Preventing Childhood Asthma Using Prophylactic House Dust Mite Allergen Immunotherapy

NCT05113394 — Phase 2, Withdrawn, Boston Children's Hospital

ClinicalTrials Daily  ·  Areas  ·  Conditions  ·  Drugs  ·  Sponsors  ·  
RegistryNCT05113394, acronym PAPA
StatusWithdrawn - Awaiting funding
PhasePhase 2
Study typeInterventional; randomized, parallel, masking: single, prevention
SponsorBoston Children's Hospital (Other); collaborators: Children's Hospital Medical Center, Cincinnati, University of North Carolina, Chapel Hill, George Washington University, Emory University, University of Southampton, Imperial College London
ConditionsAsthma, Allergy
InterventionsHDM sublingual Immunotherapy, Placebo (Drug)
Datesstart 2027-02-01 (estimated), primary completion 2028-02-01 (estimated), completion 2029-08-01 (estimated), first posted 2021-11-09, last updated 2024-11-26

Related Papers Related Patents Related Grants Related Experts
All trials for Asthma All trials for Allergy All trials of HDM sublingual Immunotherapy All trials of Placebo

-Summary

To establish efficacy and safety of HDM sublingual Immunotherapy (HDM-SLIT) by comparing Odactra and placebo, when given sublingually for 3 years to high risk infants aged between 6 to 12 months at enrollment in preventing the development of asthma, assessed 1.5 years after discontinuation of treatment.

Expand all sections  ·  Collapse all

+Detailed description

Aim to prevent the development of asthma in children by intervening at a time when the developing system in still amenable to immune modulation, by using the only therapy that has proven ability to change the natural history of allergic diseases and induce clinical remission. We hypothesize that three years of HDM Immunotherapy in high-risk infants will prevent the development of asthma assessed over a period of 1.5 years after discontinuation of treatment and HDM immunotherapy will result in (a) a significant reduction in the number and pathogenic features of HDM-reactive TH2 cells, and (b) an increase in the numbers of HDM-reactive TH and TREG cells expressing the interferon-response signature. The study is a Randomized (1:1), double blinded, placebo controlled, parallel arms, multi-site, Phase II study with a 3 year treatment phase and further 1.5 year follow-up phase. The study duration for each participant is 4.5 years. Overall study duration is 84 months (7 years); which include 9 months preparation and regulatory approvals, 15 months accrual, 36 months treatment and 18 months follow-up observation period.

+Arms and interventions

ArmTypeInterventionsDescription
Experimental armExperimentalDrug: HDM sublingual ImmunotherapyHDM sublingual Immunotherapy (HDM-SLIT) with Odactra® for 3 years to high-risk infants aged between 6 to 12 months at enrollment in preventing the development of asthma, assessed 1.5 years after discontinuation of treatment.
Placebo armPlacebo comparatorDrug: PlaceboPlacebo administered sublingually for 3 years to high-risk infants aged between 6 to 12 months with outcome of asthma development assessed 1.5 years after discontinuation of treatment.
  • HDM sublingual Immunotherapy (Drug), also known as dust mite sublingual immunotherapy: HDM-SLIT tablet (Odactra®/Acarizax®) is a rapidly dissolving, freeze-dried, oral lyophilizate for oromucosal treatment, which contains a 1:1 mixture of two allergen extracts derived for the cultivated house dust mites, D. pteronyssinus and D. farinae. These species are included in SLIT tablet and subcutaneous immunotherapy administered for the treatment of allergic rhinitis and asthma in the pediatric and adult populations. The tablet dissolves within seconds after contact with a wet surface such as the oral mucosa. Participants will be administered the drug sublingually for 3 years.
  • Placebo (Drug), also known as placebo dust mite sublingual immunotherapy: Placebo sublingual therapy

+Outcome measures

Primary outcomes

  • Number of Participants with Asthma [1.5 years after discontinuation of 3 years of treatment]: asthma diagnosis

+Eligibility

Sex: All, ages: 6 Months to 12 Months, accepts healthy volunteers

Inclusion Criteria:

1. Aged 6 to 12 months of age
2. history of physician diagnosed atopic dermatitis OR
3. allergen sensitization OR
4. family history of asthma or allergy

Exclusion Criteria:

1. Evidence of sensitization to house dust mite (SPT ≥3 mm OR sIgE (> 0.35 kU/L)
2. Prematurity (<37 weeks)
3. Failure to thrive
4. Need for oxygen for more than 5 days in the neonatal period
5. history of intubation or mechanical ventilation

+Investigators