Trial reportJournal of internal medicine2021
Clinical predictors of donor antibody titre and correlation with recipient antibody response in a COVID-19 convalescent plasma clinical trial.
Trial report in Journal of internal medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 46 papers, 8 of them syntheses that pooled it.
What it found
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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.
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
46 citing papers in PubMed, 8 syntheses or guidelines pooled it, 58 citations in OpenAlex.
- Timing, Titre, and Host Determinants of Convalescent Plasma Efficacy in COVID-19: A Systematic Review With Design-Stratified Narrative Synthesis.Reviews in medical virology · 2026Pooled it
- Convalescent plasma for people with COVID-19: a living systematic review.The Cochrane database of systematic reviews · 2023Pooled it
- Convalescent plasma for people with COVID-19: a living systematic review.The Cochrane database of systematic reviews · 2023Pooled it
- COVID-19 Convalescent Plasma for the Treatment of Immunocompromised Patients: A Systematic Review and Meta-analysis.JAMA network open · 2023Pooled it
- The association of smoking status with SARS-CoV-2 infection, hospitalization and mortality from COVID-19: a living rapid evidence review with Bayesian meta-analyses (version 7).Addiction (Abingdon, England) · 2021Pooled it
- Convalescent plasma or hyperimmune immunoglobulin for people with COVID-19: a living systematic review.The Cochrane database of systematic reviews · 2021Pooled it
- Convalescent plasma may be a possible treatment for COVID-19: A systematic review.International immunopharmacology · 2021Pooled it
- Pooled it
- Trial
- Clinical predictors of donor antibody titre and correlation with recipient antibody response in a COVID-19 convalescent plasma clinical trial.Journal of internal medicine · 2021Trial
- Common cold embecovirus imprinting primes broadly neutralizing antibody responses to SARS-CoV-2 S2.The Journal of experimental medicine · 2025Article
- Article
- Development of a nomogram for high antibody titre of COVID-19 convalescent plasma.Epidemiology and infection · 2024Article
- Detection and comparison of SARS-CoV-2 antibody produced in naturally infected patients and vaccinated individuals in Addis Ababa, Ethiopia: multicenter cross-sectional study.Virology journal · 2024Article
- Assessment of antibody levels to SARS-CoV-2 in patients with idiopathic inflammatory myopathies receiving treatment with intravenous immunoglobulin.Rheumatology international · 2023Article
- Correlation between Clinical Characteristics and Antibody Levels in COVID-19 Convalescent Plasma Donor Candidates.Viruses · 2023Article
- Potent SARS-CoV2-specific T-cell response in asymptomatic hemodialysis patients with hidden COVID-19 infection history.Journal of clinical laboratory analysis · 2023Article
- RBD-Based ELISA and Luminex Predict Anti-SARS-CoV-2 Surrogate-Neutralizing Activity in Two Longitudinal Cohorts of German and Spanish Health Care Workers.Microbiology spectrum · 2023Article
- A pre-vaccine exploratory survey of SARS-CoV-2 humoral immunity among Egyptian general population.Tropical medicine and health · 2022Article
- Analysis of long-term antibody response in COVID-19 patients by symptoms grade, gender, age, BMI, and medication.Journal of medical virology · 2022Article
Corrections and comments
- Erratum issued
Authors and funding
34 authors at 2 institutions in 1 country.
Funding
Abstract
backgroundConvalescent plasma therapy for COVID-19 relies on transfer of anti-viral antibody from donors to recipients via plasma transfusion. The relationship between clinical characteristics and antibody response to COVID-19 is not well defined. We investigated predictors of convalescent antibody production and quantified recipient antibody response in a convalescent plasma therapy clinical trial.
methodsMultivariable analysis of clinical and serological parameters in 103 confirmed COVID-19 convalescent plasma donors 28 days or more following symptom resolution was performed. Mixed-effects regression models with piecewise linear trends were used to characterize serial antibody responses in 10 convalescent plasma recipients with severe COVID-19.
resultsDonor antibody titres ranged from 0 to 1 : 3892 (anti-receptor binding domain (RBD)) and 0 to 1 : 3289 (anti-spike). Higher anti-RBD and anti-spike titres were associated with increased age, hospitalization for COVID-19, fever and absence of myalgia (all P < 0.05). Fatigue was significantly associated with anti-RBD (P = 0.03). In pairwise comparison amongst ABO blood types, AB donors had higher anti-RBD and anti-spike than O donors (P < 0.05). No toxicity was associated with plasma transfusion. Non-ECMO recipient anti-RBD antibody titre increased on average 31% per day during the first three days post-transfusion (P = 0.01) and anti-spike antibody titre by 40.3% (P = 0.02).
conclusionAdvanced age, fever, absence of myalgia, fatigue, blood type and hospitalization were associated with higher convalescent antibody titre to COVID-19. Despite variability in donor titre, 80% of convalescent plasma recipients showed significant increase in antibody levels post-transfusion. A more complete understanding of the dose-response effect of plasma transfusion amongst COVID-19-infected patients is needed.
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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.