Challenge of achieving truly individualised informed consent in therapeutic endoscopy

Objective

Guidance covering informed consent in endoscopy has been refined in the UK following the obstetric case of Nadine Montgomery, and in light of updated General Medical Council guidance. All risks likely to be material to the patient must be explored, as well as alternatives to the procedure. Despite this, departments and endoscopists still struggle to meet the current standards. In this article, we explore the challenges encountered in achieving individualised consent in therapeutic endoscopy through real-life scenarios.

Methods

Five realistic therapeutic endoscopy (hepatobiliary) scenarios are described, followed by presentation of possible or ideal approaches, with references related to existing literature in this field.

Results

The vignettes allow consideration of how to approach difficult consent challenges, including anxiety and information overload, urgency during acute illness, failure to disclose the risk of death, the role of trainees and intraprocedural distress under conscious sedation.

Conclusions

The authors conclude that a high degree of transparency is required while obtaining consent for therapeutic endoscopy accompanied by full documentation, involvement of relatives in nearly all cases, and clarity around the presence of trainees who may handle the scope. A greater focus on upskilling trainees in the consent process for therapeutic endoscopy is required.

Improving compliance with the duty of candour: 5-year experience within an endoscopy department

BACKGROUND AND AIMS

Duty of candour (DoC) is the requirement for timely and transparent disclosure after significant healthcare-related harm. We describe the experience of DoC following patient safety incidents (PSI) related to endoscopy, and offer reflections on improving compliance across other areas of clinical medicine.

METHODS

PSI notified on an electronic reporting system (DATIX) from January 2015 to June 2021 were identified. Details of the procedure, level of harm and evidence of both verbal and written DoC were collected and analysed.

RESULTS

33 PSI were notified on DATIX. A verbal apology was documented in 23 cases (70%) and a written notification was offered or sent to in 20 (61%). Verbal apologies were timely, while written DoC was delayed. PSI reporting and verbal DoC increased over this period. Patients or families were invited to present questions for investigation in all 20 with written DoC. There were two claims for compensation during this period.

CONCLUSION

DoC remains challenging for clinicians and patient safety teams 8 years after its inception. Improved compliance requires promotion by clinical leaders and high levels of awareness among clinical and nursing staff, a culture of openness and importantly, sustained administrative support to ensure that downstream actions are not overlooked.

Luetic (syphilitic) hepatitis: the great imitator persists in the 21st century

A male patient in his 20s was referred to the hepatology team with jaundice, pruritus and drenching night sweats. Investigations revealed an acute hepatitis with negative autoimmune and viral serology. Liver biopsy demonstrated severe pan-lobular hepatitis, and an extended diagnostic screen included a positive treponemal antibody test, with an RPR titre of 64, indicating active syphilis infection. He was treated with 2.4 million units of intramuscular benzathine penicillin as a single dose which led to complete resolution of the abnormal liver tests and symptoms. Diagnostic and management challenges, including the role of good history taking, appropriate investigations and role of multidisciplinary team, are discussed.

Achieving Improving Quality in Liver Services (IQILS) accreditation - lessons learned from one unit's experience

In 2017 the Royal College of Physicians launched a voluntary accreditation process supported by British Association for the Study of the Liver (BASL) and the British Society of Gastroenterologists (BSG) to improve the quality and consistency of liver services across the UK and Ireland. This article describes the approach that we took and the challenges that we met on the way to achieving accreditation.

The Liverpool alcohol-related liver disease algorithm identifies twice as many emergency admissions compared to standard methods when applied to Hospital Episode Statistics for England

BACKGROUND

Emergency admissions in England for alcohol-related liver disease (ArLD) have increased steadily for decades. Statistics based on administrative data typically focus on the ArLD-specific code as the primary diagnosis and are therefore at risk of excluding ArLD admissions defined by other coding combinations.

AIM

To deploy the Liverpool ArLD Algorithm (LAA), which accounts for alternative coding patterns (e.g., ArLD secondary diagnosis with alcohol/liver-related primary diagnosis), to national and local datasets in the context of studying trends in ArLD admissions before and during the COVID-19 pandemic.

METHODS

We applied the standard approach and LAA to Hospital Episode Statistics for England (2013-21). The algorithm was also deployed at 28 hospitals to discharge coding for emergency admissions during a common 7-day period in 2019 and 2020, in which eligible patient records were reviewed manually to verify the diagnosis and extract data.

RESULTS

Nationally, LAA identified approximately 100% more monthly emergency admissions from 2013 to 2021 than the standard method. The annual number of ArLD-specific admissions increased by 30.4%. Of 39,667 admissions in 2020/21, only 19,949 were identified with standard approach, an estimated admission cost of £70 million in under-recorded cases. Within 28 local hospital datasets, 233 admissions were identified using the standard approach and a further 250 locally verified cases using the LAA (107% uplift). There was an 18% absolute increase in ArLD admissions in the seven-day evaluation period in 2020 versus 2019. There were no differences in disease severity or mortality, or in the proportion of admissions with decompensation of cirrhosis or alcoholic hepatitis.

CONCLUSIONS

The LAA can be applied successfully to local and national datasets. It consistently identifies approximately 100% more cases than the standard coding approach. The algorithm has revealed the true extent of ArLD admissions. The pandemic has compounded a long-term rise in ArLD admissions and mortality.

Immune checkpoint inhibitor-related cholangiopathy: Novel clinicopathological description of a multi-centre cohort

BACKGROUND AND AIMS

Cholestatic liver dysfunction is common in immune-related hepatitis (irH) during treatment with immune checkpoint inhibitors (CPI) for malignancy. We investigated the spectrum of bile duct injury and associated natural history in this cohort.

METHOD

Clinical, laboratory, radiological and histopathological data in patients with evidence of bile duct injury during CPI treatment from 2018 to 2020 was collected in three tertiary hospitals.

RESULTS

In this study, ten patients with confirmed bile duct disease were identified. Pembrolizumab was most commonly implicated (8/10). Median CPI cycles prior to bile duct injury was 6. Median alanine aminotransferase and alkaline phosphatase were 225 U/L and 1549 U/L respectively. Clinical jaundice was seen in 6/10 and radiological evidence of bile duct pathology in 8/10. Of five patients, who had liver biopsy, three cases (including two cases with normal MRCP) showed primary sclerosing cholangitis (PSC) like changes with periductal fibrosis. All patients were treated first-line with prednisolone following cessation of CPI, three with mycophenolate mofetil and one with tacrolimus, with clinical response in four patients. Five patients died after a mean follow-up of 27 weeks; cause of death was primarily related to progression of malignancy.

CONCLUSION

Within this heterogeneous cohort, we identified that CPI-related cholangiopathy responded poorly to immunosuppression and potentially progressed to bile duct loss. Thorough radiological and histological assessment is recommended, as identification of the cholangiopathy-associated phenotype may permit more informed advice regarding prognosis. Further data is required to determine detailed immunological characterisation in order to identify individuals at an increased risk of developing cholangiopathy.

Diagnostic, therapeutic and prognostic challenges in a jaundiced patient treated with a checkpoint inhibitor

Immune check point inhibitors (CPI) are now standard treatment for numerous metastatic malignancies. They are associated with hepatological adverse reactions, the most common of which is immune related hepatitis (irH). Bile duct injury is rarely described. We present the case of a 42 year old male with metastatic non-small cell lung cancer (NSCLC) treated with atezolizumab who developed severe liver dysfunction with biochemical and radiological features of a cholangiopathy. Establishing the final diagnosis proved exceptionally difficult due to multiple potential aetiologies. In this article the diagnostic, prognostic and management challenges including the role of liver biopsy, biliary drainage and immune suppression are explored. Cholangiopathy related to CPI is an emerging clinical entity that requires coordinated, expert care and further research.

Hepatopulmonary syndrome as the first and only manifestation of cirrhosis in a patient with hypopituitarism

Hepatopulmonary syndrome (HPS) is characterised by the development of intrapulmonary arteriovenous blood shunts and vascular dilatation with consequent hypoxaemia, usually in the context of end-stage liver disease (ESLD). The estimated incidence of HPS in ESLD has been reported to be 13%-47%. Chronic liver disease has been described in patients with hypothalamic-pituitary dysfunction, mainly in the form of non-alcoholic fatty liver disease due to metabolic syndrome, with occasional progression to cirrhosis. We report a challenging case of a 27-year-old man with a background of hypopituitarism with no known liver disease who presented with progressive dyspnoea and hypoxaemia and was eventually diagnosed with severe HPS.

A three-tiered approach to investigating patient safety incidents in endoscopy: 4-year experience in a teaching hospital

Background and study aims  Patient safety incidents (PSIs) in endoscopy, although infrequent, can lead to significant morbidity or mortality. There is no commonly agreed strategy to investigate PSIs. We describe a three-tiered approach to investigation to facilitate appropriate action, shared learning, and timely disclosure to patients as mandated in the UK health system by the Duty of Candor (DoC). Methods  PSIs were identified prospectively over a 3-year, 7-month period in a large teaching hospital. Level of investigation was agreed by a group of three senior clinicians. Levels of investigation comprised: 1) rapid desktop review; 2) departmental "mini-root cause analysis" (mini-RCA, developed internally); and 3) hospital-level RCA or mortality review. Results  Of 63006 procedures there were 73 reported cases of significant harm. Eleven resulted in death. Thirty PSIs were related to hepatobiliary endoscopy, 17 to lower gastrointestinal endoscopy, and 26 to upper gastrointestinal endoscopy. Hospital-level RCA was performed in six cases, mini-RCA/mortality review in 14, and 53 were examined by the endoscopy lead. Findings were presented in an endoscopy user group (EUG) meeting. There was learning in relation to informed consent, pre-procedural radiology reviews, pre-procedural treatment, escalation planning, teamwork and communication, preparation of equipment, and recognition of delayed complications. Open and honest communication with patients and relatives was facilitated. Conclusions  The introduction of an endoscopy-tailored investigation tool, the mini-RCA, as part of a three-tiered approach, facilitated investigation, appropriate action, learning, and disclosure after PSIs.

What became of the 'eyes and the ears'?: exploring the challenges to reporting poor quality of care among trainee medical staff

The importance of trainee medical staff in alerting Trusts to patient safety risks and low-quality care was established by the Francis Report, yet many remain hesitant about speaking up. Known barriers include lack of feedback, sceptical attitudes to the likelihood of change and fear of consequences. The author explores other factors including moral orientation in the workplace, role modelling by senior clinicians, discontinuity, 'normalisation of deviance', human reactions to burnout/moral injury, loyalty and the spectrum of motivation. The issues of absent feedback and fear are discussed in detail. Challenges met by those receiving reports are also described, such as how to collate soft intelligence, putting concerns into context (the 'bigger picture') and stewardship of resources. Initiatives to encourage reporting of trainees' concerns such as speak up guardians, 'Speak Up for Safety' campaign and simulation training are described. A proposal to embed proactive intelligence-gathering arrangements is presented.

'Case of the month': a novel way to learn from endoscopy-related patient safety incidents

Patient safety incidents (PSIs) are unintended or unexpected incidents which can or do lead to patient harm. The Joint Advisory Group on Gastrointestinal Endoscopy (JAG) acknowledges that PSIs should be reviewed by endoscopy services and learning shared among staff. It is recognised that more could be done to promote shared learning as outlined by the JAG 'Improving Safety and Reducing Error in Endoscopy' strategy. The 'Case of the month' series aims to provide a broad selection of cases and subsequent learning that can be shared among services and their workforce. This review focuses on five case vignettes that highlight a variety of PSIs in endoscopy. A structured approach, based on incident analysis methodology, is applied to each case to categorise PSIs and develop learning points. Learning is directed toward the individual, team and healthcare organisation. A selection of methods to disseminate learning at local, regional and national levels are also described.

Valuing experiential knowledge in health promotion: a new method to build up knowledge in France

Issue

Effectiveness analyses of health promotion (HP) interventions (HPI) abound nowadays in France, but few research details how HPI work, nor explains how practitioners can translate conclusive evidence from the literature into action. Furthermore, large amounts of experiential knowledge remain untapped and undervalued. To close these gaps, a national multidisciplinary committee, comprising public officials, academics and practitioners, has worked since 2016 at designing a new method to build up knowledge in HP.

CEKHP

The method aims at Capitalizing, collecting and circulating Experiential Knowledge in HP (CEKHP).

Committee members first investigated methods used in other countries to synthesize and share practical evidence, then drafted and experimented CEKHP in 11 different settings to test its relevance and applicability.

Results

Key components of CEKHP are: 1/CEKHP consists in in-depth semi-structured interviews and offers a guideline template adjustable for various contexts and multiple public health issues (behaviors, environments, etc.); 2/a trained outsider, mastering 7 core competencies, must conduct CEKHP; 3/CEKHP includes a framework for reporting key mechanisms that influence HPI outcomes. Detailed mechanisms include: context, partnerships, key steps, barriers and levers, ethics, theoretical foundations (intervention models, evidence-based literature, etc.), transferability. A guidebook and a toolkit are published in 2020. CEKHP successfully disseminates within the French HP community. It is currently used as the main data collection tool in a research project investigating health promoting sports clubs (PROCeSS) and in a practice-focused project documenting tobacco prevention (DCAP).

Lessons

Practitioners benefit from access to knowledge on how HPI work. CEKHP offers new tools to value and disseminate experiential knowledge. Given that policymakers increasingly prioritize funding in France on documented HPI, providing such tools and training is crucial.

Key messages

CEKHP offers a new method in the French context that has proven fruitful in various settings, for various public health issues, and can be useful to practitioners and researchers alike. Building up experiential knowledge with and for practitioners can be effective at both documenting practices and helping them gain new skills and better understanding of their interventions.

Joining forces to build up knowledge in health promotion: lessons from a French coalition initiative

Issue

French public health authorities increasingly rationalize access to public funding, favoring evidence-based programs. Health Promotion (HP) interventions are especially urged to prove their efficiency in this context. To tackle this issue, HP practitioners hold experiential knowledge (EK) that proves useful to assess both the complexity and efficiency of HP interventions. United by this conviction in a multidisciplinary coalition, HP experts from various backgrounds came together five years ago to promote Experiential Knowledge in HP (EKHP) in France.

A national committee to promote EKHP

670 HP practitioners were surveyed in 2016. Results reported vast amounts of under-documented and often untapped field expertise in HP and numerous obstacles regarding access to scientific literature or systematic reviews. Consequently, the coalition launched a National Committee for EKHP, meeting 5 times a year since 2016. Members of 6 national HP organizations, of 4 regional HP institutes, national and local public health administrators, researchers, consultants and field workers participate. Steered by the French Society for Public Health and the National Federation for Health Education and Promotion, the committee devised a threefold action plan: 1/ advocate EKHP in all relevant institutional spaces, 2/ develop tools for EKHP, 3/ mobilize for EKHP at the local level.

Results

The committee designed a method for capitalizing, collecting and circulating EK and published in 2020 a guidebook and a toolkit. French Public Health authorities agreed to share EK nationwide on their online portal. Dissemination within the French HP community has started, through the committee members' networks, and will be amplified with a training program launched in 2021 at the National School of Public Health.

Lessons

Attention must be brought to HP practitioners’ experiential knowledge, both to recognize HP practitioners' expertise and to help improve the understanding of how HP interventions work.

Key messages

Experiential knowledge in HP remains undervalued and untapped in France. Dedicated practitioners, policymakers and researchers formed a multidisciplinary committee to promote and disseminate EKHP. A multilevel strategy combining advocacy and tool building can be effective at promoting experiential knowledge. A multidisciplinary coalition provided the necessary context-specific levers in France.

Deaf-Blind Clients and Vocational Rehabilitation: Practical Guidelines for Counselors

This article presents suggestions and proved effective strategies for determining the eligibility of, conducting diagnostic workups for, and providing vocational rehabilitation services to deaf-blind individuals. It emphasizes that the optimal rehabilitation process for such clients begins before the clients transfer from educational programs.

SAT0213 IMPACT OF FLARES ON HEALTHCARE RESOURCE USAGE AND PROS IN SYSTEMIC LUPUS ERYTHEMATOSUS PATIENTS

Background:

The effect of flares on healthcare resource usage and patient-reported outcome scores in SLE patients is not well quantified.

Objectives:

To understand how flares impact healthcare resource utilization (HCRU) and patient-reported outcomes amongst an international real-world dataset of SLE patients.

Methods:

The Adelphi Real World 2015 Lupus Disease Specific Programme (DSP) is a cross-sectional study of 263 rheumatologists in the US and EU5. Rheumatologists were asked to complete patient record forms (PRFs) for the next 5 prospectively consulting SLE patients; the same patients were asked to complete patient self-completion (PSC) forms describing how SLE affected them. PRFs collected data pertaining to the patient’s diagnosis, disease history, current clinical outcomes, treatment and management history. PSCs collected similar data and included patient-reported outcome measures (PROs) to assess humanistic burden. Propensity score matching was used to assess differences in HCRU and health status between SLE patients who had flared (physician defined) in the last 12 months and those who had not. Matching variables were patient ethnicity, time since diagnosis, and severity at diagnosis. Data were extracted from 1278 PRFs, and 591 PSCs. Propensity score matching was carried out on two matched groups of 408 patients.

Results:

Demographic data are reported in Table 1. Propensity score matching showed patients who flared in the last 12 months experienced significantly greater hospitalizations, visits to the ER, and total HCP consults in the last 12 months. Significantly greater drug burden lower physician and patient satisfaction, lower EQ-5D score (worse health status), lower FACIT Fatigue score (greater fatigue), and greater overall work impairment (Table 2) were also observed.

Table 1.

Demographic data

VariableFlared in last 12 monthsNot flared in the last 12 monthsMean age (years)41.842.4% Female86.087.0% White/Caucasian66.276.3Mean years diagnosed5.95.4Table 2.

Propensity score matching results

Outcome variableFlared meanNot flared meanCoefficient95% CIp-valueHospitalisations in last 12 months24.267.630.17[0.12 – 0.21]<0.001Emergency department visits in last 12 months20.834.190.17[0.12 – 0.21]<0.001Number of tests in last 12 months46.4938.907.59[3.74 – 11.44]<0.001Number of current medications2.762.190.57[0.43 – 0.72]<0.001Physician satisfied64.4686.63-0.22[-0.28 – -0.17]<0.001Patient satisfied69.2985.09-0.16[-0.24 – -0.08]<0.001EQ-5D-3L0.720.83-0.11[-0.15 – -0.07]<0.001FACIT Fatigue30.0636.48-6.42[-8.5 – -4.3]<0.001WPAI overall percentage work impairment42.7430.2312.5[7.51 – 17.50]<0.001

Conclusion:

The analysis of international real-world data confirmed that SLE patients who flared in the last year represent a greater burden on healthcare resource and demonstrate significantly worse health status, greater fatigue, lower patient and physician satisfaction and greater overall work impairment compared with non-flaring patients. There is a need for more effective treatments in this patient population to reduce patient and healthcare burden.

Study funded by Johnson and Johnson.

Disclosure of Interests:

Zahi Touma Consultant of: Consultant for Janssen, Ben Hoskin Consultant of: Consultant for Janssen, Christian Atkinson Consultant of: Consultant for Janssen, David Bell Consultant of: Janssen, Olivia Massey Consultant of: Janssen, Jennifer H. Lofland Employee of: Janssen, Pamela Berry Employee of: Janssen, Chetan Karyekar Shareholder of: Johnson & Johnson, Consultant of: Janssen, Employee of: Janssen Global Services, LLC. Previously, Novartis, Bristol-Myers Squibb, and Abbott Labs., Karen Costenbader Grant/research support from: Merck, Consultant of: Astra-Zeneca

AB1332-HPR ASSESSING THE PATIENT EXPERIENCE OF LUPUS NEPHRITIS: DEVELOPMENT OF A CONCEPTUAL MODEL AND REVIEW OF EXISTING PATIENT-REPORTED OUTCOME (PRO) MEASURES

Background:

Lupus nephritis (LN) is an autoimmune disease characterized by inflammation of the kidneys as a result of systemic lupus erythematosus (SLE). Approximately 50% of SLE patients will develop LN, which is considered to be one of the most severe manifestations of SLE and the leading cause of morbidity and mortality in SLE. While there is ample existing evidence on disease experience and PROs used in extra-renal SLE, little research has been done in LN. Qualitative interviews with patients can help identify concepts that are both important and relevant to the patient. In order to effectively evaluate treatment benefit, it is critical that PRO measures used to assess such concepts and define clinical trial endpoints are fit for purpose and have strong evidence of content validity in the specific context of use.

Objectives:

The objective of this study was to understand the patient experience of LN and to identify and characterize the signs and symptoms of LN and their impact on health-related quality of life (HRQoL) through the development of a disease-specific conceptual model. This model was then used to evaluate the content validity of existing PRO measures available for use in LN.

Methods:

A structured literature search was conducted in Medline, Embase and PsycINFO to identify qualitative research articles documenting the patient experience of LN. PRO measures developed or commonly used to assess patient experiences of LN were also identified. Semi-structured concept elicitation interviews were conducted with 15 adult patients in the US with a clinician-confirmed diagnosis of LN (defined in accordance with established clinical guidelines). Supplementary qualitative data were also collected from a review of publicly available online blogs/forums. Findings were used to inform the development of a conceptual model detailing the impact of LN signs, symptoms and HRQoL and evaluate the validity of existing measures used within LN.

Results:

Searches revealed a paucity of qualitative research conducted with LN patients, supporting the need for prospective research in LN. Consistent with existing literature in SLE, the core signs and symptoms identified from the qualitative literature review, interviews and blog/forum review included joint pain, fatigue, joint stiffness, swelling (particularly in the extremities) and skin rashes. LN patients also reported urinary frequency, urgency, foamy urine and blood in their urine. Disease impact on physical functioning, activities of daily living, emotions, social life, work/finances and sleep were reported. PRO measures commonly used to evaluate patient experiences in LN included the SF-36, LupusQOL, LupusPRO, SLE Symptom Checklist, KDQoL and KSQ. Conceptual mapping of instruments against the newly developed conceptual model (Figure 1) highlighted that no single measure provides a comprehensive assessment of all symptoms/impact important to LN patients. Furthermore, items are largely focused on impact of symptoms with few items on symptom severity.

Figure 1.

Conceptual model of lupus nephritis symptoms and associated impacts

Conclusion:

The presentation of signs and symptoms in LN patients appears similar to those reported in extra-renal SLE populations, with the addition of swelling and urinary symptoms. Qualitative research with LN patients guided the development of a comprehensive LN conceptual model outlining the disease experience from the patients’ perspective. These insights can be useful to inform PRO measurement strategies for clinical trials in LN.

Acknowledgments:

With thanks to Dr. Betty Diamond and Dr. David Wofsy for their collaboration and helpful insights

Disclosure of Interests:

Pamela Berry Employee of: Janssen, Kate Burrows Consultant of: Adelphi Values a health outcomes research company commissioned by Janssen to conduct the research reported in this abstract, Rebecca Hall Consultant of: Adelphi Values a health outcomes research company commissioned by Janssen to conduct the research reported in this abstract., Adam Gater Consultant of: Adelphi Values a health outcomes research company commissioned by Janssen to conduct the research reported in this abstract, Helena Bradley Consultant of: Adelphi Values a health outcomes research company commissioned by Janssen to conduct the research reported in this abstract, Amy Ward Consultant of: Adelphi Values a health outcomes research company commissioned by Janssen to conduct the research reported in this abstract, Chloe Tolley Consultant of: Adelphi Values a health outcomes research company commissioned by Janssen to conduct the research reported in this abstract, Patricia Delong Employee of: Janssen, Elizabeth C Hsia Shareholder of: Johnson & Johnson, Employee of: Janssen Research & Development, LLC

THU0246 DIAGNOSTIC CLUSTER PROFILING OF PATIENTS IN A REAL-WORLD DATA SET WITH SYSTEMIC LUPUS ERYTHEMATOSUS

Background:

Previous systemic lupus erythematosus (SLE) studies have identified potential clusters of SLE clinical manifestations post diagnosis.

Objectives:

To describe the presentation of SLE at diagnosis across different cohorts of patients and describe management and outcomes after diagnosis within clusters.

Methods:

Cross-sectional study of 263 rheumatologists in the US and EU5. Data were collected from the Adelphi Real World 2015 Lupus Disease Specific Programme. Rheumatologists completed patient record forms (PRFs) for the next 5 prospectively consulting SLE patients; these patients completed patient self-completion (PSC) forms describing how SLE affected them. PRF data includes patient’s characteristics and management history. PSCs focused on similar data collection, including patient reported outcome measures on the humanistic burden. Age at diagnosis, symptoms at diagnosis, organ involvement at diagnosis, and severity at diagnosis were used as covariates in a latent cluster analysis.

Results:

Data were extracted from 1376 PRFs. Cluster analysis resulted in up to 6 clusters, and disease understanding led to the selection of a 4-cluster solution.

Cluster 1 displayed the mildest disease, characterised by joint involvement, while cluster 2 displayed more skin involvement in conjunction with joint. Cluster 3 were characterised by renal involvement and cluster 4 had skin and joint involvement, but also high constitutional and haematological involvement at diagnosis (Table 1).

Table 1

Cluster analysis

ClustersOrgan involvement at diagnosis, n (%)Overall(n=1304)1(n=210)2(n=493)3(n=162)4(n=439)p-valueMusculoskeletal1145 (87.8)174 (82.9)444 (90.1)134 (82.7)393 (89.5)0.0065Mucocutaneous898 (68.9)5 (2.4)397 (80.5)95 (58.6)401 (91.3)<0.0001Neuropsychiatric87 (6.7)19 (9.0)9 (1.8)16 (9.9)43 (9.8)<0.0001Cardiorespiratory176 (13.5)36 (17.1)14 (2.8)22 (13.6)104 (23.7)<0.0001Gastrointestinal44 (3.4)8 (3.0)14 (2.8)8 (4.9)14 (3.2)0.6115Opthalmic47 (3.6)020 (4.1)10 (6.2)17 (3.9)0.0102Renal213 (16.6)15 (7.1)9 (1.8)162 (100)27 (6.2)<0.0001Constitutional425 (32.6)45 (21.4)89 (18.1)55 (34.0)236 (53.8)<0.0001Haematological452 (34.7)64 (30.5)22 (4.5)80 (49.4(286 (65.1)<0.0001Severity at diagnosis, n (%)Mild209 (16.0)55 (26.2)99 (20.1)1 (0.6)54 (12.3)<0.0001Moderate806 (61.8)122 (58.1)324 (65.7)75 (46.3)285 (64.9)Severe289 (22.2)33 (15.7)70 (14.2)86 (53.1)100 (22.8)

Significant between-cluster differences were observed when comparing outcomes; cluster 4 have been diagnosed longest (mean weeks diagnosed 354.6 v. 1: 232.6, 2: 228.7, 3: 338.2, p<0.0001). Cluster 3 consulted more in the last 12 months (mean number of visits 7.9 vs. 1: 5.7, 2: 6.3, 4: 7.6).

Significant differences were also observed between clusters in relation to current treatment proportions: corticosteroid (highest cluster 3: 78.4%), immunosuppressant (highest cluster 3: 75.3%), biologic DMARD (highest cluster 4: 17.8%) and antidepressant (highest cluster 4: 4.1%).

Conclusion:

This study demonstrates the heterogeneity of SLE at diagnosis and highlights four distinct presentations of the disease at diagnosis. Significant proportions of patients present with advanced disease, these clusters go on to present the greatest burden demonstrating the need for better diagnostic tools and novel earlier intervention.

Study funded by Johnson and Johnson.

Disclosure of Interests:

Zahi Touma Consultant of: Consultant for Janssen, Ben Hoskin Consultant of: Consultant for Janssen, Christian Atkinson Consultant of: Consultant for Janssen, David Bell Consultant of: Janssen, Olivia Massey Consultant of: Janssen, Jennifer H. Lofland Employee of: Janssen, Pamela Berry Employee of: Janssen, Chetan Karyekar Shareholder of: Johnson & Johnson, Consultant of: Janssen, Employee of: Janssen Global Services, LLC. Previously, Novartis, Bristol-Myers Squibb, and Abbott Labs., Karen Costenbader Grant/research support from: Merck, Consultant of: Astra-Zeneca

AB1170 THE IMPACT OF HIGH DISEASE ACTIVITY AS MEASURED BY SLEDAI AND DRUG BURDEN-ON HEALTHCARE UTILIZATION, QUALITY OF LIFE AND WORK PRODUCTIVITY IN SYSTEMIC LUPUS ERYTHEMATOSUS PATIENTS

Background:

Although there is abundant literature on healthcare utilization in SLE patients, the impact of disease activity in SLE patients is not well understood.

Objectives:

To quantify the impact of disease activity, as measured by SLEDAI score and drug burden, in SLE patients on health care resource utilization (HCRU), health related quality of life (HRQoL) and work productivity (WP).

Methods:

Data were collected from a cross-sectional survey of 754 rheumatologists in US and EU5 from the Adelphi Real World 2010/2013/2015 Lupus Disease Specific Programmes (DSP). Physicians were asked to complete patient record forms (PRFs) for the next 5 prospectively consulting SLE patients; the same patients were asked to complete patient self-completion (PSC) forms describing how SLE affected them. PRFs collected data pertaining to the patient’s diagnosis, disease history, current clinical outcomes, treatment and management history. PSCs focused on similar data collection and included patient reported outcome measures (PROs). Propensity score matching was used to assess differences in HCRU and PRO scores between SLE patients who had a low disease activity and those who had a high disease activity. Low disease activity was defined as a SLEDAI score of ≤4, a steroid dose of <7.5mg/day, and not on immunosuppressant or biologic. High disease activity was a SLEDAI score of >4, or on an immunosuppressant, biologic, or steroid dose of >7.5mg/day. Patients were matched on age, sex, and ethnicity.

Results:

Data was extracted from 1278 PRFs, and 591 PSCs. Using the estimated propensity score each low disease activity patient (n=44) was matched with a high disease activity patient (n=1187). Using 1:1 matching, with replacement and allowing for ties, matching resulted in 414 high disease activity patients being used as matches for 44 low disease activity patients. Demographic data are reported in Table 1. Patients with a low disease activity were significantly less likely to be currently flaring, lower number of flares in last 12 months, less likely to have been hospitalized in the last 12 months, had fewer consultations in the last 12 months, reported better HrQoL (EQ5D), more favourable levels of fatigue (FACIT), and lower work impairment (WPAI). (Table 2).

Table 1.

Demographic data

VariableLow disease activityHigh disease activityMean age (years)38.140.0% Female90.788.2% White/Caucasian76.767.7Mean years diagnosed5.55.0Table 1.

Propensity score matching results

Outcome variableLow activity meanHigh activity meanCoefficient95% CIp-valueFlared in the last 12 months11.6337.97-0.26[-0.38 – -0.14]<0.001Number of flares in last 12 months0.210.70-0.49[-0.72 - -0.26]<0.001Hospitalised in last 12 months4.6514.98-0.10[-0.17 – -0.04]0.001Number of consults in last 12 months2.843.52-0.68[-1.19 – -0.17]0.009EQ-5D-3L0.780.880.10[0.03 – 0.17]0.004FACIT Fatigue34.6839.865.19[0.80 – 9.57]0.02WPAI overall percentage work impairment14.4245.35-30.93[-45.32 – -16.54]<0.001

Conclusion:

Systemic lupus erythematosus patients with lower levels of disease activity are less burdensome to the healthcare system and experience a significantly better HRQoL and lower levels of productivity impairment. There is a need to establish a universal definition of low disease activity as a treatment goal to benefit patient quality of life and reduce HCRU.

Study funded by Johnson and Johnson.

Disclosure of Interests:

Zahi Touma Consultant of: Consultant for Janssen, Ben Hoskin Consultant of: Consultant for Janssen, Christian Atkinson Consultant of: Consultant for Janssen, David Bell Consultant of: Janssen, James Pike Consultant of: Janssen, Jennifer H. Lofland Employee of: Janssen, Pamela Berry Employee of: Janssen, Chetan Karyekar Shareholder of: Johnson & Johnson, Consultant of: Janssen, Employee of: Janssen Global Services, LLC. Previously, Novartis, Bristol-Myers Squibb, and Abbott Labs., Karen Costenbader Grant/research support from: Merck, Consultant of: Astra-Zeneca

How to build and share an experiential knowledge in public health?

Key messages

This work opens the way for an original reflection in public health to build a shareable experiential knowledge, and to valorize and strengthen field actors’ practical expertise. This work has pedagogical, political, scientific and informational impacts. It contributes to knowledge transfer and provides self-training, a practical vision of policies, and questions for research.

In Vivo Modeling of Chemoresistant Neuroblastoma Provides New Insights into Chemorefractory Disease and Metastasis

Neuroblastoma is a pediatric cancer that is frequently metastatic and resistant to conventional treatment. In part, a lack of natively metastatic, chemoresistant in vivo models has limited our insight into the development of aggressive disease. The Th-MYCN genetically engineered mouse model develops rapidly progressive chemosensitive neuroblastoma and lacks clinically relevant metastases. To study tumor progression in a context more reflective of clinical therapy, we delivered multicycle treatment with cyclophosphamide to Th-MYCN mice, individualizing therapy using MRI, to generate the Th-MYCN CPM32 model. These mice developed chemoresistance and spontaneous bone marrow metastases. Tumors exhibited an altered immune microenvironment with increased stroma and tumor-associated fibroblasts. Analysis of copy number aberrations revealed genomic changes characteristic of human MYCN-amplified neuroblastoma, specifically copy number gains at mouse chromosome 11, syntenic with gains on human chromosome 17q. RNA sequencing revealed enriched expression of genes associated with 17q gain and upregulation of genes associated with high-risk neuroblastoma, such as the cell-cycle regulator cyclin B1-interacting protein 1 (Ccnb1ip1) and thymidine kinase (TK1). The antiapoptotic, prometastatic JAK-STAT3 pathway was activated in chemoresistant tumors, and treatment with the JAK1/JAK2 inhibitor CYT387 reduced progression of chemoresistant tumors and increased survival. Our results highlight that under treatment conditions that mimic chemotherapy in human patients, Th-MYCN mice develop genomic, microenvironmental, and clinical features reminiscent of human chemorefractory disease. The Th-MYCN CPM32 model therefore is a useful tool to dissect in detail mechanisms that drive metastasis and chemoresistance, and highlights dysregulation of signaling pathways such as JAK-STAT3 that could be targeted to improve treatment of aggressive disease. SIGNIFICANCE: An in vivo mouse model of high-risk treatment-resistant neuroblastoma exhibits changes in the tumor microenvironment, widespread metastases, and sensitivity to JAK1/2 inhibition.

Impact of dose and duration of therapy on dexamethasone pharmacokinetics in childhood acute lymphoblastic leukaemia-a report from the UKALL 2011 trial

INTRODUCTION

The use of dexamethasone in acute lymphoblastic leukaemia therapy contributes to short- and long-term toxicities. The UKALL 2011 randomised trial investigated whether a more intense dexamethasone dose (10 mg/m2/d x 14d, short vs 6 mg/m2/d x 28d, standard) would lead to a more rapid cytoreduction and reduced adverse effects associated with longer durations of steroids in induction. The impact of dose and duration on dexamethasone pharmacokinetics was investigated.

METHODS

Blood samples were obtained on one of the first three and last three days of induction dexamethasone dosing at time points up to 8 h after oral administration. Plasma dexamethasone levels were quantified in 1084 plasma samples obtained from 174 children and a population pharmacokinetic model developed.

RESULTS

Drug exposure varied significantly between patients, with a >12-fold variation in AUC0-12h values and a marked overlap in dexamethasone exposures between dose levels. Intuitively, AUC0-12h was significantly higher with short dosing (10 mg/m2/d), but cumulative exposure was significantly higher with standard dosing over 28 days, after a higher cumulative dose. Concomitant rasburicase administration was associated with a 60% higher dexamethasone clearance. Day 8 bone marrow response was comparable between dosing arms, but those with <5% blast count exhibited a greater mean dexamethasone exposure than those with >5%. No statistical differences were observed between arms in terms of steroid-related toxicity or minimal residual disease at the end of induction.

CONCLUSION

The potential significance of dexamethasone AUC0-12h on early response and higher cumulative exposure on the standard arm suggest that duration of therapy and exposure may be more important factors than absolute dose from a clinical pharmacology perspective.

The induction of core pluripotency master regulators in cancers defines poor clinical outcomes and treatment resistance

Stem cell characteristics have been associated with treatment resistance and poor prognosis across many cancer types. The ability to induce and regulate the pathways that sustain these characteristic hallmarks of lethal cancers in a novel in vitro model would greatly enhance our understanding of cancer progression and treatment resistance. In this work, we present such a model, based simply on applying standard pluripotency/embryonic stem cell media alone. Core pluripotency stem cell master regulators (OCT4, SOX2 and NANOG) along with epithelial–mesenchymal transition (EMT) markers (Snail, Slug, vimentin and N-cadherin) were induced in human prostate, breast, lung, bladder, colorectal, and renal cancer cells. RNA sequencing revealed pathways activated by pluripotency inducing culture that were shared across all cancers examined. These pathways highlight a potential core mechanism of treatment resistance. With a focus on prostate cancer, the culture-based induction of core pluripotent stem cell regulators was shown to promote survival in castrate conditions—mimicking first line treatment resistance with hormonal therapies. This acquired phenotype was shown to be mediated through the upregulation of iodothyronine deiodinase DIO2, a critical modulator of the thyroid hormone signalling pathway. Subsequent inhibition of DIO2 was shown to supress expression of prostate specific antigen, the cardinal clinical biomarker of prostate cancer progression and highlighted a novel target for clinical translation in this otherwise fatal disease. This study identifies a new and widely accessible simple preclinical model to recreate and explore underpinning pathways of lethal disease and treatment resistance.

Preclinical evaluation of the first intravenous small molecule MDM2 antagonist alone and in combination with temozolomide in neuroblastoma

High‐risk neuroblastoma, a predominantly TP53 wild‐type (wt) tumour, is incurable in >50% patients supporting the use of MDM2 antagonists as novel therapeutics. Idasanutlin (RG7388) shows in vitro synergy with chemotherapies used to treat neuroblastoma. This is the first study to evaluate the in vivo efficacy of the intravenous idasanutlin prodrug, RO6839921 (RG7775), both alone and in combination with temozolomide in TP53 wt orthotopic neuroblastoma models. Detection of active idasanutlin using liquid chromatography‐mass spectrometry and p53 pathway activation by ELISA assays and Western analysis showed peak plasma levels 1 h post‐treatment with maximal p53 pathway activation 3–6 h post‐treatment. RO6839921 and temozolomide, alone or in combination in mice implanted with TP53 wt SHSY5Y‐Luc and NB1691‐Luc cells showed that combined RO6839921 and temozolomide led to greater tumour growth inhibition and increase in survival compared to vehicle control. Overall, RO6839921 had a favourable pharmacokinetic profile consistent with intermittent dosing and was well tolerated alone and in combination. These preclinical studies support the further development of idasanutlin in combination with temozolomide in neuroblastoma in early phase clinical trials.

What's new?

Long‐term survival of high‐risk neuroblastoma patients currently averages than 50%. New therapies that both improve survival and reduce treatment toxicity are urgently needed. MDM2 antagonists are a novel class of anti‐cancer agents that stabilize the p53 pathway and lead to tumour suppression. In this preclinical study, the authors tested a prodrug of the MDM2 inhibitor idasanutlin in mice. They found that this compound inhibited tumour growth and increased survival, especially in combination with temozolomide. These results support the further development of idasanutlin plus temozolomide in clinical trials for neuroblastoma.

The Oncogenic Transcription Factor RUNX1/ETO Corrupts Cell Cycle Regulation to Drive Leukemic Transformation

Oncogenic transcription factors such as the leukemic fusion protein RUNX1/ETO, which drives t(8;21) acute myeloid leukemia (AML), constitute cancer-specific but highly challenging therapeutic targets. We used epigenomic profiling data for an RNAi screen to interrogate the transcriptional network maintaining t(8;21) AML. This strategy identified Cyclin D2 (CCND2) as a crucial transmitter of RUNX1/ETO-driven leukemic propagation. RUNX1/ETO cooperates with AP-1 to drive CCND2 expression. Knockdown or pharmacological inhibition of CCND2 by an approved drug significantly impairs leukemic expansion of patient-derived AML cells and engraftment in immunodeficient murine hosts. Our data demonstrate that RUNX1/ETO maintains leukemia by promoting cell cycle progression and identifies G1 CCND-CDK complexes as promising therapeutic targets for treatment of RUNX1/ETO-driven AML.

Testing ATRA and MEK inhibitor PD0325901 effectiveness in a nude mouse model for human MPNST xenografts

Objective

Malignant peripheral nerve sheath tumors (MPNST) are aggressive sarcomas characterized by high recurrence rates and early metastases. These tumors arise more frequently within neurofibromatosis type 1 (NF1) and present with resistance during standard chemotherapy leading to increased mortality and morbidity in those patients. In vitro all-trans retinoic acid (ATRA) and MEK inhibitors (MEKi) were shown to inhibit tumor proliferation, especially when applied in combination. Therefore, we established a nude mouse model to investigate if treatment of xenografts derived from NF1 associated S462 and T265 MPNST cells respond to ATRA and the MEKi PD0325901.

Results

We demonstrated that human NF1 associated MPNST derived from S462 but not T265 cells form solid subcutaneous tumors in Foxn1 nude mice but not in Balb/c, SHO or Shorn mice. We verified a characteristic staining pattern of human MPNST xenografts by immunohistochemistry. Therapeutic effects of ATRA and/or MEKi PD0325901 on growth of S462 MPNST xenografts in Foxn1 nude mice were not demonstrated in vitro, as we did not observe significant suppression of MPNST growth compared with placebo treatment.

Electronic supplementary material

The online version of this article (10.1186/s13104-018-3630-0) contains supplementary material, which is available to authorized users.

Three Faces of Mercaptopurine Cytotoxicity In Vitro: Methylation, Nucleotide Homeostasis, and Deoxythioguanosine in DNA

Mercaptopurine (MP) is a cytotoxic thiopurine important for the treatment of cancer and autoimmune diseases. MP and other thiopurine drugs undergo extensive intracellular metabolism, but the mechanisms of action are poorly characterized. In particular, it is unknown how different metabolites contribute to cytotoxicity and incorporation of thiopurine bases into DNA. The aim of this study was to ask whether cytotoxicity results from the incorporation of thioguanosine nucleotides into DNA, an alternative thiopurine metabolite, or a combination of factors. Therefore, we measured the cytotoxicity, metabolism, and incorporation of thioguanosine into DNA in response to MP or MP metabolites. Thiopurine metabolites varied in cytotoxicity, with methyl-thioinosine-mono-phosphate and thioguanosine-tri-phosphate the most toxic, and the methyl-thioguanosine nucleotides the least. We show, using liquid chromatography-tandem mass spectrometry, how different metabolites may perturb biochemical pathways, particularly disrupting guanosine nucleotide homeostasis, that may contribute to the mechanism of action of thiopurines. Although there was no correlation between metabolite cytotoxicity and the levels of 6-methylthioinosine-mono-phosphate or thioguanosine incorporation into DNA as individual factors, a combined analysis suggested that these factors together had a major influence on cytotoxicity. This study emphasizes the importance of enzymes of nucleotide homeostasis, methylation, and demethylation in thiopurine effects. These results will facilitate the development of dynamic biochemical models of thiopurine biochemistry that will improve our understanding of mechanisms of action in relevant target tissues.

Patient experience in systemic lupus erythematosus: development of novel patient-reported symptom and patient-reported impact measures

BACKGROUND

Comprehensive assessment of systemic lupus erythematosus (SLE) and its treatment requires patient-reported outcome (PRO) measures to capture impacts and fluctuating symptoms. The objective of this study was to develop PROs, in accordance with the Food and Drug Administration (FDA) PRO Guidance, to assess fluctuations in SLE symptoms and its impact.

METHODS

Following independent review board approval, six US rheumatology practices recruited patients with SLE to participate in concept elicitation (CE) interviews, in order to identify important SLE symptoms and their impacts. The SLE Symptom Severity Diary (SSD) and SLE Impact Questionnaire (SIQ) were drafted based on CE interview results and clinician input. The PROs were revised based on patient feedback from cognitive debriefing (CD) interviews, clinician feedback, and a translatability assessment.

RESULTS

Forty-one patients completed CE interviews. Commonly-reported symptoms included fatigue (98%), joint pain (93%), and rash (88%). The most frequently reported impact was difficulty with chores/housework (61%). Eighteen patients completed CD interviews. The PROs were considered comprehensive, clear, and relevant.The SSD contains 17 items assessing energy/vitality, joint and muscle pain/stiffness/swelling, flu-like symptoms, cognition, numbness/tingling, skin symptoms and hair loss using an 11-point numeric response scale and a 24-h recall period (with the exception of hair loss). It also evaluates steroid status and dose. The SIQ contains 50 items, uses a 5-point Likert scale and a 7-day recall period, to assess disease impacts including patients' ability to make plans, work, and physical/social/emotional functioning.

CONCLUSION

The SSD and SIQ are comprehensive SLE-specific PROs developed in accordance with the FDA PRO Guidance. Following assessment of their measurement properties, they may be useful in clinical studies and clinical practice to measure fluctuations in, and the impact of, symptoms in patients with SLE.