World Allergy Organization Journal (Jan 2024)

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

  • Christine J. Rubeiz, MD,
  • Ricardo Asero, MD,
  • Stephen Betschel, HBSc, MD, FRCP (C),
  • Timothy Craig, DO,
  • Anete Grumach, MD, PhD,
  • Michihiro Hide, MD, PhD,
  • David Lang, MD,
  • Michael Levin, MD, PhD,
  • Hilary Longhurst, MA, PhD, FRACP, FRCPath,
  • Eli Magan, MD,
  • Marcus Maurer, MD,
  • Romi Saini, MD,
  • Gordon Sussman, MD,
  • Elias Toubi, MD,
  • Dinh Nguyen Van, MD, PhD,
  • Torsten Zuberier, MD,
  • Jonathan A. Bernstein, MD

Journal volume & issue
Vol. 17, no. 1
p. 100858

Abstract

Read online

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.

Keywords