Core Insights - Plus Therapeutics, Inc. is focused on developing targeted radiotherapeutics for central nervous system (CNS) cancers, with a particular emphasis on leptomeningeal metastases (LM) and recurrent glioblastoma (GBM) [5] - The company's subsidiary, CNSide Diagnostics, will present its CNSide Cerebrospinal Fluid (CSF) Assay Platform at the SNO/ASCO CNS Metastases Conference, showcasing its clinical utility in managing patients at risk for CNS metastases [1][2] Company Overview - Plus Therapeutics is a clinical-stage pharmaceutical company headquartered in Houston, Texas, developing advanced platform technologies for CNS cancers [5] - CNSide Diagnostics specializes in proprietary laboratory-developed tests to identify tumor cells that have metastasized to the CNS, enhancing patient management for those with leptomeningeal metastases [3] Industry Context - Leptomeningeal metastases occur in approximately 5% of patients with metastatic cancer, with breast cancer, lung cancer, and melanoma being the most common sources [4] - Median survival for patients with LM is typically between 2 to 6 months, indicating a significant need for novel therapeutic options [4]

Core Insights - Plus Therapeutics is set to launch its CNSide CSF Assay Platform in the U.S. market in the second half of 2025, targeting a significant unmet need in CNS cancer diagnostics with a market opportunity exceeding $6 billion [1][2][4] Company Overview - Plus Therapeutics, Inc. is a clinical-stage pharmaceutical company focused on developing targeted radiotherapeutics for central nervous system (CNS) cancers [14] - The company has invested over $300 million in the CNSide technology, which aims to address the clinical need for better diagnostic tools in CNS cancer [3] Product Details - The CNSide CSF Assay Platform is designed for patients suspected of having CNS cancer metastases, with the first test, CNSide CSF Tumor Cell Enumeration (TCE), expected to be commercialized soon [2][4] - The platform has demonstrated high sensitivity (92%) and specificity (95%) in diagnosing CNS metastases, influencing treatment decisions in 90% of cases [5] Market Opportunity - CNS metastases affect approximately 30% of adult cancer patients, and the current standard of care for diagnosis is outdated, leading to missed or delayed diagnoses [4] - The CNSide platform is positioned to provide superior clinical utility compared to the current standard of care, which has been validated through real-world use and peer-reviewed publications [5] Commercial Strategy - Plus Therapeutics has established a scalable testing laboratory in Houston, TX, and is executing a commercial market access strategy that includes state licensure and reimbursement codes [6][7] - The company anticipates launching the CNSide platform in Texas first, followed by expansion into additional states [6] Financial Outlook - The revenue contributions from the CNSide subsidiary are expected to become meaningful to Plus Therapeutics' operations in fiscal year 2026 [9]