Trial reportBritish journal of haematology2021
Early mortality benefit with COVID-19 convalescent plasma: a matched control study.
Trial report in British journal of haematology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 3 of them syntheses 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
31 citing papers in PubMed, 3 syntheses or guidelines pooled it.
- Lessons learned from the use of convalescent plasma for the treatment of COVID-19 and specific considerations for immunocompromised patients.Transfusion and apheresis science : official journal of the World Apheresis Association : official journal of the European Society for Haemapheresis · 2022Pooled it
- The efficiency of convalescent plasma in COVID-19 patients: A systematic review and meta-analysis of randomized controlled clinical trials.Frontiers in immunology · 2022Pooled it
- CONVALESCENT plasma for COVID-19: A meta-analysis of clinical trials and real-world evidence.European journal of clinical investigation · 2021Pooled it
- Meplazumab, a CD147 antibody, for severe COVID-19: a double-blind, randomized, placebo-controlled, phase 3 clinical trial.Signal transduction and targeted therapy · 2025Trial
- Serial Convalescent Plasma Infusions for the Initial COVID-19 Infections in the Appalachian Region of West Virginia.Allergy & rhinology (Providence, R.I.)Trial
- Convalescent plasma therapy and long-term SARS-COV-2 antiviral immune response in a prospective cohort of patients with COVID-19.Current research in microbial sciences · 2025Article
- Passive antibody therapy in emerging infectious diseases.Frontiers of medicine · 2023Review
- Rates Among Hospitalized Patients With COVID-19 Treated With Convalescent Plasma: A Systematic Review and Meta-Analysis.Mayo Clinic proceedings. Innovations, quality & outcomes · 2023Article
- Severe COVID-19: Drugs and Clinical Trials.Journal of clinical medicine · 2023Review
- Effects of convalescent plasma infusion on the ADAMTS13-von Willebrand factor axis and endothelial integrity in patients with severe and critical COVID-19.Research and practice in thrombosis and haemostasis · 2023Article
- Effectiveness of COVID-19 Convalescent Plasma (CCP) During the Pandemic Era: A Literature Review.Journal of blood medicine · 2023Review
- Lack of efficacy of convalescent plasma in COVID-19 patients with concomitant hematological malignancies: An Italian retrospective study.Hematological oncology · 2022Article
- COVID-19 Convalescent Plasma and Clinical Trials: Understanding Conflicting Outcomes.Clinical microbiology reviews · 2022Review
- A Multicenter, Prospective, Observational, Cohort-Controlled Study of Clinical Outcomes Following Coronavirus Disease 2019 (COVID-19) Convalescent Plasma Therapy in Hospitalized Patients With COVID-19.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2022Observational
- Early administration of COVID-19 convalescent plasma with high titer antibody content by live viral neutralization assay is associated with modest clinical efficacy.American journal of hematology · 2022Article
- Plasma therapy: a passive resistance against the deadliest.Human vaccines & immunotherapeutics · 2022Review
- Mortality reduction in pediatric patients with severe fatal human adenoviral pneumonia treated with high titer neutralizing antibodies (NAbs) plasma: a retrospective cohort study.BMC pediatrics · 2022Article
- Therapeutic role of immunomodulators during the COVID-19 pandemic- a narrative review.Postgraduate medicine · 2022Review
- Early Transfusion of Convalescent Plasma Improves the Clinical Outcome in Severe SARS-CoV2 Infection.Infectious diseases and therapy · 2022Article
- Antibody Response against SARS-CoV-2 Infection: Implications for Diagnosis, Treatment and Vaccine Development.International reviews of immunology · 2022Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
Abstract
Convalescent plasma can provide passive immunity during viral outbreaks, but the benefit is uncertain for the treatment of novel coronavirus disease 2019 (COVID-19). Our goal is to assess the efficacy of COVID-19 convalescent plasma (CCP). In all, 526 hospitalized patients with laboratory-confirmed SARS-CoV-2 at an academic health system were analyzed. Among them, 263 patients received CCP and were compared to 263 matched controls with standard treatment. The primary outcome was 28-day mortality with a subanalysis at 7 and 14 days. No statistical difference in 28-day mortality was seen in CCP cases (25·5%) compared to controls (27%, P = 0·06). Seven-day mortality was statistically better for CCP cases (9·1%) than controls (19·8%, P < 0·001) and continued at 14 days (14·8% vs. 23·6%, P = 0·01). After 72 h, CCP transfusion resulted in transitioning from nasal cannula to room air (median 4 days vs. 1 day, P = 0·02). The length of stay was longer in CCP cases than controls (14·3 days vs. 11·4 days, P < 0·001). Patients with COVID-19 who received CCP had a decreased risk of death at 7 and 14 days, but not 28 days after transfusion. To date, this is the largest study demonstrating a mortality benefit for the use of CCP in patients with COVID-19 compared to matched controls.
Indexed as
Identifiers
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.