Evidence map›Paper›PMID 34395266›Full record

ReviewFrontiers in oncology2021

5-ALA in Suspected Low-Grade Gliomas: Current Role, Limitations, and New Approaches.

Barbara Kiesel, Julia Freund, David Reichert, Lisa Wadiura, Mikael T Erkkilae, Adelheid Woehrer, Shawn Hervey-Jumper, Mitchel S Berger, Georg Widhalm

Open access · goldAbstract readReview
In one paragraph

Review in Frontiers in oncology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed, 1 pooled it
5.1field-weighted citation impact, top 4% 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

36 citing papers in PubMed, 1 synthesis or guideline pooled it, 57 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Article
  5. Review
  6. Towards Optical Biopsy in Glioma Surgery.International journal of molecular sciences · 2025
    Review
  7. Review
  8. Review
  9. Emerging nanoplatforms towards microenvironment-responsive glioma therapy.Medical oncology (Northwood, London, England) · 2025
    Review
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
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  17. Review
  18. Article
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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

9 authors at 2 institutions in 2 countries.

Barbara KieselDepartment of Neurosurgery, Medical University of Vienna, Vienna, Austria.
Julia FreundDepartment of Neurosurgery, Medical University of Vienna, Vienna, Austria.
David ReichertCenter for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Austria.
Lisa WadiuraDepartment of Neurosurgery, Medical University of Vienna, Vienna, Austria.
Mikael T ErkkilaeCenter for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Austria.
Adelheid WoehrerDepartment of Neurology, Institute for Neuropathology and Neurochemistry, Medical University of Vienna, Vienna, Austria.
Shawn Hervey-JumperDepartment of Neurological Surgery, University of California San Francisco (UCSF), San Francisco, CA, United States.
Mitchel S BergerDepartment of Neurological Surgery, University of California San Francisco (UCSF), San Francisco, CA, United States.
Georg WidhalmDepartment of Neurosurgery, Medical University of Vienna, Vienna, Austria.
Medical University of Vienna · ATUniversity of California, San Francisco · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Radiologically suspected low-grade gliomas (LGG) represent a special challenge for the neurosurgeon during surgery due to their histopathological heterogeneity and indefinite tumor margin. Therefore, new techniques are required to overcome these current surgical drawbacks. Intraoperative visualization of brain tumors with assistance of 5-aminolevulinic acid (5-ALA) induced protoporphyrin IX (PpIX) fluorescence is one of the major advancements in the neurosurgical field in the last decades. Initially, this technique was exclusively applied for fluorescence-guided surgery of high-grade glioma (HGG). In the last years, the use of 5-ALA was also extended to other indications such as radiologically suspected LGG. Here, we discuss the current role of 5-ALA for intraoperative visualization of focal malignant transformation within suspected LGG. Furthermore, we discuss the current limitations of the 5-ALA technology in pure LGG which usually cannot be visualized by visible fluorescence. Finally, we introduce new approaches based on fluorescence technology for improved detection of pure LGG tissue such as spectroscopic PpIX quantification fluorescence lifetime imaging of PpIX and confocal microscopy to optimize surgery.

Indexed as

5-ALAanaplastic fociconfocal microscopyfluorescence lifetime imagingspectroscopic PpIX analysissuspected LGG

Identifiers

PMID34395266
PMCPMC8362830
OpenAlexW3189754717

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.