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A randomised, parallel-group, double-blind, placebo-controlled Phase III trial assessing the efficacy and safety of ALK Grass Tablet Phleum pratense in subjects with seasonal grass pollen induced rhinoconjunctivitis - GT-08

A randomised, parallel-group, double-blind, placebo-controlled Phase III trial assessing the efficacy and safety of ALK Grass Tablet Phleum pratense in subjects with seasonal grass pollen induced rhinoconjunctivitis - GT-08

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2004-000083-27-SE
Enrollment
600
Registered
2004-07-27
Start date
2004-09-19
Completion date
Unknown
Last updated
2012-04-18

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Rhinoconjunctivitis

Interventions

Product Name: ALK Grass Tablet Phleum Pratense Pharmaceutical Form: Orodispersible tablet Other descriptive name: An allergen extract of Phleum pratense Concentration type: equal Concentration number:

Sponsors

ALK-Abelló A/S
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: • Male and female 18-65 years of age who have given informed consent, with the following selection criteria: • Written informed consent obtained before entering the trial • A clinical history of grass pollen induced allergic rhinoconjunctivitis of two years or more requiring treatment during the grass pollen season • A clinical history of severe rhinoconjunctivitis symptoms (interfering with usual daily activities or sleep), which remain troublesome despite treatment with antiallergic drugs during the grass pollen season • Positive Skin Prick Test (SPT) response (wheal diameter = 3 mm) to Phleum pratense • Positive specific IgE against Phleum pratense (= IgE Class 2) • Physical examination with no clinically relevant findings • If pre-menopausal female of childbearing potential, the subject must test negative on standard urine pregnancy test and must be willing to practice appropriate contraceptive methods for the duration of the trial • Willingness to comply with this protocol Adequate contraception methods include: male sterilisation by vasectomy for at least 6 months; condom + spermicide; diaphragm + spermicide; intra-uterine contraceptive device placed at least 4 weeks prior to trial drug administration); oral contraceptives (starting at least 4 weeks prior to trial drug administration); implant (e.g. Norplant - starting at least 4weeks prior to trial drug administration); depot injection of a progestogen drug (e.g. Depo-Provera - starting at least 4 weeks prior to trial drug administration) Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range F.1.3 Elderly (>=65 years) F.1.3.1 Number of subjects for this age range

Exclusion criteria

Exclusion criteria: • FEV1 < 70% of predicted value • A clinical history of symptomatic seasonal allergic rhinitis and/or asthma due to tree pollen or weed pollen adjacent to the start of – and potentially overlapping - the grass pollen season • A clinical history of significant symptomatic perennial allergic rhinitis and/or asthma caused by an allergen to which the subject is regularly exposed • A clinical history of significant recurrent acute sinusitis (defined as 2 episodes per year for the last two years all of which required antibiotic treatment) or chronic sinusitis • At randomisation, current symptoms of, or treatment for, upper respiratory tract infection, acute sinusitis, acute otitis media or other relevant infectious process (serous otitis media is not an exclusion criterion) • History of emergency visit or admission for asthma in the previous 12 months • Use of an investigational drug within 30 days prior to screening • Previous treatment by immunotherapy with grass pollen allergen or any other allergen within the previous 5 years • History of anaphylaxis, including anaphylactic food allergy, bee venom anaphylaxis, exercise anaphylaxis or drug induced anaphylaxis • History of angioedema • Any of the following underlying conditions known or suspected to be present: Cystic fibrosis, malignancy, insulin-dependent diabetes, malabsorption or malnutrition, renal or hepatic insufficiency, chronic infection, drug dependency or alcoholism ischemic heart disease or angina requiring current daily medication or with any evidence of disease making implementation of the protocol or interpretation of the protocol results difficult or jeopardising the safety of the subject (e.g. clinically significant cardiovascular, serious immunopathologic, immunodeficiency whether acquired or not, hepatic, neurologic, psychiatric, endocrine, or other major systemic disease) • Immunosuppressive treatment • History of hypersensitivity to the excipients of the trial medications • History of allergy, hypersensitivity or intolerance to trial medications or rescue medications • A mental condition rendering the subject unable to understand the nature, scope and possible consequences of the trial, and/or evidence of an uncooperative attitude • Unlikely to be able to complete the trial, for any reason, or likely to travel for extended periods of time during the grass pollen season

Design outcomes

Primary

MeasureTime frame
Main Objective: To evaluate the efficacy of specific immunotherapy with the 75,000 SQ-T ALK Grass tablet compared to placebo in subjects with grass pollen induced rhinoconjunctivitis, based on the rhinoconjunctivitis symptom score as well as the rhinoconjunctivitis medication score during the grass pollen season.;Secondary Objective: To evaluate the efficacy of specific immunotherapy with the 75,000 SQ-T ALK Grass tablet compared to placebo in subjects with grass pollen induced rhinoconjunctivitis based on: Rhinoconjunctivitis medication score in the grass pollen season. Rhinoconjunctivitis symptom and medication score in the peak grass pollen season. Rhinoconjunctivitis and asthma symptom score and medication score in the entire and peak grass pollen season. Asthma symptom score and medication score in the entire and peak grass pollen season. Rhinoconjunctivitis by VAS in the grass pollen season and peak grass pollen season. QoL , Pharmacoeconomics and Number of well days in the grass pollen season Global evaluation of rhinoconjunctivitis symptoms. Impact of pre-seasonal treatment on rhinoconjunctivitis symptom and medication score during the entire and peak grass pollen season. Safety and tolerability of the 75,000 SQ-T ALK Grass tablet compared to placebo. ;Primary end point(s): The primary efficacy endpoints are the average rhinoconjunctivitis symptom score as well as the average rhinoconjunctivitis medication score. These two average scores will be calculated for each subject as the sum of the daily score throughout the entire grass pollen season, divided by the duration of the grass pollen season.

Countries

Italy, Spain, Sweden, United Kingdom

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026