SynthesisBlood advances2022
Immunogenicity of COVID-19 vaccines in patients with hematologic malignancies: a systematic review and meta-analysis.
Synthesis in Blood advances, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers, 9 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
54 citing papers in PubMed, 9 syntheses or guidelines pooled it, 85 citations in OpenAlex.
- Vaccines for preventing infections in adults with haematological malignancies.The Cochrane database of systematic reviews · 2025Pooled it
- Vaccine challenges in CLL: a comprehensive exploration of efficacy of SARS-CoV-2 immunization for patients with chronic lymphocytic leukemia.Annals of hematology · 2024Pooled it
- Vaccination of Adults With Cancer: ASCO Guideline.Journal of clinical oncology : official journal of the American Society of Clinical Oncology · 2024Guideline
- A systematic review and meta-analysis of the global prevalence and determinants of COVID-19 vaccine acceptance and uptake in people living with HIV.Nature human behaviour · 2024Pooled 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
- A systematic review and meta-analysis of immune response against first and second doses of SARS-CoV-2 vaccines in adult patients with hematological malignancies.International immunopharmacology · 2022Pooled it
- Efficacy and safety profile of COVID-19 mRNA vaccine in patients with hematological malignancies: Systematic review and meta-analysis.Frontiers in oncology · 2022Pooled it
- COVID-19 vaccine response and safety in patients with cancer: An overview of systematic reviews.Frontiers in public health · 2022Pooled it
- Humoral response to mRNA-based COVID-19 vaccine and booster effect of a third dose in patients with mature T cell and NK-cell neoplasms.Annals of hematology · 2023Trial
- Interferon-α Nasal Spray Prophylaxis Reduces COVID-19 in Cancer Patients: A Randomized, Double-Blinded, Placebo-Controlled Trial.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2026Article
- Cancer and COVID-19: A review of immune insights and partnerships to inform public health strategy.International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases · 2026Review
- Innovation in active and passive immunisation of people who are immunocompromised: a call to action.The Lancet. Infectious diseases · 2026Review
- COVID-19-induced thrombotic microangiopathy in patients with multiple myeloma receiving carfilzomib treatment.International journal of hematology · 2025Article
- Impact of COVID-19 vaccination on cancer patients: safety, efficacy, and long-term effects.Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer · 2025Review
- Article
- Feasibility and Effectiveness of Vaccines for COVID-19: An Umbrella Review.Archives of academic emergency medicine · 2025Review
- Impact of COVID-19 Pandemic on the Management of Oncology Patients in Eastern Canada.Journal of patient experience · 2025Article
- Delphi Panel Consensus Statement Generation: COVID-19 Vaccination Recommendations for Immunocompromised Populations in the European Union.Infectious diseases and therapy · 2024Article
- Outcomes in Hematopoietic Cell Transplant and Chimeric Antigen Receptor T-Cell Therapy Recipients With Pre-Cellular Therapy SARS-CoV-2 Infection.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2024Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 4 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The objectives of this study were to assess the immunogenicity and safety of COVID-19 vaccines in patients with hematologic malignancies. A systematic review and meta-analysis of clinical studies of immune responses to COVID-19 vaccination stratified by underlying malignancy and published from January 1, 2021, to August 31, 2021, was conducted using MEDLINE, EMBASE, and Cochrane CENTRAL. Primary outcome was the rate of seropositivity after 2 doses of COVID-19 vaccine with rates of seropositivity after 1 dose, rates of positive neutralizing antibodies, cellular responses, and adverse events as secondary outcomes. Rates were pooled from single-arm studies while rates of seropositivity were compared against the rate in healthy controls for comparator studies using a random effects model and expressed as a pooled odds ratios with 95% confidence intervals. Forty-four studies (16 mixed group, 28 disease specific) with 7064 patients were included in the analysis (2331 after first dose, 4733 after second dose). Overall seropositivity rates were 62% to 66% after 2 doses of COVID-19 vaccine and 37% to 51% after 1 dose. The lowest seropositivity rate was 51% in patients with chronic lymphocytic leukemia and was highest in patients with acute leukemia (93%). After 2 doses, neutralizing antibody response rates were 57% to 60%, and cellular response rates were 40% to 75%. Active treatment, ongoing or recent treatment with targeted and CD-20 monoclonal antibody therapies within 12 months were associated with poor immune responses to COVID-19 vaccine. New approaches to prevention are urgently required to reduce COVID-19 infection morbidity and mortality in high-risk patient groups that respond poorly to COVID-19 vaccination.
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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.