Publications by authors named "Margot Davis"

Introduction: Niraparib, a PARP1/2 inhibitor, is newly approved in combination with abiraterone acetate (AA) plus prednisone or prednisolone (niraparib/AA+P) for the treatment of adult patients with BRCA-mutated, treatment-naïve metastatic castration resistant prostate cancer (mCRPC). Detailed guidance beyond the prescribing information may be helpful in managing the side effect profile and dosing practicalities of this combination therapy.

Materials And Methods: A panel of specialists convened to design management algorithms for four common niraparib/AA+P treatment-related adverse events (AEs) in mCRPC; anemia, thrombocytopenia, hypertension, and nausea.

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  • The ATTR-ACT study aimed to assess the effectiveness of tafamidis in treating transthyretin amyloid cardiomyopathy (ATTR-CM) over a period of up to 2.5 years, with participants either receiving tafamidis or a placebo.
  • In the long-term extension study, participants who initially received tafamidis maintained their quality of life and heart failure symptoms, while those who switched from placebo to tafamidis experienced slower worsening of their conditions.
  • The researchers concluded that tafamidis is beneficial in slowing down the decline in quality of life and heart failure symptoms for people with ATTR-CM, suggesting that early treatment is important.
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Background: Atrial fibrillation/atrial flutter (AF/AFL) are common manifestations of transthyretin amyloid cardiomyopathy (ATTR-CM) but have not been found to be predictive of mortality.

Objectives: This analysis aimed to examine whether baseline or historical AF/AFL at enrollment was prognostic for all-cause mortality.

Methods: In the ATTR-ACT (Tafamidis in Transthyretin Cardiomyopathy Clinical Trial), a 30-month study of tafamidis vs placebo for ATTR-CM, AF/AFL was evaluated as an independent prognostic factor for all-cause mortality using Cox proportional hazards modelling.

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Breast arterial calcifications (BAC) on mammography have been correlated with increased cardiovascular risk. The Canadian Society of Breast Imaging released a position statement on BAC reporting in January 2023. This study evaluates the awareness of the clinical significance of BAC and reporting preferences of referring physicians in Canada.

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  • The national opioid crisis persists, with opioid use disorder (OUD) being a treatable condition, yet access to Medications for Opioid Use Disorder (MOUD) is hindered by payment-related barriers.
  • A critical review identified 18 key barriers from both patient and provider perspectives, primarily focusing on issues like insurance coverage for patients and low reimbursement rates for providers.
  • Efforts in Massachusetts have targeted addressing these barriers through community action plans, successfully addressing about half of the identified payment challenges to improve access to and retention in MOUD programs.
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Introduction: People with substance use disorders (SUD) face many barriers to receiving evidence-based treatments including access to and cost of treatment. People who use drugs face stigma that limits access to traditional office-based clinics. With the goal of reducing morbidity and mortality, mobile clinics reduce many of these barriers by providing harm reduction and on-demand low-threshold medical care.

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Aims: To evaluate the effect of long-term tafamidis treatment on health-related quality of life (HRQoL) in patients with transthyretin amyloid cardiomyopathy (ATTR-CM) enrolled in the Tafamidis in Transthyretin Cardiomyopathy Clinical Trial (ATTR-ACT) and long-term extension (LTE) study.

Methods And Results: We examined change from baseline in Kansas City Cardiomyopathy Questionnaire overall summary (KCCQ-OS) and clinical summary (KCCQ-CS) scores in patients who received tafamidis meglumine 80 mg for 30 months in ATTR-ACT and tafamidis (meglumine 80 mg or bioequivalent free acid 61 mg) for 30 months in the LTE study, and in patients who received placebo for 30 months in ATTR-ACT and tafamidis for 30 months in the LTE study. In ATTR-ACT, 176 and 177 patients were randomized to tafamidis 80 mg and placebo, respectively.

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  • The number of people with amyloidosis is going up because doctors know more about it and better treatments are available.
  • Having expert centers for treating amyloidosis can help patients get the best care and improve research on the disease.
  • A survey was created by a team of experts to figure out what these centers should do to provide the best treatment possible.
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Cardiovascular disease (CVD) and cancer are leading causes of mortality and morbidity worldwide and are the major focus of the World Health Organization's joint prevention programs. While, diverse diseases, CVD and cancer, have many similarities. These include common lifestyle-related risk factors and shared environmental, metabolic, cellular, inflammatory, and genetic pathways.

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With overdose deaths increasing, improving access to harm reduction and low barrier substance use disorder treatment is more important than ever. The Community Care in Reach model uses a mobile unit to bring both harm reduction and clinical care for addiction to people experiencing barriers to office-based care. These mobile units provide many resources and services to people who use drugs, including safer consumption supplies, naloxone, medication for substance use disorder treatment, and a wide range of primary and preventative care.

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Introduction: Health plans are key players in substance use treatment in the United States, and the opioid crisis presents new challenges for them. This article is part of the HEALing Communities Study (HCS) funded by NIH, which seeks to facilitate communities' adoption of activities that might reduce overdose deaths, including overdose prevention education and naloxone distribution, medication for opioid use disorder, and safer opioid prescribing. We examine how health plans in one state (Massachusetts) are adapting to encourage and sustain activities that help communities to address opioid use disorder (OUD).

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Background: Cardiovascular disease (CVD) incidence is higher in men with prostate cancer (PC) than without.

Objectives: We describe the rate and correlates of poor cardiovascular risk factor control among men with PC.

Methods: We prospectively characterized 2,811 consecutive men (mean age 68 ± 8 years) with PC from 24 sites in Canada, Israel, Brazil, and Australia.

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Amyloidosis is a rare protein misfolding disease caused by the accumulation of amyloid fibrils in various tissues and organs. There are different subtypes of amyloidosis, with light chain (AL) amyloidosis being the most common. Amyloidosis is notoriously difficult to diagnose because it is clinically heterogeneous, no single test is diagnostic for the disease, and diagnosis typically involves multiple specialists.

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Doxorubicin is a commonly used chemotherapeutic drug, but its use is limited by doxorubicin-induced cardiotoxicity (DIC), which can lead to irreversible heart failure and death. A missense variant rs2229774 (p.S427L) in the retinoic acid receptor gamma (RARG) gene is associated with increased susceptibility to DIC, but the precise mechanism underlying this association is incompletely understood.

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Article Synopsis
  • Cardiovascular disease is a major issue for men with prostate cancer, and low testosterone levels can increase their risk of heart problems.
  • A study looked at 1,326 men with prostate cancer who hadn’t started hormone therapy and found that 42% of them had low testosterone.
  • Men with low testosterone were more likely to have other health issues like heart disease, diabetes, and obesity, making them at greater risk for future cardiovascular events.
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In this update of the Canadian Cardiovascular Society heart failure (HF) guidelines, we provide comprehensive recommendations and practical tips for the pharmacologic management of patients with HF with reduced ejection fraction (HFrEF). Since the 2017 comprehensive update of the Canadian Cardiovascular Society guidelines for the management of HF, substantial new evidence has emerged that has informed the care of these patients. In particular, we focus on the role of novel pharmacologic therapies for HFrEF including angiotensin receptor-neprilysin inhibitors, sinus node inhibitors, sodium glucose transport 2 inhibitors, and soluble guanylate cyclase stimulators in conjunction with other long established HFrEF therapies.

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Background: Trastuzumab reduces risk of breast cancer recurrence but carries risk of cardiotoxicity that may be reversible upon treatment cessation and institution of left ventricular (LV) enhancement therapies (LVETx). We assessed management patterns of trastuzumab-induced cardiotoxicity (TIC) in a contemporary real-world setting.

Methods: We reviewed charts of all breast cancer patients who received adjuvant trastuzumab in British Columbia between January 2010 and December 2013, spanning the opening of a cardio-oncology clinic.

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Summary: As states plan to implement system-wide change of any kind, it is important to understand program directors' perspectives on challenges they face. This is especially true with quality improvement reforms. Much research has focused on quality improvement in medicine, but there is a gap in our knowledge about programs that treat individuals with drug or alcohol use.

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Introduction: Many people drop out of substance use disorder (SUD) treatment within the first few sessions, which suggests the need for innovative strategies to address this. We examined the effectiveness of incentive-based contracting for Maine's publicly funded outpatient (OP) and intensive outpatient (IOP) SUD treatment, to determine its potential for improving treatment engagement and retention.

Methods: Maine's incentive-based contract with federally block grant-funded OP and IOP treatment agencies created a natural experiment, in which we could compare treatment engagement and retention with a group of state-licensed treatment agencies that were not part of the incentive-based contract.

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Cardiac amyloidosis is an emerging and important cause of heart failure, arrhythmia, and other cardiovascular disease in Canada. In this context, many centres have expressed interest in the development of effective care pathways for screening, evaluating, and treating this rapidly growing patient population. In October 2019, a group of Canadian stakeholders met, including specialists in cardiac amyloidosis, experts in heart failure and chronic disease management, and academic and community-based cardiologists at various stages of cardiac amyloidosis clinic development.

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Introduction: Across all cancer sites and stages, prostate cancer has one of the greatest median five-year survival rates, highlighting the important focus on survivorship issues following diagnosis and treatment. In the current study, we sought to evaluate the prevalence and predictors of depression in a large, multicenter, contemporary, prospectively collected sample of men with prostate cancer.

Methods: Data from the current study were drawn from the baseline visit of men enrolled in the RADICAL PC study.

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Doxorubicin is a potent anticancer drug used to treat a variety of cancer types. However, its use is limited by doxorubicin-induced cardiotoxicity (DIC). A missense variant in the RARG gene (S427L; rs2229774) has been implicated in susceptibility to DIC in a genome wide association study.

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In clinical practice, cancer management does not consistently encompass screening and identification of cardiovascular (CV) risk. The use of androgen deprivation therapy (ADT) in prostate cancer has been associated with increased CV risk and development of metabolic syndrome, necessitating identification of patients at risk in this population (e.g.

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Cardiovascular diseases are a common cause of morbidity and mortality in cancer survivors. Furthermore, some cancer therapies are now being increasingly recognized to have negative cardiovascular effects, or cardiotoxicity. Exercise therapy has been found to improve cardiorespiratory fitness in patients with cancer as well as attenuate the cardiotoxic effects of cancer therapy.

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