Consequences of long-term oral corticosteroid therapy and its side-effects in severe asthma in adults: a focused review of the impact data in the literature

Oral Corticosteroid Use for the Treatment of Chronic Eosinophilic Disease: A Patient's and His Physician's Experience

This article, coauthored by a patient with eosinophilic granulomatosis with polyangiitis (EGPA) initially presenting as severe eosinophilic asthma and his physician-specialist, discusses the use and management of oral corticosteroid (OCS) treatment. It also considers the importance of early diagnosis of a rare disease and patient education. The patient describes his journey from progressive worsening of asthma and eventual diagnosis of EGPA to long-term OCS treatment and then participation in a clinical trial for this rare disease, involving the introduction of targeted biologic therapy with OCS tapering. The physician describes the importance of patient referral to obtain a correct diagnosis and optimal maintenance treatment, the balance between risk of adverse events associated with long-term OCS use and benefits of disease control, and various aspects of patient participation in clinical trials. Finally, the patient describes the role of continual patient education in the management of disease and OCS treatment. These considerations can apply to all chronic inflammatory diseases requiring maintenance OCS treatment.

Funding: AstraZeneca.

ERS/EAACI statement on severe exacerbations in asthma in adults: facts, priorities and key research questions

Despite the use of effective medications to control asthma, severe exacerbations in asthma are still a major health risk and require urgent action on the part of the patient and physician to prevent serious outcomes such as hospitalisation or death. Moreover, severe exacerbations are associated with substantial healthcare costs and psychological burden, including anxiety and fear for patients and their families. The European Academy of Allergy and Clinical Immunology (EAACI) and the European Respiratory Society (ERS) set up a task force to search for a clear definition of severe exacerbations, and to also define research questions and priorities. The statement includes comments from patients who were members of the task force.

Strategies to reduce corticosteroid-related adverse events in asthma

PURPOSE OF REVIEW

Severe asthmatics, despite the chronic use of high inhaled corticosteroids (ICS) doses and frequent intake of systemic corticosteroids, remains clinically and/or functionally uncontrolled. These patients are also often affected by rhinitis or chronic rhinosinusitis requiring frequent use of intranasal corticosteroids. Therefore, severe asthmatics are exposed to an overload of corticosteroids that is frequently associated with relevant and costly adverse events. This clinical problem and the strategies to overcome it are here summarized.

RECENT FINDINGS

Different therapeutic options may help in reducing the corticosteroid load in asthmatics, ranging from allergy immunotherapy (nonsuitable for severe uncontrolled patients), immunosuppressant agents like methotrexate or cyclosporine, novel biologic drugs (mainly anti-IgE, anti-IL5 and anti-IL4-receptor-alpha), and aspirin desensitization (for patients with anti-inflammatory drugs exacerbated respiratory disease).

SUMMARY

The evidence of even serious corticosteroid-related adverse events associated with consistent health-care costs, should prompt the entire scientific community and health regulatory authorities to promote actions to increase the use of well tolerated and effective strategies to reduce the corticosteroid need in asthmatics; the most promising option seems to be the add-on use of biologic agents.

Is there a relationship between asthma and diabetes?

Background: There is an ongoing discussion regarding the coexistence of bronchial asthma and diabetes. The objective of the study was to assess the relationship between asthma and the diabetes course and the influence of corticosteroid therapy in asthma on diabetes control.Methods: This was a cross-sectional study. There were 2431 adult patients who were selected from 40,015 patients and assigned to subgroups of patients with only asthma, with both asthma and diabetes and with only diabetes. The following parameters were measured: fasting blood glucose level, oral glucose tolerance and glycated hemoglobin (HbA1c).Results: The value of HbA1c in patients with asthma and diabetes was compared to the value of this parameter in patients suffering only from diabetes: 7.23 ± 1.73% versus 7.42 ± 2.09% (P > 0.05). The diabetes control criteria were met in 48.5% patients with asthma and concomitant diabetes and in 50.6% patients who suffered only from diabetes. There was a negative relationship between severe asthma and diabetes control. A daily dose of budesonide up to 825 mcg used by asthmatic and diabetic patients had no significant influence on fasting glucose.Conclusions: The effect of asthma on diabetes does not seem to be significant, except for in patients with severe asthma. Inhaled steroids administered in low or mild doses do not affect fasting glycemia.

Living well with severe asthma

Living well with severe asthma can be challenging. People with severe asthma can be refractory to treatment, can experience poor symptom control and are at a heightened risk of death. Patients experience symptoms of shortness of breath, chest tightness, cough and wheeze. These symptoms influence many aspects of an individual's life, resulting in emotional, financial, functional and medication-related burdens that negatively impact quality of life. Quality of life is known to be influenced by individual levels of satisfaction that stem from real-life treatment experiences. This experience is portrayed through the lens of the patient, which is commonly referred to as the patient perspective. The patient perspective is only one element of the patient experience. It influences health status, which, in severe asthma, is commonly assessed using validated health-related quality of life measures. A positive patient perspective may be achieved with implementation of management strategies tailored to individual needs. Management strategies developed in partnership between the patient, the severe asthma multidisciplinary team and the general practitioner may minimise disease-related impairment, allowing patients to live well with severe asthma.

Key points

Despite advances in treatment over the past decade, the experience of living with severe asthma has not significantly improved, with high levels of burden influencing the patient perspective.The impact of severe disease is not only restricted to asthma symptoms and acute attacks. It causes significant emotional, financial, functional and medication-related burdens, leading to impaired health-related quality of life.Clinical outcomes should not be stand-alone measures in severe asthma. Nonclinical measures should also be considered when evaluating health-related quality of life.Disease burden may be minimised and quality of life improved via self-management strategies, including education sessions, written asthma action plans, symptom monitoring, breathing exercises, physical activity and psychotherapeutic interventions.

Educational aims

To demonstrate the importance of the patient perspective in severe asthma.To identify the significant levels of disease burden associated with severe asthma.To discuss quality of life in severe asthma.To outline strategies that increase well-being in severe asthma.

The emergence of new biologics for severe asthma

Patients with severe asthma experience severe symptoms and frequent exacerbations despite intensive treatment with inhaled and oral glucocorticoids. Biologics for severe asthma aim to reduce asthma-related and glucocorticoid-induced morbidity. Recently, new biologics targeting interleukin (IL)-5, IL-5 receptor and IL-4/IL-13, which are all cytokines involved in so-called type 2 airway inflammation, were approved for severe asthma. They show a reduction in exacerbation rate and an oral glucocorticoid-sparing effect. Studies with upstream biologics targeting alarmin cytokines such as thymic stromal lymphopoietin (TSLP) and IL-33 are underway, and newly designed bispecific antibodies targeting more than one pathway are in early phases of development. Such pathway-targeted add-on treatments will soon become standard of care for all patients with severe asthma.

[Update in severe asthma physiopathology and treatments]

Asthma is an inflammatory airway disease which presentation is highly heterogeneous. Last two decades provided new clinical and basic data concerning asthma physiopathology that make global understanding much complex. Phenotypes based on clinical settings and paraclinical investigations from large cohorts confirm old paradigm (eosinophilic vs. non-eosinophilic asthma) but also introduce new concepts (obesity-related asthma, late onset asthma, etc.). Conversely, improvement of big data analytics allows to initiate new cohorts aiming at better understanding the pathophysiology underlying those phenotypes and unraveling new ones. However, clinical and therapeutic impacts of those big data need to be further detailed. In parallel, biotherapies and innovative techniques as bronchial thermoplasty become available for severe asthmatic patients who did not respond to specific treatment in the past. Development of a personalized medicine in severe asthma becomes an important challenge for tomorrow. This review will focus on new pathophysiological concepts arisen from large cohorts and new therapeutic strategies available and in progress for severe asthma.

Over- and under-diagnosis in asthma

Asthma is extremely common with a prevalence of approximately 10% in Europe. It presents with symptoms which have a broad differential diagnosis and examination can be entirely normal. There is no agreed gold standard to diagnose asthma, and the objective tests that can aid diagnosis are often poorly available to primary care physicians. There is evidence that asthma is widely misdiagnosed. Overdiagnosis leads to unnecessary treatment and a delay in making an alternative diagnosis. Underdiagnosis risks daily symptoms, (potentially serious) exacerbations and long-term airway remodelling. An agreed standardised approach to diagnosis, with inclusion of objective measurements prior to treatment, is required to reduce misdiagnosis of asthma.

Asthma is frequently misdiagnosed. Both over- and under-diagnosis are associated with inappropriate treatment and potential patient harm. Although no gold standard diagnostic test is available, objective testing can improve diagnostic accuracy.http://ow.ly/Ej3830ohfxJ

Severe refractory asthma: current treatment options and ongoing research

Patients with severe asthma have a greater risk of asthma-related symptoms, morbidities, and exacerbations. Moreover, healthcare costs of patients with severe refractory asthma are at least 80% higher than those with stable asthma, mainly because of a higher use of healthcare resources and chronic side effects of oral corticosteroids (OCS). The advent of new promising biologicals provides a unique therapeutic option that could achieve asthma control without OCS. However, the increasing number of available molecules poses a new challenge: the identification and selection of the most appropriate treatment. Thanks to a better understanding of the basic mechanisms of the disease and the use of predictive biomarkers, especially regarding the Th2-high endotype, it is now easier than before to tailor therapy and guide clinicians toward the most suitable therapeutic choice, thus reducing the number of uncontrolled patients and therapeutic failures. In this review, we will discuss the different biological options available for the treatment of severe refractory asthma, their mechanism of action, and the overlapping aspects of their usage in clinical practice. The availability of new molecules, specific for different molecular targets, is a key topic, especially when considering that the same targets are sometimes part of the same phenotype. The aim of this review is to help clarify these doubts, which may facilitate the clinical decision-making process and the achievement of the best possible outcomes.