A Study in Children and Adolescents With Birch Pollen-induced Rhinoconjunctivitis
TreeTop
Efficacy and Safety of the SQ Tree Sublingual Immunotherapy Tablet in Children and Adolescents With Moderate to Severe Allergic Rhinitis and/or Conjunctivitis Induced by Pollen From Birch and Trees Belonging to the Birch Homologous Group
2 other identifiers
interventional
952
11 countries
80
Brief Summary
This is a clinical study in children and adolescents (5-17 years) with allergy to pollen from birch (or related trees). It compares the tree SLIT-tablet with placebo in relieving rhinoconjunctivitis symptoms during the birch/tree pollen season based on the average allergic rhinoconjunctivitis daily total combined score. The study will also collect health-related quality of life information in the groups treated with the tree SLIT-tablet or with placebo during the pollen season. The trial medication used is already approved to treat allergic rhinitis caused by birch/tree pollen in adults in several countries?.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for phase_3
Started Apr 2021
80 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
March 24, 2021
CompletedStudy Start
First participant enrolled
April 7, 2021
CompletedFirst Posted
Study publicly available on registry
May 7, 2021
CompletedPrimary Completion
Last participant's last visit for primary outcome
July 31, 2023
CompletedStudy Completion
Last participant's last visit for all outcomes
July 31, 2023
CompletedResults Posted
Study results publicly available
January 22, 2025
CompletedJanuary 22, 2025
January 1, 2025
2.3 years
March 24, 2021
May 28, 2024
January 20, 2025
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Average Total Combined Score (TCS) During the Birch Pollen Season (BPS)
The primary endpoint of the trial was the average allergic rhinitis and/or conjunctivitis TCS during the BPS. The average TCS evaluates the treatment effect based on reduction in daily rhinoconjunctivitis symptoms and medication use (on a scale of 0-38). Higher scores indicate more severe symptoms and/or more medication use. The endpoint is calculated as the average score of all reported daily values during the BPS. The primary estimand for the endpoint was the trial product estimand. The trial product estimand assesses the anticipated effect of the tree SLIT-tablet if it is taken as instructed.
During the BPS (mean duration of approximately 3-4 weeks)
Secondary Outcomes (32)
Average Total Combined Score (TCS) During the Tree Pollen Season (TPS)
During the TPS (mean duration of approximately 11 weeks)
Average Daily Symptoms Score (DSS) During the Birch Pollen Season (BPS)
During the BPS (mean duration of approximately 3-4 weeks)
Average Daily Symptoms Score (DSS) During the Tree Pollen Season (TPS)
During the TPS (mean duration of approximately 11 weeks).
Average Daily Medication Score (DMS) During the Birch Pollen Season (BPS)
During the BPS (mean duration of approximately 3-4 weeks)
Average Daily Medication Score (DMS) During the Tree Pollen Season (TPS)
During the TPS (mean duration of approximately 11 weeks)
- +27 more secondary outcomes
Study Arms (2)
Placebo
PLACEBO COMPARATORGelatine (fish source), mannitol and sodium hydroxide
Intervention/treatment
EXPERIMENTALSublingual allergy immunotherapy tablet, for daily administration SQ tree SLIT-tablet
Interventions
Eligibility Criteria
You may qualify if:
- Male or female of any race/ethnicity aged ≥4 to \<18 years on the day informed consent is obtained from the parent/caregiver; the subject must be ≥5 to \<18 years old at the randomisation visit
- A documented , physician diagnosed, clinically relevant history of moderate to severe AR/C induced by birch pollen (with or without asthma) despite having received treatment with symptom-relieving medication during at least 1 previous tree pollen season for ages 4 through 6 years at screening or at least 2 previous tree pollen seasons for ages 7 through 17 years at screening
- Positive skin prick test (SPT) to Betula verrucosa at screening
- Positive specific IgE to Bet v at screening
- Presence of 1 or more of the following Allergic Rhinitis Impact on Asthma (ARIA) quality of life items due to AR/C during the previous BPS:
- Sleep disturbance
- Impairment of daily activities, leisure and/or sport
- Impairment of school or work
- Troublesome symptoms
You may not qualify if:
- A clinically relevant history of symptomatic seasonal AR/C caused by an allergen source, other than tree pollen from the birch homologous group, with a season overlapping the TPS
- A clinically relevant history of symptomatic perennial AR/C caused by an allergen source such as animal hair and dander to which the subject is exposed during the TPS
- Any clinical deterioration of asthma (i.e. asthma exacerbation) that resulted in emergency treatment, hospitalisation or treatment with systemic corticosteroids within 3 months prior to randomisation
- Reduced lung function at randomisation defined as forced expiratory volume in 1 second (FEV1) \<70% of predicted value. For subjects with asthma, this is assessed on subject's usual asthma medication following at least a 6-hour wash-out of SABA. This criterion does not need to be fulfilled if the subject is \<7 years old, cannot perform reproducible FEV1 manoeuvres despite coaching and is not considered as having a diagnosis of asthma
- Ongoing treatment with any allergy immunotherapy product
- Severe chronic oral inflammation
- A diagnosis of eosinophilic oesophagitis
- A relevant history of systemic allergic reaction e.g. anaphylaxis with cardiorespiratory symptoms, generalised urticaria or severe facial angioedema that in the opinion of the investigator may constitute an increased safety concern
- Immunosuppressive treatment (ATC code L04 or L01) within 3 months prior to the screening visit
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- ALK-Abelló A/Slead
- Parexelcollaborator
Study Sites (80)
Allergy Center Vienna West
Vienna, 1150, Austria
Medical University of Vienna
Vienna, A-1090, Austria
Practice Dr Jean-Benoit Martinot
Erpent, Namur, 5101, Belgium
Universitair Ziekenhuis Gent
Ghent, Oost-Vlandeeren, 9000, Belgium
UZ Leuven
Leuven, Vlaams Brabant, 3000, Belgium
CHU Sainte-Justine
Montreal, Quebec, H3T 1C5, Canada
Clinique specialisee en allergie de la capitale
Québec, G1V 4W2, Canada
Aarhus Universitetshospital, Astma, Allergi- og Lungeklinikken for Born
Aarhus, 8200, Denmark
Astma, Allergi- og Lungeklinik
Copenhagen, 1364, Denmark
Gentofte Hospital Allergy Clinic
Hellerup, 2900, Denmark
Kinder- u. Jugendmedizin
Heidelberg, Baden-Wurttemberg, 69126, Germany
Gemeinschaftspraxis für Kinder und Jugendmedizin
Mannheim, Baden-Wurttemberg, 68161, Germany
Klinikum rechts der Isar der TUM
Munich, Bavaria, 80802, Germany
Universitätsklinikum Gießen und Marburg GmbH - Klinik für Hals-, Nasen- und Ohrenheilkunde Sektion Rhinologie und Allergologie
Marburg, Hesse, 35043, Germany
KliFOs - Klinische Forschung Osnabrück
Osnabrück, Lower Saxony, 49074, Germany
Evangelisches Krankenhaus Düsseldorf - Klinik für Kinder- und Jugendmedizin
Düsseldorf, North Rhine-Westphalia, 40217, Germany
ENT Research GmbH
Essen, North Rhine-Westphalia, 15355, Germany
Kinder- und Jugendärzte
Hürth, North Rhine-Westphalia, 50354, Germany
Universitätsklinikum Münster
Münster, North Rhine-Westphalia, 48149, Germany
Praxis Dr.J. Funck
Neuss, North Rhine-Westphalia, 41469, Germany
Praxis Dr. med. Karsten Jünger
Herxheim, Rhineland-Palatinate, 76863, Germany
Universitätsmedizin der JGU
Mainz, Rhineland-Palatinate, 55131, Germany
Kinderarztpraxis Dr. med. Siegfried Simmet und Simon Traub
Schweigen-Rechtenbach, Rhineland-Palatinate, 76889, Germany
Praxis Dr. Yury Yarin
Dresden, Saxony, 01139, Germany
HNO Praxis Dr. Uta Thieme
Duisburg, 40225, Germany
Hautarztpraxis Dr. med. Daniela Kasche
Hamburg, 22549, Germany
HNO-Praxis am Neckar
Heidelberg, 69120, Germany
Aranyklinika Kft
Szeged, Csongrád megye, 6720, Hungary
Svábhegy Plusz Kft
Budapest, 1037, Hungary
Semmelweis Egyetem
Budapest, 1083, Hungary
Heim Pál Gyermekkórház
Budapest, 1089, Hungary
Kispesti Egeszsegugyi Intezet
Budapest, 1195, Hungary
JSC Ausros Medicinos Centras
Kaunas, Kaunas County, 49387, Lithuania
"CD8 Klinika" JSC
Kaunas, Kaunas County, LT-44269, Lithuania
"Medicum centrum" JSC
Tauragė, Tauragė County, LT-72250, Lithuania
"Seimos gydytojas" JSC
Vilnius, Vilnius County, LT-01118, Lithuania
"Inlita" JSC Santara CTC
Vilnius, Vilnius County, LT-08406, Lithuania
Allergy clinic "Perspektyvos" JSC
Vilnius, Vilnius County, LT-08465, Lithuania
Hospital of University of Health Sciences Kauno Klinikos
Kaunas, LT-50161, Lithuania
Alerginiu susirgimu diagnostikos ir gydymo centras
Vilnius, 8109, Lithuania
"Center of Innovative Allergology" JSC
Vilnius, LT-06256, Lithuania
Medisch Spectrum Twente
Enschede, Overijssel, 7500KA, Netherlands
Erasmus MC - Sophia Childrens Hospital
Rotterdam, South Holland, 3015 CN, Netherlands
Centrum Medyczne PRATIA Bydgoszcz
Bydgoszcz, Kuyavian-Pomeranian Voivodeship, 85-796, Poland
Centrum Medyczne ALL-MED
Krakow, Lesser Poland Voivodeship, 30-033, Poland
Centrum Medyczne PROMED
Krakow, Lesser Poland Voivodeship, 31-411, Poland
Malopolskie Centrum Alergologii
Krakow, Lesser Poland Voivodeship, 31-411, Poland
ALERGO-MED Spolka z o.o.
Tarnów, Lesser Poland Voivodeship, 33-100, Poland
Centrum Alergologii Specjalistyczna Przychodnia Alergologiczna
Lublin, Lublin Voivodeship, 20-552, Poland
NZOZ E-Vita
Bialystok, Podlaskie Voivodeship, 15-879, Poland
Specjalist. Praktyka Lek. dr n.med. Joanna Orlicz-Widawska
Katowice, Silesian Voivodeship, 40-338, Poland
Niepubliczny Zaklad Opieki Zdrowotnej "ALERGOLOGIA", Poradnia Alergologiczna
Szczecin, West Pomeranian Voivodeship, 70-382, Poland
Centrum Medyczne Pratia Czestochowa
Częstochowa, 42-200, Poland
Indywidualna Specjalistyczna Praktyka Lekarska lek. med. Elzbieta Matusz
Gryfice, 72-300, Poland
ETG Kielce
Kielce, 25-355, Poland
Centrum Medyczne Plejady
Krakow, 30-363, Poland
SPZOZ Uniwersytecki Szpital Kliniczny nr 1 im. N.Barlickiego
Lodz, 90-141, Poland
WWCOiT im. M. Kopernika w Lodzi, Osrodek Pediatryczny im. dr J.Korczaka
Lodz, 90-329, Poland
Centrum Alergologii Prof. K. Buczyłko Spółka z o.o.
Lodz, 90-553, Poland
Alergotest s.c. Specjalistyczne Centrum Medyczne
Lublin, 20-095, Poland
Gabinet Lekarski Pediatryczno-Alergologiczny Zenon Bukowczan
Sucha Beskidzka, 34-200, Poland
"All-Med" Specjalistyczna Opieka Medyczna
Wroclaw, 53-201, Poland
Michal Bogacki DOBROSTAN
Wroclaw, 53-201, Poland
Michal Bogacki DOBROSTAN
Wroclaw, 53-301, Poland
Niepubliczny Zaklad Opieki Zdrowotnej Centrum Uslug Medycznych "PROXIMUM" Sp. z o.o.
Wroclaw, 53-428, Poland
ETG Skierniewice
Skierniewice, Łódź Voivodeship, 96-100, Poland
NSZOZ Puls - Med Anna Bogusz, Agnieszka Musielak Sp.J.
Skarżysko-Kamienna, Świętokrzyskie Voivodeship, 26-110, Poland
LLC "Olla-Med"
Moscow, Moscow, 105554, Russia
NRPC Pediatric Hematology, Oncology, Immunology n.a. Dmitriya Rogacheva - Multispecialty
Moscow, Moscow, 117198, Russia
FGBU "Scientific center of children health" of RAMS
Moscow, Moscow, 119333, Russia
Public Enterprise State Scient
Moscow, 115478, Russia
FGBUN" Federal Research Center for Nutrition and Biotechnology "
Moskva, 115446, Russia
ALERGO H2B s.r.o.
Komárno, Nitra Region, 945 01, Slovakia
DANIMED, spol. s.r.o.
Levice, 935-31, Slovakia
Univerzitna Nemocnica Martin
Martin, 03601, Slovakia
MedKol, s.r.o.
Nové Zámky, 940 01, Slovakia
EMED s.r.o.
Prešov, 080 01, Slovakia
Zoll-Med s.r.o., Ambulancia klinickej imunologie a alergologie
Rimavská Sobota, 979 01, Slovakia
Ambulancia klinickej imunologie a alergologie
Šurany, 942 01, Slovakia
SIMIDA s.r.o.
Vráble, 952 01, Slovakia
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Results Point of Contact
- Title
- Senior Director, Clinical Data Science
- Organization
- ALK-Abelló A/S
Study Officials
- PRINCIPAL INVESTIGATOR
Monika Gappa, Prof. MD
Evangelisches Krankenhaus Düsseldorf
Publication Agreements
- PI is Sponsor Employee
- No
- Restriction Type
- OTHER
- Restrictive Agreement
- Yes
Study Design
- Study Type
- interventional
- Phase
- phase 3
- Allocation
- RANDOMIZED
- Masking
- QUADRUPLE
- Who Masked
- PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
March 24, 2021
First Posted
May 7, 2021
Study Start
April 7, 2021
Primary Completion
July 31, 2023
Study Completion
July 31, 2023
Last Updated
January 22, 2025
Results First Posted
January 22, 2025
Record last verified: 2025-01