Dual biologic therapy in a patient with severe asthma and other allergic disorders

Combination of Biological Therapy in Severe Asthma: Where We Are?

Biological drugs have revolutionized the management of severe asthma. However, a variable number of patients remain uncontrolled or only partially controlled even after the appropriate administration of a biologic agent. The combination of two biologics may target different inflammatory pathways, and it has been used in patients suffering from uncontrolled severe asthma with evidence of both allergic and eosinophilic phenotypes or severe asthma and type2 comorbidities. Combination therapy has also been used to handle anti-IL4/13R induced hypereosinophilia. There is insufficient data on combining biologics for the treatment of severe uncontrolled asthma and type 2 comorbidities, also because of the high cost, and currently no guideline recommends dual biologic therapy. A systematic search was performed using the Medline and Scopus databases. Published data on concurrent administration of two biological drugs in severe, uncontrolled asthma patients has been reported in 28 real-world studies and 1 clinical trial. Data extraction was followed by a descriptive and narrative synthesis of the findings. Future studies should be conducted to further assess the safety, efficacy, and cost-effectiveness of this therapeutic strategy.

Review of Dual Biologics in Specialty Pharmacy Practice

OBJECTIVE

To describe and review the published evidence on use of multiple biologics within specialty pharmacy practice.

DATA SOURCES

A search of PubMed and Embase was conducted from October 2021 through September 2022. Keywords included biologics for immune-mediated conditions along with the terms "dual," "add-on," and "combination."

STUDY SELECTION AND DATA EXTRACTION

All human studies in the English language were considered. Published abstracts, case reports, case series, randomized controlled trials, systematic reviews, and meta-analyses were included.

DATA SYNTHESIS

Although evidence is limited, there are published meta-analyses of combined biologic use within gastroenterology and rheumatology. There are also numerous case reports within dermatology. Clinical trials of dual biologics for severe rheumatologic conditions and inflammatory bowel disease are in progress. Existing evidence for use in pulmonology and allergy suggest dual biologic therapy can be safe and effective, but data are limited. Literature describing use of monoclonal antibodies for other overlapping conditions is lacking.

RELEVANCE TO PATIENT CARE AND CLINICAL PRACTICE

This article reviews the evidence describing combination biologic use and outlines remaining knowledge gaps. It also describes the essential role that specialty pharmacists play in managing therapeutic mAbs.

CONCLUSIONS

High-quality evidence describing combination biologic use is limited and long-term safety data are lacking. Pharmacists should utilize their specialized training to assess appropriateness of therapy, provide patient counseling and monitor for safety and efficacy.

Successful simultaneous targeting of IgE and IL-5 in a severe asthmatic patient selected for lung transplantation

We report a case of severe uncontrolled allergic and eosinophilic asthma in which omalizumab had led to a fast remission. After 18 months, mepolizumab was added to omalizumab because of increased blood eosinophils and a deterioration of asthma control. Asthma was then under control for the next 18 months. Discontinuation of mepolizumab in the ensuing 6 months led to a decrease in asthma control and an increased eosinophilia. The introduction of benralizumab resulted in an immediate increase of lung function, asthma control test (ACT), and symptom relief. Before the introduction of biologics, the patient was on the list for transplantation due to respiratory insufficiency. High-resolution CT scans before and after biologic therapy demonstrated a reduction of bronchial wall thickening and mucous plugging as well as an increase in bronchial caliber. The patient did therefore not need a transplant. We conclude that the dual use of biologics may be efficient in some cases of severe asthma.

Long-Term Outcomes of Combination Biologic Therapy in Uncontrolled Severe Asthma: A Case Study

Introduction. Treatment with biologics has significantly reduced the social and economic burden of severe asthma. However, some patients may still feature a suboptimal control of their symptoms while on therapy. In this subset of asthmatic patients, a benefit from a dual biologic therapy has sporadically been reported in literature. Our aim is to add our experience to the limited body of evidence supporting combination biologic therapies.Case study. Here we present the case of a 68-year-old nonsmoker female, with an allergic and eosinophilic corticosteroid-dependent severe asthma. She displayed well controlled comorbidities and good adherence to the inhaled therapy. Omalizumab was started in 2008 with an initial remarkable clinical improvement. After nine years of biologic therapy, she reported a gradual worsening of her symptoms and exacerbations. Mepolizumab was then added in 2019.Results. The addition of Mepolizumab resulted in a meaningful amelioration of her quality of life, asthma control, number of exacerbations and 6-minute-walking-distance at three-year follow-up. The average Prednisone dosage was tapered from 25 mg to 20 mg daily. No adverse events were observed since the introduction of the second biologic.Conclusion. Our experience indicates that Mepolizumab may be beneficial and safe as an add-on biologic in a patient whose allergic and eosinophilic asthma remains uncontrolled despite treatment with an anti-IgE strategy. Further studies on a larger number of patients are required to demonstrate whether the positive outcomes published so far are replicable on a larger scale.

Combination treatment with monoclonal antibodies: Secukinumab, benralizumab and dupilumab for the combined management of psoriasis and severe asthma

Biological disease-modifying agents have increasingly become available for the effective treatment of both cutaneous and non-cutaneous inflammatory conditions. We report a case of a woman treated successfully for psoriasis and psoriatic arthritis with the IL-17 inhibitor secukinumab whilst simultaneously being treated for severe asthma and nasal polyps, initially with the IL-5 inhibitor benralizumab, followed by dupilumab, a monoclonal antibody that targets the IL-4 receptor alpha subunit which blocks signalling from both IL-4 and IL-13.