To compare metabolic dysfunction-associated profiles between patients with diabetes who developed different obesity-related site-specific cancers and those who remained free of cancer during follow-up.

Retrospective cohort study.

Public general outpatient clinics in Hong Kong.

Patients with diabetes without a history of malignancy (n=391 921).

The outcomes of interest were diagnosis of site-specific cancers (colon and rectum, liver, pancreas, bladder, kidney and stomach) during follow-up. Cox proportional hazards regression was applied to assess the associations between metabolic dysfunction and other clinical factors with each site-specific cancer.

Each 0.1 increase in waist-to-hip ratio was associated with an 11%–35% elevated risk of colorectal, bladder and liver cancers. Each 1% increase in glycated haemoglobin was linked to a 4%–9% higher risk of liver and pancreatic cancers. While low-density lipoprotein cholesterol and triglycerides were inversely associated with the risk of liver and pancreatic cancers, high-density lipoprotein cholesterol was negatively associated with pancreatic, gastric and kidney cancers, but positively associated with liver cancer. Furthermore, liver cirrhosis was linked to a 56% increased risk of pancreatic cancer. No significant association between hypertension and cancer risk was found.

Metabolic dysfunction-associated profiles contribute to different obesity-related cancer outcomes differentially among patients with diabetes. This study may provide evidence to help identify cancer prevention targets during routine diabetes care.

Co-creation approaches, such as co-design and co-production, aspire to power-sharing and collaboration between service providers and service users, recognising the specific insights each group can provide to improve health and other public services. However, an intentional focus on equity-based approaches grounded in lived experience and epistemic justice is required considering entrenched structural inequities between service-users and service-providers in public and institutional spaces where co-creation happens.

This paper presents a Charter of tenets and principles to foster a new era of ‘Equity-based Co-Creation’ (EqCC).

The Charter is based on themes heard during an International Forum held in August 2022 in Ontario, Canada, where 48 lived experience experts and researchers were purposively invited to deliberate challenges and opportunities in advancing equity in the co-creation field.

The Charter’s seven tenets—honouring worldviews, acknowledging ongoing and historical harms, operationalising inclusivity, establishing safer and brave spaces, valuing lived experiences, ‘being with’ and fostering trust, and cultivating an EqCC heartset/mindset—aim to promote intentional inclusion of participants with intersecting social positions and differing historic oppressions. This means honouring and foregrounding lived experiences of service users and communities experiencing ongoing structural oppression and socio-political alienation—Black, Indigenous and people of colour; disabled, Mad and Deaf communities, women, 2S/LGBTQIA+ communities, people perceived to be mentally ill and other minoritised groups—to address epistemic injustice in co-creation methodologies and practice, thereby providing opportunities to begin to dismantle intersecting systems of oppression and structural violence.

Each Charter tenet speaks to a multilayered, multidimensional process that is foundational to shifting paradigms about redesigning our health and social systems and changing our relational practices. Readers are encouraged to share their reactions to the Charter, their experiences implementing it in their own work, and to participate in a growing international EqCC community of practice.

Inflammation is a key mediator in the development and progression of the atherosclerotic disease process as well as its resultant complications, like myocardial infarction (MI), stroke and cardiovascular (CV) death, and is emerging as a novel treatment target. Trials involving anti-inflammatory medications have demonstrated outcome benefit in patients with known CV disease. In this regard, colchicine appears to hold great promise. However, there are potential drawbacks to colchicine use, as some studies have identified an increased risk of infection, and a non-significant trend for increased all-cause mortality. Thus, a more thorough understanding of the underlying mechanism of action of colchicine is needed to enable a better patient selection for this novel CV therapy.

The primary objective of the Canadian Study of Arterial Inflammation in Patients with Diabetes and Recent Vascular Events, Evaluation of Colchicine Effectiveness (CADENCE) trial is to assess the effect of colchicine on vascular inflammation in the carotid arteries and ascending aorta measured with ¹⁸F-fluorodeoxyglucose (FDG) positron emission tomography (PET)/CT in patients with type 2 diabetes mellitus (T2DM) or pre-diabetes who have experienced a recent vascular event (acute coronary syndrome (ACS)/MI, transient ischaemic attack (TIA) or stroke). Secondary objectives include determining colchicine’s effect on inflammatory biomarkers (high-sensitivity C reactive protein (hs-CRP) and interleukin-6 (IL-6)). Additionally, we will assess if baseline inflammation imaging or biomarkers are associated with a treatment response to colchicine determined by imaging. Exploratory objectives will look at: (1) the difference in the inflammatory response to colchicine in patients with coronary events compared with patients with cerebral events; (2) the difference in the inflammatory response to colchicine in different vascular beds; (3) the relationship of FDG-PET imaging markers with serum biomarkers and (4) assessment of quality-of-life changes.

CADENCE is a multicentre, prospective, randomised, double-blinded, placebo-controlled study to determine the effect of colchicine on arterial inflammation as assessed with imaging and circulatory biomarkers, specifically carotid arteries and aortic FDG uptake as well as hs-CRP and IL-6 among others. Patients with T2DM or pre-diabetes who have recently experienced a CV event (within 30–120 days after an ACS (ie, ST-elevation MI (STEMI) or non-STEMI)) or TIA/stroke with documented large vessel atherosclerotic disease will be randomised to treatment with either colchicine 0.6 mg oral daily or placebo. Participants will undergo baseline clinical evaluation including EQ5D assessment, blood work for inflammatory markers and FDG PET/CT scan of the ascending aorta and left and right carotid arteries. Patients will undergo treatment for 6 months and have repeat clinical evaluation including EQ5D assessment, blood work for inflammatory markers and FDG PET/CT scan at the conclusion of the study. The primary outcome will be the change in the maximum target to background ratio (TBR_max) in the ascending aorta (or carotid arteries) from baseline to follow-up on FDG PET/CT imaging.

Colchicine is an exciting potential new therapy for CV risk reduction. However, its use is associated with side effects and greater understanding of its underlying mechanism of action is needed. Importantly, the current study will determine whether its anti-inflammatory action is an indirect systemic effect, or a more local plaque action that decreases inflammation. The results will also help identify patients who will benefit most from such therapy.

NCT04181996.