Convalescent Plasma Restores Viral Clearance After Anti‐Spike Monoclonal Antibody Failure in Immunocompromised COVID‐19 Patients: A Systematic Review and Meta‐Analysis of Individual Patient Data
Year: 2026
Type: review
Study design: Systematic Review
Abstract: Anti-Spike monoclonal antibodies (mAbs) progressively lost efficacy during the COVID-19 pandemic due to the emergence and predominance of resistant SARS-CoV-2 variants. By contrast, high-titre COVID-19 convalescent plasma (CCP) collected from vaccinated donors recently recovered from infection provides a polyclonal source of antibodies that remains effective in clearing SARS-CoV-2 in immunosuppressed patients, unable to mount an adequate immune response against the virus. We conducted a systematic review and individual participant data meta-analysis to examine the effect of CCP in immunocompromised patients persistently positive for SARS-CoV-2 viraemia following mAb therapy, and to evaluate possible biological factors associated with a favourable outcome. Electronic databases were searched for studies published from January 2020 to January 2026. All studies including eligible cases were considered in the systematic review. Unpublished cases were also collected from investigators of the selected studies. The protocol was registered at PROSPERO (CRD420251142891). Forty-seven cases (30 cases from 12 published studies and 17 unpublished cases) were included. In 33 out of 47 patients (70.2%) with a mAb-resistant infection, SARS-CoV-2 clearance occurred following CCP transfusion, with a mean of 2.7 CCP units administered. In logistic regression, total CCP volume transfused was positively associated with SARS-CoV-2 clearance. In conclusion, CCP transfusion was associated with SARS-CoV-2 clearance in persistently positive immunocompromised patients following failure of anti-Spike mAb therapy.
Source: Reviews in Medical Virology
DOI: 10.1002/rmv.70185
Authors: Daniele Focosi, Tommaso Francesco Aiello, Arturo Casadevall, Mario Cruciani, Alessandra D'Abramo, Patrizia De Marco, David Gachoud, Carolina Garcia‐Vidal, Claudia Glingani, Thomas Hueso, Michael J. Joyner, Karine Lacombe, Carlo Mengoli, Emanuele Nicastri, Quentin Richier, Nathalie Rufer, Jonathon W. Senefeld, Shmuel Shoham, David J. Sullivan, Luca Tomisti, Barbora Weinbergerova, Matteo Zani, Solomiia Zaremba, Massimo Franchini
Institutions: Azienda USL Toscana Nord Ovest, Hospital Universitari Germans Trias i Pujol, Fundació Lluita contra les Infeccions, Johns Hopkins University, Azienda Ospedaliera Carlo Poma, Istituto Nazionale per le Malattie Infettive Lazzaro Spallanzani, Istituti di Ricovero e Cura a Carattere Scientifico, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Instituto de Salud Carlos III, Centro de Investigación Biomédica en Red, Hospital Clínic de Barcelona, Consorci Institut D'Investigacions Biomediques August Pi I Sunyer, Centro de Investigación Biomédica en Red Enfermedades Infecciosas, Universitat de Barcelona, Institut Gustave Roussy, Mayo Clinic, Inserm, Sorbonne Université, Assistance Publique – Hôpitaux de Paris, Hôpital Saint-Antoine, Institut Pierre Louis d‘Épidémiologie et de Santé Publique, University of Illinois Urbana-Champaign, Johns Hopkins Medicine, Masaryk University
Language: English
Subfield: Infectious Diseases
Field: Medicine
Domain: Health Sciences
Open Access status: green
OpenAlex ID: W7171990273