Evidence map›Paper›PMID 34832939›Full record

ArticlePharmaceuticals (Basel, Switzerland)2021

Phage Therapy in the 21st Century: Is There Modern, Clinical Evidence of Phage-Mediated Efficacy?

Stephen T Abedon, Katarzyna M Danis-Wlodarczyk, Diana R Alves

Open access · goldAbstract read
In one paragraph

Article in Pharmaceuticals (Basel, Switzerland), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed
7.6field-weighted citation impact, top 2% of its field
1 · What the graph read from 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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

41 citing papers in PubMed, 58 citations in OpenAlex.

  1. The Joint Action of Bacteriophage and Antibiotics in the Treatment ofbioRxiv : the preprint server for biology · 2026
    Article
  2. Article
  3. Article
  4. Isolation and characterization of a lytic phage and its efficacy against multi-drug resistant strains of pseudomonas aeruginosa.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2026
    Article
  5. Article
  6. Avian PathogenicVeterinary sciences · 2025
    Review
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. In Vitro Susceptibility of Clinical and Carrier Strains ofInternational journal of molecular sciences · 2024
    Article
  13. Article
  14. Review
  15. Phage-Antibiotic Combination Therapy against RecurrentAntibiotics (Basel, Switzerland) · 2024
    Article
  16. Article
  17. Potential of an Isolated Bacteriophage to InactivateAntibiotics (Basel, Switzerland) · 2024
    Article
  18. Review
  19. Cell-free synthesis of infective phages fromSynthetic biology (Oxford, England) · 2024
    Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 2 institutions in 1 country.

Stephen T AbedonDepartment of Microbiology, The Ohio State University, Mansfield, OH 44906, USA.ORCID 0000-0001-9151-2375
Katarzyna M Danis-WlodarczykDepartment of Microbial Infection and Immunity, The Ohio State University, Columbus, OH 43210, USA.
Diana R AlvesDepartment of Microbiology, The Ohio State University, Mansfield, OH 44906, USA.
The Ohio State University at Mansfield · USThe Ohio State University · US

Funding

Phage extracellular polysaccharide depolymerases to combat Pseudomonas aeruginosa biofilmsR21AI156304 · NIAID · OHIO STATE UNIVERSITY · PI ABEDON, STEPHEN T · 2021 to 2022
$429k
NIAID NIH HHS R21 AI156304
6 · The paper itself

Abstract

Many bacteriophages are obligate killers of bacteria. That this property could be medically useful was first recognized over one hundred years ago, with 2021 being the 100-year anniversary of the first clinical phage therapy publication. Here we consider modern use of phages in clinical settings. Our aim is to answer one question: do phages serve as effective anti-bacterial infection agents when used clinically? An important emphasis of our analyses is on whether phage therapy-associated anti-bacterial infection efficacy can be reasonably distinguished from that associated with often coadministered antibiotics. We find that about half of 70 human phage treatment reports-published in English thus far in the 2000s-are suggestive of phage-mediated anti-bacterial infection efficacy. Two of these are randomized, double-blinded, infection-treatment studies while 14 of those studies, in our opinion, provide superior evidence of a phage role in observed treatment successes. Roughly three-quarters of these potentially phage-mediated outcomes are based on microbiological as well as clinical results, with the rest based on clinical success. Since many of these phage treatments are of infections for which antibiotic therapy had not been successful, their collective effectiveness is suggestive of a valid utility in employing phages to treat otherwise difficult-to-cure bacterial infections.

Indexed as

bacteriophage therapycase studyclinical studycombination therapycompassionate useexpanded access

Identifiers

PMID34832939
PMCPMC8625828
OpenAlexW3212103432

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.