Colorectal cancer (CRC) is the fourth most common cancer in the UK and second leading cause of cancer-related deaths. The faecal immunochemical test (FIT) is a non-invasive home-based test used for both symptomatic assessment and population-based screening. However, approximately 30% of screening FIT kits and 10% of symptomatic FIT kits are never returned. Under-served populations, including ethnic minorities, socioeconomically deprived communities and those with mental health conditions, experience particularly low FIT return rates, contributing to health inequalities in CRC outcomes. This systematic review aims to synthesise evidence on the effectiveness and acceptability of interventions to improve FIT returns in both asymptomatic screening and symptomatic populations, with particular focus on under-served communities.

We will conduct a systematic review of qualitative and quantitative evidence. We will search Scopus, MedLine via Ovid, CINAHL via Ebsco and Cochrane Central Register of Controlled Trials from September 2010 onwards, supplemented by reference screening and trial registry searches. Eligible studies will include randomised controlled trials, quasi-experimental studies, observational studies, qualitative studies, mixed-methods studies and implementation studies examining FIT interventions in screening or symptomatic populations. Two reviewers will independently screen search results for eligible studies. Data extraction will capture study characteristics, population demographics, intervention components and outcomes including FIT return rates, acceptability, feasibility and implementation factors. Quantitative data will undergo systematic tabulation and meta-analysis where appropriate, with narrative synthesis for heterogeneous studies. Qualitative data will be analysed using framework-based thematic analysis, mapping findings to both the theoretical domains framework and theoretical framework of acceptability. A mixed-methods synthesis will integrate quantitative and qualitative findings to identify intervention characteristics, implementation strategies and contextual factors associated with improved outcomes across different population groups.

Ethics approval is not required as this systematic review will analyse published studies. Findings will be disseminated through peer-reviewed publication and conference presentations.

CRD420251111663.

Peripheral artery disease (PAD) affected approximately 800 000 Canadians aged 25 years or older in 2015 and it poses a substantial risk of lower extremity amputation (LEA). While clinical risk factors for amputation are well-established, the impact of social determinants of health (SDoH) on amputation risk remains unclear, particularly in a Canadian context.

This systematic review aims to: (1) synthesise evidence on the associations between multilevel SDoH domains and LEA (both major and/or minor) risk in Canadian PAD patients including intersectional effects of race and ethnicity with another SDoH domain, and (2) evaluate the statistical methodologies used in the researched literature to inform future study design and analysis approaches.

We will systematically search MEDLINE, Embase, EmCare, Global Health, Cumulative Index to Nursing and Allied Health Literature and Web of Science for studies examining SDoH and LEA in Canadian patients with PAD (including chronic limb-threatening ischaemia which is a severe form of PAD). Date limits for each database will be from inception through December 2025. SDoH will be categorised using a modified Healthy People 2030 SDoH framework under six domains: economic stability, education, food, neighbourhood and physical environment, healthcare system and community and social context. Two reviewers will independently screen titles, abstracts and full texts, with discrepancies resolved by a third reviewer. Data will be extracted on study characteristics, SDoH measures, outcomes and statistical methods. Risk of bias will be assessed using RoB 2 for randomised trials, ROBINS-I for non-randomised studies of interventions and ROBINS-E for studies investigating exposures. A narrative synthesis, and where data permit, a Bayesian hierarchical meta-analysis using both effect size and contingency table approaches will be conducted. Statistical heterogeneity will be explored through subgroup analyses and meta-regression, examining study design, SDoH measurement approaches and population characteristics.

As a systematic review and meta-analysis, ethics approval is not required. For institutional oversight, we provide the contact of Dr Sonia Anand (Associate Vice-President, Global Health, McMaster University; anands@mcmaster.ca). Results will be reported following PRISMA guidelines and disseminated through a peer-reviewed publication.

CRD420251115759.

Racialised immigrant communities in Western nations face disproportionate risks for sexually transmitted and blood-borne infections (STBBIs) due to systemic barriers, including racism, stigma and limited access to culturally appropriate care. While the need is well-established, a comprehensive synthesis of effective, culturally responsive sexual health interventions is lacking. This scoping review aims to map the available evidence on sexual health intervention needs and protective factors of racialised immigrants, and to identify and describe existing culturally appropriate programmes in Western nations.

The review will follow the JBI methodology for scoping reviews and be reported as per the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR) guidelines. A systematic search strategy, developed and peer-reviewed by a health sciences librarian, will be executed in MEDLINE, Embase, CINAHL and Scopus, alongside grey literature sources, with no date limit. Two independent reviewers will screen titles/abstracts and full texts against the inclusion criteria. Data will be extracted using a standardised tool, analysed via narrative synthesis and framed by a socio-ecological model to categorise interventions across individual, interpersonal, community and structural levels.

Ethical approval is not required for this review. Findings will be disseminated through a peer-reviewed publication, academic presentations and tailored summaries for community organisations and policy-makers to ensure practical application.

Open Science Framework (https://osf.io/9qah6).

Genome Canada has committed significant resources to ensure that racialised groups are included in its initiatives; however, specific equity considerations related to engaging these communities in human genomic research continue to require deeper attention and exploration. This scoping review aims to widen the frame of analysis concerning inclusive human genomics by undertaking a synthesis that includes perspectives from genomicists, decision and policymakers, legal experts in bioethics and leaders from racialised communities.

We conducted a comprehensive scoping review using the Arksey and O’Malley framework to examine the equitable participation of racialised communities in human genomic research.

Our goal was to identify the barriers preventing these populations from equally participating in human genomic research. The review focused on studies from five countries: Canada, the USA, the UK, Australia and New Zealand which have similar immigration patterns and have received racialised populations from from some of the same communities around the globe. These features makes studying these particular countries germane to studying the common challenges they face in human genomics research.

Our scoping review examined both academic and grey literature, including MEDLINE, EMBASE, PsycINFO (inception to 11 June 2025), CINAHL (to 12 June 2025) and Cochrane Central Register of Controlled Trials (CENTRAL) (to 19 June 2025), as well as Google Scholar and OAISter (October, 2023).

Data were analysed using Braun and Clarke’s thematic synthesis guidelines. These included familiarisation with the relevant texts in the selected articles, generating initial codes using an inductive approach, reviewing potential themes and finalising the themes based on the consensus of the research team.

The study identified key barriers and facilitators to participation in human genomic research among racialised communities. The first theme (exclusion) highlighted obstacles such as a lack of transportation, limited knowledge of genetics and distrust stemming from concerns of stigmatisation and health disparities. The second theme (diversity of positions) described varied perceptions influenced by cultural values and motivations, with preferences for transparency and autonomy in research participation. Finally, the third theme (equity in genetic research) outlined the limited use of community-based participatory models and biobanking, underscoring the need for more inclusive and equitable research practices to fully engage racialised communities.

Future research should prioritise strategies of authentic engagement with racialised communities to enhance both inclusivity and equity in genetic, human genomic, precision medicine and precision health research.

Parents of children with neurodevelopmental disorders often experience high levels of stress that impact their mental health, yet few interventions focus on their well-being. To address this gap, we developed a mental health intervention based on emotional intelligence (EI), designed for delivery in healthcare settings. We hypothesise that enhancing EI can reduce parenting stress and improve psychological well-being. This study aims to assess the effectiveness, cost-effectiveness and feasibility of this EI-based intervention in Bangladesh.

This hybrid type 1 effectiveness-implementation study will include a cluster randomised controlled trial, an implementation analysis and an economic evaluation. Eight child development centres will be randomly assigned in a 1:1 ratio to intervention and waitlist control groups. A total of 480 parents (mothers and fathers) will be recruited. The intervention consists of interactive sessions on EI skills, supported by personal diaries and a mobile app. Data will be collected at baseline and 12 weeks postintervention using validated tools to assess EI, parenting stress, psychological well-being and other mental health outcomes. Implementation will be evaluated using mixed methods to assess feasibility, acceptability and fidelity. Cost-effectiveness will be determined through a cost–utility analysis of direct and indirect costs.

Ethical approval was granted by the Institutional Review Board of Bangladesh Medical University (BSMMU/2022/10733). Written informed consent will be obtained at each stage of data collection and intervention. Findings will be disseminated through open-access publications, plain-language summaries, academic conferences, community workshops and policy briefs. Data will be shared in open-access platforms to inform mental health strategies in low-resource settings globally.

NCT06166550.

Self-harm and suicide are common among prison inmates, but less is known about these phenomena in those with psychosis.

The aim of this study was to examine self-harm behaviour in New South Wales (NSW) prisons in Australia among inmates diagnosed with psychosis. This study also examined self-harm-related alerts applied by Corrective Services to assist staff with the management of the security and well-being of inmates.

A retrospective case-control data-linkage study was conducted using administrative data collections in NSW, Australia.

The study included all individuals diagnosed with psychosis and incarcerated between 2001 and 2020 in NSW as cases and an age and sex matched control group with no such diagnosis with a record of incarceration in the same time period.

The primary outcome measure was self-harm among the cases and controls. The secondary outcome measure was the application of alerts by Corrective Services in relation to self-harm incidents.

Multivariate regression analysis was used to examine predictors of self-harm in prison. Prisoners with psychosis (n=14 900) were more likely to self-harm than controls (n=2713), with 15.0% versus 3.6% engaging in self-harm (highest odds of self-harm observed in those with schizophrenia and related psychoses, aOR=4.84, 95% CI: 3.93 to 5.98). Those of Aboriginal heritage had an increased risk of self-harm (aOR=1.58, 95% CI: 1.43 to 1.75). Factors associated with a lower risk of self-harm were male sex and older age (≥25 years) at the time of their first incarceration. 35.6% of those released from prison with a prior psychosis diagnosis had at least one alert applied during incarceration compared with 10.1% of prisoners without a diagnosis of psychosis. Overall, 35 individuals with psychosis and 1 individual from the control group died while in prison between 2001 and 2020. 17 prison suicides were recorded from the study population; all occurred in the psychosis group.

Given the heightened risk of self-harm in those with histories of psychosis, consideration should be given to sharing mental health information between agencies to improve the care and management of this group during incarceration. Prison alerts may be a useful tool to help staff manage inmates’ well-being if used appropriately.

Nipah virus (NiV) is a bat-transmitted paramyxovirus causing recurrent, high-mortality outbreaks in South and South-East Asia. As a WHO priority pathogen, efforts are underway to develop therapies like monoclonal antibodies and small-molecule antivirals, which require evaluation in clinical trials. However, trial design is challenging due to limited understanding of NiV’s clinical characteristics. Given the rarity of NiV infections, strategies targeting improved outcomes for the broader acute encephalitis syndrome (AES) patient population, including those with NiV, are essential for advancing therapeutic research. To address these gaps, we designed the Bangladesh AES cohort study to characterise the patient population, clinical features, treatment practices, common aetiologies and outcomes in patients presenting with AES, including NiV infection, as a clinical characterisation study to inform the design of clinical trials for NiV and AES more broadly.

This prospective cohort study will be conducted in Bangladesh, a NiV endemic country with annual outbreaks. In collaboration with the ongoing NiV surveillance programme in Bangladesh, we aim to enrol up to 2000 patients of all ages presenting with AES at three tertiary care hospitals within the Nipah belt. Patients who provide informed consent to participate will be monitored throughout their hospital stay until 90 days post enrolment. Data will be systematically collected through interviews and medical record reviews at several time points: on the day of enrolment, day 3, day 7, the day of critical care admission (if applicable), discharge day and 90 days post enrollment. Additionally, a portion of the cerebrospinal fluid collected under the concurrent NiV surveillance protocol will be tested for an array of viral and bacterial pathogens responsible for encephalitis at the International Centre for Diarrhoeal Disease Research Bangladesh (icddr,b) laboratory.

The study received ethical approval from the Oxford Tropical Research Ethics Committee, University of Oxford, UK (OxTREC Ref: 576–23) and the institutional review board of icddr,b, Bangladesh (icddr,b protocol number: 24016). By characterising the AES patient population, this study will generate essential evidence on key clinical parameters, which will be pivotal in optimising the design of clinical trials for potential interventions aimed at improving outcomes in patients with AES, including those with NiV disease. Findings will be shared with participating hospitals, patients and relevant government stakeholders. Results will also be disseminated through conference presentations and peer-reviewed publications.

Not applicable (this is an observational study).

Venous thromboembolism (VTE) is a complex disorder influenced by both acquired and inherited factors. Oral contraceptive use, an acquired factor, has been linked to an increased risk of...