ArticleProceedings of the National Academy of Sciences of the United States of America2020
Intratumoral injection of the seasonal flu shot converts immunologically cold tumors to hot and serves as an immunotherapy for cancer.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 114 papers, 2 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.
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Who cites it
114 citing papers in PubMed, 2 syntheses or guidelines pooled it, 187 citations in OpenAlex.
- Vaccination of people with solid tumors and diabetes: existing evidence and recommendations. A position statement from a multidisciplinary panel of scientific societies.Journal of endocrinological investigation · 2025Guideline
- Can Radiotherapy Empower the Host Immune System to Counterattack Neoplastic Cells? A Systematic Review on Tumor Microenvironment Radiomodulation.Current oncology (Toronto, Ont.) · 2022Pooled it
- Neoadjuvant intratumoral influenza vaccine treatment in patients with proficient mismatch repair colorectal cancer leads to increased tumor infiltration of CD8+ T cells and upregulation of PD-L1: a phase 1/2 clinical trial.Journal for immunotherapy of cancer · 2023Trial
- Repurposing licensed viral vaccines as anti-cancer therapeutics: Turning cold tumors hot.Human vaccines & immunotherapeutics · 2026Review
- Does acute inflammation triggered by infection promote cancer progression?PLoS biology · 2026Review
- Regulation of antiviral and antitumor immunity by theProceedings of the National Academy of Sciences of the United States of America · 2026Article
- Cross-reactive tissue-resident memory T lymphocytes-concepts, evidence, and open questions.Journal of translational medicine · 2026Review
- Type I interferons induced upon respiratory viral infection impair lung metastatic initiation.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
- Targeting immunosenescence in lung diseases: mechanistic insights and clinical interventions.BMC medicine · 2026Review
- Potential Non-Specific Benefits of Seasonal Influenza Vaccination: Evidence, Knowledge Gaps, and Future Directions.Vaccines · 2026Review
- Tumor mRNA-lipid nanoparticles via chimeric nanobody-lipid co-assembly.Theranostics · 2026Article
- Harnessing SARS-CoV-2 immunity to promote antitumor responses through intratumoral vaccination and adoptive transfer.Frontiers in immunology · 2026Article
- GRK5 as a Novel Therapeutic Target for Immune Evasion in Testicular Cancer: Insights from Multi-Omics Analysis and Immunotherapeutic Validation.Biomedicines · 2025Article
- A phase II study of nivolumab, ipilimumab, and radiation in combination with influenza vaccine in patients with pancreatic cancer (INFLUENCE).Immuno-oncology technology · 2025Article
- New characteristics of cancer immunotherapy: trends in viral tumor immunotherapy with influenza virus-based approaches.Journal of Zhejiang University. Science. B · 2025Review
- Tumor microenvironment: recent advances in understanding and its role in modulating cancer therapies.Medical oncology (Northwood, London, England) · 2025Review
- The applications of live attenuated influenza a virus with modified NS1 gene.Molecular therapy. Nucleic acids · 2025Review
- Intratumoral administration of mRNA COVID-19 vaccine delays melanoma growth in mice.Scientific reports · 2025Article
- mRNA vaccines in the context of cancer treatment: from concept to application.Journal of translational medicine · 2025Review
- The guided fire from within: intratumoral administration of mRNA-based vaccines to mobilize memory immunity and direct immune responses against pathogen to target solid tumors.Cell discovery · 2025Article
54 more citing papers are in PubMed but not listed here.
Corrections and comments
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Authors and funding
48 authors at 7 institutions in 1 country.
Funding
Abstract
Reprogramming the tumor microenvironment to increase immune-mediated responses is currently of intense interest. Patients with immune-infiltrated "hot" tumors demonstrate higher treatment response rates and improved survival. However, only the minority of tumors are hot, and a limited proportion of patients benefit from immunotherapies. Innovative approaches that make tumors hot can have immediate impact particularly if they repurpose drugs with additional cancer-unrelated benefits. The seasonal influenza vaccine is recommended for all persons over 6 mo without prohibitive contraindications, including most cancer patients. Here, we report that unadjuvanted seasonal influenza vaccination via intratumoral, but not intramuscular, injection converts "cold" tumors to hot, generates systemic CD8
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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 OpenQuestion graph.