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Potential of PSMA-targeting radioligand therapy for malignant primary and secondary brain tumours using super-selective intra-arterial administration: a single centre, open label, non-randomised prospective imaging studyResearch in context
- Source :
- EBioMedicine, Vol 102, Iss , Pp 105068- (2024)
- Publication Year :
- 2024
- Publisher :
- Elsevier, 2024.
-
Abstract
- Summary: Background: The aim of this study was to provide quantitative evidence for the potential of PSMA-targeting radioligand therapy (RLT) as treatment approach for malignant brain tumours, and to explore whether tumour uptake could be enhanced by super-selective intra-arterial (ssIA)-administration. Methods: Ten patients (n = 5 high-grade glioma, n = 5 brain metastasis) received 1.5 MBq/kg [68Ga]Ga-PSMA-11 intravenously and, within 7 days, intra-arterially (i.e., selectively in tumour-feeding arteries), followed twice by PET-MRI at 90, 165 and 240 min post-injection. Patient safety was monitored for each procedure. Standardised uptake values (SUVs) were obtained for tumour, healthy-brain, salivary glands and liver. Tumour-to-salivary-gland (T/SG) and tumour-to-liver (T/L) uptake-ratios were calculated. Findings: No adverse events requiring study termination occurred. All patients showed uptake of [68Ga]Ga-PSMA-11 at the tumour site. Uptake was a median 15-fold higher following ssIA-administration (SUVmax median: 142.8, IQR: 102.8–245.9) compared to IV-administration (10.5, IQR:7.5–13.0). According to the bootstrap analysis, mean SUVmax after ssIA (168.8, 95% CI: 110.6–227.0) was well beyond the 95% confidence-interval of IV administration (10.5, 95% CI: 8.4–12.7). Uptake in healthy-brain was negligible, independent of administration route (SUVmean
Details
- Language :
- English
- ISSN :
- 23523964
- Volume :
- 102
- Issue :
- 105068-
- Database :
- Directory of Open Access Journals
- Journal :
- EBioMedicine
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.16456d0bb59e4a6e9822e13f4954dc27
- Document Type :
- article
- Full Text :
- https://doi.org/10.1016/j.ebiom.2024.105068