TRICS-IV is an international, multi-centre, open-label randomized controlled trial of two commonly used transfusion strategies in moderate to high risk patients who are 65 years of age or younger undergoing cardiac surgery on cardiopulmonary bypass, using a superiority trial design.

This study seeks to understand the effects of adult day programs on older adults, especially those with dementia, and their caregivers. A prospective cohort study will be conducted in the Canadian provinces of Alberta, British Columbia, Manitoba, and Ontario. Participants will be (1) older adults with dementia who attend a day program, and their caregivers, and (2) older adults with dementia in the community who do not attend a day program, and their caregivers. The objectives are to (1) evaluate the effects of day programs on attendee and caregiver outcomes, and (2) compare day program use patterns, attendee and caregiver social identities, day program characteristics, and day program outcomes between the 4 provinces, and (3) to explore what attendee and caregiver social identities and day program characteristics are associated with study outcomes, and with day program attendance/non-attendance.

The DEFEND trial will be the world's first clinical trial to study the effectiveness of Paxlovid or Veklury in the prevention of cardiovascular post-acute sequelae of SARS-CoV-2 among hospitalized adults. Additionally, this pilot study will inform the design and conduct of a future full-scale multi-centre trial by testing the feasibility and accuracy of this study design.

This study will investigate the safety and tolerability of ADP-A2M4CD8 T-cell therapy in subjects who have the appropriate human leukocyte antigen (HLA) and MAGE-A4 tumor antigen. Tumor indications include endometrial, esophageal, esophagogastric junction (EGJ), gastric, head and neck, melanoma, non-small cell lung (NSCLC), ovarian or urothelial cancer.

In this study, researchers will learn more about a study drug called litifilimab (BIIB059) in participants with systemic lupus erythematosus (SLE). The study will focus on participants who have active disease and are already taking standard of care medications. These may include antimalarials, steroids, and immunosuppressants. The main objective of the study is to learn about the effect litifilimab has on lowering the activity of the disease. The main question researchers want to answer is: - How many participants have an improvement in their symptoms after 52 weeks of treatment? Researchers will answer this and other questions by measuring the symptoms of SLE over time using a variety of scoring tools. These include the SLE Responder Index (SRI), the Systemic Lupus Erythematosus Disease Activity Index-2000 (SLEDAI-2K), and the Patient Global Assessment - Visual Analog Scale (PGA-VAS). Researchers will also learn more about the safety of litifilimab. They will study how participants' immune systems respond to litifilimab. Additionally, they will measure the effect litifilimab and SLE have on the quality of life of participants using a group of questionnaires. The study will be done as follows: * After screening, participants will be randomized to receive either a high or low dose of litifilimab, or placebo. A placebo looks like the study drug but contains no real medicine. * All participants will receive either litifilimab or placebo as injections under the skin once every 4 weeks. The treatment period will last 52 weeks. Participants will continue to take their standard of care medications. * Neither the researchers nor the participants will know if the participants are receiving litifilimab or placebo. * There will be a follow-up safety period that lasts up to 24 weeks. * In total, participants will have up to 22 study visits. The total study duration for participants will be up to 80 weeks.

The ASAP Trial is a 5-year, multi-centre, randomized controlled trial that will assess the efficacy, safety, and tolerability of aggressive smoking cessation therapy among people at elevated cardiovascular risk. It will recruit 798 adult patients smoking on average at least 10 conventional (tobacco) cigarettes per day who are motivated to quit smoking and have either been diagnosed with ACS requiring hospitalization or are outpatients at elevated cardiovascular risk. Patients will be randomized (1:1) to one of two treatment arms: (1) combination therapy of varenicline and nicotine e-cigarettes plus counseling or (2) varenicline plus counseling for 12 weeks, with 52-week follow-up.

This is a long-term, multi-center, observational study in children 2.5 to \<17 years with achondroplasia (ACH). The objective is to evaluate growth, ACH-related medical complications, assessments of health-related quality of life, body pain, functional abilities, cognitive functions, and treatments of study participants. No study medication will be administered.

The heart is a pump that must both fill and empty effectively to move blood; if it cannot move enough, heart failure may ensue. Approximately half of all adults living with heart failure have a form where the heart stiffens, which impairs its ability to fill. This form of heart failure particularly affects females and older adults. When people exercise, extra blood returns to the heart. The healthy heart can easily fill and move this extra blood to the muscles. However, when the heart's ability to fill is impaired, the extra blood can back up and pool in the lungs. Blood pooling in the lungs makes people feel breathless, although the investigators do not fully understand why, and this form of heart failure has a high risk of hospitalization and death, but few effective treatments are available. Exercise is one of the few treatments that works well if enough exercise is performed regularly. However, many people with this form of heart failure can only tolerate a small amount before stopping due to severe breathlessness, which can put them off from exercising regularly. The study's goal is to help these people perform more exercise. The investigators will use a novel form of stationary cycling with a plastic chamber around the lower body that seals at the waist. The chamber can apply suction to the lower body during exercise which will reduce how much extra blood returns and prevent the heart and lungs from being overloaded. Participants will attend 5 visits, including 3 where they will perform a submaximal exercise test for as many minutes as possible with or without light suction. In each of these tests, the investigators will record how long they exercise and ask them to rate how breathless they feel. The investigators will also study their breathing pattern, using a mouthpiece and pressure sensor, and heart function, using ultrasound imaging. This work will help adults living with heart failure exercise more and improve their health, and help researchers understand what causes breathlessness and develop new treatments.

It is crucial to understand the social and economic context in which children and youth live; their social determinants of health (SDH). Although this is well recognized, many health care providers do not address SDH because of the lack of easily accessible resources once social needs are identified. Social workers (SW) have the ability to support families once a social need has been identified. However, not every clinic has a SW, and even those that do often struggle to meet the needs of all the families requiring support. The use of social navigators (SN) is an innovative solution for an unmet need. SN models have been successful in primary care settings, but, to date, have not been adapted to address the SDH needs of children and their families receiving care in pediatric specialty care settings. We will implement the first of its kind pediatric SN clinic at the Children's Hospital of Eastern Ontario (CHEO): "Navigating Social Resources for Children's Health" (NSRCH). Our study will evaluate NSRCH - an innovative, transferable, and low-cost pediatric-specific SN model. Our goal is to support families with SDH needs to access timely, appropriate supports and resources via NSRCH.

This is a pilot cluster randomized controlled trial to to evaluate the individual and health system impacts of implementing a new physiotherapist-led primary care model for hip and knee pain in Canada.