Formulary Management of Targeted Immune Modulators for Ulcerative Colitis: Environmental Scan

Details

An assessment of the current reimbursement of targeted immune modulators (TIMs) used to treat adults with moderate to severe ulcerative colitis (UC) is needed given the significant expenditures in Canada on biologic drugs, as well as the changing dynamics with regards to loss of exclusivity market entry of new drugs, and availability of new evidence. This Environmental Scan will assess the regulatory, exclusivity, Canada's Drug Agency review, and reimbursement status of TIMs for UC relevant to public drug plans.

Private IV Infusion Clinics in Canada

Details

With the number of IV infusion therapies approved in Canada on the rise, and several in the pipeline for potential future approval, Canada's Drug Agency is assessing the readiness of the Canadian health care system to effectively implement these drugs. As a first step, Canada's Drug Agency has conducted a web search to collect information on the locations of privately funded IV infusion clinics across the country. To our knowledge, this is the first inventory of private IV infusion clinic locations in Canada.

Utilization of Cholinesterase Inhibitors for Alzheimer’s Disease in Canada

Details

Alzheimer disease (AD) is a progressive neurodegenerative disorder and the leading cause of dementia worldwide. The cholinesterase inhibitors (ChEIs) donepezil, galantamine, and rivastigmine are first-line treatments for mild to moderate AD. 

This project was conducted to measure the utilization of ChEIs and determine prescribing patterns and expenditures in Canada from 2017 to 2020. The utilization of ChEIs may give an indication of the future use of drug products for the treatment of AD that are in clinical development.
 

Dapagliflozin for Chronic Kidney Disease

Details

Question(s)

  1. What is the clinical effectiveness of dapagliflozin for adults with chronic kidney disease?
  2. What is the cost-effectiveness of dapagliflozin for adults with chronic kidney disease?

Key Message

Recent, large, high-quality trials have demonstrated some benefits of dapagliflozin for the treatment of chronic kidney disease (most often in patients with type 2 diabetes) as compared to placebo.

Data describing the clinical effectiveness of dapagliflozin have identified both relative benefits and no differences compared to placebo in various measures of renal and cardiovascular health and function, as well as health care utilization, mortality, and adverse events.

A large proportion of the available data has been generated from the same randomized controlled trial that has recently been reported in multiple publications describing various patient subgroups and outcomes.

No evidence was identified describing the cost-effectiveness of dapagliflozin for the treatment of patients with chronic kidney disease.

Melatonin for the Treatment of Insomnia in Children and Adolescents

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Question(s)

  1. What is the clinical effectiveness of melatonin versus no treatment or placebo for the treatment of insomnia in children and adolescents?
  2. What is the clinical effectiveness of melatonin versus prescription sedatives for the treatment of insomnia in children and adolescents?
  3. What is the cost-effectiveness of melatonin versus no treatment or placebo for the treatment of insomnia in children and adolescents?
  4. What is the cost-effectiveness of melatonin versus prescription sedatives for the treatment of insomnia in children and adolescents?
  5. What are the evidence-based guidelines regarding the use of melatonin for the treatment of insomnia in children and adolescents?

Key Message

There is some evidence of benefit of melatonin compared with placebo for the short-term treatment of insomnia in children and adolescents with neurodisabilities.

The short-term safety profile of melatonin suggested that it was well-tolerated, although some severe adverse events may occur. There was a lack of long-term safety data.

The American Academy of Neurology guideline recommends high-grade melatonin should be prescribed for treatment of sleep disturbance in children and adolescents with autism spectrum disorder if first-line treatment with behavioural strategies is not helpful.

Evidence comparing the clinical effectiveness of melatonin with prescription sedatives for the treatment of insomnia in children and adolescents was not identified.

No evidence was found regarding the cost-effectiveness of melatonin compared with placebo or prescription sedatives for the treatment of insomnia in children and adolescents.

Improving Access to Primary Care in Canada

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Primary care is the first point of contact for health and wellness services, coordinating each person’s services in a way that ensures continuity and ease of movement across the system. A strong primary health care system takes a whole-of-society approach to health and well-being and focuses on the holistic needs and preferences of individuals, families, and communities. Access to primary care can have barriers such as culture, language, location, social and economic standing, and in Canada is a known challenge.

Systemic Thrombolysis by Alteplase for Acute Ischemic Stroke

Details

Question(s)

  1. What is the clinical effectiveness of systemic thrombolysis by alteplase in patients with acute ischemic stroke if administered within 3 hours of symptom onset?
  2. What is the clinical effectiveness of systemic thrombolysis by alteplase in patients with acute ischemic stroke if administered between 3 hours and 4.5 hours from symptom onset?

Key Message

Evidence was summarized to determine the effect of alteplase in adult stroke patients. There is substantial uncertainty concerning the evidence due to the risk of bias in the available studies and imprecision in how the magnitude of the treatment effects were estimated.

The identified research suggests that alteplase administered within 3 hours of a stroke might result in:

  • fewer deaths after 18 months and little-to-no difference in death after 7 days, 3 months, 6 months, or 3 years
  • increased brain bleeds after 7 days but no difference after 36 hours or after 3 months
  • improvements in functioning and independence after 7 days and after 6 months; at 3 months, some studies showed no difference in independence and another study showed higher functioning.

The identified research suggests that alteplase administered between 3 hours and 4.5 hours after a stroke might result in:

  • little-to-no difference in deaths after 3 months; at 7 days, some evidence showed little-to-no difference in death while other evidence suggested more deaths
  • little-to-no differences in brain bleeds after 36 hours; at 7 days, some evidence showed no effect on brain bleeds, while other evidence showed more brain bleeds
  • no differences in functioning and independence after 6 months; at 3 months, some evidence showed no effect on functioning, while other evidence reported improved functioning.

 

Monitoring Patients With Psychotic Disorders for Clozapine-Induced Myocarditis or Cardiomyopathy

Details

Question(s)

  1. What is the diagnostic accuracy of high-sensitivity troponin I testing versus troponin T testing for detecting myocarditis or cardiomyopathy in patients receiving clozapine for psychotic disorders?
  2. What are the evidence-based guidelines on the use of clozapine for patients with psychotic disorders?

Key Message

Three evidence-based guidelines were identified about the use of clozapine for patients with psychotic disorders.

The included guidelines provide recommendations for testing and assessment of key health parameters for patients who are prescribed clozapine via various means such as laboratory tests and electrocardiogram.

The guidelines provide recommendations of co-prescription for patients who have not responded adequately to an optimized dose of clozapine alone.

Two guidelines offer specific recommendations on clozapine dosing.

The guidelines were generally well developed, clearly reported, and consistent in their recommendations. However, several of the recommendations were derived from sources of evidence that may not be considered of the highest quality, with the strength of recommendation not reported and unclear.

The diagnostic accuracy of high-sensitivity troponin I testing versus troponin T testing for detecting myocarditis or cardiomyopathy in patients receiving clozapine for psychotic disorders is unknown as no relevant evidence was identified.

Given the limited availability and varying quality of evidence, the diagnostic accuracy of high-sensitivity troponin I testing and how best to monitor for clozapine-induced myocarditis and cardiomyopathy in patients with psychotic disorders remains uncertain.

Guidelines for Pediatric Immune Thrombocytopenia

Details

Question(s)

  1. What are the evidence-based guidelines regarding dapsone for pediatric patients with immune thrombocytopenia?
  2. What are the evidence-based guidelines regarding rituximab for pediatric patients with immune thrombocytopenia?
  3. What are the evidence-based guidelines regarding thrombopoietin receptor agonists for pediatric patients with immune thrombocytopenia?

Key Message

Three guidelines included in this report recommend rituximab, thrombopoietic agents (drugs that promote platelet growth), and thrombopoietin receptor agonists (e.g., romiplostim, eltrombopag) over splenectomy as second-line treatment in children with immune thrombocytopenia who do not respond to first-line treatment.

Three guidelines included in this report recommend for children with persistent or chronic immune thrombocytopenia who have no response to 1 thrombopoietin receptor agonist or who lose an initial response that treatment can be switched to another thrombopoietin receptor agonist and/or combined with mycophenolate mofetil or another immunosuppressant. For individuals who do not respond to thrombopoietin receptor agonists, the recommendation is to consider rituximab and dexamethasone, especially for adolescent females.

No relevant evidence-based recommendation was identified regarding the use of dapsone for the treatment of children with immune thrombocytopenia.

CADTH and the Canadian Institute for Health Information (CIHI) Real-World Evidence Feasibility Collaboration

Details

There is increasing interest in the use of real-world data to generate real-world evidence (RWE) to complement evidence from randomized clinical trials for the purpose of decision-making.