E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
House Dust Mite Allergic Rhinitis |
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MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 9.1 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10001723 |
E.1.2 | Term | Allergic rhinitis |
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E.1.3 | Condition being studied is a rare disease | No |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
To determine if sublingual tablet of HDM Allergen Extracts administered at a dosage of 300 IR to children and adolescents during approximately 12 months, is significantly better than placebo in relieving house dust mite allergic rhinitis symptoms, as assessed by the magnitude of response observed on the Average Adjusted Symptom Score (AASS). The AASS is a score assessing four rhinitis symptoms: sneezing, rhinorrhoea, nasal pruritis and nasal congestion, adjusted on the rescue medication intake.
Sustained Treatment efficacy objective: To assess the sustained clinical efficacy of 300 IR sublingual tablet of HDM Allergen Extracts on the AASS after two and three treatment years.
Post-treatment long-term efficacy objective: To assess the post treatment long-term efficacy (disease modifying effect) of 300IR sublingual tablet of HDM Allergen Extracts on the AASS after one and two treatment-free years.
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E.2.2 | Secondary objectives of the trial |
To assess clinical efficacy after 1 treatment year & post treatment long-term efficacy of 300IR in rhinitis overall & overtime, assessed on different global or individual scores, improvement in allergic rhinitis life impact, & safety on: o Average Adjusted Symptom Score at different periods o Average Rhinitis Total Symptom Score of 4 rhinitis symptoms o Average Rescue Medication Score (see protocol p26). o Each of 5 individual Average Rhinoconjunctivitis Symptom Scores (see protocol p26). o Onset action of SLIT o Rescue medication usage (see protocol p45). o Average Combined Score – score combining Rhinitis Total Symptom Score & Rescue medication score. o Overall Rhinoconjunctivitis Quality of Life Questionnaire score. o Proportion of symptom-controlled days o Global evaluation of allergic rhinitis by patient o Asthma evaluation (Present / Absent), GINA classification and symptom score o Sensitisation status o Safety of treatment (see protocol p27)
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E.2.3 | Trial contains a sub-study | Yes |
E.2.3.1 | Full title, date and version of each sub-study and their related objectives |
Part of the same protocol. The sub-study will be performed in selected sites.
Exploratory: • Immunological markers (immunoglobulin IgE, IgG4 and IgA) specific for house dust mite allergens. •CD4+ T-cell response: An ancillary study will be conducted in a sub-group of patients to evaluate the effect of 300 IR of sublingual tablet of Allergen Extracts on selected immunological markers from peripheral blood (circulating house dust mite-specific CD4+ T-cell responses) • Nasal provocation test: A sub-study will be conducted in a sub-group of patients to assess the effect of 300 IR sublingual tablets HDM Allergen Extracts on the nasal hyper-reactivity induced by allergen challenge during first year only (namely at visit 2 and Visit 7)
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E.3 | Principal inclusion criteria |
1. Male or female outpatients, aged 5-17 years inclusive 2. History of house dust mite-related allergic rhinitis for at least 1 year requiring regular intake of symptomatic treatment(s) 3. Sensitised to D. pteronyssinus and/or D. farinae (positive skin prick test with wheal diameter greater than 3 mm and a specific IgE level ≥ 0.7 kU/L) 4. Baseline ARTSS ≥ 5 after completion of the 7-day daily record card with at least 4 days of valid data 5. General good condition as determined by past medical history, physical examination and safety laboratory tests 6. Negative urine pregnancy test on all female patients who have had their menarche 7. Patients and/or legal representative who are willing to comply with the protocol 8. Patients and/or legal representative who are able to understand the information given and the text of the consent form, who are able to complete the daily record card and the RQLQ; patients who are able to understand the information of the RQLQ given by the interviewer (applicable only from 6 years on) 9. Patient and/or legal representative having given his signed informed consent. 10. Patient registered with the French Social Security System (for France only)
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E.4 | Principal exclusion criteria |
1. Co-sensitization associated with clinically relevant allergic rhinitis, sinusitis, conjunctivitis or asthma likely to significantly change the symptoms of the patient throughout the study (that means patient symptomatic to another allergen than house dust mites to which the patient will be exposed during the study; i.e. will notably be excluded patients sensitised to cat or dog allergens and regularly exposed to these allergens patients sensitised to aspergillus, cladosporium, alternaria patients sensitised to parietaria , ragweed, or mugwort, if this allergen is endemic to the region 2. Patients with any nasal or oral condition that could confound the efficacy or safety assessments such as nasal polyposis, chronic sinusitis or oral inflammation (for example oral lichen planus, oral ulceration or oral mycosis). 3. Patients with moderate or severe persistent asthma (GINA 3 or 4) 4. Patients with mild persistent asthma (GINA 2) necessitating treatment with inhaled glucocorticosteroids at a daily dose level greater than 400 mcg budesonide dose-equivalents [that is, patients with GINA 1 asthma or asthmatic patients necessitating treatment with inhaled corticosteroids at a daily dose level equal to or less than 400 mcg budesonide dose-equivalents at stable dose in the last 4 weeks may be included in the study] 5. FEV1 < 80% of predicted value at visit V1 6. Any change in environmental measures for allergen avoidance during the study. 7. Patients treated with systemic steroids (whatever the indication) within 4 weeks before visit V1. 8. Patients treated with long acting systemic steroids (whatever the indication) within 12 weeks before visit V1 or between visits V1 and V2. 9. Patients treated with beta-blockers or continuous corticotherapy, other than a daily dose level equal to or less than 400 mcg of inhaled budesonide dose-equivalents for asthmatic patients. 10. Patients treated with antihistamines for any reasons other than house dust mite allergic rhinitis symptoms 11. Patients who received allergen specific immunotherapy for house dust mites in the last 5 years. 12. Ongoing immunotherapy with any allergen. 13. Patients with a past or current disease, which as judged by the investigator, may affect the patient's participation in or the outcome of this study. These diseases include, but are not limited to, cardiovascular disease, malignancy, hepatic disease, renal disease, haematological disease, neurological disease, immunological disease, psychiatric disease, dermatological disease, and endocrine disease. 14. Usual contraindications of immunotherapy such as serious immunopathologic conditions or malignancies. 15. Intolerance to any excipients (more specifically to lactose) 16. Patients with a history of drug or alcohol abuse. 17. Pregnant or breast-feeding women 18. Sexually active female patients of childbearing potential who are not willing to use a medically accepted contraceptive method for the next two years (hormonal birth control [orally, injectable or by implant, for at least 2 months before enrolment], bilateral tubal ligation, monogamous relationship with a vasectomised partner) 19. Patients likely to be non-compliant Patients who have already been included in this study or who are participating in another study 20. Patients having participated in a study with an investigational drug in the 12 weeks preceding V1 21. Children of Investigators, co-investigators and of all the study collaborators should not be enrolled in the study.
Note:Patients with flu or an upper respiratory tract infection must be treated appropriately and can be re-evaluted for enrollment ar visit 2.
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E.5 End points |
E.5.1 | Primary end point(s) |
The primary efficacy criterion is the Average Adjusted Symptom Score (AASS), average of the daily (non-missing) ASS during the period of assessment. AASS theoretically ranges from 0 to 12. |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | Yes |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | No |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | No |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | Yes |
E.8.1.5 | Parallel group | Yes |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | Yes |
E.8.2.3 | Other | No |
E.8.3 |
The trial involves single site in the Member State concerned
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.4.1 | Number of sites anticipated in Member State concerned | 8 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 52 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | Information not present in EudraCT |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
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E.8.7 | Trial has a data monitoring committee | Yes |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 5 |
E.8.9.1 | In the Member State concerned months | 6 |
E.8.9.1 | In the Member State concerned days | 0 |
E.8.9.2 | In all countries concerned by the trial years | 5 |
E.8.9.2 | In all countries concerned by the trial months | 6 |
E.8.9.2 | In all countries concerned by the trial days | 0 |