Perspective Therapeutics Highlights Updated Interim Data from its Ongoing Phase 1/2a Clinical Trial of [212Pb]VMT-α-NET at the 2025 ASCO Annual Meeting

Core Viewpoint - Perspective Therapeutics, Inc. announced updated interim results from its ongoing Phase 1/2a clinical trial of [Pb]VMT-α-NET, presented at the 2025 ASCO Annual Meeting, indicating a favorable safety profile and promising anti-tumor activity in patients with neuroendocrine tumors [1][5][11]. Clinical Trial Overview - The Phase 1/2a clinical trial is a multi-center, open-label study focusing on patients with unresectable or metastatic somatostatin receptor type 2 (SSTR2) expressing neuroendocrine tumors who have not received prior radiopharmaceutical therapy [2][12]. - Cohort 2 was reopened for enrollment in August 2024, with a total of 33 additional patients enrolled by April 30, 2025 [4][12]. Efficacy and Safety Data - Updated interim efficacy data were presented for two patients in Cohort 1 and seven patients in Cohort 2, with a data cut-off date of April 30, 2025 [3][5]. - Among 42 patients who received at least one treatment, there were no dose-limiting toxicities (DLTs) or treatment discontinuations due to adverse events reported [4][5]. - Ten patients experienced at least one Grade 3 treatment emergent adverse event (TEAE), with the majority deemed unrelated to [Pb]VMT-α-NET [4][5]. Anti-Tumor Activity - Four of seven patients in Cohort 2 experienced investigator-assessed objective responses, with three confirmed responses [5][11]. - Seven out of nine patients in Cohorts 1 and 2 remained free from disease progression after more than one year of follow-up [5][11]. Future Plans and Regulatory Engagement - The company plans to submit longer safety follow-up data and preliminary efficacy data for a subgroup for presentation at a scientific congress in the second half of 2025 [11][12]. - The company is engaging with the FDA to continue pursuing dose finding for [Pb]VMT-α-NET [10][11]. Company Background - Perspective Therapeutics, Inc. specializes in developing advanced radiopharmaceutical treatments for cancers, utilizing proprietary technology to deliver targeted radiation to cancer cells [14][15]. - The company is also developing complementary imaging diagnostics to personalize treatment and optimize patient outcomes [14].