Efficacy of MP-AzeFlu in children with seasonal allergic rhinitis: Importance of paediatric symptom assessment

  • Berger W
  • Meltzer E
  • Amar N
 et al. 
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Abstract

BACKGROUND: This study aimed to assess the efficacy of MP-AzeFlu (a novel intranasal formulation of azelastine hydrochloride and fluticasone propionate in a single spray) in children with seasonal allergic rhinitis (SAR) and explore the importance of child symptom severity assessment in paediatric allergic rhinitis (AR) trials. METHODS: A total of 348 children (4-11 years) with moderate/severe SAR were randomized into a double-blind, placebo-controlled, 14-day, parallel-group trial. Efficacy was assessed by changes from baseline in reflective total nasal symptom score (rTNSS), reflective total ocular symptom score (rTOSS) and individual symptom scores over 14 days (children 6-11 years; n = 304), recorded by either children or caregivers. To determine whether a by-proxy effect existed, efficacy outcomes were assessed according to degree of child/caregiver rating. Moreover, total Paediatric Rhinitis Quality of Life Questionnaire (PRQLQ) score was compared between the groups. RESULTS: A statistically superior, clinically relevant efficacy signal of MP-AzeFlu versus placebo was apparent for PRQLQ overall score (diff: -0.29, 95% CI -0.55, -0.03; p = 0.027), but not for rTNSS (diff: -0.80; 95% CI: -1.75; 0.15; p = 0.099). However, as the extent of children's self-rating increased, so too did the treatment difference between MP-AzeFlu and placebo; MP-AzeFlu provided significantly better relief than placebo for rTNSS (p = 0.002), rTOSS (p = 0.009) and each individual nasal and ocular symptom assessed (except rhinorrhoea; p = 0.064) when children mostly rated their own symptoms. CONCLUSIONS: MP-AzeFlu is an effective treatment for AR in childhood. Caregivers are less able than children to accurately assess response to treatment with available tools. A simple paediatric-specific tool to assess efficacy in AR trials in children is needed.

Author-supplied keywords

  • Assessment
  • Azelastine
  • Children
  • Dymista
  • Fluticasone propionate
  • MP-AzeFlu
  • Seasonal allergic rhinitis

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