Phase III Study of Lutetium 177Lu Vipivotide Tetraxetan Versus Observation for Adult Males With PSMA-Positive Oligometastatic Prostate Cancer to Delay Disease Progression and Castration

What this Trial Is About

Researchers are evaluating the efficacy and safety of lutetium 177Lu vipivotide tetraxetan AAA617 in adult men with oligometastatic prostate cancer OMPC that is progressing after initial treatment to the primary tumor. The goal is to control tumor recurrence and delay progression to fatal metastatic disease while preserving quality of life by postponing androgen deprivation therapy ADT. This is a Phase III, open-label study sponsored by Novartis Pharmaceuticals. Participants will receive stereotactic body radiation therapy SBRT to all metastatic prostate cancer lesions before starting treatment. Those in the investigational group will then receive up to four cycles of AAA617 every six weeks, with each cycle consisting of a dose of 7.4 GBq 200 mCi administered once. The control group will receive SBRT followed by observation without additional treatment. SBRT procedures last about three weeks, and treatment or observation continues until disease progression. Participants will undergo baseline assessments including PETCT scans with gallium 68Ga gozetotide or piflufolastat 18F, CT or MRI and bone scans. Follow-up visits occur weekly during weeks 1 and 3 of each treatment cycle and every 16 weeks thereafter until disease progression. Researchers will monitor metastasis-free survival, time to hormonal therapy, PSA progression, quality of life, pain, adverse events, and overall survival over approximately 6.5 years of study duration.

An Open-label Study Comparing Lutetium (177Lu) Vipivotide Tetraxetan Versus Observation in PSMA Positive OMPC.