ArticleBlood advances2026
Immunogenicity and safety of a third and subsequent COVID-19 vaccine doses in patients with plasma cell dyscrasias.
Article in Blood advances, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
45 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
abstractPlasma cell dyscrasias (PCD) are a group of hematologic disorders associated with immune dysfunction from underlying disease and/or treatment. With the continued circulation of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), optimizing and maintaining durable protection in this vulnerable population through vaccination remains important. A prospective cohort study was conducted between August 2021 and January 2023 across 12 sites in Canada to evaluate humoral immunity to COVID-19 vaccination in participants with hematologic malignancies. Participants were monitored longitudinally, and finger-prick dried blood spot cards were obtained at specific intervals based on vaccination. Serum antibodies against SARS-CoV-2 proteins after the third, fourth, and fifth dose were measured by high-throughput enzyme-linked immunosorbent assay. Differences in antispike (anti-S) seropositivity by vaccine dose number and clinical risk factors were analyzed by logistic regression. A total of 262 unique participants with 983 samples were included for analysis, among which 66% were diagnosed with PCD. Analysis of the predicted probability of immunity showed consistently higher proportions of participants with PCD with vaccine (anti-S) immunity compared with those with infection-derived (antinucleocapsid) immunity throughout the study. Although vaccine responses appeared to wane 6 months after dose 3 and, to a lesser extent, after dose 4, subsequent doses cumulatively increased anti-S immunity. Seropositivity decreased with anti-CD38 therapy and older age, although the receipt of additional vaccine doses significantly improved anti-S immunity. Overall, this study demonstrated that the third and subsequent COVID-19 vaccine doses could safely improve humoral immunity in participants with PCD. Although anti-CD38 therapy and age reduced seropositivity, antibody responses could still be enhanced with vaccine doses beyond the primary 3-dose series.
Indexed as
Identifiers
What Socratic 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 Socratic graph.