Evidence map›Paper›PMID 35327325›Full record

ReviewBiomedicines2022

Imaging Cancer-Associated Fibroblasts (CAFs) with FAPi PET.

Laura Gilardi, Lighea Simona Airò Farulla, Emre Demirci, Ilaria Clerici, Emanuela Omodeo Salè, Francesco Ceci

Abstract readReview
In one paragraph

Review in Biomedicines, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed, 3 pooled it
–field-weighted citation impact
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

48 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. [European journal of medical research · 2023
    Pooled it
  4. Same-day dual-tracer PET/CT imaging with [Annals of nuclear medicine · 2025
    Trial
  5. Review
  6. Article
  7. Comparison between [EJNMMI research · 2026
    Article
  8. Combined antitumor activity of [EJNMMI research · 2026
    Article
  9. Article
  10. Review
  11. Review
  12. Article
  13. Diagnostic Value of [Molecular imaging and biology · 2025
    Article
  14. Review
  15. New Radiopharmaceutical Tracers in Breast Cancer Diagnosis and Therapy.Anti-cancer agents in medicinal chemistry · 2025
    Review
  16. Exploration the feasibility and additional value of [European journal of nuclear medicine and molecular imaging · 2025
    Article
  17. Review
  18. Imaging of Peritoneal Surface Malignancies.Journal of surgical oncology · 2024
    Review
  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

6 authors.

Laura GilardiDivision of Nuclear Medicine, IEO European Institute of Oncology IRCCS, 20141 Milan, Italy.
Lighea Simona Airò FarullaDivision of Nuclear Medicine, IEO European Institute of Oncology IRCCS, 20141 Milan, Italy.
Emre DemirciDepartment of Nuclear Medicine, Faculty of Medicine, Yeditepe University, Istanbul 34718, Turkey.
Ilaria ClericiDivision of Pharmacy, IEO European Institute of Oncology IRCCS, 20141 Milan, Italy.
Emanuela Omodeo SalèDivision of Pharmacy, IEO European Institute of Oncology IRCCS, 20141 Milan, Italy.
Francesco CeciDivision of Nuclear Medicine, IEO European Institute of Oncology IRCCS, 20141 Milan, Italy.ORCID 0000-0001-9785-5248

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The tumor microenvironment (TME) surrounding tumor cells is a complex and highly dynamic system that promotes tumorigenesis. Cancer-associated fibroblasts (CAFs) are key elements in TME playing a pivotal role in cancer cells' proliferation and metastatic spreading. Considering the high expression of the fibroblast activation protein (FAP) on the cell membrane, CAFs emerged as appealing TME targets, namely for molecular imaging, leading to a pan-tumoral approach. Therefore, FAP inhibitors (FAPis) have recently been developed for PET imaging and radioligand therapy, exploring the clinical application in different tumor sub-types. The present review aimed to describe recent developments regarding radiolabeled FAP inhibitors and evaluate the possible translation of this pan-tumoral approach in clinical practice. At present, the application of FAPi-PET has been explored mainly in single-center studies, generally performed in small and heterogeneous cohorts of oncological patients. However, preliminary results were promising, in particular in low FDG-avid tumors, such as primary liver and gastro-entero-pancreatic cancer, or in regions with an unfavorable tumor-to-background ratio at FDG-PET/CT (i.e., brain), and in radiotherapy planning of head and neck tumors. Further promising results have been obtained in the detection of peritoneal carcinomatosis, especially in ovarian and gastric cancer. Data regarding the theranostics approach are still limited at present, and definitive conclusions about its efficacy cannot be drawn at present. Nevertheless, the use of FAPi-based radio-ligand to treat the TME has been evaluated in first-in-human studies and appears feasible. Although the pan-tumoral approach in molecular imaging showed promising results, its real impact in day-to-day clinical practice has yet to be confirmed, and multi-center prospective studies powered for efficacy are needed.

Indexed as

cancer-associated fibroblastFAPifibroblast activation proteinPET/CTtheranostics

Identifiers

PMID35327325
PMCPMC8945705

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Registered trials

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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.