26
|
Olivia Mullen C, Shepherd J, Campbell B, Feinn R. Opioid Prescription Practices in the Postpartum Period. J Am Coll Surg 2020. [DOI: 10.1016/j.jamcollsurg.2020.07.297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
27
|
Crosby EJ, Acharya C, Rabiola C, Muller WJ, Chodosh LA, Broadwater G, Shepherd J, Hollern D, He X, Perou CM, Ashby BK, Vincent BG, Morse MA, Lyerly HK, Hartman ZC. Abstract 904: Stimulation and expansion of oncogene-reactive tumor infiltrating T cells through combined Ad-HER2Δ16 vaccination and anti-PD1 enable anti-tumor responses against established HER2 BC. Cancer Res 2020. [DOI: 10.1158/1538-7445.am2020-904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Despite promising advances, overcoming immune suppression and driving productive immune responses in the tumor microenvironment remains a significant challenge. Using a spontaneous breast cancer model, we found that vaccination targeting HER2d16, a highly expressed driver of oncogenicity and HER2-therapeutic resistance, elicited significant anti-tumor responses. In contrast, vaccines targeting a non-driver tumor-specific antigen (GFP) or unique non-driver tumor neoepitopes had no impact on tumor occurrence or progression. While vaccine-induced HER2-specific CD8+ T cells were essential for responses, tumors treated therapeutically with a vaccine alone ultimately progressed. However, long-term tumor control and complete tumor regression was only achieved when vaccine was combined with immune-checkpoint blockade (anti-PD1). Single cell RNAsequencing of tumor-infiltrating T cells (TILs) revealed that while vaccination expanded CD8 T cells within the tumor, only the combination of vaccine with anti-PD1 therapy induced a tumor rejection activation signature that was identified in the expanded T cell clones. We go on to use the single cell data to clone and reexpress the TCRs from expanded TILs from vaccinated mice and show that they are HER2-reactive. This data conclusively demonstrates the efficacy of this vaccination strategy in expanding tumor rejection T cells and supports its further evaluation in an ongoing Phase II trial (NCT03632941). The workflow used to identify and clone expanded, tumor specific T cells has broad potential applications across tumor types and treatment platforms.
Citation Format: Erika J. Crosby, Chaitanya Acharya, Christopher Rabiola, William J. Muller, Lewis A. Chodosh, Gloria Broadwater, Jonathan Shepherd, Daniel Hollern, Xiaping He, Charles M. Perou, Benjamin K. Ashby, Benjamin G. Vincent, Michael A. Morse, Herbert K. Lyerly, Zachary C. Hartman. Stimulation and expansion of oncogene-reactive tumor infiltrating T cells through combined Ad-HER2Δ16 vaccination and anti-PD1 enable anti-tumor responses against established HER2 BC [abstract]. In: Proceedings of the Annual Meeting of the American Association for Cancer Research 2020; 2020 Apr 27-28 and Jun 22-24. Philadelphia (PA): AACR; Cancer Res 2020;80(16 Suppl):Abstract nr 904.
Collapse
|
28
|
Ma Y, Shepherd J, Zhao D, Bollu LR, Tahaney WM, Hill J, Zhang Y, Mazumdar A, Brown PH. SOX9 Is Essential for Triple-Negative Breast Cancer Cell Survival and Metastasis. Mol Cancer Res 2020; 18:1825-1838. [PMID: 32661114 DOI: 10.1158/1541-7786.mcr-19-0311] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 05/21/2020] [Accepted: 07/06/2020] [Indexed: 12/16/2022]
Abstract
Triple-negative breast cancer (TNBC) has the worst prognosis of all breast cancers, and lacks effective targeted treatment strategies. Previously, we identified 33 transcription factors highly expressed in TNBC. Here, we focused on six sex determining region Y-related HMG-box (SOX) transcription factors (SOX4, 6, 8, 9, 10, and 11) highly expressed in TNBCs. Our siRNA screening assay demonstrated that SOX9 knockdown suppressed TNBC cell growth and invasion in vitro. Thus, we hypothesized that SOX9 is an important regulator of breast cancer survival and metastasis, and demonstrated that knockout of SOX9 reduced breast tumor growth and lung metastasis in vivo. In addition, we found that loss of SOX9 induced profound apoptosis, with only a slight impairment of G1 to S progression within the cell cycle, and that SOX9 directly regulates genes controlling apoptosis. On the basis of published CHIP-seq data, we demonstrated that SOX9 binds to the promoter of apoptosis-regulating genes (tnfrsf1b, fadd, tnfrsf10a, tnfrsf10b, and ripk1), and represses their expression. SOX9 knockdown upregulates these genes, consistent with the induction of apoptosis. Analysis of available CHIP-seq data showed that SOX9 binds to the promoters of several epithelial-mesenchymal transition (EMT)- and metastasis-regulating genes. Using CHIP assays, we demonstrated that SOX9 directly binds the promoters of genes involved in EMT (vim, cldn1, ctnnb1, and zeb1) and that SOX9 knockdown suppresses the expression of these genes. IMPLICATIONS: Our studies identified the SOX9 protein as a "master regulator" of breast cancer cell survival and metastasis, and provide preclinical rationale to develop SOX9 inhibitors for the treatment of women with metastatic triple-negative breast cancer.
Collapse
|
29
|
Frampton GK, Shepherd J, Pickett K, Griffiths G, Wyatt JC. Digital tools for the recruitment and retention of participants in randomised controlled trials: a systematic map. Trials 2020; 21:478. [PMID: 32498690 PMCID: PMC7273688 DOI: 10.1186/s13063-020-04358-3] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 04/28/2020] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Recruiting and retaining participants in randomised controlled trials (RCTs) is challenging. Digital tools, such as social media, data mining, email or text-messaging, could improve recruitment or retention, but an overview of this research area is lacking. We aimed to systematically map the characteristics of digital recruitment and retention tools for RCTs, and the features of the comparative studies that have evaluated the effectiveness of these tools during the past 10 years. METHODS We searched Medline, Embase, other databases, the Internet, and relevant web sites in July 2018 to identify comparative studies of digital tools for recruiting and/or retaining participants in health RCTs. Two reviewers independently screened references against protocol-specified eligibility criteria. Included studies were coded by one reviewer with 20% checked by a second reviewer, using pre-defined keywords to describe characteristics of the studies, populations and digital tools evaluated. RESULTS We identified 9163 potentially relevant references, of which 104 articles reporting 105 comparative studies were included in the systematic map. The number of published studies on digital tools has doubled in the past decade, but most studies evaluated digital tools for recruitment rather than retention. The key health areas investigated were health promotion, cancers, circulatory system diseases and mental health. Few studies focussed on minority or under-served populations, and most studies were observational. The most frequently-studied digital tools were social media, Internet sites, email and tv/radio for recruitment; and email and text-messaging for retention. One quarter of the studies measured efficiency (cost per recruited or retained participant) but few studies have evaluated people's attitudes towards the use of digital tools. CONCLUSIONS This systematic map highlights a number of evidence gaps and may help stakeholders to identify and prioritise further research needs. In particular, there is a need for rigorous research on the efficiency of the digital tools and their impact on RCT participants and investigators, perhaps as studies-within-a-trial (SWAT) research. There is also a need for research into how digital tools may improve participant retention in RCTs which is currently underrepresented relative to recruitment research. REGISTRATION Not registered; based on a pre-specified protocol, peer-reviewed by the project's Advisory Board.
Collapse
|
30
|
Dermont MA, Field P, Shepherd J, Rushton R. Evidence into action: implementing alcohol screening and brief interventions in the UK Armed Forces. BMJ Mil Health 2020; 166:187-192. [DOI: 10.1136/jramc-2019-001313] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 09/05/2019] [Accepted: 09/09/2019] [Indexed: 11/04/2022]
Abstract
IntroductionAlcohol-related harm continues to represent a major public health problem and previous evidence suggests that alcohol misuse within the UK Armed Forces is higher than in the general population. The aim was to introduce a population-level primary care intervention with an existing evidence base to identify and support Service Personnel whose drinking places them at greater risk of harm.ImplementationFollowing successful piloting, the Alcohol Use Disorders Identification Test-Consumption (AUDIT-C) brief screening tool was introduced as part of routine dental inspections by Defence Primary Healthcare (DPHC) dentists. Alcohol brief intervention (ABI) advice and signposting to support services was offered to personnel identified as being at increased risk and recorded in the patient’s electronic health record.Achievements to datePatients attending DPHC Dental Centres are now routinely offered AUDIT-C with 74% (109 459) personnel screened in the first 12 months rising to over 276 000 at 24 months, representing the single largest use of AUDIT-C and ABIs in a military population to date.DiscussionIntroduction of AUDIT-C has seen Defence successfully deliver a whole population alcohol initiative, overcoming implementation barriers to demonstrate the flexibility of a dental workforce to deliver a public health intervention at scale and contributing towards promoting positive attitudes towards alcohol use. The initiative represents a first step towards the goal of a standardised alcohol screening and treatment pathway across DPHC while recognising that the Defence Medical Services are only one aspect of the broader public health approach required to tackle alcohol-related harm in Service Personnel.
Collapse
|
31
|
Schmidt MF, Turner L, Bradley M, Shepherd J. 2738 Comparing Postoperative Pain with Laparoscopic Versus Robotic Sacrocolpopexy. J Minim Invasive Gynecol 2019. [DOI: 10.1016/j.jmig.2019.09.431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
32
|
Anstee S, Shepherd J, Graham CA, Stone N, Brown K, Newby K, Ingham R. Evidence for behavioural interventions addressing condom use fit and feel issues to improve condom use: a systematic review. Sex Health 2019; 16:539-547. [PMID: 31665616 DOI: 10.1071/sh19001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Accepted: 06/21/2019] [Indexed: 11/23/2022]
Abstract
Continuing high rates of sexually transmissible infections (STIs) in many countries highlight the need to identify effective behavioural interventions. Consistent and correct use of male condoms is a key strategy for the prevention of STIs. However, some men report problems with condom fit (e.g. the size and shape of the condom) and feel (e.g. tightness, irritation, sensitivity), which inhibits their use. We conducted a systematic review to identify existing interventions addressing condom use fit and feel problems. We searched electronic databases for peer-reviewed articles and searched reference lists of retrieved studies. Five studies met the inclusion criteria. These were generally small-scale pilot studies evaluating behavioural interventions to promote safer sex with men aged under 30 years, addressing, among other things, barriers to condom use relating to fit and feel. There were significant increases in the reported use of condoms, including condom use with no errors and problems. Improvements in some condom use mediators were reported, such as condom use self-efficacy, knowledge, intentions and condom use experience. There were mixed findings in terms of the ability of interventions to reduce STI acquisition. Behavioural interventions addressing condom fit and feel are promising in terms of effectiveness but require further evaluation.
Collapse
|
33
|
Humphreys DK, Esposti MD, Gardner F, Shepherd J. Violence in England and Wales: does media reporting match the data? BMJ 2019; 367:l6040. [PMID: 31662309 DOI: 10.1136/bmj.l6040] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
34
|
Grimmett C, Corbett T, Brunet J, Shepherd J, Pinto BM, May CR, Foster C. Systematic review and meta-analysis of maintenance of physical activity behaviour change in cancer survivors. Int J Behav Nutr Phys Act 2019; 16:37. [PMID: 31029140 PMCID: PMC6486962 DOI: 10.1186/s12966-019-0787-4] [Citation(s) in RCA: 102] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 03/04/2019] [Indexed: 01/05/2023] Open
Abstract
Background Physical activity can improve health and wellbeing after cancer and may reduce cancer recurrence and mortality. To achieve such long-term benefits cancer survivors must be habitually active. This review evaluates the effectiveness of interventions in supporting maintenance of physical activity behaviour change among adults diagnosed with cancer and explores which intervention components and contextual features are associated with effectiveness. Methods Relevant randomised controlled trials (RCTs) were identified by a search of Ovid Medline, Ovid Embase and PsychINFO. Trials including adults diagnosed with cancer, assessed an intervention targeting physical activity and reported physical activity behaviour at baseline and ≥ 3 months post-intervention were included. The behaviour change technique (BCT) taxonomy was used to identify intervention components and the Template for Intervention Description and Replication to capture contextual features. Random effect meta-analysis explored between and within group differences in physical activity behaviour. Standardised mean differences (SMD) describe effect size. Results Twenty seven RCTs were included, 19 were pooled in meta-analyses. Interventions were effective at changing long-term behaviour; SMD in moderate to vigorous physical activity (MVPA) between groups 0.25; 95% CI = 0.16–0.35. Within-group pre-post intervention analysis yielded a mean increase of 27.48 (95% CI = 11.48-43.49) mins/wk. of MVPA in control groups and 65.30 (95% CI = 45.59–85.01) mins/wk. of MVPA in intervention groups. Ineffective interventions tended to include older populations with existing physical limitations, had fewer contacts with participants, were less likely to include a supervised element or the BCTs of ‘action planning’, ‘graded tasks’ and ‘social support (unspecified)’. Included studies were biased towards inclusion of younger, female, well-educated and white populations who were already engaging in some physical activity. Conclusions Existing interventions are effective in achieving modest increases in physical activity at least 3 months post-intervention completion. Small improvements were also evident in control groups suggesting low-intensity interventions may be sufficient in promoting small changes in behaviour that last beyond intervention completion. However, study samples are not representative of typical cancer populations. Interventions should consider a stepped-care approach, providing more intensive support for older people with physical limitations and others less likely to engage in these interventions. Electronic supplementary material The online version of this article (10.1186/s12966-019-0787-4) contains supplementary material, which is available to authorized users.
Collapse
|
35
|
Miller P, Droste N, Egerton‐Warburton D, Caldicott D, Fulde G, Ezard N, Preisz P, Walby A, Lloyd‐Jones M, Stella J, Sheridan M, Baker T, Hall M, Shakeshaft A, Havard A, Bowe S, Staiger PK, D'Este C, Doran C, Coomber K, Hyder S, Barker D, Shepherd J. Driving change: A partnership study protocol using shared emergency department data to reduce alcohol‐related harm. Emerg Med Australas 2019; 31:942-947. [DOI: 10.1111/1742-6723.13266] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 01/16/2019] [Accepted: 02/05/2019] [Indexed: 11/28/2022]
|
36
|
Attwood D, D’Arcy N, Shepherd J, Griffiths A. 9THERE AND BACK AGAIN: THE DEVELOPMENT OF AN AMBULATORY CARE PATHWAY FOR OLDER PEOPLE LIVING WITH FRAILTY THAT BEGINS AND ENDS IN THE PATIENT’S OWN HOME. PART 2: RESULTS OF A FOUR DAY PILOT. Age Ageing 2019. [DOI: 10.1093/ageing/afy211.09] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
37
|
Picot J, Rose M, Cooper K, Pickett K, Lord J, Harris P, Whyte S, Böhning D, Shepherd J. Virtual chromoendoscopy for the real-time assessment of colorectal polyps in vivo: a systematic review and economic evaluation. Health Technol Assess 2019; 21:1-308. [PMID: 29271339 DOI: 10.3310/hta21790] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Current clinical practice is to remove a colorectal polyp detected during colonoscopy and determine whether it is an adenoma or hyperplastic by histopathology. Identifying adenomas is important because they may eventually become cancerous if untreated, whereas hyperplastic polyps do not usually develop into cancer, and a surveillance interval is set based on the number and size of adenomas found. Virtual chromoendoscopy (VCE) (an electronic endoscopic imaging technique) could be used by the endoscopist under strictly controlled conditions for real-time optical diagnosis of diminutive (≤ 5 mm) colorectal polyps to replace histopathological diagnosis. OBJECTIVE To assess the clinical effectiveness and cost-effectiveness of the VCE technologies narrow-band imaging (NBI), flexible spectral imaging colour enhancement (FICE) and i-scan for the characterisation and management of diminutive (≤ 5 mm) colorectal polyps using high-definition (HD) systems without magnification. DESIGN Systematic review and economic analysis. PARTICIPANTS People undergoing colonoscopy for screening or surveillance or to investigate symptoms suggestive of colorectal cancer. INTERVENTIONS NBI, FICE and i-scan. MAIN OUTCOME MEASURES Diagnostic accuracy, recommended surveillance intervals, health-related quality of life (HRQoL), adverse effects, incidence of colorectal cancer, mortality and cost-effectiveness of VCE compared with histopathology. DATA SOURCES Electronic bibliographic databases including MEDLINE, EMBASE, The Cochrane Library and Database of Abstracts of Reviews of Effects were searched for published English-language studies from inception to June 2016. Bibliographies of related papers, systematic reviews and company information were screened and experts were contacted to identify additional evidence. REVIEW METHODS Systematic reviews of test accuracy and economic evaluations were undertaken in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement. Meta-analyses were conducted, where possible, to inform the independent economic model. A cost-utility decision-analytic model was developed to estimate the cost-effectiveness of VCE compared with histopathology. The model used a decision tree for patients undergoing endoscopy, combined with estimates of long-term outcomes (e.g. incidence of colorectal cancer and subsequent morbidity and mortality) derived from University of Sheffield School of Health and Related Research's bowel cancer screening model. The model took a NHS perspective, with costs and benefits discounted at 3.5% over a lifetime horizon. There were limitations in the data on the distribution of adenomas across risk categories and recurrence rates post polypectomy. RESULTS Thirty test accuracy studies were included: 24 for NBI, five for i-scan and three for FICE (two studies assessed two interventions). Polyp assessments made with high confidence were associated with higher sensitivity and endoscopists experienced in VCE achieved better results than those without experience. Two economic evaluations were included. NBI, i-scan and FICE are cost-saving strategies compared with histopathology and the number of quality-adjusted life-years gained was similar for histopathology and VCE. The correct surveillance interval would be given to 95% of patients with NBI, 94% of patients with FICE and 97% of patients with i-scan. LIMITATIONS Limited evidence was available for i-scan and FICE and there was heterogeneity among the NBI studies. There is a lack of data on longer-term health outcomes of patients undergoing VCE for assessment of diminutive colorectal polyps. CONCLUSIONS VCE technologies, using HD systems without magnification, could potentially be used for the real-time assessment of diminutive colorectal polyps, if endoscopists have adequate experience and training. FUTURE WORK Future research priorities include head-to-head randomised controlled trials of all three VCE technologies; more research on the diagnostic accuracy of FICE and i-scan (when used without magnification); further studies evaluating the impact of endoscopist experience and training on outcomes; studies measuring adverse effects, HRQoL and anxiety; and longitudinal data on colorectal cancer incidence, HRQoL and mortality. STUDY REGISTRATION This study is registered as PROSPERO CRD42016037767. FUNDING The National Institute for Health Research Health Technology Assessment programme.
Collapse
|
38
|
Shepherd J, Perou C. Abstract B185: Epithelial cancer cell-expressed genes contribute to clinically relevant immune-based classifications of breast cancer. Cancer Immunol Res 2019. [DOI: 10.1158/2326-6074.cricimteatiaacr18-b185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction: With the development of immunotherapies for breast cancer therapy, reliable methods to evaluate the extent and type of immune involvement present in tumors and investigation of its effect on patient prognosis and treatment are needed. Identifying tumor-specific features that affect immune involvement will be a key to understand tumor-immune involvement. Therefore, we evaluated expression of immune-related mRNA signatures in TCGA breast cancer data to identify distinct immune-related tumor subsets and asociated prognostic values. We also evaluated immune cell features, including B cell and T-cell receptor richness and diversity, as well as epithelial tumor cell-specific features, including somatic mutations, copy number alterations and differential RNA expression between identified groups. Methods: More than 130 published immune related gene signatures were evaluated in 1095 breast tumors and 97 normal mammary samples. Groups were identified by consensus based hierarchical clustering of the immune signatures, using the proportion of ambiguous clustering to select the optimal number of groups. An ElasticNet model trained on TCGA data was applied to two other breast tumor datasets to predict immune group classification. RNA-sequencing (RNAseq) data from 70 breast cancer cell lines and from human tumor xenografts passaged in immune-compromised mice and processed through a human specific sequencing pipeline provided in vitro and in vivo sources of epithelial cancer cell expression with limited stromal content that was used to filter TCGA bulk RNAseq data for epithelial expressed genes. Results: We identified three distinct immune groups present in breast cancer: immune-low, immune-normal, and immune-high. The immune-high group is characterized by high T-cell scores, including both cytotoxic and regulatory T-cell signatures, and increased B cell and macrophage signatures. The immune-normal set shows signs of normal epithelia and low proliferation. The immune-low group has very low immune cell signatures. Intrinsic breast cancer subtypes (Basal, luminal A, Luminal B, Her2 and Normal-like) are present in each of the immune groups; however, enrichment of basal tumors in immune-high, luminal tumors in the immune-low, and normal mammary, normal-like tumors and luminal A tumors in the immune-normal group demonstrate an interaction between intrinsic tumor type and immune involvement. Immune groups are prognostic in TCGA, with the immune-high group having improved recurrence-free survival. Two more breast tumor datasets confirmed improved survival for basal tumors in the immune-high group relative to the immune-low tumors. Total mutation burden, unique somatic mutations, and copy number alterations did not show significant changes between immune-low and –high groups, whereas RNA expression differs between groups. Selecting for genes with evidence of expression by epithelial breast cancer cells identified over 8,000 genes differentially expressed between the immune-low and –high groups, with CCL5, ACAP1, PVRIG, SLA2, LCK and CD8A being among the most significant. Conclusion: Breast cancer can be divided into three clinically relevant immune-related groups. Immune-high has high immune involvement, showing of markers for cytotoxicity and immune suppression and exhaustion. These patients have improved survival, but may still benefit from immune checkpoint inhibition. Immune-normal is reflective of a normal mammary immune state, suggesting a microenvironment that has not been strongly altered by the tumor. Immune-low appears to demonstrate exclusion of immune cells from the tumor, even though tumors contain predicted neoantigens. These patients have poor survival and novel therapeutic strategies to activate immune involvement need to be developed. Epithelial cancer cell expressed many immune-related genes, including CCL5, LCK and CD8A, which may be critical determinants of immune cell attraction.
Citation Format: Jonathan Shepherd, Charles Perou. Epithelial cancer cell-expressed genes contribute to clinically relevant immune-based classifications of breast cancer [abstract]. In: Proceedings of the Fourth CRI-CIMT-EATI-AACR International Cancer Immunotherapy Conference: Translating Science into Survival; Sept 30-Oct 3, 2018; New York, NY. Philadelphia (PA): AACR; Cancer Immunol Res 2019;7(2 Suppl):Abstract nr B185.
Collapse
|
39
|
Sykes CA, Shepherd J, McGoldrick C, Kennedy N, Raafat A. A case of rifampicin-induced haemolysis. Int J Tuberc Lung Dis 2019; 23:239-240. [DOI: 10.5588/ijtld.18.0255] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
40
|
Gil-Nagel A, Sanchez-Carpintero R, San Antonio V, Mistry A, Barker G, Shepherd J, Gil A. Ascertaining the epidemiology, patient flow and disease management for Dravet syndrome in Spain. Rev Neurol 2019; 68:75-81. [PMID: 30638257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
INTRODUCTION Dravet syndrome (DS) is a rare, drug resistant epilepsy that starts very early in life with febrile seizures followed by cognitive impairment and diverse seizure types. AIM To generate evidence on the epidemiology of DS, its diagnosis, patient-flow, treatment and unmet needs from the perspective of Spanish experts. DEVELOPMENT A two-round Delphi study involving 19 physicians was conducted. Questionnaires were based on literature review and validated by clinical experts. Consensus was reached when topics were subject to routine clinical practice and individual experience, or the coefficient of variation among answers was <= 0.3. The estimated number of new DS patients is 73 per year. Prevalence is estimated to be between 348-540 patients. DS is mostly diagnosed in children. Survival varies from 5 to 60 years. There is no standardised follow-up of patients beyond the age of 18 and mortality rates are uncertain. No standard guidelines exist for diagnosing or treating DS. It takes 9 to 15 months to confirm the diagnosis and genetic testing is unevenly available. Valproic acid, clobazam, stiripentol and topiramate are commonly used. Poor efficacy and safety are the main reasons for treatment switch. CONCLUSIONS The epidemiology of DS in Spain is not well known and several areas of unmet needs still exist. Experts' views offer a starting point for further research into the reality of DS in Spain. Epidemiological studies, consensus criteria, easy access to genetic testing, treatment options, training and research into quality of life aspects are highly needed.
Collapse
|
41
|
Rose M, Shepherd J, Harris P, Pickett K, Lord J. Etelcalcetide for Treating Secondary Hyperparathyroidism: An Evidence Review Group Evaluation of a NICE Single Technology Appraisal. PHARMACOECONOMICS 2018; 36:1299-1308. [PMID: 29691773 DOI: 10.1007/s40273-018-0661-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The manufacturer of the calcimimetic drug etelcalcetide was invited to make an evidence submission as part of the National Institute for Health and Care Excellence (NICE) Single Technology Appraisal (STA) programme. Within this submission, they reported evidence on the clinical and cost effectiveness of etelcalcetide for the treatment of secondary hyperparathyroidism (SHPT) in patients with chronic kidney disease (CKD) on haemodialysis. The Southampton Health Technology Assessments Centre (SHTAC), part of the Wessex Institute at the University of Southampton, was the independent Evidence Review Group (ERG) commissioned to appraise the company's submission. This article describes the ERG's review and critique of the company's submission and summarises the NICE Appraisal Committee's subsequent guidance (issued in June 2017). The clinical-effectiveness evidence submitted by the company consisted of two double-blind, randomised controlled trials (RCTs) comparing etelcalcetide with placebo, one RCT comparing etelcalcetide with cinacalcet, two single-arm extension studies of the above trials, and one single-arm study evaluating the effect of switching from cinacalcet to etelcalcetide. No study specifically examined the population specified in the NICE appraisal scope: patients refractory to standard therapy with phosphate binders and vitamin D (PBVD). None of these trials were designed to collect long-term efficacy data for outcomes such as mortality, bone fractures, cardiovascular events, or parathyroidectomies. Instead, biomarker data from the trials were mapped to long-term outcomes by an assumed linear relationship between the trial outcome, reduction of parathyroid hormone (PTH) by > 30%, and the log-hazard ratios for the occurrence of clinical events derived from a large, long-term RCT of cinacalcet (the EVOLVE trial). After submission of a confidential Patient Access Scheme (PAS) discount reducing etelcalcetide drug costs, the incremental cost-effectiveness ratio (ICER) for etelcalcetide versus cinacalcet was £14,778 per quality-adjusted life-year (QALY) gained in the company's base case. While this value is lower than the NICE threshold range of £20,000 and £30,000 per QALY gained, it was the opinion of the ERG that the ICER was highly uncertain due to efficacy data limitations for etelcalcetide, inadequate synthesis of clinical-effectiveness evidence, and strong assumptions connecting short-term biomarker data with long-term clinical outcomes. The ERG produced an alternative base case for etelcalcetide versus cinacalcet, with an ICER of £22,400 per QALY gained, also subject to uncertainty. The NICE Appraisal Committee recommended etelcalcetide as an option for the treatment of SHPT in adults with CKD only if treatment with a calcimimetic is indicated and cinacalcet is not suitable, subject to the company's provision of the agreed PAS discount.
Collapse
|
42
|
Coulton S, Dale V, Deluca P, Gilvarry E, Godfrey C, Kaner E, McGovern R, Newbury-Birch D, Patton R, Parrott S, Perryman K, Phillips T, Shepherd J, Drummond C. Screening for At-Risk Alcohol Consumption in Primary Care: A Randomized Evaluation of Screening Approaches. Alcohol Alcohol 2018; 52:312-317. [PMID: 28371897 DOI: 10.1093/alcalc/agx017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Accepted: 03/12/2017] [Indexed: 11/14/2022] Open
Abstract
Aims The aim of the study was to explore the relative efficiency and effectiveness of targeted versus universal screening for at-risk alcohol use in a primary care population in the UK. Methods The study was a randomized evaluation of screening approach (targeted versus universal) for consecutive attendees at primary care aged 18 years or more. Targeted screening involved screening any patient attending with one of the targeted presentations, conditions associated with excessive alcohol consumption: mental health, gastrointestinal, hypertension, minor injuries or a new patient registration. In the universal arm of the study all presentations in the recruitment period were included. Universal screening included all patients presenting to allocated practices. Results A total of 3562 potential participants were approached. The odds ratio of being screen positive was higher for the targeted group versus the universal group. Yet the vast majority of those screening positive in the universal group of the study would have been missed by a targeted approach. A combination of age and gender was a more efficient approach than targeting by clinical condition or context. Conclusions While screening targeted by age and gender is more efficient than universal screening, targeting by clinical condition or presentation is not. Further universal screening is more effective in identifying the full range of patients who could benefit from brief alcohol interventions, and would therefore have greater public health impact. Trial registration Current Controlled Trials ISRCTN06145674.
Collapse
|
43
|
Dickson R, Boland A, Duarte R, Kotas E, Woolacott N, Hodgson R, Riemsma R, Grimm S, Ramaekers B, Joore M, Büyükkaramikli N, Kaltenthaler E, Stevenson M, Pandor A, Edwards S, Hoyle M, Shepherd J, Armoiry X, Brazzelli M. EMA and NICE Appraisal Processes for Cancer Drugs: Current Status and Uncertainties. APPLIED HEALTH ECONOMICS AND HEALTH POLICY 2018; 16:429-432. [PMID: 29808296 PMCID: PMC6028888 DOI: 10.1007/s40258-018-0393-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
|
44
|
Coulton S, Dale V, Deluca P, Gilvarry E, Godfrey C, Kaner E, McGovern R, Newbury-Birch D, Patton R, Parrott S, Perryman K, Phillips T, Shepherd J, Drummond C, Heather N. Corrigendum: Screening for At-Risk Alcohol Consumption in Primary Care: A Randomized Evaluation of Screening Approaches. Alcohol Alcohol 2018; 53:499. [PMID: 29617716 DOI: 10.1093/alcalc/agy022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Indexed: 11/13/2022] Open
|
45
|
Bollu LR, Shepherd J, Zhao D, Ma Y, Mazumdar A, Brown PH. Abstract 2532: Wild-type p53 represses MELK expression by blocking the recruitment of FOXM1 to MELK promoter. Cancer Res 2018. [DOI: 10.1158/1538-7445.am2018-2532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Triple-negative breast cancer (TNBC) is the most aggressive form of breast cancer with poor prognosis due to frequent distant metastasis and lack of successful targeted therapies. To identify potential druggable targets, previously we performed a gene expression analysis and identified protein kinases that are highly expressed in TNBCs. In this study, we investigated the molecular mechanism through which wild-type p53 represses MELK expression in TNBC cells. Through these studies, we discovered that the expression of Maternal Embryonic Leucine zipper Kinase (MELK) is highly elevated in TNBC when wild-type p53 is lost or mutated. We also show that overexpression of wild-type p53 represses MELK expression without binding to MELK promoter.
Experimental Design and Methods: To identify the p53-responsive region in MELK promoter, we have made multiple promoter deletions using PCR deletion mutagenesis. The p53-responsive region was determined by measuring the activity of these promoter constructs in the presence of wild-type p53 using luciferase assays. TransFac software was used to identify potential transcription factors in the p53-responsive region. The effect of overexpression of p53 and FOXM1 on MELK expression was examined through Western blotting analysis. Using co-immuno precipitation (Co-IP) studies, we determined the protein-protein interactions between wild-type p53 and FOXM1. The effect of wild-type on FOXM1 recruitment was determined using chromatin immuno precipitation (ChIP) assays.
Results: Through promoter deletion analysis, we identified that deletion of the region between -1.69kb to -0.69kb in MELK promoter significantly reduced p53-dependent suppressive effect on MELK promoter activity. Screening this p53-responsive region using TransFac software, we identified a binding site for FOXM1, a previously reported MELK transcription factor. Similar to the regulation of MELK by wild-type p53, overexpression of wild-type p53 repressed FOXM1 and knockdown of wild-type p53 increased FOXM1 expression. Overexpression of FOXM1 increased MELK expression in p53-null and p53-mutant cells but not in p53 wild-type cells. Co-IP studies revealed that wild-type p53 interacts with FOXM1. ChIP studies revealed that overexpression of wild-type p53 significantly reduced the recruitment of FOXM1 to MELK promoter in TNBC cells.
Conclusion: These studies elucidated the regulation of MELK expression by wild-type p53 and demonstrated that wild-type p53 represses MELK expression by inhibiting expression and recruitment of FOXM1 to the MELK promoter. In this study, we identified a novel mechanism for upregulation of MELK expression in TNBC, which is associated with poor prognosis of breast cancer patients.
This work was supported by Susan G Komen Promise Grant (PB, SH, GM), SAB Komen grant (PB) and Young Foundation grant (PB).
Citation Format: Lakshmi Reddy Bollu, Jonathan Shepherd, Dekuang Zhao, Yanxia Ma, Abhijit Mazumdar, Powel H. Brown. Wild-type p53 represses MELK expression by blocking the recruitment of FOXM1 to MELK promoter [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2018; 2018 Apr 14-18; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2018;78(13 Suppl):Abstract nr 2532.
Collapse
|
46
|
Ma Y, Shepherd J, Zhao D, Bollu L, Hill J, Zhang Y, Mazumdar A, Brown PH. Abstract 3347: SOX9 is a critical regulator of triple-negative breast cancer growth and invasion. Cancer Res 2018. [DOI: 10.1158/1538-7445.am2018-3347] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Triple-negative breast cancers (TNBCs) have the worst prognosis of all breast cancers, and have few available therapies other than non-specific and toxic chemotherapy. To identify novel targets for TNBCs, we investigated expression levels of transcription factors (TFs) in TNBCs compared to those in Non-TNBCs. Our previous analyses identified the TFs highly expressed in TNBCs. Of these, six SRY (Sex Determining Region Y)-related HMG-box (SOX) TFs were highly expressed in TNBCs as compared to non-TNBCs. SOX genes belong to a superfamily of gene. There are approximately 20 SOX genes in humans and mice.
Hypothesis: SOX TFs are important regulators of TNBC cell growth and metastasis.
Material and Methods: We measured breast cancer cell growth using an automated cell counting assay. Cell migration and invasion were detected by transwell assays in non-TNBC (MCF7 and ZR75-1) and TNBC (MDA231 and MDA468) cells. DOX-inducible SOX9-knockout (KO) cell lines were established in MDA231, MDA468, and LM2 cell lines using an inducible Cas9-CRISPR system. A SOX9 expressing lentivirus was used to overexpress SOX9, and siRNAs were used to knockdown (KD) SOXs in the different breast cancer cells. Cell cycle phase and apoptosis were detected using flow cytometric analysis. Protein and mRNA levels of SOX9 in cell lines were examined by western blotting and qRT-PCR assays. SOX9 RNA expression data were obtained from the Oncomine Database. The Curtis dataset was used to analyze survival according to SOX9 expression using Kaplan-Meier survival curves and the statistical significance was determined using the log-rank test.
Results: We performed a screen using specific siRNA targeting the 6 SOX transcription factors (SOX4, 6, 8, 9, 10 and 11) that are high-expressed in TNBC, and measured the effect of loss on SOX expression on TNBC cell growth and invasion. SOX4, 6, 8, 9, and 10-KD using siRNA caused decreased cell proliferation (by 30% or more) of MDA231 and MDA468 TNBC cells, but not of MCF7 and T47D cell lines (non-TNBC). SOX11 or 17-KD had no effect on breast cancer growth. SOX9-KD and SOX9-KO decreased cell migration and invasion of MDA231 and MDA468 cells. Reduced expression of SOX9 also inhibited the in vivo growth and metastasis of MDA MB-231 and LM2 cells in mice. In contrast, overexpression of SOX9 in MCF7 and ZR75-1 cells increased cell migration and invasion. Our studies also demonstrated that loss of SOX9 induced a G1 to S cell cycle arrest and apoptosis. In addition, high expression of SOX9 was correlated with worse overall survival and 5-year disease-free survival in patients with TNBC breast cancer.
Conclusion: Our results demonstrate that the SOX9 acts as an essential molecule regulating TNBC growth and invasion. In the future, it may be possible to target SOX9 and its downstream genes to treat TNBC and prevent its metastasis.
Grant Support: These studies were supported by a Susan G. Komen for the Cure Promise Grant (PB).
Citation Format: Yanxia Ma, Jonathan Shepherd, Dekuang Zhao, Lakshmi Bollu, Jamal Hill, Yun Zhang, Abhijit Mazumdar, Powel H. Brown. SOX9 is a critical regulator of triple-negative breast cancer growth and invasion [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2018; 2018 Apr 14-18; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2018;78(13 Suppl):Abstract nr 3347.
Collapse
|
47
|
Page N, Sivarajasingam V, Jones S, Shepherd J. Links between deprivation and risk of violence-related injury: a qualitative study to identify potential causal mechanisms. J Public Health (Oxf) 2018; 40:e59-e65. [PMID: 28977487 DOI: 10.1093/pubmed/fdx073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Accepted: 06/13/2017] [Indexed: 11/14/2022] Open
Abstract
Background Deprivation has been shown to have a greater effect on risk of violent injury among adolescent girls than boys, but the mechanisms underlying this association have not been identified. Methods In this qualitative study designed to identify causal mechanisms, focus groups involving girls aged 14-16 years attending secondary schools in South Wales, UK, were convened. Schools were recruited based on a measure of area-level deprivation. Discussions were audio-recorded and transcripts analysed thematically. Results Girls from more deprived areas tended not to participate in organized activities, obtained alcohol from multiple sources, consumed alcoholic drinks of varying strengths in both supervised and unsupervised settings, and tended not to feel trusted by their parents; this led to poor adolescent-parent communication. Girls from less deprived areas tended to participate in organized activities, obtain alcohol from parents, consume low strength alcohol in supervised settings, and have a trusting and communicative relationship with their parents. Conclusion Deprivation may increase risk of adolescent girls sustaining violence-related injury by increasing their time spent in unsupervised environments, with alcohol and without parental knowledge.
Collapse
|
48
|
Sivarajasingam V, Read S, Svobodova M, Wight L, Shepherd J. Injury resulting from targeted violence: An emergency department perspective. CRIMINAL BEHAVIOUR AND MENTAL HEALTH : CBMH 2018; 28:295-308. [PMID: 29266565 DOI: 10.1002/cbm.2066] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 05/25/2017] [Accepted: 11/28/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND Hate crimes - those perpetrated because of perceived difference, including disability, race, religion, sexual orientation or transgender status - have not been studied at the point of the victim's hospital emergency department (ED) use. AIM To investigate the frequency, levels of physical harm and circumstances of targeted violence in those seeking treatment at EDs in three UK cities. METHOD In a multimethods study, face-to-face semi-structured interviews were conducted with 124 adult ED attenders with violent injuries. Victim and perpetrator socio-demographics were recorded. Patient narratives about perceived motives and circumstances were transcribed, uploaded onto NVivo for thematic analysis. RESULTS Nearly a fifth (23, 18.5%) of the injured patients considered themselves to have been attacked by others motivated by hostility or prejudice to their 'difference' (targeted violence). Thematic analyses suggested these prejudices were to appearance (7 cases), racial tension (5 cases), territorial association (3 cases) and race, religious or sexual orientation (8 cases). According to victims, alcohol intoxication was particularly relevant in targeted violence (estimated reported frequency 90% and 56% for targeted and non-targeted violence, respectively). CONCLUSIONS Our findings support a broader concept of hate victimisation and suggest that emergency room violence surveys could act as a community tension sensor and early warning system in this regard. Tackling alcohol misuse seems as important in this as in other forms of violence perpetration. Copyright © 2017 John Wiley & Sons, Ltd.
Collapse
|
49
|
Shepherd J, Frampton GK, Pickett K, Wyatt JC. Peer review of health research funding proposals: A systematic map and systematic review of innovations for effectiveness and efficiency. PLoS One 2018; 13:e0196914. [PMID: 29750807 PMCID: PMC5947897 DOI: 10.1371/journal.pone.0196914] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Accepted: 04/23/2018] [Indexed: 12/22/2022] Open
Abstract
OBJECTIVE To investigate methods and processes for timely, efficient and good quality peer review of research funding proposals in health. METHODS A two-stage evidence synthesis: (1) a systematic map to describe the key characteristics of the evidence base, followed by (2) a systematic review of the studies stakeholders prioritised as relevant from the map on the effectiveness and efficiency of peer review 'innovations'. Standard processes included literature searching, duplicate inclusion criteria screening, study keyword coding, data extraction, critical appraisal and study synthesis. RESULTS A total of 83 studies from 15 countries were included in the systematic map. The evidence base is diverse, investigating many aspects of the systems for, and processes of, peer review. The systematic review included eight studies from Australia, Canada, and the USA, evaluating a broad range of peer review innovations. These studies showed that simplifying the process by shortening proposal forms, using smaller reviewer panels, or expediting processes can speed up the review process and reduce costs, but this might come at the expense of peer review quality, a key aspect that has not been assessed. Virtual peer review using videoconferencing or teleconferencing appears promising for reducing costs by avoiding the need for reviewers to travel, but again any consequences for quality have not been adequately assessed. CONCLUSIONS There is increasing international research activity into the peer review of health research funding. The studies reviewed had methodological limitations and variable generalisability to research funders. Given these limitations it is not currently possible to recommend immediate implementation of these innovations. However, many appear promising based on existing evidence, and could be adapted as necessary by funders and evaluated. Where feasible, experimental evaluation, including randomised controlled trials, should be conducted, evaluating impact on effectiveness, efficiency and quality.
Collapse
|
50
|
|