Plus Therapeutics to Present ReSPECT Phase 1 Dose Escalation Study Results for Leptomeningeal Metastases at the 2025 San Antonio Breast Cancer Symposium

On December 1, 2025 Plus Therapeutics, Inc. (Nasdaq: PSTV) (the "Company"), a clinical-stage pharmaceutical company developing targeted radiotherapeutics with advanced platform technologies for central nervous system (CNS) cancers, reported the acceptance of an abstract for poster spotlight (with oral) presentation at the upcoming San Antonio Breast Cancer Symposium (SABCS), being held on December 9-12, 2025, in San Antonio, TX.

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Poster Spotlight Presentation:

Title Rhenium (186Re) obisbemeda (rhenium nanoliposome, 186RNL) for the treatment of leptomeningeal metastases (LM): Phase 1 dose escalation study results

Presenter Andrew Brenner, M.D., Ph.D., Professor and Kolitz / Zachry Endowed Chair Neuro-Oncology Research; Co-Leader, Experimental and Developmental Therapeutics Program, University of Texas Health, Science Center at San Antonio

Presentation
Date/Time Friday, December 12, 2025, 7:39am to 7:42 am CST

Session
Date/Time Friday, December 12, 2025, 7:00am to 8:30 am CST

Location
Hemisfair 3, Henry B. Gonzalez Convention Center

About LM
Leptomeningeal metastases (LM) are a rare but severe complication of advanced cancer, affecting the fluid-lined structures of the central nervous system. LM occurs in approximately 5% of patients with metastatic cancer, with breast cancer, lung cancer, and melanoma being the most common sources. Median survival is typically 2-6 months, and effective treatment options are limited, highlighting the urgent need for novel therapies.

About REYOBIQ (rhenium Re186 obisbemeda)
REYOBIQ (rhenium Re186 obisbemeda) is a novel injectable radiotherapy specifically formulated to deliver direct targeted high dose radiation in CNS tumors in a safe, effective, and convenient manner to optimize patient outcomes. REYOBIQ has the potential to reduce off target risks and improve outcomes for CNS cancer patients, versus currently approved therapies, with a more targeted and potent radiation dose. Rhenium-186 is an ideal radioisotope for CNS therapeutic applications due to its short half-life, beta energy for destroying cancerous tissue, and gamma energy for real-time imaging. REYOBIQ is being evaluated for the treatment of recurrent glioblastoma, leptomeningeal metastases, and pediatric brain cancer in the ReSPECT-GBM, ReSPECT-LM, and ReSPECT-PBC clinical trials. ReSPECT-GBM is supported by an award from the National Cancer Institute (NCI), part of the U.S. National Institutes of Health (NIH), and ReSPECT-LM is funded by a three-year $17.6M grant by the Cancer Prevention & Research Institute of Texas (CPRIT). The Company’s ReSPECT-PBC clinical trial for pediatric brain cancer is supported by a $3 million grant from the U.S. Department of Defense’s Peer Reviewed Cancer Research Program.

(Press release, Plus Therapeutics, DEC 1, 2025, View Source [SID1234661025])