Evidence map›Paper›PMID 27575852›Full record

ArticleBritish journal of cancer2016

Comparing desferrioxamine and light fractionation enhancement of ALA-PpIX photodynamic therapy in skin cancer.

Ana Luiza Ribeiro de Souza, Kayla Marra, Jason Gunn, Kimberley S Samkoe, Stephen Chad Kanick, Scott C Davis, M Shane Chapman, Edward V Maytin, Tayyaba Hasan, Brian W Pogue

Open access · hybridAbstract read
In one paragraph

Article in British journal of cancer, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
4.1field-weighted citation impact, top 6% 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

27 citing papers in PubMed, 50 citations in OpenAlex.

  1. Review
  2. Review
  3. Phototherapy in cancer treatment: strategies and challenges.Signal transduction and targeted therapy · 2025
    Review
  4. Article
  5. Review
  6. Review
  7. Article
  8. Effect of intermittency factor on singlet oxygen and PGEBiochemistry and biophysics reports · 2022
    Article
  9. Review
  10. Article
  11. Article
  12. Review
  13. Review
  14. Article
  15. Review
  16. Article
  17. Article
  18. Article
  19. 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

10 authors at 4 institutions in 2 countries.

Ana Luiza Ribeiro de SouzaThayer School of Engineering, Dartmouth College, Hanover, NH 03755, USA.
Kayla MarraThayer School of Engineering, Dartmouth College, Hanover, NH 03755, USA.
Jason GunnThayer School of Engineering, Dartmouth College, Hanover, NH 03755, USA.
Kimberley S SamkoeThayer School of Engineering, Dartmouth College, Hanover, NH 03755, USA.
Stephen Chad KanickThayer School of Engineering, Dartmouth College, Hanover, NH 03755, USA.
Scott C DavisThayer School of Engineering, Dartmouth College, Hanover, NH 03755, USA.
M Shane ChapmanDepartment of Surgery, Geisel School of Medicine, Dartmouth College, Lebanon, NH 03756, USA.
Edward V MaytinDepartment of Biomedical Engineering, Cleveland Clinic, Cleveland, OH 44195, USA.
Tayyaba HasanWellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA.
Brian W PogueThayer School of Engineering, Dartmouth College, Hanover, NH 03755, USA.
Dartmouth College · USCleveland Clinic · USHarvard University · USMinistry of Education · BR

Funding

Small Molecule Enhancers of Photodynamic Therapy for Skin CancerP01CA084203 · NCI · MASSACHUSETTS GENERAL HOSPITAL · PI Brian William Pogue · 2001 to 2026
$27.9M
NCI NIH HHS P01 CA084203
6 · The paper itself

Abstract

backgroundAminolevulinic acid (ALA)-based photodynamic therapy (PDT) provides selective uptake and conversion of ALA into protoporphyrin IX (PpIX) in actinic keratosis and squamous cell carcinoma, yet large response variations in effect are common between individuals. The aim of this study was to compare pre-treatment strategies that increase the therapeutic effect, including fractionated light delivery during PDT (fPDT) and use of iron chelator desferrioxamine (DFO), separately and combined.

methodsOptical measurements of fluorescence were used to quantify PpIX produced, and the total amount of PpIX photobleached as an implicit measure of the photodynamic dose. In addition, measurements of white light reflectance were used to quantify changes in vascular physiology throughout the PDT treatment.

resultsfPDT produced both a replenishment of PpIX and vascular re-oxygenation during a 2 h dark interval between the first and second PDT light fractions. The absolute photodynamic dose was increased 57% by fPDT, DFO and their combination, as compared with PDT group (from 0.7 to 1.1). Despite that light fractionation increased oedema and scab formation during the week after treatment, no significant difference in long-term survival has been observed between treatment groups. However, outcomes stratified on the basis of measured photodynamic dose showed a significant difference in long-term survival.

conclusionsThe assessment of implicit photodynamic dose was a more significant predictor of efficacy for ALA-PDT skin cancer treatments than prescription of an enhanced treatment strategy, likely because of high individual variation in response between subjects.

Indexed as

Aminolevulinic AcidAnimalsCarcinoma, Squamous CellCell Line, TumorDeferoxamineDose Fractionation, RadiationDose-Response Relationship, RadiationFemaleHemeHumansLasers, SemiconductorLightingMiceMice, NudePhotochemotherapyPhotosensitizing AgentsAminolevulinic AcidDeferoxamineHemePhotosensitizing Agentsprotoporphyrin IXProtoporphyrinsSiderophores

Identifiers

PMID27575852
PMCPMC5046214
OpenAlexW2514227379

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.