[68Ga]Ga-PSMA-11 PET baseline imaging as a prognostic tool for clinical outcomes to [177Lu]Lu-PSMA-617 in patients with mCRPC: A VISION substudy
| العنوان: | [68Ga]Ga-PSMA-11 PET baseline imaging as a prognostic tool for clinical outcomes to [177Lu]Lu-PSMA-617 in patients with mCRPC: A VISION substudy |
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| المؤلفون: | Phillip Kuo, Jacob Hesterman, Kambiz Rahbar, Ayse T. Kendi, Xiao X. Wei, Bruno Fang, Nabil Adra, Andrew J. Armstrong, Rohan Garje, Jeff M. Michalski, Samson Ghebremariam, Marcia Brackman, Connie Wong, Taylor Benson, Nicholas J. Vogelzang |
| المصدر: | Journal of Clinical Oncology. 40:5002-5002 |
| بيانات النشر: | American Society of Clinical Oncology (ASCO), 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Cancer Research, Oncology |
| الوصف: | 5002 Background: In the phase 3 VISION study, gallium (68Ga) gozetotide (68Ga-PSMA-11) PET/CT imaging was used to determine eligibility for lutetium (177Lu) vipivotide tetraxetan (177Lu-PSMA-617). Given that 177Lu-PSMA-617 targets PSMA, we assessed the association between quantitative PSMA imaging parameters and treatment outcomes. Methods: In VISION, adults with mCRPC with ≥ 1 PSMA-positive (+) and no PSMA-negative lesions meeting the exclusion criteria were enrolled. In this sub-study, the association between imaging data from pre-enrollment 68Ga-PSMA-11 PET/CT scans of pts in the 177Lu-PSMA-617 group and clinical outcomes was assessed. Imaging data meeting quality requirements were analyzed for 548/551 pts. PSMA expression was quantified by 5 PET parameters: PSMA+ lesions by region, mean standardized uptake value (SUVmean), maximum SUV (SUVmax), PSMA+ tumor volume, and tumor load (PSMA+ tumor volume × SUVmean). Parameters were extracted from the whole body and 4 regions. Association between PET parameters and radiographic progression-free survival (rPFS; primary objective), overall survival (OS), objective response rate (ORR), and prostate–specific antigen 50 (PSA50) response was assessed. Results: Most pts (92.7%) had PSMA uptake in bone. In both the whole-body and regional analyses, statistically significant associations of PSMA PET parameters to clinical outcomes were observed (whole-body data shown in Table). Higher whole-body SUVmean was associated with improved clinical outcomes; pts in the highest quartile (SUVmean: rPFS, ≥ 10.2; OS, ≥ 9.9) had a median rPFS and OS of 14.1 and 21.4 months, vs 5.8 and 14.5 months for those in the lowest quartile (< 6.0; < 5.7), respectively. Absence of PSMA+ lesions in bone, liver, and lymph node, and lower PSMA+ tumor load, were indicators of good prognosis. Conclusions: Higher SUVmean is strongly associated with improved outcomes with 177Lu-PSMA-617; clinical efficacy for different SUV levels vs the SoC arm is being assessed. Data support use of 68Ga-PSMA-11 PET/CT scan to identify pts who will benefit from PSMA-targeted radioligand therapy.[Table: see text] |
| تدمد: | 1527-7755 0732-183X |
| DOI: | 10.1200/jco.2022.40.16_suppl.5002 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::bfd09e32e6ce5d1bee2ba1ecb76204e0 https://doi.org/10.1200/jco.2022.40.16_suppl.5002 |
| رقم الانضمام: | edsair.doi...........bfd09e32e6ce5d1bee2ba1ecb76204e0 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15277755 0732183X |
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| DOI: | 10.1200/jco.2022.40.16_suppl.5002 |