Evidence map›Paper›PMID 32156732›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2020

Potential for release of pulmonary toxic ketene from vaping pyrolysis of vitamin E acetate.

Dan Wu, Donal F O'Shea

Open access · hybridAbstract read
In one paragraph

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 74 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
74citing papers in PubMed, 1 pooled it
22.9field-weighted citation impact, top 1% 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

74 citing papers in PubMed, 1 synthesis or guideline pooled it, 137 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Vaping-related lung disease: a narrative review.Journal of thoracic disease · 2026
    Review
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Mobilizing for Health: A Case Study of Kazakhstan's Vaping Ban Advocacy Campaign.International journal of environmental research and public health · 2025
    Article
  11. Review
  12. Article
  13. Cannabis concentrate vaping chemistry.Frontiers in toxicology · 2025
    Review
  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Review

14 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

2 authors at 1 institution in 1 country.

Dan WuDepartment of Chemistry, Royal College of Surgeons in Ireland (RCSI), Dublin 2, Ireland donalfoshea@rcsi.ie danwu@rcsi.ie.
Donal F O'SheaDepartment of Chemistry, Royal College of Surgeons in Ireland (RCSI), Dublin 2, Ireland donalfoshea@rcsi.ie danwu@rcsi.ie.ORCID 0000-0003-0594-4193
Royal College of Surgeons in Ireland · IE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A combined analytical, theoretical, and experimental study has shown that the vaping of vitamin E acetate has the potential to produce exceptionally toxic ketene gas, which may be a contributing factor to the upsurge in pulmonary injuries associated with using e-cigarette/vaping products. Additionally, the pyrolysis of vitamin E acetate also produces carcinogen alkenes and benzene for which the negative long-term medical effects are well recognized. As temperatures reached in vaping devices can be equivalent to a laboratory pyrolysis apparatus, the potential for unexpected chemistries to take place on individual components within a vape mixture is high. Educational programs to inform of the danger are now required, as public perception has grown that vaping is not harmful.

Indexed as

Lung InjuryVapingAcetatesElectronic Nicotine Delivery SystemsEthylenesKetonesMolecular StructurePhenolsPyrolysisVitamin EAcetatesEthylenesketeneKetonesPhenolsphenyl acetateVitamin Eketenelung injurypyrolysisvapingvitamin E acetate

Identifiers

PMID32156732
PMCPMC7104367
OpenAlexW3010753680

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.