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TerminatedNCT04176185QUESTUpdated Jun 30, 2022

A Research Study in Chinese People With Allergy to House Dust Mites, Using an Environmental Exposure Chamber

A Phase 3 interventional study of Sublingual allergy immunological tablet and Placebo in Allergic Rhinoconjunctivitis, sponsored by ALK-Abelló A/S. Terminated at 2 sites in 2 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2022-06-30.

Sponsored by ALK-Abelló A/S · Phase 3, Interventional, and Treatment

Why this study was terminated
COVID-19
Phase
Phase 3
Study type
Interventional
Enrollment
80
Allocation
Randomized
Ages
18 Years and older
Sex
All
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Study summary

This trial evaluates the efficacy and safety of HDM SLIT-tablet in treatment of HDM AR. The efficacy is evaluated using an environmental exposure chamber (EEC). Subjects will be randomised to receive treatment with HDM SLIT-tablet and placebo 1:1.

Read the detailed description

This trial is a 24 weeks, randomised, parallel-group, double-blind, placebo-controlled phase III trial. Approximately 202 subjects will be randomised (1:1) to receive treatment with HDM SLIT-tablet or placebo. The trial will be conducted in China, with subjects recruited and treated in China. Two EEC assessments (baseline and end of treatment) will take place at a validated EEC facility in Austria.

The primary objective is to demonstrate the efficacy of the HDM SLIT-tablet (12 SQ-HDM) once daily compared to placebo in the treatment of HDM AR nasal symptom determined during the EEC session at week 24.

02

Conditions studied

  • Allergic Rhinoconjunctivitis

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Keywords

  • House Dust Mite
  • Allergic rhinitis
  • Allergic conjunctivitis
  • China
  • Environmental exposure chamber
03

In context

Conjunctivitis

361 studies on the registry are indexed under Conjunctivitis; 17 are open to participants now.

This study's enrollment of 80 is below the median of 100 across 299 interventional studies indexed under Conjunctivitis.

Browse Conjunctivitis studies →

Lead sponsor

ALK-Abelló A/S is the lead sponsor of 66 studies on the registry; 2 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Male or female Chinese subjects aged ≥18 years
  • A clinical history of HDM AR/C with or without asthma
  • Positive SPT and IgE to Der p or Der f at screening
  • A TNSS of at least 6 of 12 within the first 2 hours of the screening EEC session prior to randomisation

Exclusion criteria

Exclusion criteria

  • Sensitised and regularly exposed perennial or seasonal allergens
  • Asthma requiring treatment with high-dose ICS
  • Reduced lung function
  • Has a nasal condition that could confound the efficacy or safety assessment
  • A relevant history of systemic allergic reaction
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Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
80 participants (actual)

Study arms

  • Experimental
    Active

    HDM SLIT-tablet once daily for approximately 24 weeks

    Biological: Sublingual allergy immunological tablet

  • Placebo comparator
    Placebo

    Placebo tablet once daily for approximately 24 weeks

    Other: Placebo

Interventions

  • BiologicalSublingual allergy immunological tablet

    For daily administration (1 tablet per day)

    Also known as: 12 SQ HDM SLIT-tablet, Acarizax

  • OtherPlacebo

    For daily administration (1 tablet per day)

    Also known as: Placebo sublingual tablet

06

What researchers measure

Primary outcomes

  1. Total Nasal Symptom Score (TNSS)

    Primary endpoint, average TNSS during the EEC session at week 24, defined as the average of all TNSS observed in the last 4 hours of the EEC session at week 24. Measured on a scale of 0 (no symptoms) to 12 (severe symptoms).

    Time frame: Last 4 hours of the EEC session at week 24

Secondary outcomes

  1. Total Symptom Score (TSS)

    Key secondary endpoint, average TSS during the EEC session at week 24, defined as the sum of the Total Ocular Symptom Score (TOSS) and TNSS observed in the last 4 hours of the EEC session at week 24. Measured on a scale of 0 (no symptoms) to 18 (severe symptoms).

    Time frame: Last 4 hours of the EEC session at week 24

Other outcomes

  1. Frequency of adverse events

    Number of Adverse events per treatment group

    Time frame: 26 weeks

  2. Assessment of lung function

    FEV1

    Time frame: 26 weeks

  3. Total Ocular Symptom Score (TOSS)

    Average TOSS during the EEC session at week 24, defined as the average of all TOSS observed in the last 4 hours of the EEC session at week 24. Measured on a scale of 0 (no symptoms) to 6 (severe symptoms).

    Time frame: Last 4 hours of the EEC session at week 24

  4. Immunology

    Change from baseline in measurements of house-dust-mite-specific IgG \& IgE antibodies

    Time frame: Baseline to 24 weeks

07

Study locations

2 sites
  • Vienna Challenge Chamber
    Vienna, 1150, Austria
  • Tongren Hospital
    Beijing, China
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 30, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04176185
Lead sponsor
ALK-Abelló A/S
Responsible party
Sponsor
First posted
Nov 25, 2019
Start date
Nov 4, 2019
Primary completion
Dec 17, 2019
Completion
Jan 19, 2022
Last update
Jun 30, 2022

Study contacts

Luo Zhang, Prof.
principal investigator · Beijing Tongren Hospital

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is terminated, as verified in Feb 2021. You cannot join it, but the record below documents what was studied.

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