A market for diagnostic devices for extreme point-of-care testing: Are we ASSURED of an ethical outcome?

The World Health Organisation (WHO) is leading a global effort to deliver improved diagnostic testing to people living in low-resource settings. A reliance on the healthcare technologies marketplace and industry, shapes many aspects of the WHO project, and in this situation normative guidance comes by way of the ASSURED criteria - Affordable, Sensitive, Specific, User-friendly, Rapid and robust, Equipment-free, and Delivered. While generally improving access to diagnostics, I argue that the ASSURED approach to distributive justice - efficiency - and assessment of worth - productivity - may constrain efforts to deliver timely and accurate diagnosis in the developing world equitably by holding back new and innovative diagnostics and indirectly encouraging program and device design that may unfairly discriminate against certain groups. Even as we try to overcome the problem of global healthcare injustice, we may be entrenching disadvantage. I present my critique of ASSURED by 1) referencing Boltanski and Thévenot's theory of orders of worth to highlight the industrial and market foundations of the ASSURED guidelines; 2) comparing ASSURED with other normative guides that elevate the importance of civic responsibility in evaluations of distributive justice; 3) presenting a case study of the failed promise of microfluidic diagnostic devices. I conclude that a new approach to normative guidance is required to assess the value of developing world diagnostics, preferably, one that does not force global public goods into the marketplace.

Genetic and epigenetic prognosticators of neuroendocrine tumours of the GI tract, liver, biliary tract and pancreas: A systematic review and meta-analysis

Multiple recurrent genetic and epigenetic aberrations have been associated with worse prognosis in multiple studies of neuroendocrine tumours (NETs), but these have been mainly small cohorts and univariate analysis. This review and meta-analysis will focus upon the literature available on NETs of the gastrointestinal (GI) tract, liver, biliary tract and pancreas. PubMed and Embase were searched for publications that investigated the prognostic value of (epi)genetic changes of neuroendocrine tumours. A meta-analysis was performed assessing the association of the (epi)genetic alterations with overall survival (OS), disease-free survival (DFS) or locoregional control (LRC). In the pancreas DAXX/ATRX [hazard ratio (HR) = 3.29; 95% confidence interval (CI) = 2.28-4.74] and alternative lengthening telomeres (ALT) activation (HR = 8.20; 95% CI = 1.40-48.07) showed a pooled worse survival. In the small bowel NETs gains on chromosome 14 were associated with worse survival (HR  2.85; 95% CI = 1.40-5.81). NETs from different anatomical locations must be regarded as different biological entities with diverging molecular prognosticators, and epigenetic changes being important to the pathogenesis of these tumours. This review underpins the prognostic drivers of pancreatic NET which lie in mutations of DAXX/ATRX and ALT pathways. However, there is reaffirmation that prognostic molecular biomarkers of small bowel NETs should be sought in copy number variations (CNVs) rather than in single nucleotide variations (SNVs). This review also reveals how little is known about the prognostic significance of epigenetics in NETs.

Recurrent syncope from parapharyngeal cancer

The glossopharyngeal nerve is a cause of reflex bradycardia and syncope in patients with head and neck cancer. These clinical syndromes are rare but can be debilitating with variation in clinical presentation. The underlying mechanism is often incorrectly assumed to be carotid sinus hypersensitivity due to the cancerous lesion; however, examples in the literature also report the effect on the glossopharyngeal nerve or its branches by parapharyngeal lesions. We report two such cases known to a palliative care service. The symptomatic treatment options were limited due to patients' frailty. Both patients experienced some reduction in their syncopal symptoms with anticholinergic agents.

Maintaining High-Touch in High-Tech Digital Health Monitoring and Multi-Omics Prognostication: Ethical, Equity, and Societal Considerations in Precision Health for Palliative Care

Advances in digital health, systems biology, environmental monitoring, and artificial intelligence (AI) continue to revolutionize health care, ushering a precision health future. More than disease treatment and prevention, precision health aims at maintaining good health throughout the lifespan. However, how can precision health impact care for people with a terminal or life-limiting condition? We examine here the ethical, equity, and societal/relational implications of two precision health modalities, (1) integrated systems biology/multi-omics analysis for disease prognostication and (2) digital health technologies for health status monitoring and communication. We focus on three main ethical and societal considerations: benefits and risks associated with integration of these modalities into the palliative care system; inclusion of underrepresented and marginalized groups in technology development and deployment; and the impact of high-tech modalities on palliative care's highly personalized and "high-touch" practice. We conclude with 10 recommendations for ensuring that precision health technologies, such as multi-omics prognostication and digital health monitoring, for palliative care are developed, tested, and implemented ethically, inclusively, and equitably.

Imprinted Dlk1 dosage as a size determinant of the mammalian pituitary gland

Co-regulated genes of the Imprinted Gene Network are involved in the control of growth and body size, and imprinted gene dysfunction underlies human paediatric disorders involving the endocrine system. Imprinted genes are highly expressed in the pituitary gland, among them, Dlk1, a paternally expressed gene whose membrane-bound and secreted protein products can regulate proliferation and differentiation of multiple stem cell populations. Dosage of circulating DLK1 has been previously implicated in the control of growth through unknown molecular mechanisms. Here we generate a series of mouse genetic models to modify levels of Dlk1 expression in the pituitary gland and demonstrate that the dosage of DLK1 modulates the process of stem cell commitment with lifelong impact on pituitary gland size. We establish that stem cells are a critical source of DLK1, where embryonic disruption alters proliferation in the anterior pituitary, leading to long-lasting consequences on growth hormone secretion later in life.

Benralizumab: A novel treatment for the cutaneous features of paediatric eosinophilic granulomatosis with polyangiitis (pEGPA)

Eosinophilic granulomatosis with polyangiitis (EGPA) is a systemic vasculitis presenting primarily with pulmonary and cutaneous features. The disease is typically seen in the fifth or sixth decade of life (1, 2). We report a case of EGPA in an adolescent who was successfully treated with the interleukin-5 (IL-5) receptor inhibitor, benralizumab.

The Virtues of Interpretable Medical AI

Artificial intelligence (AI) systems have demonstrated impressive performance across a variety of clinical tasks. However, notoriously, sometimes these systems are "black boxes." The initial response in the literature was a demand for "explainable AI." However, recently, several authors have suggested that making AI more explainable or "interpretable" is likely to be at the cost of the accuracy of these systems and that prioritizing interpretability in medical AI may constitute a "lethal prejudice." In this paper, we defend the value of interpretability in the context of the use of AI in medicine. Clinicians may prefer interpretable systems over more accurate black boxes, which in turn is sufficient to give designers of AI reason to prefer more interpretable systems in order to ensure that AI is adopted and its benefits realized. Moreover, clinicians may be justified in this preference. Achieving the downstream benefits from AI is critically dependent on how the outputs of these systems are interpreted by physicians and patients. A preference for the use of highly accurate black box AI systems, over less accurate but more interpretable systems, may itself constitute a form of lethal prejudice that may diminish the benefits of AI to-and perhaps even harm-patients.

Direct Detection of Hydrogen Bonds in Supramolecular Systems Using 1H-15N Heteronuclear Multiple Quantum Coherence Spectroscopy

Hydrogen-bonded supramolecular systems are usually characterized in solution through analysis of NMR data such as complexation-induced shifts and nuclear Overhauser effects (nOe). Routine direct detection of hydrogen bonding particularly in multicomponent mixtures, even with the aid of 2D NMR experiments for full assignment, is more challenging. We describe an elementary rapid ¹H-¹⁵N HMQC NMR experiment which addresses these challenges without the need for complex pulse sequences. Under readily accessible conditions (243/263 K, 50 mM solutions) and natural ¹⁵N abundance, unambiguous assignment of ¹⁵N resonances facilitates direct detection of intra- and intermolecular hydrogen bonds in mechanically interlocked structures and quadruply hydrogen-bonded dimers─of dialkylaminoureidopyrimidinones, ureidopyrimidinones, and diamidonaphthyridines─in single or multicomponent mixtures to establish tautomeric configuration, conformation, and, to resolve self-sorted speciation.

The Virtues of Interpretable Medical Artificial Intelligence

Artificial intelligence (AI) systems have demonstrated impressive performance across a variety of clinical tasks. However, notoriously, sometimes these systems are "black boxes." The initial response in the literature was a demand for "explainable AI." However, recently, several authors have suggested that making AI more explainable or "interpretable" is likely to be at the cost of the accuracy of these systems and that prioritizing interpretability in medical AI may constitute a "lethal prejudice." In this article, we defend the value of interpretability in the context of the use of AI in medicine. Clinicians may prefer interpretable systems over more accurate black boxes, which in turn is sufficient to give designers of AI reason to prefer more interpretable systems in order to ensure that AI is adopted and its benefits realized. Moreover, clinicians may be justified in this preference. Achieving the downstream benefits from AI is critically dependent on how the outputs of these systems are interpreted by physicians and patients. A preference for the use of highly accurate black box AI systems, over less accurate but more interpretable systems, may itself constitute a form of lethal prejudice that may diminish the benefits of AI to-and perhaps even harm-patients.

67 Does a National Lockdown Affect the Characteristics of Deep Vein Thromboses in Patients in the Community?

Aim

Has lockdown and COVID-19 led to a change into the characteristics of DVT's and patients who have them alongside a review of the DVT service.

Method

Data was collected retrospectively from electronic patient records system for the following periods: 1st April until 30th June 2019 and 1st April until 30th June 2020. These were the key months during the first United Kingdom national lockdown. Data was analysed for patient demographics, risk factors, characteristics of the DVT, management and DVT reoccurrence. Statistical analyses were preformed using GraphPad Prism 8.

Results

227 patients sustained community DVT's in 2019 and 211 patients in 2020 during the study period. 13 of these patients in 2020 were COVID-19 positive. There was a difference in gender distribution (p= 0.0128) with 128 males and 99 females in 2019, 93 males and 118 females in 2020. No significant difference was noted for the incidence of thrombophilia with 9 in 2019 and 3 in 2020 (p=0.1437). Fewer long-haul journeys were made (p=0.012) with 16 in 2019 and only 2 in 2020. Fewer patients had immobility as a risk factor with 79 in 2019 and 55 in 2020 (p=0.0494). However, there were more patients using the contraceptive pill (p=0.0086) with 1 in 2019 and 9 in 2020.

Conclusion

There is no significant difference in the characteristics, extent, and management of DVT's prior to and during Lockdown during COVID-19. National Lockdowns do not affect community DVT's however it is important to highlight the surrounding inpatient numbers.

Impaired fibrinolysis in severe Covid-19 infection is detectable in early stages of the disease

BACKGROUND

A significant degree of mortality and morbidity in Covid-19 is due to thromboembolic disease. Coagulopathy has been well described in critically unwell patients on ICU. There is less clear evidence regarding these changes at the time of presentation to the Emergency Department and the progression of disease over time.

OBJECTIVE

We sought to investigate whether coagulation markers can predict severity and how they change over the disease course.

METHODS

Patients presenting to a single University Teaching Hospital were recruited and followed up if PCR was positive. Alongside routine blood testing, Rotational Thromboelastometry (ROTEM) was performed. Outcome data was recorded for all patients, and ROTEM values were compared across outcome groups.

RESULTS

Extem and Intem Maximum Lysis were significantly reduced in those who died or required an ICU admission, indicating a reduced ability to break down clot mass in the most critically unwell patients.

CONCLUSION

Comparisons between groups demonstrated that one distinguishing feature between those who require ICU admission or die of Covid-19 compared with those who survive a hospital stay to discharge was the extent to which fibrinolysis could occur. Mortality and morbidity in Covid-19 infection appears in part driven by an inability to break down clot mass.

Chaos Unleashed: The impact of recreational drugs and COVID on young adults

Introduction

This case series reveals a number of young adults, whom after chronic use of recreational drugs, suffer the life-long consequence of severe chronic mental illness.

Objectives

• Review the illicit drugs that are commonly associated with psychotic symptoms. • Highlight exposures theorized to impact genetics associated with DSM 5 diseases. • Compare trends in illicit drug use during the worldwide COVID pandemic.

Methods

A literature review is used to examine the impact of COVID pandemic on illicit drug use in metropolitan cities in European countries and compare the trends with what is seen by the consult liaison psychiatry service at a metropolitan community hospital in the USA.

Results

In European Countries with data available, there were measurable differences in which illicit drugs were used most during the COVID 19 pandemic. In the US this data is not readily available at the time of submission for proper comparisson.

Conclusions

Although definitive comparrison is pending, the results of extensive illicit drug use demostrate a high comorbidity with psychotic spectrum disorders in the DSM 5.

Disclosure

No significant relationships.

The Importance of Cognitive Appraisal and Social Support in Pregnancy During COVID-19 from an Interdisciplinary View

Aim: To describe how a US-based psychiatric Mother-Baby Unit adopted a virtual platform during the pandemic. Objectives: When the Covid-19 pandemic descended, mental health clinicians world-wide were faced with maintaining access and care delivery. Pregnant and newly postpartum women experienced the pandemic and lockdown through the lens of impending parenthood and new parenthood--amplifying distress, isolation, and lack of social and family support. The lockdown prevented those with most acute illness from accessing daily treatment in our structured, supportive intensive treatment setting. We acknowledged the urgency of developing a method to continue to treat our patients in a group environment that offered psychotherapy, psychopharmacology, dyadic and family intervention, and social support. Methods: The hospital purchased “Zoom for Health” platform to ensure compliance with regulatory guidelines. Cameras for individual computers were purchased with philanthropy funds, obtaining them quickly, compared to waiting for hospital funding. The clinical team designed a schedule of groups and individual sessions, each with their own zoom link. Each morning, a team member, sent the daily schedule through the patient portal of the EMR. Conclusion: Before the pandemic, the census was 12 pts per day. The full-day program paused for 7-10 days although individual sessions and medication management were conducted by phone as the virtual platform was constructed. Once established, census resumed normal levels. Challenges to running the Day Hospital virtually included: technology glitches, family demands and distractions, and privacy concerns. Overall, the program was a success wherein women requiring intensive treatment were able to receive treatment and social support.

Industry Technicians Embedded in Clinical Teams: Impacts on Medical Knowledge

Advances in implantable medical devices have increased the role for industry-employed allied professionals (IEAPs) in providing training and support during surgical procedures and follow-up care. The effect of these changes on the organization of medical knowledge and the sharing of information remains largely unexplored. Recent work in social epistemology and the conceptualizing of implantable medical device companies as part of a knowledge-based industry provide a framework for engaging with this issue. In this article, we argue that the insertion of industry technicians into hospitals diminishes epistemically valuable knowledge-sharing practices. This is in part a result of health care professionals' increased dependence on IEAPs, who control access to knowledge about devices, limiting opportunities both for independent learning and for dialogic education practices through which participants work toward a common goal. Ultimately, we claim that overdependence on the IEAP as expert undermines a basic social value regarding knowledge sharing for everyone's benefit.

147 ‘CHAMPIONING CONTINENCE’—ESTABLISHMENT OF A MULTIDISCIPLINARY CONTINENCE PROMOTION WORKING GROUP IN AN ACUTE TEACHING HOSPITAL

Background

In line with the National Frailty Programme1, patients over the age of 75 admitted to hospital should have a comprehensive geriatric assessment including the assessment of current continence status and any history of incontinence. Up to 39% of adults are reported to develop new onset urinary incontinence during admission to hospital2,3, however studies show that is it a problem not always identified by staff members,4. In response to these observations within an acute teaching hospital, a continence working party was formed involving members of nursing, physiotherapy and occupational therapy colleagues to explore the current practice and culture relating to continence management.

Methods

The group established key objectives which were broken into four strands;

1. Audit of documentation of baseline continence on admission (therapy and nursing).

2. Obtaining access to additional types of continence wear.

3. Staff education.

4. Pre and post education survey.

Results

1. Audit of documentation demonstrated poor standards of documentation of baseline continence. This led to an amendment to questioning prompts on therapy initial assessment forms and a plan to further evaluate the nursing documentation.

2. A wider array of continence wear has been made available on the wards providing greater options for patients.

3. Staff education session was compiled by a specialist physiotherapist and is widely available for staff to access on the hospitals online training portal.

4. Pre-education surveys have been completed with a view to re-administering following education roll-out.

Conclusion

The aim of this multidisciplinary working group is to equip staff with the correct resources, knowledge, and confidence to ensure best practice promotion of continence on the targeted wards. This project is the first strand of a wider culture changed that is needed around continence promotion for older adults in the acute setting.

146 INTRODUCTION OF A STANDARDISED SCREENING TOOL FOR REFERRAL TO OCCUPATIONAL THERAPY AND PHYSIOTHERAPY ON SPECIALIST GERIATRIC WARDS

Background

The Occupational Therapists (OTs) and Physiotherapists (PTs) on the Specialist Geriatric Wards provide assessment, rehabilitation, and discharge planning for frail older adults. All patients are screened on admission by OT or PT to determine the need for therapy input. This rapid response eliminates delay in accessing therapy input and allows for proactive commencement of intervention and discharge planning without the delay of awaiting a referral.

It was identified that the existing process for screening patients lacked structure and clarity, leading to inefficient use of time and resources with the risk of duplication.

The aim of this local Quality Improvement (QI) initiative was to standardise the process for screening using a triage sticker containing set criteria for referral to OT/PT.

Methods

Following team consultation and review of frailty screening tools, a triage sticker was adapted and modified from the ‘Think Frailty’ tool1. QI methodology and PDSA cycles identified 6 blanket triggers for OT/PT assessment on the ward.

F—Functional impairment.

R—Resident in a care home.

A—Acute/chronic confusion.

I—Immobility/Instability.

L—Living at home with support.

S—Specialist seating or skin integrity issues.

Retrospective review of traditional triage vs the new sicker was performed to evaluate accuracy.

Results

Retrospective analysis found 83% accuracy between the new triage sticker and the traditional triage method. Of the patients who did not meet the criteria for referral, to date none have been subsequently referred during their admission, demonstrating its comprehensiveness as a tool.

Conclusion

Pro-active and early intervention from OT and PT is beneficial for ensuring optimum patient care and efficient discharge planning for frail older adults admitted to hospital. This local QI project demonstrated that standardising the screening process for referral to OT/PT could improve clarity and enable more efficient use of time and resources.

Suture Tape Augmentation in Lateral Ankle Ligament Surgery: Current Concepts Review

Chronic lateral ankle instability (CLAI) is a condition that is characterized by persistent disability and recurrent ankle sprains while encompassing both functional and mechanical (laxity) instability. Failure of conservative treatment for CLAI often necessitates operative intervention to restore the stability of the ankle joint. The traditional or modified Broström techniques have been the gold standard operative approaches to address CLAI with satisfactory results; however, patients with generalized ligament laxity (GLL), prior unsuccessful repair, high body mass index, or high-demand athletes may experience suboptimal outcomes. Synthetic ligament constructs have been tested as an adjunct to orthopedic procedures to reinforce repaired or reconstructed ligaments or tendons with the hope of early mobilization, faster rehabilitation, and long-term prevention of instability. Suture tape augmentation is useful to address CLAI. Multiple operative techniques have been described. Because of the heterogeneity among the reported techniques and variability in postoperative rehabilitation protocols, it is difficult to evaluate whether the use of suture tape augmentation provides true clinical benefit in patients with CLAI. This review aims to provide a comprehensive outline of all the current techniques using suture tape augmentation for treatment of CLAI as well as present recent research aimed at guiding evidence-based protocols.

Resilient SARS-CoV-2 diagnostics workflows including viral heat inactivation

There is a worldwide need for reagents to perform SARS-CoV-2 detection. Some laboratories have implemented kit-free protocols, but many others do not have the capacity to develop these and/or perform manual processing. We provide multiple workflows for SARS-CoV-2 nucleic acid detection in clinical samples by comparing several commercially available RNA extraction methods: QIAamp Viral RNA Mini Kit (QIAgen), RNAdvance Blood/Viral (Beckman) and Mag-Bind Viral DNA/RNA 96 Kit (Omega Bio-tek). We also compared One-step RT-qPCR reagents: TaqMan Fast Virus 1-Step Master Mix (FastVirus, ThermoFisher Scientific), qPCRBIO Probe 1-Step Go Lo-ROX (PCR Biosystems) and Luna® Universal Probe One-Step RT-qPCR Kit (Luna, NEB). We used primer-probes that detect viral N (EUA CDC) and RdRP. RNA extraction methods provided similar results, with Beckman performing better with our primer-probe combinations. Luna proved most sensitive although overall the three reagents did not show significant differences. N detection was more reliable than that of RdRP, particularly in samples with low viral titres. Importantly, we demonstrated that heat treatment of nasopharyngeal swabs at 70°C for 10 or 30 min, or 90°C for 10 or 30 min (both original variant and B 1.1.7) inactivated SARS-CoV-2 employing plaque assays, and had minimal impact on the sensitivity of the qPCR in clinical samples. These findings make SARS-CoV-2 testing portable in settings that do not have CL-3 facilities. In summary, we provide several testing pipelines that can be easily implemented in other laboratories and have made all our protocols and SOPs freely available at https://osf.io/uebvj/.

Regional neurodegeneration correlates with sleep-wake dysfunction after stroke

Sleep-wake disruption is a key modifiable risk factor and sequela of stroke. The pathogenesis of poststroke sleep dysfunction is unclear. It is not known whether poststroke sleep pathology is due to focal infarction to sleep-wake hubs or to accelerated poststroke neurodegeneration in subcortical structures after stroke. We characterize the first prospective poststroke regional brain volumetric and whole-brain, fiber-specific, white matter markers of objectively measured sleep-wake dysfunction. We hypothesized that excessively long sleep (>8 h) duration and poor sleep efficiency (<80%) measured using the SenseWear Armband 3-months poststroke (n = 112) would be associated with reduced regional brain volumes of a priori-selected sleep-wake regions of interest when compared to healthy controls with optimal sleep characteristics (n = 35). We utilized a novel technique known as a whole-brain fixel-based analysis to investigate the fiber-specific white matter differences in participants with long sleep duration. Stroke participants with long sleep (n = 24) duration exhibited reduced regional volumes of the ipsilesional thalamus and contralesional amygdala when compared with controls. Poor sleep efficiency after stroke (n = 29) was associated with reduced ipsilesional thalamus, contralesional hippocampus, and contralesional amygdala volumes. Whole-brain fixel-based analyses revealed widespread macrostructural degeneration to the corticopontocerebellar tract in stroke participants with long sleep duration, with fiber reductions of up to 40%. Neurodegeneration to subcortical structures, which appear to be vulnerable to accelerated brain volume loss after stroke, may drive sleep-wake deficiencies poststroke, independent of lesion characteristics and confounding comorbidities. We discuss these findings in the context of the clinicopathological implications of sleep-related neurodegeneration and attempt to corroborate previous mechanistic-neuroanatomical findings.

Resilient SARS-CoV-2 diagnostics workflows including viral heat inactivation

There is a worldwide need for reagents to perform SARS-CoV-2 detection. Some laboratories have implemented kit-free protocols, but many others do not have the capacity to develop these and/or perform manual processing. We provide multiple workflows for SARS-CoV-2 nucleic acid detection in clinical samples by comparing several commercially available RNA extraction methods: QIAamp Viral RNA Mini Kit (QIAgen), RNAdvance Blood/Viral (Beckman) and Mag-Bind Viral DNA/RNA 96 Kit (Omega Bio-tek). We also compared One-step RT-qPCR reagents: TaqMan Fast Virus 1-Step Master Mix (FastVirus, ThermoFisher Scientific), qPCRBIO Probe 1-Step Go Lo-ROX (PCR Biosystems) and Luna ® Universal Probe One-Step RT-qPCR Kit (Luna, NEB). We used primer-probes that detect viral N (EUA CDC) and RdRP (PHE guidelines). All RNA extraction methods provided similar results. FastVirus and Luna proved most sensitive. N detection was more reliable than that of RdRP, particularly in samples with low viral titres. Importantly, we demonstrate that treatment of nasopharyngeal swabs with 70 degrees for 10 or 30 min, or 90 degrees for 10 or 30 min (both original variant and B 1.1.7) inactivates SARS-CoV-2 employing plaque assays, and that it has minimal impact on the sensitivity of the qPCR in clinical samples. These findings make SARS-CoV-2 testing portable to settings that do not have CL-3 facilities. In summary, we provide several testing pipelines that can be easily implemented in other laboratories and have made all our protocols and SOPs freely available at https://osf.io/uebvj/ .

Uncovering Survivorship Bias in Longitudinal Mental Health Surveys During the COVID-19 Pandemic

Aims

Markedly elevated adverse mental health symptoms were widely observed early in the coronavirus disease 2019 (COVID-19) pandemic. Unlike the U.S., where cross-sectional data indicate anxiety and depression symptoms have remained elevated, such symptoms reportedly declined in the U.K., according to analysis of repeated measures from a largescale longitudinal study. However, nearly 40% of U.K. respondents (those who did not complete multiple follow-up surveys) were excluded from analysis, suggesting that survivorship bias might partially explain this discrepancy. We therefore sought to assess survivorship bias among participants in our longitudinal survey study as part of The COVID-19 Outbreak Public Evaluation (COPE) Initiative.

Methods

Survivorship bias was assessed 4,039 U.S. respondents who completed surveys including the assessment of mental health as part of The COPE Initiative in April 2020 and were invited to complete follow-up surveys. Participants completed validated screening instruments for symptoms of anxiety, depression, and insomnia. Survivorship bias was assessed for (1) demographic differences in follow-up survey participation, (2) differences in initial adverse mental health symptom prevalences adjusted for demographic factors, and (3) differences in follow-up survey participation based on mental health experiences adjusted for demographic factors.

Results

Adjusting for demographics, individuals who completed only one or two out of four surveys had higher prevalences of anxiety and depression symptoms in April 2020 (e.g., one-survey versus four-survey, anxiety symptoms, adjusted prevalence ratio [aPR]: 1.30, 95% confidence interval [CI]: 1.08–1.55, P=0.0045; depression symptoms, aPR: 1.43, 95% CI: 1.17–1.75, P=0.00052). Moreover, individuals who experienced incident anxiety or depression symptoms had higher odds of not completing follow-up surveys (adjusted odds ratio [aOR]: 1.68, 95% CI: 1.22–2.31, P=0.0015, aOR: 1.56, 95% CI: 1.15–2.12, P=0.0046, respectively).

Conclusions

Our findings revealed significant survivorship bias among longitudinal survey respondents, indicating that restricting analytic samples to only respondents who provide repeated assessments in longitudinal survey studies could lead to overly optimistic interpretations of mental health trends over time. Cross-sectional or planned missing data designs may provide more accurate estimates of population-level adverse mental health symptom prevalences than longitudinal surveys.

Dynamic Expression of Imprinted Genes in the Developing and Postnatal Pituitary Gland

In mammals, imprinted genes regulate many critical endocrine processes such as growth, the onset of puberty and maternal reproductive behaviour. Human imprinting disorders (IDs) are caused by genetic and epigenetic mechanisms that alter the expression dosage of imprinted genes. Due to improvements in diagnosis, increasing numbers of patients with IDs are now identified and monitored across their lifetimes. Seminal work has revealed that IDs have a strong endocrine component, yet the contribution of imprinted gene products in the development and function of the hypothalamo-pituitary axis are not well defined. Postnatal endocrine processes are dependent upon the production of hormones from the pituitary gland. While the actions of a few imprinted genes in pituitary development and function have been described, to date there has been no attempt to link the expression of these genes as a class to the formation and function of this essential organ. This is important because IDs show considerable overlap, and imprinted genes are known to define a transcriptional network related to organ growth. This knowledge deficit is partly due to technical difficulties in obtaining useful transcriptomic data from the pituitary gland, namely, its small size during development and cellular complexity in maturity. Here we utilise high-sensitivity RNA sequencing at the embryonic stages, and single-cell RNA sequencing data to describe the imprinted transcriptome of the pituitary gland. In concert, we provide a comprehensive literature review of the current knowledge of the role of imprinted genes in pituitary hormonal pathways and how these relate to IDs. We present new data that implicate imprinted gene networks in the development of the gland and in the stem cell compartment. Furthermore, we suggest novel roles for individual imprinted genes in the aetiology of IDs. Finally, we describe the dynamic regulation of imprinted genes in the pituitary gland of the pregnant mother, with implications for the regulation of maternal metabolic adaptations to pregnancy.

Rationale for targeting complement in COVID-19

A novel coronavirus, SARS-CoV-2, has recently emerged in China and spread internationally, posing a health emergency to the global community. COVID-19 caused by SARS-CoV-2 is associated with an acute respiratory illness that varies from mild to the life-threatening acute respiratory distress syndrome (ARDS). The complement system is part of the innate immune arsenal against pathogens, in which many viruses can evade or employ to mediate cell entry. The immunopathology and acute lung injury orchestrated through the influx of pro-inflammatory macrophages and neutrophils can be directly activated by complement components to prime an overzealous cytokine storm. The manifestations of severe COVID-19 such as the ARDS, sepsis and multiorgan failure have an established relationship with activation of the complement cascade. We have collected evidence from all the current studies we are aware of on SARS-CoV-2 immunopathogenesis and the preceding literature on SARS-CoV-1 and MERS-CoV infection linking severe COVID-19 disease directly with dysfunction of the complement pathways. This information lends support for a therapeutic anti-inflammatory strategy against complement, where a number of clinically ready potential therapeutic agents are available.

A data resource from concurrent intracranial stimulation and functional MRI of the human brain

Mapping the causal effects of one brain region on another is a challenging problem in neuroscience that we approached through invasive direct manipulation of brain function together with concurrent whole-brain measurement of the effects produced. Here we establish a unique resource and present data from 26 human patients who underwent electrical stimulation during functional magnetic resonance imaging (es-fMRI). The patients had medically refractory epilepsy requiring surgically implanted intracranial electrodes in cortical and subcortical locations. One or multiple contacts on these electrodes were stimulated while simultaneously recording BOLD-fMRI activity in a block design. Multiple runs exist for patients with different stimulation sites. We describe the resource, data collection process, preprocessing using the fMRIPrep analysis pipeline and management of artifacts, and provide end-user analyses to visualize distal brain activation produced by site-specific electrical stimulation. The data are organized according to the brain imaging data structure (BIDS) specification, and are available for analysis or future dataset contributions on openneuro.org including both raw and preprocessed data.

Epidemiology of Anterior Cruciate Ligament Injury on Natural Grass Versus Artificial Turf in Soccer: 10-Year Data From the National Collegiate Athletic Association Injury Surveillance System

Background:

Anterior cruciate ligament (ACL) injury is prevalent among National Collegiate Athletic Association (NCAA) soccer players. Controversy remains regarding the effect of the surface type on the rate of ACL injury in soccer players, considering differences in sex, type of athletic exposure, and level of competition.

Hypothesis:

Natural grass surfaces would be associated with decreased ACL injury rate in NCAA soccer players. Sex, type of athletic exposure (match vs practice), and level of competition (Division I-III) would affect the relationship between playing surface and ACL injury rates.

Study Design:

Cohort study; Level of evidence, 3.

Methods:

Using the NCAA Injury Surveillance System (ISS) database, we calculated the incidence rate of ACL injury in men and women from 2004-2005 through 2013-2014 seasons. The incidence was normalized against athletic exposure (AE). Additional data collected were sex, athletic activity at time of injury (match vs practice), and level of competition (NCAA division) to stratify the analysis. Statistical comparisons were made by calculating incidence rate ratios (IRR). Statistical significance was set at an alpha of .05.

Results:

There were 30,831,779 weighted AEs during the study period. The overall injury rate was 1.12 ACL injuries per 10,000 AEs (95% CI, 1.08-1.16). Women comprised 57% of the match data (10,261 games) and 55% of practice data (26,664 practices). The overall injury rate was significantly higher on natural grass (1.16/10,000 AEs; 95% CI, 1.12-1.20) compared with artificial turf (0.92/10,000 AEs [95% CI, 0.84-1.01]; IRR, 1.26 [95% CI, 1.14-1.38]) (P < .0001). This relationship was demonstrated consistently across all subanalyses, including stratification by NCAA division and sex. The injury rate on natural grass (0.52/10,000 AEs; 95% CI, 1.11-1.26) was significantly greater than the injury incidence during practice on artificial turf (0.06/10,000 AEs; 95% CI, 0.043-0.096). Players were 8.67 times more likely to sustain an ACL injury during practice on natural grass compared with practice on artificial turf (95% CI, 5.43-12.13; P < .0001). No significant difference was found in injury rates between matches played on grass versus turf (IRR, 0.93; 95% CI, 0.84-1.03; P = .15).

Conclusion:

NCAA soccer players who practice on natural grass have increased risk of ACL injury compared with the risk of those practicing on an artificial surface, regardless of sex or NCAA division of play. No difference in risk of ACL injury between playing surfaces was detected during matches. Further research is necessary to examine the effect of multiple factors when evaluating the effect of the surface type on the risk of ACL injury in soccer players.

THU0217 UPADACITINIB MONOTHERAPY IN METHOTREXATE-NAÏVE PATIENTS WITH RHEUMATOID ARTHRITIS: RESULTS AT 72 WEEKS FROM SELECT-EARLY

Background:

Upadacitinib (UPA), an oral JAK inhibitor, demonstrated significant improvements in signs, symptoms, and structural inhibition as monotherapy vs methotrexate (MTX) in a randomized, controlled trial (RCT) of MTX-naive RA patients (pts) through 48 weeks (wks).1

Objectives:

To present the safety and effectiveness of UPA through 72 wks in an ongoing long-term extension (LTE) of the SELECT-EARLY RCT.

Methods:

SELECT-EARLY included 2 study periods: (1) a 48-wk double-blind, active comparator-controlled, with pts randomized to UPA monotherapy 15 or 30 mg once daily or MTX (titrated to 20 mg/wk by Wk8); (2) an LTE, up to 4 years. Pts received open-label treatment once the last pt reached Wk48. Rescue therapy was added (MTX, for UPA groups; UPA, for MTX group) to pts not achieving CDAI remission (≤2.8) at Wk26. Non-responder imputation (NRI) was used for missing data as well as for pts receiving rescue therapy. Treatment-emergent adverse events (TEAEs) are summarized per 100 pt yrs (PY) through the cut-off date of 21 Feb 2019, when all pts had reached Wk72. Data are censored at the time of MTX or UPA addition among rescued patients.

Results:

Of 945 pts randomized and treated, 781 (83%) completed Period 1. Of these, 775 entered the LTE, including 57 rescued pts (MTX, 33; UPA 15 mg, 17; UPA 30 mg, 7). A total of 52 (7%) pts discontinued during the LTE through the cut-off date (primary reasons: AEs [n=16, 2.1%]; consent withdrawal [n=12, 1.5%]; lost to follow-up [n=10, 1.3%]). Cumulative exposures to monotherapy with MTX, UPA 15 mg, and UPA 30 mg were 350.6, 389.5, and 383.9 PYs, respectively. Both UPA 15 mg and 30 mg as monotherapy was associated with continued statistically significant improvements in disease activity measures vs MTX monotherapy through 72 wks (Table). The safety profiles of the UPA 15 and 30 mg groups were comparable for total TEAEs and numerically higher than MTX. Serious TEAEs and TEAEs leading to discontinuation of study drug were comparable across all groups (Figure). Most AEs of special interest were comparable across MTX and UPA groups, with the exception of higher rates of herpes zoster, opportunistic infections, and elevated creatine phosphokinase among the UPA groups. Two pts receiving MTX monotherapy experienced a venous thromboembolic event, with one event reported on UPA 30 mg and none on UPA 15 mg. There were 12 deaths (including 3 non-treatment-emergent) due to varied causes.

Table.

Proportion of Patients at Week 72 (NRI)

Parameter (%)MTXMonotherapyUPA 15 mg QDMonotherapyUPA 30 mg QDMonotherapyACR20/50/7050/39/2671***/62***/47***72***/67***/54***DAS28(CRP) ≤3.2/<2.638/2863***/52***69***/61***CDAI ≤10/≤2.842/1960***/35***69***/44***Boolean Remission1329***33***

***,P<0.001 for differences between MTX and UPA 15 and UPA 30 mg groups.

MTX, methotrexate; UPA, upadacitinib; QD, once daily; ACR, American College of Rheumatology; DAS28(CRP), 28-joint disease activity index based on C-reactive protein; CDAI, clinical disease activity index.

Figure.

Treatment-emergent Adverse Events Through ≥72 Weeks (E/100 PYs, 95% CI).

Conclusion:

Long-term UPA monotherapy was associated with continued improvements in RA signs and symptoms vs MTX monotherapy through 72 wks, and only a small proportion of pts required MTX addition at Wk26. Through 72 wks of treatment, the safety profile of UPA monotherapy remained consistent with data reported through 48 wks.1

References:

[1]van Vollenhoven R,et al.Ann Rheum Dis2019;78(S):376.

Disclosure of Interests: :

Ronald van Vollenhoven Grant/research support from: AbbVie, Arthrogen, Bristol-Myers Squibb, GlaxoSmithKline, Lilly, Pfizer, and UCB, Consultant of: AbbVie, AstraZeneca, Biotest, Bristol-Myers Squibb, Celgene, GSK, Janssen, Lilly, Medac, Merck, Novartis, Pfizer, Roche, and UCB, Tsutomu Takeuchi Grant/research support from: Eisai Co., Ltd, Astellas Pharma Inc., AbbVie GK, Asahi Kasei Pharma Corporation, Nippon Kayaku Co., Ltd, Takeda Pharmaceutical Company Ltd, UCB Pharma, Shionogi & Co., Ltd., Mitsubishi-Tanabe Pharma Corp., Daiichi Sankyo Co., Ltd., Chugai Pharmaceutical Co. Ltd., Consultant of: Chugai Pharmaceutical Co Ltd, Astellas Pharma Inc., Eli Lilly Japan KK, Speakers bureau: AbbVie GK, Eisai Co., Ltd, Mitsubishi-Tanabe Pharma Corporation, Chugai Pharmaceutical Co Ltd, Bristol-Myers Squibb Company, AYUMI Pharmaceutical Corp., Eisai Co., Ltd, Daiichi Sankyo Co., Ltd., Gilead Sciences, Inc., Novartis Pharma K.K., Pfizer Japan Inc., Sanofi K.K., Dainippon Sumitomo Co., Ltd., Maureen Rischmueller Consultant of: Abbvie, Bristol-Meyer-Squibb, Celgene, Glaxo Smith Kline, Hospira, Janssen Cilag, MSD, Novartis, Pfizer, Roche, Sanofi, UCB, Ricardo Blanco Grant/research support from: Abbvie, MSD and Roche, Consultant of: Abbvie, Pfizer, Roche, Bristol-Myers, Janssen and MSD, Speakers bureau: Abbvie, Pfizer, Roche, Bristol-Myers, Janssen, Lilly and MSD, Ricardo Xavier Consultant of: AbbVie, Pfizer, Novartis, Janssen, Eli Lilly, Roche, Mark Howard Shareholder of: AbbVie Inc., Employee of: AbbVie Inc., Alan Friedman Shareholder of: AbbVie Inc, Employee of: AbbVie Inc, Yanna Song Shareholder of: AbbVie Inc., Employee of: AbbVie Inc., Vibeke Strand Consultant of: AbbVie, Amgen, Biogen, Celltrion, Consortium of Rheumatology Researchers of North America, Crescendo Bioscience, Eli Lilly, Genentech/Roche, GlaxoSmithKline, Hospira, Janssen, Merck, Novartis, Pfizer, Regeneron Pharmaceuticals, Inc., Sanofi, UCB

0420 Fibre-Specific White Matter Neurodegeneration is Associated with Long Sleep Duration After Stroke

Introduction

Long sleep duration in aging populations has recently been proposed as a key modifiable risk factor and sequela of stroke. It is unclear whether the pathogenesis of post-stroke sleep-wake dysfunction is due to focal infarction to regional sleep-wake hubs in the brain, or to accelerated whole-brain neurodegeneration. We utilise a novel technique known as whole-brain fixel-based analyses (FBA) to characterize the first fibre-specific white-matter markers of long sleep duration after stroke.

Methods

We included 98 radiologically-confirmed ischemic stroke participants (67 male; mean age = 68) and 40 age-matched controls with no history of neurodegenerative disease imaged 3-months post-stroke. Sleep-wake was measured for one week using BodyMedia’s SenseWear armband. Diffusion-weighted MRI (DWI) were acquired using echoplanar imaging and preprocessed using MRtrix3. FBA were employed to identify tracts with altered white-matter fibre-density and fibre-bundle cross-section (FDC) in the long sleep duration (&gt;8 hr, n=20) and normal sleep duration groups (between &gt;6 hr and &lt;8 hr, n=59) compared to controls. Statistical comparisons of FDC between groups were performed at each FDC fixel by a general linear model controlling for age, sex, and intracranial volume.

Results

Stroke participants with long sleep duration exhibited significant FDC reductions of up to 40% within the cortico-ponto-cerebellar tract when compared to healthy controls (family-wise-error-corrected p=&lt;0.05). Bilateral pontine degeneration was observed at the decussation of the superior cerebellar peduncles. Stroke participants with normal sleep duration exhibited diffuse whole-brain degeneration most apparent along the corpus collosum and cingulum; however, the distribution was less extensive relative to long sleepers (i.e., no cortico-cerebellar projections) and percentage effect reductions did not exceed 20%.

Conclusion

Long sleep duration after stroke is associated with cortico-ponto-cerebellar degeneration when compared to controls or stroke-participants with normal sleep duration. Excessively long sleep may contribute to post-stroke neurodegeneration beyond the effects of direct infarction and may be a modifiable pharmacological target for abating brain volume loss after stroke.

Support

This work was supported by the National Health and Medical Research Council project grant (APP1020526), the Brain Foundation, Wicking Trust, Collie-Trust, and Sidney and Fiona Myer Family Foundation. NE was supported by the Australian Research Council DECRA award DE180100893.

Effects of route of administration on oxytocin-induced changes in regional cerebral blood flow in humans

Could nose-to-brain pathways mediate the effects of peptides such as oxytocin (OT) on brain physiology when delivered intranasally? We address this question by contrasting two methods of intranasal administration (a standard nasal spray, and a nebulizer expected to improve OT deposition in nasal areas putatively involved in direct nose-to-brain transport) to intravenous administration in terms of effects on regional cerebral blood flow during two hours post-dosing. We demonstrate that OT-induced decreases in amygdala perfusion, a key hub of the OT central circuitry, are explained entirely by OT increases in systemic circulation following both intranasal and intravenous OT administration. Yet we also provide robust evidence confirming the validity of the intranasal route to target specific brain regions. Our work has important translational implications and demonstrates the need to carefully consider the method of administration in our efforts to engage specific central oxytocinergic targets for the treatment of neuropsychiatric disorders.

Generalizability of A Neural Network Model for Circadian Phase Prediction in Real-World Conditions

A neural network model was previously developed to predict melatonin rhythms accurately from blue light and skin temperature recordings in individuals on a fixed sleep schedule. This study aimed to test the generalizability of the model to other sleep schedules, including rotating shift work. Ambulatory wrist blue light irradiance and skin temperature data were collected in 16 healthy individuals on fixed and habitual sleep schedules, and 28 rotating shift workers. Artificial neural network models were trained to predict the circadian rhythm of (i) salivary melatonin on a fixed sleep schedule; (ii) urinary aMT6s on both fixed and habitual sleep schedules, including shift workers on a diurnal schedule; and (iii) urinary aMT6s in rotating shift workers on a night shift schedule. To determine predicted circadian phase, center of gravity of the fitted bimodal skewed baseline cosine curve was used for melatonin, and acrophase of the cosine curve for aMT6s. On a fixed sleep schedule, the model predicted melatonin phase to within ± 1 hour in 67% and ± 1.5 hours in 100% of participants, with mean absolute error of 41 ± 32 minutes. On diurnal schedules, including shift workers, the model predicted aMT6s acrophase to within ± 1 hour in 66% and ± 2 hours in 87% of participants, with mean absolute error of 63 ± 67 minutes. On night shift schedules, the model predicted aMT6s acrophase to within ± 1 hour in 42% and ± 2 hours in 53% of participants, with mean absolute error of 143 ± 155 minutes. Prediction accuracy was similar when using either 1 (wrist) or 11 skin temperature sensor inputs. These findings demonstrate that the model can predict circadian timing to within ± 2 hours for the vast majority of individuals on diurnal schedules, using blue light and a single temperature sensor. However, this approach did not generalize to night shift conditions.

The effects of perceived memory ability on memory conformity for an event

The present study investigated the impact of false feedback about individual memory performance relative to a co-witness on susceptibility to misinformation. Pairs of participants (n = 130; 65 pairs) completed a visual memory test and received false feedback on their performance indicating that the memory ability of one participant in the pair was stronger relative to the other participant. The participants then viewed a crime video (either the same video or one slightly different to their partner) and discussed their memories for this video with their co-witness. Participants completed a semi-cued recall task and a recognition test about the video. False memory feedback indicating lower relative performance was associated with significant increases in sensitivity to misinformation. The results are discussed in reference to the potential contributions that co-witnesses' perceptions of both their partner's reliability and their own reliability have on event memory.

New insights for the valorisation of glycerol over MgO catalysts in the gas-phase

Aqueous glycerol solutions of up to 50 wt% were reacted over magnesium oxide catalysts at temperatures greater than 300 °C, the reactivity of which was compared to catalyst-free reactions.

Behind the wheel safety in palliative care: a literature review

BACKGROUND

Driving is a complex activity that requires physical abilities and adequate executive and cognitive functioning. There is concern among specialist palliative care services about patients continuing to drive despite having progressive incurable illnesses, comorbidities and medications to manage their symptoms.

OBJECTIVES

To determine the quality of literature available about driving that would apply to palliative care patients, specifically in relation to road test or simulated driving scores and neurocognitive testing.

METHOD

A literature search based on systematic principles was conducted on the Ovid Medline, PsycINFO, Embase and CINAHL database up to 14 October 2018. Patient populations with life-limiting illness such as cancer, cardiorespiratory and neurological diagnoses were included.

RESULTS

37,546 articles were screened. 14 articles satisfied the search criteria. Six studies focused on patients with multiple sclerosis (MS). Four studies investigated driving ability in patients with Huntington's disease. The remaining four articles studied heart failure, chronic obstructive pulmonary disease (COPD), interstitial lung disease and patients with cancer. In the road test studies, 19%-47% of patients with MS and Huntington's failed the behind-the-wheel assessment. The simulated driving scores in seven studies demonstrated statistically significant differences in errors made between study participants and controls. Divided attention was found in seven studies to be associated with poorer road-test or simulated driving ability.

CONCLUSIONS

This review highlights the scarcity of studies available for patients who would be known to palliative care services. For most patient groups, a battery of neurocognitive tests combined with a road-test or simulated driving assessment is still considered the best practice in determining driving safety.

The Differential Effects of Regular Shift Work and Obstructive Sleep Apnea on Sleepiness, Mood and Neurocognitive Function

STUDY OBJECTIVES

To assess whether poor sleep quality experienced by regular shift workers and individuals with obstructive sleep apnea (OSA) affects neurobehavioral function similarly, or whether the different etiologies have distinct patterns of impairment.

METHODS

Thirty-seven shift workers (> 24 hours after their last shift), 36 untreated patients with OSA, and 39 healthy controls underwent assessment of sleepiness (Epworth Sleepiness Scale [ESS]), mood (Beck Depression Index, State Trait Anxiety Inventory [STAI], Profile of Mood States), vigilance (Psychomotor Vigilance Task [PVT], Oxford Sleep Resistance Test [OSLER], driving simulation), neurocognitive function (Logical Memory, Trails Making Task, Digit Span Task, Victoria Stroop Test) and polysomnography.

RESULTS

Sleepiness (ESS score; median, interquartile range) did not differ between the OSA (10.5, 6.3-14) and shift work (7, 5-11.5) groups, but both had significantly elevated scores relative to the control group (5, 3-6). State anxiety (STAI-S) was the only mood variable that differed significantly between the OSA (35, 29-43) and shift work (30, 24-33.5) groups, however both demonstrated several mood deficits relative to the control group. The shift work and control groups performed similarly on neurobehavioral tasks (simulated driving, PVT, OSLER and neurocognitive tests), whereas the OSA group performed worse. On the PVT, lapses were significantly greater for the OSA group (3, 2-6) than both the shift work (2, 0-3.5) and control (1, 0-4) groups.

CONCLUSIONS

Shift workers and patients with OSA had similar sleepiness and mood deficits relative to healthy individuals. However, only the patients with OSA showed deficits on vigilance and neurocognitive function relative to healthy individuals. These findings suggest that distinct causes of sleep disturbance likely result in different patterns of neurobehavioral dysfunction.