ReviewThe Journal of allergy and clinical immunology2019
Paucigranulocytic asthma: Uncoupling of airway obstruction from inflammation.
Review in The Journal of allergy and clinical immunology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 84 papers, 1 of them a synthesis that pooled 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.
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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
84 citing papers in PubMed, 1 synthesis or guideline pooled it, 146 citations in OpenAlex.
- Phagocytic aberrations in macrophages in asthma: a mechanistic systematic review integratingFrontiers in immunology · 2026Pooled it
- Different Inflammatory Phenotypes and Immune Endotypes Drive Disease Heterogeneity in Asthma and COPD.Clinical reviews in allergy & immunology · 2026Review
- Clinical and Inflammatory Phenotypes During Exacerbations Predict In-Hospital Adverse Outcomes in Asthma-COPD Overlap.Respirology (Carlton, Vic.) · 2026Article
- Reframing paucigranulocytic asthma through genetic endotyping: a hypothesis-generating focus on the 17q21 rs7216389 locus.Current opinion in allergy and clinical immunology · 2026Review
- Paucigranulocytic Asthma in Aspirin-Hypersensitive Patients: Pleiotropic Regulation of Type 2 Biomarkers.Clinical and translational allergy · 2026Article
- From gut microbiota dysbiosis to immune dysregulation: pathogenic mechanisms and emerging therapeutic perspectives in pediatric asthma.Frontiers in immunology · 2026Review
- Immunological phenotype in asthma and its impact on long-term renal outcomes.Scientific reports · 2025Article
- Single-Cell RNA Sequencing Identifies a Unique Macrophage Population in a Mouse Model of Ozone-induced Asthma Exacerbation.American journal of respiratory cell and molecular biology · 2025Article
- Asthma Phenotypes and Biomarkers.Respiratory care · 2025Review
- CCR3 deficiency shifts adaptive to innate-driven immunity in asthma.The journal of allergy and clinical immunology. Global · 2025Article
- Connecting the Dots: How MicroRNAs Link Asthma and Atherosclerosis.International journal of molecular sciences · 2025Review
- Younger severe asthma patients with interleukin 4 (CC variant) and dupilumab treatment are more likely to achieve clinical remission.BMC pulmonary medicine · 2025Article
- Integrative Roles of Pro-Inflammatory Cytokines on Airway Smooth Muscle Structure and Function in Asthma.Immunological reviews · 2025Review
- Cough-Variant Asthma: A Review of Clinical Characteristics, Diagnosis, and Pathophysiology.The journal of allergy and clinical immunology. In practice · 2025Review
- Research on the regulation of gut microbiota homeostasis and immune function in asthmatic mice by Huanglong Zhixiao Formula.Frontiers in microbiology · 2025Article
- New insights into mesenchymal stem cells in inflammatory subtypes of asthma.Frontiers in immunology · 2025Review
- Relationship between pediatric asthma and respiratory microbiota, intestinal microbiota: a narrative review.Frontiers in microbiology · 2025Review
- Peroxisome Metabolism Pathway and EHHADH Expression are Downregulated in Macrophages in Neutrophilic Asthma.Allergy, asthma & immunology research · 2025Article
- Investigating the Correlation between Handedness and Emotion Regulation Strategies in Asthma and Allergy Patients.Iranian journal of public health · 2024Article
- Gut-lung axis and asthma: A historical review on mechanism and future perspective.Clinical and translational allergy · 2024Review
24 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
2 authors at 1 institution in 1 country.
Funding
Abstract
Among patients with asthma, heterogeneity exists regarding the pattern of airway inflammation and response to treatment, prompting the necessity of recognizing specific phenotypes. Based on the analysis of inflammatory cell counts in induced sputum, asthmatic patients can be classified into 4 unique phenotypes: eosinophilic asthma, neutrophilic asthma, mixed granulocytic asthma, and paucigranulocytic asthma (PGA). PGA is an asthma phenotype with no evidence of increased numbers of eosinophils or neutrophils in sputum or blood and in which anti-inflammatory therapies are ineffective at controlling symptoms. Although underinvestigated, PGA is the most common asthma phenotype in patients with stable asthma. However, PGA is sometimes underestimated because of the exclusive reliance on induced sputum cell counts, which are variable among cohorts of studies, prompting the necessity of developing improved biomarkers. Importantly, investigators have reported that inhaled corticosteroids had a limited effect on airway inflammatory markers in patients with PGA and therefore defining PGA as a potentially "steroid-insensitive" phenotype that requires exploration of alternative therapies. PGA manifests as an uncoupling of airway obstruction from airway inflammation that can be driven by structural changes within the airways, such as airway smooth muscle tissue hypertrophy. Animal models provide evidence that processes evoking airway hyperresponsiveness and airway smooth muscle thickening occur independent from inflammation and might be a consequence of a loss of negative homeostatic processes. Collectively, further understanding of PGA with a focus on the characterization, prevalence, clinical significance, and pathobiology derived from animal studies will likely provide precision therapies that will improve PGA clinical outcomes.
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What OpenQuestion holds
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.