Clinical trial to assess the efficacy and safety of a vaccine for grasses and olive tree allergy

Phase 3

Not yet recruiting

• Conditions: Aetiological treatment of moderate-severe intermitent or persistent allergic rhinitis/rhinoconjunctivitis with or without controlled mild-moderate intermittent or persistent allergic asthma

• Registration Number: 2024-514525-34-00
• Lead Sponsor: Inmunotek S.L.

Brief Summary

The main objective of this clinical trial is to evaluate the clinical efficacy of subcutaneously administered polymerized allergen extracts compared to placebo in subjects with rhinitis/rhinoconjunctivitis according to the ARIA classification, with or without controlled intermittent or persistent (mild-moderate) asthma, as defined by GEMA 5.0

Detailed Description

Not available

Study Timeline

• Study First Posted: 2024-08-14
• Last Update Posted: 2024-08-14

Recruitment & Eligibility

• Status: Authorised, recruitment pending
• Sex: Not specified
• Target Recruitment: 180

Inclusion Criteria

1. Subject who has signed the informed consent form.

2. Subjects with negative skin prick test for co-seasonal pollens. In case specific IgE determination has been performed, the result must be < 3.5 kU/L and without relevant clinical signs.

3. Subjects with negative skin prick test to other aeroallergens (mites, fungi, and dander). In case specific IgE determination has been performed, the result must be < 3.5 kU/L and without relevant clinical signs.

4. Subjects of both sexes aged between 12 and 65 years.

5. Subjects with a confirmed clinical history of inhalation allergy (intermittent or persistent moderate-severe rhinitis and/or rhinoconjunctivitis according to the ARIA classification with or without controlled intermittent or persistent mild-moderate asthma according to the GEMA 5.0 classification) caused by grass and olive tree allergy. The asthma diagnosis will be valid from 12 months prior to signing the informed consent.

6. Subjects with a positive skin prick test (wheal major diameter ≥ 5 mm) to a standardized mixed extract of grass pollen (Phleum pratense, Holcus lanatus, Dactylis glomerata, Poa pratensis, Festuca elatior, Lolium perenne), or to one of the components of the mixture and an olive tree extract.

7. Specific IgE (CAP or Immulite) to a grass mixture or to one of the components of the grass mixture, preferably to Phleum pratense and olive tree or to one of the molecular components of the allergenic sources with a value > 3.5 KU/L.

8. Women of childbearing age (from menarche) must present a urine pregnancy test with negative result at the time of entry into the trial.

9. Women of childbearing age participating in the trial must agree to use an appropriate method of contraception. Medically acceptable methods of contraception are intrauterine devices inserted at least 3 months in advance, surgical sterilisation (e.g., tubal ligation), barrier methods, or the use of oral contraceptives.

10. Subjects capable of complying with the dosing regimen.

11. Subjects owning a smartphone to record symptoms and medication.

Exclusion Criteria

1. Subjects with positive skin prick test to other aeroallergens, except for dander with occasional exposure and symptomatology.

2. Subjects with any pathology in which the administration of adrenaline is contraindicated (hyperthyroidism, hypertension, heart disease, etc.).

3. Subjects with any other disease not related to moderate rhinoconjunctivitis or asthma, but of potential severity and that may interfere with treatment and follow-up (epilepsy, psychomotor impairment, uncontrolled diabetes, malformations, multiple surgeries, nephropathy).

4. Subjects with autoimmune disease (thyroiditis, lupus, etc.), tumour diseases or diagnosed with immunodeficiencies.

Subject whose condition prevents him/her from offering cooperation and/or who has severe psychiatric disorders.

14. Subjects with known allergy to components of the investigational medicinal product other than the allergen.

15. Subjects with lower respiratory tract diseases different from asthma such as emphysema or bronchiectasis.

16. Subjects who are immediate family members of investigators.

17. Pregnant or breastfeeding women.

18. Subjects with positive skin prick test to other aeroallergens, except for non-co-seasonal pollens with grasses and olive tree.

19. Subjects who have received immunotherapy to pollens in the last 5 years or are currently receiving immunotherapy with any allergen.

20. Subjects in whom immunotherapy may be subject to absolute general contraindication according to the criteria of the Immunotherapy Committee of the Spanish Society of Allergy and Clinical Immunology and the European Allergy and Clinical Immunology Immunotherapy Subcommittee.

21. Subjects with persistent severe or uncontrolled asthma, with an FEV1 < 70% of baseline despite adequate pharmacological treatment at the time of inclusion in the trial. Also subjects with intermittent or persistent rhinitis/rhinoconjunctivitis with severe symptoms in whom discontinuation of oral or systemic antihistamine treatment is contraindicated.

22. Subjects who have previously presented a severe secondary reaction during diagnostic skin prick test.

23. Subjects on treatment with ß-blockers.

24. Clinically unstable subjects at the time of inclusion in the trial (acute asthma exacerbation, respiratory infection, febrile process, acute urticaria, etc.).

25. Subjects with chronic active urticaria, severe dermographism, severe atopic dermatitis, sunburn, active psoriasis with lesions in areas where skin prick test will be performed, or a history of hereditary angioedema.

Study & Design

• Study Type: Not specified
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Overall symptom and medication score during the grass and olive tree pollen season (April, May, and June)		Overall symptom and medication score during the grass and olive tree pollen season (April, May, and June)

Secondary Outcome Measures

Name	Time	Method
Symptom-free days		Symptom-free days
Medication-free days		Medication-free days
Asthma exacerbations		Asthma exacerbations
Visual Analogue Scale (VAS)		Visual Analogue Scale (VAS)
Immunological parameters: total IgE, specific IgE, specific IgG4		Immunological parameters: total IgE, specific IgE, specific IgG4
Asthma Control Questionnaire (ACQ-6)		Asthma Control Questionnaire (ACQ-6)
Rhinitis quality of life questionnaire (ESPRINT-15)		Rhinitis quality of life questionnaire (ESPRINT-15)
Consumption of health resources		Consumption of health resources
Safety of specific immunotherapy (Overall rate, severity, and ratio of any adverse event (AE) by administration and by subject; Assessment of administration site reactions, systemic reactions and any medication administered for the treatment of AE)		Safety of specific immunotherapy (Overall rate, severity, and ratio of any adverse event (AE) by administration and by subject; Assessment of administration site reactions, systemic reactions and any medication administered for the treatment of AE)

Trial Locations

Locations (24)

Clínica Dermatología y Alergia (Badajoz); 🇪🇸 Badajoz, Spain

Hospital Quironsalud Malaga; 🇪🇸 Malaga, Spain

Hospital Universitari Dexeus Grupo Quironsalud; 🇪🇸 Barcelona, Spain

Hospital Universitario Virgen de la Arrixaca; 🇪🇸 murcia, Spain

Hospital Quironsalud Cordoba; 🇪🇸 Cordoba, Spain

Hospital Universitario Infanta Cristina; 🇪🇸 Parla, Spain

Hospital Universitario Clinico San Cecilio; 🇪🇸 Granada, Spain

Alergologo Clinica Alergias Malaga Dr.Barceló; 🇪🇸 Málaga, Spain

Clínica privada Dr. Antonio Carbonell Martinez; 🇪🇸 Murcia, Spain

Hospital Quirónsalud Clideba; 🇪🇸 Badajoz, Spain

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Clínica Dermatología y Alergia (Badajoz)

🇪🇸Badajoz, Spain

Irán Sánchez

Site contact

+34924220562

iran120@hotmail.com