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@ARTICLE{Lanzafame:303112,
author = {H. Lanzafame$^*$ and C. E. Heilig$^*$ and E. Wardelmann and
M. Desaulniers$^*$ and K. M. Pabst$^*$ and I. A.
Mavroeidi$^*$ and I. Pretzell$^*$ and P. Fragoso Costa$^*$
and M. Nader$^*$ and S. Leyser$^*$ and M. Schuler$^*$ and S.
Bauer$^*$ and J. T. Siveke$^*$ and L. Kamkar$^*$ and S.
Kreutzfeldt$^*$ and S. Fröhling$^*$ and S. Mühl and K.
Herrmann$^*$ and W. P. Fendler$^*$ and R. Hamacher$^*$},
title = {90{Y}-{FAPI}-46 {T}heranostics {L}eads to {N}ear-{C}omplete
{M}etabolic {R}esponse in 3 {P}atients with {S}olitary
{F}ibrous {T}umors.},
journal = {Journal of nuclear medicine},
volume = {66},
number = {9},
issn = {0097-9058},
address = {New York, NY},
publisher = {Soc.},
reportid = {DKFZ-2025-01531},
pages = {1378-1384},
year = {2025},
note = {2025 Sep 2;66(9):1378-1384},
abstract = {Solitary fibrous tumor (SFT) is a rare soft-tissue sarcoma
with limited treatment options, especially in advanced or
metastatic cases. Fibroblast activation protein α (FAPα)
is overexpressed in certain sarcomas, including SFTs, making
it a promising target for diagnostics and
radiopharmaceutical therapy (RPT). We present the cases of 3
patients with metastatic SFTs who, after exhausting standard
treatments, underwent molecular profiling and showed
elevated FAPα expression. Methods: Messenger RNA and
protein expression of FAPα were examined in biopsy samples
from 3 patients participating in the Molecularly Aided
Stratification for Tumor Eradication Research program, a
multicenter observational study focused on biology-driven
stratification of adults with advanced cancer. Messenger RNA
expression levels were quantified as transcripts per
million, with RNA extraction, sequencing, and data
processing performed using established protocols. Protein
expression was assessed and stained with FAPα
immunohistochemistry using a recombinant anti-FAPα
antibody. Following the recommendation of the molecular
tumor board, these patients received 90Y-labeled fibroblast
activation protein inhibitor (FAPI)-46 RPT because of the
high uptake observed in 68Ga-FAPI-46 PET/CT scans. Results:
90Y-FAPI-46 RPT led to substantial clinical benefits,
including metabolic resolution and symptom relief, with
disease control confirmed using RECIST and PERCIST.
Treatment was well-tolerated, with only minor adverse events
observed. Conclusion: Our findings underscore the utility of
FAPα screening as a predictive biomarker and the potential
of FAP-targeted RPT as a viable treatment for advanced SFT.},
keywords = {90Y-FAPI radiopharmaceutical therapy (Other) / SFT (Other)
/ immunohistochemistry (Other) / mRNA (Other) / sarcoma
(Other)},
cin = {ED01 / B340 / HD01},
ddc = {610},
cid = {I:(DE-He78)ED01-20160331 / I:(DE-He78)B340-20160331 /
I:(DE-He78)HD01-20160331},
pnm = {312 - Funktionelle und strukturelle Genomforschung
(POF4-312)},
pid = {G:(DE-HGF)POF4-312},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:40707141},
doi = {10.2967/jnumed.125.269572},
url = {https://inrepo02.dkfz.de/record/303112},
}