Analysis of questionnaire survey to determine worldwide trends in prescriptions of biologics for the treatment of unresponsive chronic urticaria

Background

Chronic spontaneous urticaria (CSU) is a common condition treated by allergist/immunologists, but the only FDA-approved biologic medication, omalizumab, may be underutilized globally.

Objective

This study was performed to determine the global prescription of omalizumab for treatment of CSU by allergists/immunologists.

Methods

Anonymous questionnaire surveys were distributed online to World Allergy Organization (WAO) members worldwide. Categorical data were analyzed for descriptive analysis using one-way frequency tabulation in SAS 9.4.

Results

There were 348 respondents (43 missing data); Average age 51 (range 28-90); M/F 48%/52%. 58% had > 15 years of clinical experience and 10% < 5; 42% worked in private clinics, 36% public hospitals, 24% academia, 18% private hospitals, and 4% in community practice. Eighty-two percent (82%) prescribed omalizumab for CSU patients and use of omalizumab was highest among young practitioners. The most significant barriers were cost (63%) and restricted formulary (24%). Drug safety (63%) and chances of adverse events (47%) were the most significant factors deciding treatment. Twenty-two percent (22%) reported 80-100% of CSU patients were complete responders to omalizumab; 34% preferred increasing frequency (q 2-weeks), and 18% preferred increasing dose (600 mg q 4-weeks) for partial or non-responders. UAS7, UCT, and CU-QoL were used to assess CSU by 55%, 29%, and 25% of respondents, respectively. Autoimmune thyroid disease (62%), thyroid abnormality (43%) and allergic rhinitis (35%) were the most frequent comorbidities reported.

Conclusions

Most clinicians favored omalizumab over other potential treatments due to safety. Although younger clinicians were more likely to prescribe omalizumab, cost and formulary access were major barriers. Only 22% of respondents reported 80% or greater of their patients had complete response to omalizumab, indicating the need for novel CSU therapies.

Existing and Investigational Medications for Refractory Chronic Spontaneous Urticaria: Safety, Adverse Effects, and Monitoring

Treatment of chronic spontaneous urticaria (CSU) is responsive to H1 antihistamines administered up to four times the recommended US Food and Drug Administration dose in approximately 50% of patients. However, when patients do not respond to these first-line agents, evidence-based guidelines using Grading of Recommendations, Assessment, Development, and Evaluations methodology have provided direction for second- and third-line treatments that can effectively treat patients with CSU. Some patients remain refractory to these advanced treatments; therefore, alternative treatments with a lower certainty of evidence may be necessary. Regardless of the therapies used to treat CSU patients, it is essential for clinicians to be knowledgeable about the mechanism of action, efficacy, and safety and monitoring recommendations of the treatments prescribed. This review provides a comprehensive review of the adverse effects and monitoring recommendations for agents in use for CSU treatment as well as those currently undergoing investigation for CSU treatment.

Psychosocial Aspects of Food Allergy: Resiliency, Challenges and Opportunities

Food allergy is a public health concern and has been found to be increasing in prevalence; however, psychosocial factors differentiate challenges related to management throughout the lifespan. Resilience has been found to improve quality of life in other chronic diseases, but little has been published regarding increasing resilience in food allergy. The psychosocial impacts of food allergy vary by age group and developmental stage. This article reviews developmental milestones within the context of food allergy in infancy, school-age children, adolescents, and adults. Recommendations for promoting resilience in patients with food allergy are provided.