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Common factors and unique pathways for linkages between HIV/STI prevention and syndemic behaviours in high-risk youth: protocol for a secondary analysis of harmonised data from six clinical trials

Por: Feldstein Ewing · S. W. · Dash · G. F. · Yang · M. · Hudson · K. A. · Chung · T.
Introduction

HIV/sexually transmitted infection (STI) prevention interventions are only modestly successful among youth, particularly for young people of colour and sexual and gender minority (SGM) youth. Even among disparate intervention modalities delivered with high fidelity, differences between intervention types have been minimal. One consistent theme has emerged: the role of the youth:provider relationship in predicting intervention response. In line with calls for examination of relational factors, the next essential step is a harmonised analysis to evaluate connections between the youth:provider relationship and co-occurrence of alcohol and cannabis use, in youth HIV/STI prevention intervention response.

Methods and analysis

Our team has completed six sizeable HIV/STI behavioural prevention studies, generating n=1136 independent youth (baseline Mage=17, range=13–24; 43% female; 21% SGM; 54% Hispanic; 9% African American; 7% Native American/Alaska Native) who received prevention programming and were followed at 1-, 3-, 6-, and/or 12 months. We will harmonise these studies and build a longitudinal mixed-effects machine learning model, with youth:provider relationship as a predictor of intervention response. Participant factors, provider factors and their interaction will be included in the model. Given high rates of alcohol and cannabis comorbidity, we will also examine syndemic outcomes (co-occurring HIV/STI risk behaviours, alcohol use and cannabis use). These data are crucial to informing next step HIV/STI and syndemic intervention programming with this age group.

Ethics and dissemination

This secondary analysis study is exempt from human subjects regulations under category 4(iii) as determined by the Institutional Review Board at UConn Health. Results will be disseminated via presentations at annual scientific conferences, submissions to peer-reviewed journals, to mental health and substance use providers, as well as community programmes for youth at high risk for HIV/STI and substance use.

Cognitive and physical exercise to improve outcomes after surgery (COPE-iOS) study: protocol for a randomised, controlled trial in the USA examining the efficacy of a combined cognitive and physical exercise programme performed before and after major surg

Por: Rengel · K. F. · Archer · K. R. · Jackson · J. C. · Raman · R. · Orun · O. M. · Ellison · T. · Vanston · S. W. · Ervin · H. · Lauck · A. · Provin · M. · Pandharipande · P. P. · Hughes · C. G.
Introduction

Surgery and its resulting hospitalisation are associated with subsequent cognitive and functional decline. Interventions to reduce this decline have exhibited limited success. Prehabilitation is the process of enhancing capacity and reserve before an acute stressor to improve tolerance of the acute physiologic insult. Older adults requiring major surgery are an ideal population for prehabilitation. Prehabilitation exercise studies have mostly focused on physical training to improve physical outcomes after specific surgery types, and data on cognitive outcomes and in broader surgical populations are needed. Computerised cognitive training (CCT) has been shown to enhance memory, processing speed, attention and multitasking. Combining CCT with a physical exercise may be most effective in reducing cognitive and functional decline in older patients undergoing major surgery, but has yet to be evaluated.

Methods and analysis

The COgnitive and Physical Exercise to improve Outcomes after Surgery (COPE-iOS) study is a randomised, controlled, participant and assessor blinded clinical trial testing the hypothesis that a pragmatic programme combining CCT and physical exercise throughout the perioperative (ie, preoperative and postoperative) period will improve long-term cognitive and disability outcomes in older surgical patients at high risk for decline. The trial aims to randomise 250 patients who undergo major surgery for a treatment period of approximately 1 month prior to surgery and 3 months after surgery, with a follow-up period of 12 months after surgery. The primary outcome is global cognition at 3 months after surgery. Key secondary outcomes include global cognition at 12 months after surgery and disability in activities of daily living and depression at 3 and 12 months after surgery.

Ethics and dissemination

Trial protocol has been approved by Vanderbilt Human Research Protections Programme (#202496) and an independent Data Safety Monitoring Board. Results will be presented at scientific conferences and submitted for publication.

Trial registration number

ClinicalTrials.gov Registry NCT04889417.

Feasibility of the MAINTAIN intervention to support independence after a fall for people with dementia: a pilot cluster randomised controlled trial in participants own homes

Por: Greene · L. · Connors · J. · Hulme · C. · Ukoumunne · O. C. · Barber · R. · Bingham · A. · Conroy · S. · Fox · C. · Duff · C. · Goodwin · V. · Gordon · A. L. · Hall · A. J. · Harwood · R. H. · Jackson · T. · Litherland · R. · Morgan-Trimmer · S. · Parry · S. W. · Sharma · A. · Whale · B. · A
Objectives

To evaluate the feasibility of conducting a full-scale randomised controlled trial to assess the clinical and cost-effectiveness of the MAINTAIN intervention, designed to support recovery and independence following a fall among people living with dementia.

Design

Pilot cluster randomised controlled trial (c-RCT).

Setting

Community-based healthcare services across six UK sites representing primary and secondary care settings.

Participants

31 participant-carer dyads were recruited. Eligibility criteria included a diagnosis of dementia and a recent fall. Exclusion criteria included severe comorbidity precluding participation. The consent rate was 84%, and retention at follow-up was 81%.

Interventions

The MAINTAIN intervention comprised tailored, home-based therapy sessions delivered by trained professionals, focusing on functional recovery, confidence and re-engagement in daily activities, compared with usual care. The intervention was delivered over 12 weeks with booster sessions up to week 24, with the full trial period lasting 28 weeks.

Primary and secondary outcome measures

Feasibility outcomes included recruitment and retention rates, intervention adherence and data completeness for outcome and economic measures. Exploratory outcomes assessed functional performance and quality of life. Feasibility outcomes were assessed at baseline, 12 weeks and 28 weeks.

Results

Recruitment occurred over an 8-month period (September 2023–April 2024) across six UK sites. Most intervention participants (89%) attended at least 60% of planned sessions. Completion rates for outcome and economic data were high, indicating strong acceptability and feasibility of both the intervention and trial procedures.

Conclusions

The pilot c-RCT demonstrated that recruitment, retention and intervention delivery were feasible and well accepted. Findings support progression to a definitive trial to evaluate the effectiveness and cost-effectiveness of the MAINTAIN intervention.

Trial registration number

ISRCTN16413728 (International Standard Randomised Controlled Trial Number registry).

Hydrocortisone replacement therapy in patients with glucocorticoid withdrawal syndrome after cessation of glucocorticoid treatment: REPLACE, a multicentre, randomised, double-blinded, placebo-controlled, 16-week study protocol

Por: Dreyer · A. F. · Hansen · S. B. · Borresen · S. W. · Al-Jorani · H. · Bislev · L. S. · Boesen · V. B. · Christensen · L. L. · Glintborg · D. · Jensen · R. C. · Jorgensen · N. T. · Klose · M. C. · Lund · M. L. · Frederiksen · J. S. S. · Tei · R. · Feldt-Rasmussen · U. · Jorgensen · J.
Introduction

Glucocorticoid therapy is prescribed for a variety of inflammatory conditions and is associated with severe adverse effects. A glucocorticoid withdrawal syndrome (GWS) may occur after prolonged glucocorticoid treatment—with or without biochemical glucocorticoid-induced adrenal insufficiency (GIAI). Previously, GWS was not considered an entity, probably due to the overlap between symptoms of GWS and GIAI. The Addison’s disease-specific quality of life questionnaire (AddiQoL-30) is a validated tool for quantifying symptoms of adrenal insufficiency resembling GWS. In the present study, we test the hypothesis that patients with a low AddiQoL-30 score and/or low cortisol response to a short Synacthen test (SST), after cessation of prednisolone treatment, may benefit from low-dose hydrocortisone therapy without increasing the risk of metabolic and cardiovascular disease during prolonged cortisol exposure.

Methods and analysis

REPLACE is a multi-centre, double-blinded, placebo-controlled randomised controlled trial in patients with polymyalgia rheumatica or giant cell arteritis after cessation of prednisolone treatment. Criteria for randomisation are an AddiQoL-30 score ≤85 and/or plasma cortisol response to SST, 30-min p-cortisol >100 and 85; and (2) patients with a SST-stimulated cortisol ≤100 nmol/L.

Ethics and dissemination

The study is conducted in accordance with the Declaration of Helsinki, registered at the Clinical Trials Information System (CTIS: 2024-513822-53-00) and Clinicaltrials.gov (NCT05193396), and publications will be in accordance with the recommendations of the International Committee of Medical Journal Editors. The trial is monitored by local independent Good Clinical Practice units and overseen by the Danish Data Protection Agency (journal no. 21/27119), the Regional Committees on Health Research Ethics for Southern Denmark (project ID: S-20210076), the Danish Patient Safety Authority and the Danish Medicines Agency.

Trial registration number

NCT05193396.

HIV testing and prevalence in fishing communities in rural Uganda: a cross-sectional study of 3197 individuals within SchistoTrack

Por: Bui · H. L. · Wilburn · L. · Nsimbe · S. W. · Nabatte · B. · Oromcan · G. W. · Mujuni · R. · Nabonge · J. · Kabatereine · N. B. · Smith · A. · Chami · G.
Objectives

To compare HIV testing coverage, prevalence and care cascade engagement between fisherfolk and the general population, and to assess the relevance of individual and community-level definitions of fisherfolk in understanding variation in HIV status and testing.

Design

Primary data collection and cross-sectional analysis in 1 year of the SchistoTrack community-based cohort.

Setting

52 shoreline villages in Pakwach, Buliisa and Mayuge districts in rural Uganda.

Participants

A total of 3197 individuals aged 5–92 years were tested for HIV in 2024. A subset of 124 HIV-positive participants had viral load measured in 2025. Statistical analyses focused on 1931 adults aged 15 years and older.

Primary and secondary outcome measures

The primary outcomes were lifetime HIV testing, testing in the past 12 months and current HIV status. Secondary measures included self-reported care cascade outcomes and viral load suppression.

Results

Overall, 6.94% (134/1931) of adult participants aged 15 years and older were with HIV (people with HIV (PWH)), of whom 22.39% (30/134) were newly diagnosed. 6% (25/415) of adults reporting fishing activities were HIV-positive. Of those, 80% (20/25) were status-aware, 76% (19/25) were on antiretroviral therapy, and 100% (8/8) of those who knew their viral load reported viral suppression. No significant differences in care cascade engagement were found between PWH reporting fishing activities and the general population. Measured viral suppression was 70.59% (72/102) among PWH with no significant differences by fishing activities. Fishing activities were significantly associated with higher odds of ever testing for HIV (OR 1.76 (95% CI 1.22 to 2.54)), but not with testing in the past 12 months or HIV status. No consistent district-level differences were observed.

Conclusions

Individuals reporting fishing activities had higher lifetime testing and comparable HIV prevalence and care cascade engagement to the general population. Gaps remain in recent testing, status awareness and viral suppression for fisherfolk.

Using real-world evidence to evaluate the long-term health and economic impact of the digital tool Grohealth W8Buddy supporting access to specialist weight management services: a protocol for a cohort observational study

Por: Deo · P. S. · Grove · A. · Zhang · M. · Abrams · K. R. · Auguste · P. · Barber · T. M. · Gazeley · T. · Green · R. · Griffiths · F. · Hazlehurst · J. · Hee · S. W. · Kaura · A. · Mallipedhi · A. · OToole · S. · Panesar · A. · Parsons · N. · Scott · E. · Summers · C. · Thind · M. · Thorpe · M.
Introduction

Obesity affects over a quarter of the UK population and can lead to serious health issues. NHS Specialist Weight Management Services (WMS) offer treatments including lifestyle advice, psychological support and medications, but access and availability vary by region. Although around 4 million people could be eligible for NHS Specialist WMS annually, capacity is limited to 35 000, severely limiting overall access for those who need it. While digital technology has started to be used in WMS, more evidence is needed to confirm its long-term effectiveness, acceptability and cost-effectiveness. This study explores the use of Gro Health W8Buddy, a digital platform and app providing remote Specialist WMS. It aims to determine the long-term health benefits of remote WMS pathway Gro Health W8Buddy compared with standard NHS WMS delivered in hospitals, and to improve patients access to services.

Methods and analysis

The study is a real-world evaluation with observational data collection. We will recruit 450 study participants from four NHS specialist WMS who will choose either standard NHS WMS or the digital pathway Gro Health W8Buddy. Participants are being given the option to choose their pathway to generate real-world evidence. We will measure and analyse health outcomes including weight loss, time taken to be treated and cost-effectiveness, at 18 months and follow up at 24 months for later analysis (outside of this core funding). We will gather experiential data from patients and healthcare professionals through surveys, observation and interviews.

Ethics and dissemination

Ethical approval has been obtained from NHS Health Research Authority (HRA) and Health and Care Research Wales (HCRW) (Supplementary Figure 3) (REC reference: 25/EM/0147). Our findings will be disseminated through academic publications, conference presentations and stakeholder engagement.

Trial registration

ISRCTN89168871; Pre-results.

Association between weather, air quality and asthma-related emergency department visits: a retrospective time-series study in Singapore

Por: Toh · M. R. · Wen · X. · Ng · G. X. Z. · Fun · A. Q. R. · Youxin · P. · Fong · L. · Wu · J. T. · Ong · M. · Matchar · D. B. · Tan · N. C. · Loo · C. M. · Sheikh · A. · Koh · M. S. · Lam · S. W.
Objectives

To evaluate the association between asthma-related emergency department (ED) visits and weather, air quality, monsoons, haze and cultural festivals in Singapore.

Design

Retrospective cohort study.

Setting

A public healthcare cluster that covers 20% of the nation’s adult asthma population.

Participants

2617 adult patients accounting for 5337 asthma ED visits between 2016 and 2024.

Primary and secondary outcome measures

Temperature, rainfall, wet bulb temperature (WBT), wind speed and Pollution Standards Index (PSI) were correlated with asthma ED counts at 0–7 day lags. Associations between ED visits and monsoons, transboundary haze and cultural festivals were evaluated using one-way analysis of variance. Weekly seasonal ARIMA models with exogenous regressors were fitted, incorporating PSI as a covariate and adjusting for demographic, clinical and socioeconomic factors.

Results

Asthma ED visits were positively correlated with PSI (lag 0: r=0.142; 95% CI 0.107 to 0.178) and inversely correlated with rainfall (lag 3: r=–0.062; 95% CI –0.099 to –0.026) and WBT (lag 1: r=–0.067; 95% CI –0.104 to –0.031). Wind speed (lag 2: r=–0.049; 95% CI –0.086 to –0.013) and ambient temperature (lag 6: r=–0.045; 95% CI –0.081 to –0.008) showed weaker inverse associations. Mean PSI was higher during haze (82.67 vs 51.46, p

Conclusions

PSI–ED association peaked on the same day of exposure but was no longer significant after adjusting for demographic and clinical factors. Pollution-linked festivals, transboundary haze and the Northeast monsoon were associated with increased asthma ED visits

Assessing the feasibility of a platform trial for Gram negative bloodstream infections: results from the vanguard phase of BALANCE+

Por: Daneman · N. · Johnstone · J. · Lee · T. C. · MacFadden · D. R. · McDonald · E. G. · Morpeth · S. C. · Ong · S. W. X. · Paterson · D. L. · Pinto · R. L. · Rishu · A. · Rogers · B. A. · Yahav · D. · Coburn · B. · Daley · P. · Das · P. · Fiest · K. · Findlater · A. · Fralick · M. · George · M
Objectives

Gram negative bloodstream infections (GN BSI) are a leading cause of mortality worldwide, and antibiotic treatment approaches remain understudied. BALANCE+ is a perpetual Bayesian adaptive platform trial to test multiple treatment questions for hospitalised patients with GN BSI. The vanguard phase objective was to test the feasibility of the main trial.

Design

Adaptive platform trial with five initial domains of investigation, each with open label 1:1 randomisation.

Setting

Ten hospitals across four Canadian provinces.

Participants

Individuals admitted to hospital with blood cultures yielding Gram negative bacteria.

Interventions

The five initial domains of investigation included: antibiotic de-escalation versus no de-escalation; oral transition to beta-lactam versus non-beta-lactam treatment; routine versus no routine follow-up blood cultures (FUBCs); central vascular catheter replacement versus retention; and, ceftriaxone versus carbapenem treatment for low risk AmpC organisms.

Primary outcome measures

Domain-specific recruitment rates and protocol adherence.

Results

During the vanguard phase, 719 patients were screened, of whom 563 (78.3%) were eligible, with 179 (31.8%) enrolled into the platform. The platform recruitment rate was 1.37 patients/site-week. Recruitment varied by domain: routine versus no FUBC domain 1.23 patients/site-week; oral beta-lactam versus non-beta-lactam domain 0.48; de-escalation versus no de-escalation domain 0.28; low risk AmpC domain 0.02; catheter replacement versus retention domain 0.01. Domain specific protocol adherence rates were 145/158 (91.8%) for routine versus no routine FUBC, 53/60 (88.3%) for oral beta-lactam versus non-beta-lactam, 26/33 (78.8%) for de-escalation versus no de-escalation, 3/3 (100%) for low risk AmpC, and 0/1 (0%) for line replacement versus retention. There was complete ascertainment of all study outcomes in hospital 170/170 (100%) and near complete ascertainment at 90 days 162/170 (95.3%).

Conclusions

The vanguard phase demonstrated overall trial feasibility by recruitment rate and protocol adherence, with differences across interventions, leading to a transition to the main BALANCE+ platform trial with minimal protocol modifications.

Trial registration number

NCT05893147.

Development of explainable machine learning models to predict side effects in patients with rheumatoid arthritis taking methotrexate treatment: a nationwide multicentre cohort study

Por: Jang · J. · Kim · W. J. · Park · S. W. · Moon · K. W. W.
Objectives

Methotrexate (MTX) effectively controls rheumatoid arthritis (RA) but often leads to side effects (SE) such as gastrointestinal (GI) issues, liver toxicity and bone marrow suppression. To develop clinically interpretable machine learning (ML) models that accurately predict MTX-related SE in patients with RA taking MTX. The aim was to enhance predictive accuracy and to identify patient-specific risk factors using explainable artificial intelligence (XAI), thereby enabling transparent clinical interpretation. We specifically sought to address the unmet need for individualised risk stratification using real-world, multicentre observational data.

Design

Retrospective case-control study.

Setting

Across 23 rheumatology clinics in South Korea, based on data from a nationwide multicentre cohort.

Participants

A total of 5077 patients with RA were initially enrolled from the Korean Observational Study Network for Arthritis. After excluding those with missing clinical, demographic or prescription data and those not receiving MTX, 2375 patients remained eligible. Among these, 1654 and 1218 patients were included in the overall SE and GI SE analysis groups, respectively, after 1:1 propensity score matching. All patients were aged ≥18 years and met the 1987 American College of Rheumatology classification criteria.

Primary and secondary outcome measures

The primary outcome was the presence of SE in patients with RA taking MTX, categorised into overall SE and GI SE, based on standardised patient questionnaires and clinical assessments. The secondary outcome was the identification of key predictors using SHapley Additive exPlanations (SHAP) to enhance the interpretability of ML predictions.

Results

Among six ML classifiers, extreme gradient boosting demonstrated the highest performance in predicting overall SE (area under the curve (AUC) 0.781, F1 score 0.672, area under the precision-recall curve (AUPRC) 0.757) and GI SE (AUC 0.701, F1 score 0.690, AUPRC 0.670). SHAP analysis identified key predictive features including age, physician visual analogue scale score, alanine aminotransferase, Health Assessment Questionnaire score, celecoxib use and drug adherence. Logistic regression confirmed statistical significance for multiple variables (eg, OR 4.63; 95% CI 1.41 to 20.90 for non-adherence >30 days; OR 1.45; 95% CI 1.14 to 1.85 for celecoxib use). DeLong’s test indicated that boosting models significantly outperformed support vector machine (p

Conclusions

Interpretable ML models using real-world clinical data can accurately predict SE in patients with RA taking MTX. These models may facilitate early identification of high-risk individuals and inform personalised treatment strategies. Integration into clinical decision support systems could improve MTX safety monitoring. Further prospective validation in external cohorts is warranted.

Long-term recovery from post-traumatic neck pain: protocol for a prospective cohort study in the emergency department

Por: Lynaes · C. · Ravn · S. L. · Skou · S. T. · Mogensen · C. B. · Arvig · M. D. · Christensen · S. W. M. · Sterling · M. · Andersen · T. E.
Introduction

Post-traumatic neck pain is common, representing a substantial human and societal burden. About 15%–25% of individuals involved in an accident causing whiplash continue to experience moderate-to-severe symptoms and functional impairment 1 year post-trauma. Factors such as age, high pain intensity, hypersensitivity to pain and early post-traumatic hyperarousal are associated with persistent neck pain. However, multiple questions remain unanswered regarding how best to improve early care. As such, research on recovery patterns (including indicators for health economic burden) and their predictors is still needed, including biomarkers for pre-traumatic and peri-traumatic stress, and the value of early prediction tools.

Methods and analysis

This prospective cohort study will include 100 participants (18 years) suffering from post-traumatic neck pain sustained within 72 hours of an accident. At baseline (a combination of inclusion and 1 week assessment), eligible participants will undergo a thorough evaluation, including assessment of descriptive characteristics, self-reported variables (eg, pain, disability, sleep quality and post-traumatic stress), biomarkers (eg, heart rate variability (HRV) and hair cortisol) and clinical tests (eg, cervical range of motion). Follow-up will be conducted at 3, 6 and 12 months post-trauma. Further, register data (eg, data on labour market attachment) will be added for the period. Among other methods, a receiver operating characteristic (ROC) curve and multivariable regression analyses will be used to evaluate performance and associations of the prediction tools and their associations with measures of HRV.

The sample size calculation is based on previous studies, estimating that 15% of participants will develop moderate-to-severe ongoing symptoms. Using a conservative estimate, 64 participants are needed to achieve a statistical power of 90% with an expected area under the curve of 0.80. Accounting for a 25% loss to follow-up, 80 participants are required. For regression analysis, 100 participants will be included. The prediction tool will be validated using ROC analysis, sensitivity and specificity. Logistic regression models will be performed with and without biomarkers and pain sensitivity. Health economic costs will be compared across groups. Multivariable regression will examine the link between HRV and post-traumatic stress disorder, adjusting for confounders and a moderation analysis will assess hair cortisol as a potential moderator.

Ethics and dissemination

The study is approved by the Regional Committee on Health Research Ethics of Southern Denmark (S-20230037). Due to the acute nature of recruitment, the study design does not allow for a 24-hour reflection period; however, this approach has been approved by the Committee.

Study results will be published in peer-reviewed journals and disseminated through non-scientific outlets, including patient and professional publications, press releases and social media. If effective, workshops for clinicians will be organised. Results will be published regardless of outcome, with coauthorships following ICMJE guidelines.

Trial registration number

NCT06176209.

Acute myocardial infarction diagnosis and treatment following implementation of a multicomponent intervention in Tanzania: the MIMIC pilot trial

Por: Hertz · J. T. · Nworie · J. E. · Shayo · F. · Galson · S. W. · Coaxum · L. A. · Daniel · I. · Makambay · P. S. · Akrabi · A. M. · Manyangu · G. J. · Thielman · N. M. · Bloomfield · G. · Sakita · F. M.
Background

In Tanzania, acute myocardial infarction (AMI) is underdiagnosed, and uptake of evidence-based care is suboptimal. Using an implementation science approach, an intervention was developed to address local barriers to care: the Multicomponent Intervention for Improving Myocardial Infarction Care in Tanzania (MIMIC).

Methods

This sequential cohort design trial was conducted in a single northern Tanzanian emergency department (ED). During the preintervention phase (February–August 2023) and the postintervention phase (September 2023–August 2024), adults presenting with chest pain and/or dyspnoea were prospectively enrolled and their ED care was observed. AMI was defined by the Fourth Universal Definition criteria. Telephone follow-ups were conducted to ascertain 30-day mortality. Pearson’s ² was used to compare care before and after MIMIC implementation.

Results

A total of 275 participants were enrolled in the preintervention phase and 577 were enrolled in the postintervention phase. Following MIMIC implementation, significant increases were observed in ECG testing (89.4% of postintervention participants vs 55.3% preintervention, OR 6.82, 95% CI 4.79 to 9.79, p

Conclusions

The MIMIC intervention was associated with large increases in uptake of AMI testing, case identification and evidence-based treatment in a single Tanzanian ED. Multisite studies are needed to evaluate the effect of MIMIC on AMI care in diverse settings across Tanzania.

Trial registration number

NCT04563546.

How do primary care consultation dynamics affect the timeliness of cancer diagnosis in people with one or more long-term conditions? A qualitative study

Por: Valasaki · M. · Carter · M. · Winder · R. · Shephard · E. · Valderas · J. M. · Merriel · S. W. D. · Farmer · L. · Summers · B. · Dean · S. G. · Morgan-Trimmer · S.
Objectives

To explore how pre-existing conditions affect the diagnostic process for potential cancer in primary care patients.

Design

Qualitative interview study using thematic analysis underpinned by a critical realist approach.

Setting

Primary care practices recruited through four Clinical Research Networks and UK health charities across England.

Participants

Interviews were conducted with 75 patients with one or more pre-existing conditions (anxiety/depression, diabetes, obesity, chronic obstructive pulmonary disease, Parkinson’s disease or multiple long-term conditions (four or more)) and 28 primary care professionals (general practitioners and nurses).

Results

The study identified legitimacy as a central theme influencing patient trajectories in the health system while trying to receive a diagnosis for symptoms with which they presented to primary care. Patients engaged in self-triage to determine whether symptoms were ‘legitimate’ enough to seek care. Subsequent triaging steps (by receptionists, nurses and online systems) acted as gatekeepers, with decisions influenced by effectiveness of describing the symptom and subjective impressions. During consultations, clinicians relied on a mix of symptom narrative clarity, medical history and objective ‘metrics’ (eg, blood results, family history) to determine legitimacy for further investigations. Pre-existing conditions could either lower the threshold for referrals or obscure potential cancer symptoms. The stigma associated with mental health diagnoses often undermined perceived legitimacy and contributed to delays.

Conclusions

Legitimacy is continuously negotiated throughout the diagnostic pathway. It is shaped by social, moral and biomedical judgements. To promote early cancer diagnosis for patients with pre-existing conditions, clinicians must make legitimacy assessments explicit, reduce stigma especially around mental health and standardise triage processes.

Multiparametric MRI for local staging in patients with suspected muscle-invasive bladder cancer: study protocol for a multicentre, non-inferiority randomised controlled trial (the BladParadigm study)

Introduction

Muscle-invasive bladder cancer (MIBC) is an aggressive type of cancer. About 50% of patients will die from the disease within 5 years despite radical treatment. This implies that in many patients, the disease has already spread at the time of radical treatment, even though imaging shows no signs of metastasis. We hypothesise that the standard local staging method, transurethral resection of the bladder tumour (TURBT), is partly responsible for tumour cell spread. Furthermore, TURBT (and re-TURBT in many patients) contributes to a significant delay to definitive therapy. The aim of this randomised study is to determine whether multiparametric MRI (mpMRI) of the bladder, in combination with a single outpatient bladder tumour biopsy for histological confirmation, is a safer, faster, less costly and, therefore, more cost-effective diagnostic pathway than TURBT to detect or rule out MIBC.

Methods and analysis

BladParadigm is a two-arm multicentre randomised controlled trial (RCT) conducted in the Netherlands. Over a 3-year period, patients with clinically suspected MIBC without evidence of metastases will be recruited and randomised 1:1 to either TURBT or 3-Tesla mpMRI with same-day outpatient bladder biopsy. The Vesical Imaging Reporting and Data System (VI-RADS) will be used to standardise mpMRI reporting. Patients will undergo definitive treatment based on the results of the TURBT or mpMRI. The study is powered to demonstrate that the mpMRI-based strategy is at least non-inferior to standard TURBT in patients treated with radical cystectomy alone, assuming a relative hazard of 0.55. The required sample size is 360 patients (180 TURBT, 180 mpMRI). The primary outcome is 2-year progression-free survival. Progression will be assessed by imaging, according to the current standard of care. Secondary outcome measures are time to definitive treatment, quality of life (EuroQol 5D-5L), healthcare costs and cost-effectiveness.

Ethics and dissemination

This study has received ethical approval from the Medical Ethical Committee Oost-Nederland (NL83685.091.23). All participants will provide written informed consent prior to inclusion. Findings of this study will be disseminated through peer-reviewed, open-access publications, presentations at scientific conferences and stakeholder briefings.

Trial registration number

NCT05779631.

Oral-gut microbiome axis in a Korean cohort with inflammatory bowel disease and ankylosing spondylitis (INTEGRATE): a prospective and observational study protocol

Por: Kim · H. S. · Kim · B.-H. · Nam · B. · Oh · S. J. · Park · S.-K. · Lee · S. W. · Lee · J.-Y. · Jo · S. · Lee · Y.-A. · Lee · J.-Y. · Park · D. I. · Kim · T.-H. · Lee · C. K.
Introduction

The global burden of chronic immune-mediated inflammatory diseases (IMIDs) is increasing, and rising prevalence rates significantly affect socioeconomic factors and quality of life. Inflammatory bowel disease (IBD), including Crohn’s disease (CD) and ulcerative colitis (UC), along with ankylosing spondylitis (AS), are prominent chronic IMIDs that share overlapping pathophysiological mechanisms. Recent research has highlighted the importance of the gut microbiota in the pathogenesis of these diseases, suggesting that shared microbial dysbiosis may contribute to their development. Comprehensive research focusing on the gut and oral microbial characteristics and environmental factors is essential to elucidate the fundamental pathophysiology and develop personalised management strategies for IBD and AS. In-depth analyses and insights based on multiomics approaches are required to achieve these objectives.

Methods and analysis

This protocol describes a nationwide prospective observational study of CD, UC and AS in a Korean population. Over 5 years, we aim to recruit at least 900 patients with IBD and 200 first-degree relatives (FDRs), 500 patients with AS and 200 of their FDRs, and 2244 healthy controls. We will systematically collect clinical data and biological samples, including saliva, stool, blood and tissue biopsies, for integrative multiomics analyses focusing primarily on the microbiome. Highly advanced full-length 16S ribosomal RNA gene sequencing and shotgun metagenomics will be used to characterise the microbial composition of saliva and stool samples. Quantitative microbiome profiling will be used to address the pathological, physiological and ecological differences between microbial groups that may be masked by their relative abundance. Metabolomic analyses will be conducted on saliva, stool and plasma samples to assess functional metabolic profiles. Culturomics will be used to isolate, identify and characterise the diversity of microbial species, including rare or previously unrecognised species, to provide a comprehensive understanding of the microbiota associated with these diseases.

Ethics and dissemination

Ethical approval was obtained from the Ethics Committee of Kyung Hee University Hospital, Hanyang University Hospital, Kangbuk Samsung Hospital, Yeungnam University Hospital, Kyungpook National University Hospital, Chonnam National University Hospital, Wonkwang University Hospital, Catholic University Daejeon St. Mary’s Hospital, Soon Chun Hyang University Hospital Cheonan, Chung-Ang University Hospital, Inje University Haeundae Paik Hospital, Dankook University Hospital, Hanyang University Guri Hospital, Kyung Hee University Hospital at Gangdong, Chung-Ang University Gwangmyeong Hospital and Keimyung University Dongsan Hospital. Our research team will provide detailed information about the study, including an information sheet explaining its aims and procedures, prior to enrolment. Prospective participants will be informed that they have the right to withdraw from the study at any time, without penalty. Participants will be assured of the anonymity and confidentiality of any data they provide throughout the study, using participant numbers and the storage of sensitive data in locked cabinets. Participants will be enrolled in the study only after providing written informed consent to the research staff. The results of this study will be disseminated to healthcare and academic professionals through publications in peer-reviewed journals and presentations at international conferences.

Trial registration number

This prospective observational study is registered at ClinicalTrials.gov ((ID: NCT06124833, data first posted: 9 November 2023); (ID: NCT06076083, data first posted: 21 November 2023) and (ID: NCT06183697, data first posted: 27 December 2023)).

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