SPLASH

SPLASH, trial NCT04647526 sponsored by Lantheus through POINT Biopharma and reported in 2024, tested a second PSMA radioligand, 177Lu-PNT2002, also known as 177Lu-PSMA-I&T, against a switch of androgen receptor pathway inhibitor in PSMA-positive, taxane-naive metastatic castration-resistant prostate cancer. It randomised 412 men and met its primary radiographic progression-free survival endpoint, but the interim overall survival analysis was numerically unfavourable, with 46 percent of events and 84 percent crossover, and Lantheus deprioritised a US filing pending mature data. OnCo links it to prostate cancer and to the 177Lu-PSMA-I&T drug record; its effect was smaller than PSMAfore's with a different ligand and dosing, while ECLIPSE with the same ligand met its progression endpoint. Whether crossover masked a real benefit or the drug simply adds little is the open question.