Evidence map›Paper›PMID 34886880›Full record

ArticleAllergy, asthma, and clinical immunology : official journal of the Canadian Society of Allergy and Clinical Immunology2021

Randomized controlled trial of ragweed sublingual immunotherapy tablet in the subpopulation of Canadian children and adolescents with allergic rhinoconjunctivitis.

Anne K Ellis, Remi Gagnon, David I Bernstein, Hendrik Nolte

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in Allergy, asthma, and clinical immunology : official journal of the Canadian Society of Allergy and Clinical Immunology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02478398 (A Phase III, Randomized, Placebo-Controlled Clinical Trial to Study the Efficacy and Safety of MK-3641, a Ragweed), which is not on this map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
0.3field-weighted citation impact, top 45% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT02478398 phase3completednot on this map

A Phase III, Randomized, Placebo-Controlled Clinical Trial to Study the Efficacy and Safety of MK-3641, a Ragweed (Ambrosia Artemisiifolia) Sublingual Immunotherapy Tablet, in Children With a History of Ragweed-Induced Rhinoconjunctivitis With or Without Asthma

TypeinterventionalSponsorMerck Sharp & Dohme LLCRan2015 to 2018Enrolled1,025ConditionsRhinitis, Allergic, SeasonalArmsShort ragweed pollen allergen extract, Placebo, Self-injectable epinephrine, Albuterol/Salbutamol, Loratadine
3 · Its place in the literature

Who cites it

3 citing papers in PubMed, 3 citations in OpenAlex.

  1. Efficacy and safety of the tree sublingual immunotherapy tablet in the subpopulation of Canadian children with allergic rhinitis and/or conjunctivitis: phase III trial results.Allergy, asthma, and clinical immunology : official journal of the Canadian Society of Allergy and Clinical Immunology · 2026
    Article
  2. Asia Pacific allergy · 2025
    Article
  3. [Sensitization characteristics of ragweed pollen in Beijing area].Lin chuang er bi yan hou tou jing wai ke za zhi = Journal of clinical otorhinolaryngology head and neck surgery · 2023
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 2 countries.

Anne K Ellis *Division of Allergy & Immunology, Department of Medicine, Queen's University, Kingston, ON, Canada.
Remi Gagnon *Clinique Spécialisée en Allergie de La Capitale, Québec, QC, Canada.
David I BernsteinDivision of Immunology, Allergy and Rheumatology, University of Cincinnati College of Medicine and Bernstein Clinical Research Center, Cincinnati, OH, USA.
Hendrik NolteALK, Bedminster, NJ, USA. Hendrik.nolte@alk.net.
Bernstein Clinical Research Center · USQueen's University · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPost hoc analyses of randomized placebo-controlled trials have demonstrated efficacy and tolerability of the ragweed sublingual immunotherapy (SLIT)-tablet in Canadian adults with ragweed pollen-induced allergic rhinitis/conjunctivitis (AR/C). This post hoc analysis evaluated the efficacy and tolerability of the ragweed SLIT-tablet in the subpopulation of Canadian children and adolescents with AR/C in a previously described randomized, double-blind, placebo-controlled trial.

methodsThe trial (NCT02478398) was conducted in North American and European children/adolescents ages 5-17 years with ragweed pollen-induced AR/C with or without asthma (FEV

resultsOf the 1025 randomized participants, 246 (SLIT-tablet, n = 116; placebo, n = 130) were in the Canadian subpopulation. In the total study population, relative TCS (95% CI) improvement with ragweed SLIT-tablet versus placebo was - 38.3% (- 46.0%, - 29.7%; least square [LS] mean difference, - 2.73; P < 0.001) during peak RPS. In the Canadian subpopulation, relative TCS improvements with ragweed SLIT-tablet versus placebo were - 40.8% (- 54.5%, - 20.2%; LS mean difference, - 1.59; P = 0.001) during peak RPS and - 36.6% (- 50.2%, - 16.5%; LS mean difference, - 1.36; P = 0.002) during the entire RPS. DSS and DMS during peak RPS in the Canadian subpopulation improved with SLIT-tablet versus placebo by - 30.6% (- 45.2%, - 7.7%; LS mean difference, - 0.94; P = 0.010) and - 77.2% (- 97.5%, - 44.2%; LS mean difference, - 0.66; P = 0.003), respectively. No events of anaphylaxis, airway compromise, intramuscular epinephrine administration, eosinophilic esophagitis, or severe treatment-related systemic allergic reactions were reported in the overall population or Canadian subpopulation.

conclusionEfficacy and safety of the ragweed SLIT-tablet in Canadian children/adolescents with ragweed pollen-induced AR/C was consistent with the total study population. The ragweed SLIT-tablet resulted in clinically meaningful improvement in symptoms, decreased symptom-relieving medication use, and was well tolerated in Canadian children/adolescents.

trial registrationclinicaltrials.gov, NCT02478398. Registered June 23, 2015, https://clinicaltrials.gov/ct2/show/NCT02478398?term=NCT02478398&draw=2&rank=1.

Indexed as

AdolescentsAllergic rhinoconjunctivitisChildrenRagweedSublingual immunotherapy

Identifiers

PMID34886880
PMCPMC8656080
OpenAlexW4200378231

What OpenQuestion holds

Textmetadata
LicenceCC BY
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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.