s)
- I Nazareth
- Department of Primary Care and Population Sciences, Royal Free and University College London Medical School, University College London, Rowland Hill Street, London NW3 2PF, UK.
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Flask C, Elgort D, Wong E, Shankaranarayanan A, Lewin J, Wendt M, Duerk JL. A method for fast 3D tracking using tuned fiducial markers and a limited projection reconstruction FISP (LPR-FISP) sequence. J Magn Reson Imaging 2001; 14:617-27. [PMID: 11747015 DOI: 10.1002/jmri.1227] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
This work demonstrates the feasibility of using wireless, tuned fiducial markers with a limited projection reconstruction-fast imaging with steady-state free precession sequence (LPR-FISP) to accurately obtain tracking information necessary for interactive scan plane selection in magnetic resonance imaging (MRI). The position and orientation of a rigid interventional device can be uniquely determined from the 3D coordinates of three fiducial markers mounted in a known configuration on the device. Three fiducial markers were tuned to the proton resonant frequency in a 0.2T open MR scanner and mounted to the surface of a cylindrical water phantom. An LPR-FISP sequence was developed to suppress the water phantom signal while preserving that of the fiducial markers through a nonselective low-tip-angle excitation and a dephaser gradient applied prior to data acquisition. A localization algorithm was developed to accurately calculate the 3D coordinates of the fiducial markers using four LPR-FISP projections in two orthogonal scan planes. The sequence repetition time (TR = 21 msec) and the limited projection set resulted in fast LPR-FISP coordinate acquisition times of approximately 170 msec with an accuracy (max error) of 3 mm on a 0.2T MR system. This fast, accurate tracking method provides the fundamental technology for interactive MRI scan plane definition for rigid interventional devices without the need for stereotactic cameras or reference frames.
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Affiliation(s)
- C Flask
- Case Western Reserve University, University Hospital of Cleveland, Department of Radiology, Cleveland, Ohio 44106, USA
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Chen AY, Frankowski R, Bishop-Leone J, Hebert T, Leyk S, Lewin J, Goepfert H. The development and validation of a dysphagia-specific quality-of-life questionnaire for patients with head and neck cancer: the M. D. Anderson dysphagia inventory. Arch Otolaryngol Head Neck Surg 2001; 127:870-6. [PMID: 11448365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
OBJECTIVE To design a reliable and validated self-administered questionnaire whose purpose is to assess dysphagia's effects on the quality of life (QOL) of patients with head and neck cancer. DESIGN Cross-sectional survey study. METHODS Focus groups were convened for questionnaire development and design. The M. D. Anderson Dysphagia Inventory (MDADI) included global, emotional, functional, and physical subscales. One hundred consecutive adult patients with a neoplasm of the upper aerodigestive tract who underwent evaluation by our Speech Pathology team completed the MDADI and the Medical Outcomes Study 36-Item Short Form Health Survey (SF-36). Speech pathologists completed the Performance Status Scale for each patient. Validity and reliability properties were calculated. Analysis of variance was used to assess how well the MDADI discriminated between groups of patients. RESULTS The internal consistency reliability of the MDADI was calculated using the Cronbach alpha coefficient. The Cronbach alpha coefficients of the MDADI subscales ranged from 0.85 to 0.93. Test-retest reliability coefficients of the subscales ranged from 0.69 to 0.88. Spearman correlation coefficients between the MDADI subscales and the SF-36 subscales demonstrated construct validity. Patients with primary tumors of the oral cavity and oropharynx had significantly greater swallowing disability with an adverse impact on their QOL compared with patients with primary tumors of the larynx and hypopharynx (P<.001). Patients with a malignant lesion also had significantly greater disability than patients with a benign lesion (P<.001). CONCLUSIONS The MDADI is the first validated and reliable self-administered questionnaire designed specifically for evaluating the impact of dysphagia on the QOL of patients with head and neck cancer. Standardized questionnaires that measure patients' QOL offer a means for demonstrating treatment impact and improving medical care. The development and validation of the MDADI and its use in prospective clinical trials allow for better understanding of the impact of treatment of head and neck cancer on swallowing and of swallowing difficulty on patients' QOL.
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Affiliation(s)
- A Y Chen
- Department of Head and Neck Surgery, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Campus Box 441, Houston, TX 77030, USA
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