Revaccination With Pollinex® Quattro

Study Overview
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Brief Summary
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The purpose of this non interventional study (NIS) was to observe the efficacy of Pollinex® Quattro as a short-term revaccination in patients who have already been successfully desensitized at least five years ago against grass-pollen but developed a recurrent allergy.

Detailed Description
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The increasing prevalence of allergies represents a major problem for the health care system. Approximately 500 million people are suffering worldwide from allergic rhinitis (AR). Allergic rhinitis is a Type 1 hypersensitive disorder, initiated by IgE antibodies. Whereas seasonal allergic rhinitis (SAR) is caused by different allergens found outdoors such as grass, tree and weed pollen, perennial allergic rhinitis (PAR) is caused by allergens that are mainly found indoors such as dust mites, mould or animal hair. Specific immunotherapy (SIT) presently constitutes the only causal therapy available and is common practice. SIT is indicated in cases of IgE-mediated allergic diseases and includes two forms of treatment options: subcutaneous (SCIT) and sublingual immunotherapy (SLIT). Both therapies aim to train the immune system not react to supposed pathological allergens, but instead to develop tolerance to them. Even though allergy vaccinations have been applied for a century, the commonly used SCIT requires up to 90 injections over three to five years. Pollinex® Quattro is currently the only ultra-short term medicinal product which requires only four preseasonal injections. The immunological effect associated with Pollinex® Quattro shows an increase of allergen-specific IgG antibodies and a decrease of allergen-specific IgE antibodies as well as a shift from a Th2 to a more Th1 type-immune reaction. Previous studies on the therapeutic efficacy of Pollinex® Quattro have come to a positive conclusion in regards to tolerability and decrease of allergic symptoms. As an ultra-short course SCIT, Pollinex® Quattro might decrease the number of noncompliance and withdrawal for revaccination in patients that have already undergone an intensive immunisation therapy. In this non-interventional study, patients who were treated with Pollinex® Quattro and patients who decided to use anti-allergic drugs for the treatment of their grass pollen allergy were compared due to their allergic symptoms in the grass pollen season from May to July. For this purpose, the rhinoconjunctivitis and asthmatic symptoms as well as the use of concomitant medication were documented in a dia

Official Title
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Non-interventional Study A Multicentre Observational Study for Revaccination With Pollinex® Quattro in Patients With a Recurrent Grass Pollen Allergy

Conditions
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Allergic Rhinitis

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Adults and children from the age of 12 years on, who are diagnosed with recurrent seasonal allergic rhinitis (SAR) caused by grass pollen. A previous specific immunotherapy finished at least five years ago had to be successful. Exclusion Criteria: Contraindications according to the patient information leaflet

Ages Eligible for Study
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Minimum Age: 12 Years
Maximum Age: 75 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Group 1: Pollinex® Quattro Patients<br>Patients treated with Pollinex® Quattro | |
| Group 2: Control Patients<br>Patients who decided to use only anti-allergic drugs during the grass pollen season | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Assessment of the efficacy of Pollinex® Quattro based on the Combined Symptom and Medication Score (CSMS) (Pfaar et al., 2014). | The CSMS consists of the six individual rhinoconjunctivitis scores for sneezing, rhinorrhoea, nasal pruritus, nasal congestion, ocular pruritus and watery eyes, the asthma scores for cough, breathlessness, wheeze and tightness in the chest as well as the score for the use of concomitant medication (oral antihistamines, nasal corticosteroids, oral corticosteroids, asthma inhalation spray). The symptoms and the use of drugs were documented in a diary: The symptom score was: 0=none, 1=mild, 2=moderate, 3=severe. Evaluation will be done for the peak of the grass pollen season, defined by those 30 consecutive days per center with the highest local grass pollen counts (according to Deutscher Wetterdienst Medizin-Meteorologie, http://www.dwd.de) measured in the nearest pollen count station in that region. | 3 months | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Recurrent Grass Pollen Allergy, Pollinex® Quattro