ArticleImmunity, inflammation and disease2021
Time-related variation in IgG subclass concentrations in a group of healthy Danish adults.
Article in Immunity, inflammation and disease, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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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.
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Who cites it
5 citing papers in PubMed, 8 citations in OpenAlex.
- Clinical impact of chronic pulmonary aspergillosis in patients with pulmonary nontuberculous mycobacterial disease and colonization: a multicentre prospective cohort study.Annals of medicine · 2026Article
- Immunoglobulin sub-class levels define inter-donor plasma variability: a longitudinal dual-lab study.Molecular systems biology · 2026Article
- Reply to ChenAmerican journal of respiratory and critical care medicine · 2025Article
- Toxin exposure and HLA alleles determine serum antibody binding to toxic shock syndrome toxin 1 (TSST-1) ofFrontiers in immunology · 2023Article
- Time-related variation in IgG subclass concentrations in a group of healthy Danish adults.Immunity, inflammation and disease · 2021Article
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
Abstract
introductionImmunoglobulin G subclass measurements are important for the diagnostic work-up of immunodeficiencies and immunoglobulin G4 (IgG4) related diseases. It is currently unknown whether a single sampling is truly representative for an individual's IgG subclass concentrations. This study aimed to investigate whether IgG and IgG subclass concentrations in healthy individuals are stable over time.
methodWith a span of median 42 weeks, four samples from each of 54 (34M, 20F) healthy adult volunteers (24-66 years) were analyzed for IgG and IgG1-4 using turbidimetry. Concentrations were compared within and between individuals.
resultsIgG and IgG subclass concentrations followed either a normal (IgG, IgG1, and IgG3) or log normal (IgG2 and IgG4) distribution. Immunoglobulin 4 demonstrated by far the widest range of concentrations between individuals (670-fold: 0.004-2.68 g/L). Immunoglobulin G subclass variations within individuals were expressed as pooled standard deviations (PSD). These ranged from 0.056 (IgG4) to 0.955 g/L (IgG) and correlated with mean concentration of IgG or the particular IgG subclass. As a consequence, the relative PSDs (i.e., PSD divided by mean IgG or IgG subclass concentration) fell within a narrow range: 5.82%-10.1%. Based on these numbers, the 95%-upper one-sided confidence limits for intraindividual IgG and IgG subclass variation was calculated to range from 9.82% (IgG2) to 16.9% (IgG4).
conclusionThe study documents that IgG or IgG subclass concentrations within healthy individuals are very stable over at least 42 weeks. The expected variation for IgG4 concentrations at a 95% confidence level does not exceed ±16.9%.
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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.