PURETHAL Birch RUSH Study

HAL Allergie

Status and phase: Completed; Phase 4

Conditions: Allergic Rhinitis; Allergic Rhinoconjunctivitis

Treatments: Biological: PURETHAL Birch, 20.000 AUM/ml

Study type: Interventional

Funder types: Industry

Identifiers

NCT01918956

PB/0040

Details and patient eligibility

About

This study investigates the safety of two up-dosing regimen. The safety of PURETHAL Birch will be evaluated in a rush regimen (maximum dose reached in 3 injections during 3 weeks) compared to the conventional regimen (maximum dose reached in 6 injections during 6 weeks).

The primary endpoint of the sudy is the comparison of the proportions of the patients who have successfully reached the maintenance dose between the two treatment regimes.

A similar previous study with PURETHAL Grasses has shown that the rush up-dosing scheme is as safe as the conventional up-dosing regime. Therefore it is expected that up-dosing with PURETHAL Birch according to the rush regimen is as safe as using the conventional regimen.

Enrollment: 120 estimated patients

Sex: All

Ages: 12+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Signed informed consent.
• Age ≥12 years.
• Allergic rhinitis/rhinoconjunctivitis related to birch pollen with or without concomitant mild to moderate persistent asthma
• FEV1>70% for patients with a history of mild to moderate asthma, FEV1>70% or PEF>80% for patients without a history of asthma
• A positive SPT (mean wheal diameter ≥ 3mm compared to negative control and negative control should be negative) for birch pollen.
• Positive serum specific anti-birch IgE-test (>0.7 U/ml) within 1 year before randomization and/or a positive provocation test for birch pollen within 1 year before randomization.

Exclusion criteria

• Immunotherapy (SCIT or SLIT) with birch pollen allergens within the past 5 years
• Any specific immunotherapy (SCIT or SLIT) during the study period
• Severe immune disorders (including auto-immune diseases) and/or diseases requiring immunosuppressive drugs
• Active malignancies or any malignant disease within the past 5 years
• Severe uncontrolled diseases that could increase the risk for patients participating in the study
• Acute/active inflammation or infection of the target organs at the start of the study
• Secondary changes of the target organ
• Diseases with a contraindication for the use of adrenaline
• Use of systemic steroids within 4 weeks before start of the study and during the study
• Treatment with systemic and local β-blockers
• Vaccination within one week before start of therapy or during the initiation phase
• Anti-IgE therapy within the 6 months prior to inclusion and during the study
• Participation in a clinical study with a new investigational drug within the last 3 months or for a biological within the last 6 months prior to or during the study
• Pregnancy, lactation or inadequate contraceptive measures for women of child-bearing age
• Alcohol, drug or medication abuse within the past year
• Any clinically significant abnormal laboratory parameter at screening
• Lack or expected lack of cooperation or compliance
• Severe psychiatric, psychological, or neurological disorders
• Patients who are employees of the sponsor, institution or 1st grade relatives or partners of the investigator

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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120 participants in 2 patient groups

conventional regimen of PURETHAL Birch

Active Comparator group

Description:

Initial treatment: 6 incremental weekly subcutaneous doses of 0.05, 0.1, 0.2, 0.3, 0.4 and 0.5 ml PURETHAL Birch, 20.000 AUM/ml (week 1, 2, 3, 4, 5, 6). Maintenance treatment: 0.5 ml PURETHAL Birch, 20.000 AUM/ml, in intervals according to registered scheme (week 8, 10, 12).

Treatment:

Biological: PURETHAL Birch, 20.000 AUM/ml

rush regimen of PURETHAL Birch

Experimental group

Description:

Initial treatment: 3 incremental weekly subcutaneous doses of 0.1, 0.3, and 0.5 ml PURETHAL Birch, 20.000 AUM/ml (week 1, 2, 3) Maintenance treatment: 0.5 ml PURETHAL Birch, 20.000 AUM/ml, in 2-weekly intervals (week 5, 7, 9).

Treatment:

Biological: PURETHAL Birch, 20.000 AUM/ml