Reyobiq (rhenium Re186 obisbemeda) / NanoTx Therap, Plus Therap - LARVOL DELTA

Rhenium (186Re) obisbemeda (rhenium nanoliposome,186RNL) for the treatment of leptomeningeal metastases (LM): Phase 1 dose escalation study results (SABCS 2025) - "Reyobiq shows excellent safety and promising activity for LM. A single dose for patients with LM was well-tolerated up to the RP2D of 44.10 mCi, with high absorbed doses to the treatment area, acceptable organ doses, and encouraging response and reductions in tumor cell count. Within the breast cancer patients, response rate and survival were also promising."

P1 data • Breast Cancer • HER2 Breast Cancer • HER2 Negative Breast Cancer • HER2 Positive Breast Cancer • Hormone Receptor Negative Breast Cancer • Hormone Receptor Positive Breast Cancer • Triple Negative Breast Cancer • ER • HER-2 • PGR

Phase 1/2 ReSPECT-GBM Trial of Rhenium (186Re) Obisbemeda in Recurrent Glioblastoma: Safety and Efficacy from the Phase 1 and Update on Phase 2 (WFNOS 2025) - "Rhenium (186Re) Obisbemeda (186RNL; Reyobiq), a novel radiotherapeutic consisting of 186Re encapsulated in nanoliposomes, is under investigation for convection enhanced delivery in recurrent glioblastoma (GBM) in the Phase 1/2 ReSPECT-GBM trial (IND 116117)...Preliminary efficacy data from Phase 1 cohorts 1 to 6 (N=21) showed a median overall survival (mOS) of 17.0 months (95% CI 8.0–35.0) for patients receiving ≥100 Gy (n=12), compared to 6.0 months (95% CI 1.0–11.0) for those receiving <100 Gy (N=9), surpassing historical bevacizumab monotherapy outcomes (mOS ~7.4–9.2 months)...SPECT/CT imaging confirms high tumor-specific radiation retention, with minimal systemic exposure. These results support Reyobiq’s promising safety and efficacy profile, warranting further investigation as a novel therapeutic for recurrent GBM, addressing a critical unmet medical need."

Clinical • P1/2 data • P2 data • Brain Cancer • CNS Disorders • Cognitive Disorders • Developmental Disorders • Glioblastoma • Glioma • Oncology • Solid Tumor

Phase 1/2 ReSPECT-GBM Trial of Rhenium (186Re) Obisbemeda in Recurrent Glioblastoma: Safety and Efficacy from the Phase 1 and Update on Phase 2 (WFNOS 2025) - P1/2 | "Rhenium (186Re) Obisbemeda (186RNL; Reyobiq), a novel radiotherapeutic consisting of 186Re encapsulated in nanoliposomes, is under investigation for convection enhanced delivery in recurrent glioblastoma (GBM) in the Phase 1/2 ReSPECT-GBM trial (IND 116117)...Preliminary efficacy data from Phase 1 cohorts 1 to 6 (N=21) showed a median overall survival (mOS) of 17.0 months (95% CI 8.0–35.0) for patients receiving ≥100 Gy (n=12), compared to 6.0 months (95% CI 1.0–11.0) for those receiving <100 Gy (N=9), surpassing historical bevacizumab monotherapy outcomes (mOS ~7.4–9.2 months)...SPECT/CT imaging confirms high tumor-specific radiation retention, with minimal systemic exposure. These results support Reyobiq’s promising safety and efficacy profile, warranting further investigation as a novel therapeutic for recurrent GBM, addressing a critical unmet medical need."

Clinical • P1/2 data • P2 data • Brain Cancer • CNS Disorders • Cognitive Disorders • Developmental Disorders • Glioblastoma • Solid Tumor

Phase 1/2 ReSPECT-GBM Trial of Rhenium (186Re) Obisbemeda in Recurrent Glioblastoma: Safety and Efficacy from the Phase 1 and Update on Phase 2 (SNO 2025) - "Rhenium (186Re) Obisbemeda (186RNL; Reyobiq), a novel radiotherapeutic consisting of 186Re encapsulated in nanoliposomes, is under investigation for convection enhanced delivery in recurrent glioblastoma (GBM) in the Phase 1/2 ReSPECT-GBM trial (IND 116117)...Preliminary efficacy data from Phase 1 cohorts 1 to 6 (N=21) showed a median overall survival (mOS) of 17.0 months (95% CI 8.0–35.0) for patients receiving ≥100 Gy (n=12), compared to 6.0 months (95% CI 1.0–11.0) for those receiving <100 Gy (N=9), surpassing historical bevacizumab monotherapy outcomes (mOS ~7.4–9.2 months)...SPECT/CT imaging confirms high tumor-specific radiation retention, with minimal systemic exposure. These results support Reyobiq's promising safety and efficacy profile, warranting further investigation as a novel therapeutic for recurrent GBM, addressing a critical unmet medical need."

Clinical • P1/2 data • P2 data • Brain Cancer • CNS Disorders • Cognitive Disorders • Developmental Disorders • Glioblastoma • Solid Tumor

Phase 1/2 ReSPECT-GBM Trial of Rhenium (186Re) Obisbemeda in Recurrent Glioblastoma: Safety and Efficacy from the Phase 1 and Update on Phase 2 (SNO 2025) - "Rhenium (186Re) Obisbemeda (186RNL; Reyobiq), a novel radiotherapeutic consisting of 186Re encapsulated in nanoliposomes, is under investigation for convection enhanced delivery in recurrent glioblastoma (GBM) in the Phase 1/2 ReSPECT-GBM trial (IND 116117)...Preliminary efficacy data from Phase 1 cohorts 1 to 6 (N=21) showed a median overall survival (mOS) of 17.0 months (95% CI 8.0–35.0) for patients receiving ≥100 Gy (n=12), compared to 6.0 months (95% CI 1.0–11.0) for those receiving <100 Gy (N=9), surpassing historical bevacizumab monotherapy outcomes (mOS ~7.4–9.2 months)...SPECT/CT imaging confirms high tumor-specific radiation retention, with minimal systemic exposure. These results support Reyobiq's promising safety and efficacy profile, warranting further investigation as a novel therapeutic for recurrent GBM, addressing a critical unmet medical need."

Clinical • P1/2 data • P2 data • Brain Cancer • CNS Disorders • Cognitive Disorders • Developmental Disorders • Glioblastoma • Solid Tumor

Assessment of rhenium-186 obisbemeda (186RNL) therapy for recurrent glioblastoma (rGBM) using MRI and SPECT imaging biomarkers (SNO 2025) - "These findings support the effectiveness of combining MRI and SPECT imaging to access 186RNL delivery and its therapeutic outcomes in rGBM. Imaging biomarkers such as TCR, MTT and TTP may serve as useful predictors of treatment response and clinical outcomes and could guide future patient-specific treatment planning."

Biomarker • Brain Cancer • Glioblastoma • Solid Tumor

Phase 1 Multicenter Study of Multiple Doses of Rhenium (186Re) Obisbemeda (Reyobiq) for Leptomeningeal Metastases: Rationale, Design, and Preliminary Cohort 1 Data (SNO 2025) - P1 | "Cohort 1 data, including safety and preliminary efficacy, will be presented. This study builds on single-dose findings, aiming to optimize dosing regimens to improve outcomes for LM patients, addressing an unmet clinical need with a novel radiotherapeutic approach."

Clinical • P1 data • Hematological Disorders • Solid Tumor • Thrombocytopenia

Plus Therapeutics to Present ReSPECT Phase 1 Dose Escalation Study Results for Leptomeningeal Metastases at the 2025 San Antonio Breast Cancer Symposium (GlobeNewswire) - "Study findings to be featured in a poster spotlight presentation."

P1 data • Brain Cancer • CNS Tumor

Phase 1 Multicenter Study of Multiple Doses of Rhenium (186Re) Obisbemeda (Reyobiq) for Leptomeningeal Metastases: Rationale, Design, and Preliminary Cohort 1 Data (WFNOS 2025) - P1 | "Cohort 1 data, including safety and preliminary efficacy, will be presented. This study builds on single-dose findings, aiming to optimize dosing regimens to improve outcomes for LM patients, addressing an unmet clinical need with a novel radiotherapeutic approach."

Clinical • P1 data • Hematological Disorders • Solid Tumor • Thrombocytopenia

Assessment of rhenium-186 obisbemeda (186RNL) therapy for recurrent glioblastoma (rGBM) using MRI and SPECT imaging biomarkers (WFNOS 2025) - "These findings support the effectiveness of combining MRI and SPECT imaging to access 186RNL delivery and its therapeutic outcomes in rGBM. Imaging biomarkers such as TCR, MTT and TTP may serve as useful predictors of treatment response and clinical outcomes and could guide future patient-specific treatment planning."

Biomarker • Brain Cancer • Glioblastoma • Glioma • Solid Tumor

Plus Therapeutics Highlights ReSPECT-LM Clinical Trial Results at 40th SITC Annual Meeting, Melanoma Research Foundation Brain Metastases Summit 4.0 (The Manila Times)

P1 data • Brain Cancer • CNS Tumor

Q3 2025 FINANCIAL RESULTS (GlobeNewswire) - "Recognized $1.4 million in grant revenue in the third quarter of 2025 compared to $1.5 million in the same quarter of 2024, which represents CPRIT’s share of the costs incurred for our REYOBIQ platform advancement for the treatment of patients with LM."

Commercial • Brain Cancer • CNS Tumor

CA2024-LM-001: Multiple Dose Intraventricular Administration of Rhenium-186 NanoLiposome for Leptomeningeal Metastases (clinicaltrials.gov) - P1 | N=24 | Recruiting | Sponsor: Plus Therapeutics

New P1 trial • Oncology • Solid Tumor

Plus Therapeutics Presents ReSPECT-LM Clinical Trial Results for REYOBIQ in Patients with Leptomeningeal Metastases (GlobeNewswire) - "Plus Therapeutics...announces the oral presentation of its ReSPECT-LM clinical trial results and a sponsored educational symposium, at the upcoming SNO/ASCO CNS Metastases Conference on August 14-16, 2025....'At SNO/ASCO this year, our objective is to present the final clinical trial results and proposed clinical development path forward to clinical leaders in Neuro-oncology and further discuss this in our sponsored symposium'....Plus will also host an educational symposium with leading experts titled, 'Reimagining Your Approach to Leptomeningeal Metastases'....The session will focus on the latest advancements in understanding and managing LM, including a deep dive into REYOBIQ and CNSide and their potential roles in both prolonging life and improving the quality of life in patients with LM."

Clinical data • Brain Cancer • CNS Tumor

Determine Maximum Tolerated Dose, Safety, and Tolerability of Rhenium (186Re) in Pediatric Recurrent, Refractory or Progressive Ependymoma and High-Grade Glioma (clinicaltrials.gov) - P1 | N=56 | Not yet recruiting | Sponsor: Plus Therapeutics

New P1 trial • Brain Cancer • Ependymoma • Glioma • High Grade Glioma • Oncology • Pediatrics • Solid Tumor

Plus Therapeutics Announces Initial Patients Successfully Treated in ReSPECT-LM Dose Optimization Trial for REYOBIQ in Leptomeningeal Metastases (GlobeNewswire) - "Plus Therapeutics...has announced the successful treatment of initial patients in its ReSPECT-LM dose optimization trial for REYOBIQ (rhenium Re186 obisbemeda) targeting leptomeningeal metastases (LM). The trial follows promising Phase 1 results where 5 out of 7 patients achieved over 80% reduction in LM tumor cells and survived at least one year post-treatment....The Company anticipates presenting these data and additional information from the completed single-dose escalation trial at the upcoming SNO/ASCO CNS Metastases Conference on August 14-16, 2025, in Baltimore, MD. The company will also request an End of Phase 1 Type B meeting with the FDA to align on the clinical development plan and the design of a potential registrational trial."

FDA event • P1 data • Trial status • CNS Tumor

Plus Therapeutics Announces FDA Clearance of its Investigational New Drug Application using REYOBIQ for the Treatment of Childhood Brain Cancer (GlobeNewswire) - "Plus Therapeutics, Inc...announced that the U.S. Food and Drug Administration (FDA) has cleared its Investigational New Drug (IND) application (No. 168178) for REYOBIQ (Rhenium Re186 Obisbemeda) for the treatment of pediatric patients with supratentorial recurrent, refractory, or progressive high-grade glioma (HGG) and ependymoma. The trial will be referred to as the ReSPECT-PBC trial and is funded by a $3.0M research grant from the U.S. Department of Defense."

Financing • IND • Ependymoma • High Grade Glioma

Plus Therapeutics Reports First Quarter Financial Results and Recent Business Highlights (GlobeNewswire) - "Q1 2025 FINANCIAL RESULTS:...The Company recognized $1.1 million in grant revenue in the first quarter of 2025 compared to $1.7 million in in the first quarter of 2024, which represents CPRIT’s share of the costs incurred for our REYOBIQ platform advancement for the treatment of patients with LM."

Commercial • CNS Tumor

Plus Therapeutics Presents New Data Highlighting Clinical Benefit and Safety of REYOBIQ in the ReSPECT-LM Clinical Trial for Patients with Leptomeningeal Metastases (GlobeNewswire) - P1 | N=18 | ReSPECT-LM (NCT05034497) | Sponsor: Plus Therapeutics | "The abstract...highlights additional data from the Company’s completed Phase 1 ReSPECT-LM dose escalation trial demonstrating a dose dependent increase in the average absorbed dose to the cranial and spinal subarachnoid space reaching 253Gy in Cohort 5. Neuroimaging response data was available for 16 patients as of the data cutoff with five of those (31%) showing a partial response. An additional seven patients showed stable disease by neuroimaging through day 112 for a Clinical Benefit Rate (complete response + partial response + stable disease) of 75%. Additionally, a clinical response based on the physician evaluation showed a decrease in disease findings in two of 14 evaluable patients (14%) and 10 patients showed stable findings through day 112 for an 86% Clinical Benefit Rate."

P1 data • CNS Tumor

Safety & Efficacy/Tolerability of Rhenium-186 NanoLiposomes (186RNL) for Patients Who Received a Prior 186RNL Treatment (clinicaltrials.gov) - P1 | N=40 | Recruiting | Sponsor: Plus Therapeutics | Not yet recruiting ➔ Recruiting

Enrollment open • Brain Cancer • CNS Tumor • Glioma • Oncology • Solid Tumor

ReSPECT-GBM: Maximum Tolerated Dose, Safety, and Efficacy of Rhenium Nanoliposomes in Recurrent Glioma (ReSPECT) (clinicaltrials.gov) - P1/2 | N=55 | Recruiting | Sponsor: Plus Therapeutics | Trial completion date: Jan 2025 ➔ Dec 2025 | Trial primary completion date: Jan 2025 ➔ Dec 2025

Trial completion date • Trial primary completion date • Brain Cancer • CNS Tumor • Glioma • Oncology • Solid Tumor

Plus Therapeutics Reports Fourth Quarter and Full Year 2024 Financial Results and Recent Business Highlights (GlobeNewswire) - "UPCOMING EXPECTED EVENTS AND MILESTONES:...(i) Complete enrollment of Cohort 1 in the ReSPECT-LM Phase 1 multiple dose administration trial in 2025; (ii) Complete end of Phase 1 meeting with the U.S. FDA for the ReSPECT-LM trial and determine next clinical steps in 2025; (iii) Complete ReSPECT-GBM Phase 2 enrollment in 2025; (iv) Obtain IND approval for the ReSPECT-PBC Phase 1/2 trial of REYOBIQ for pediatric ependymoma and high-grade glioma in H2 2025."

Enrollment status • FDA event • IND • Ependymoma • Glioblastoma • Glioma

ReSPECT-LM: Intraventricular Administration of Rhenium-186 NanoLiposome for Leptomeningeal Metastases (clinicaltrials.gov) - P1 | N=18 | Active, not recruiting | Sponsor: Plus Therapeutics | Recruiting ➔ Active, not recruiting

Enrollment closed • Oncology

Plus Therapeutics Introduces REYOBIQ, FDA-Accepted Proprietary Name for Lead Drug Candidate (GlobeNewswire) - "Plus Therapeutics, Inc...today announces the U.S. Food and Drug Administration (FDA) has conditionally accepted the Company’s new proprietary name, REYOBIQ, for its lead therapeutic candidate. A request for proprietary name review for REYOBIQ must be submitted once the marketing application (NDA) is submitted. All communications regarding the USAN-adopted and INN-recommended rhenium Re186 obisbemeda generic name will now utilize the proprietary name REYOBIQ."

FDA event • CNS Tumor

Convection enhanced delivery of Rhenium (186Re) Obisbemeda (186RNL) in recurrent glioma: a multicenter, single arm, phase 1 clinical trial. (PubMed, Nat Commun) - P1/2 | "For ORR, 57.1% exhibited stable disease (SD), 4.8% partial response, and 38.1% progressive disease. Overall, patients received radiation absorbed doses without significant toxicity higher than possible with external beam radiation therapy (EBRT) and demonstrated mOS beyond standard of care for recurrent glioblastoma (~8 months)."

Journal • P1 data • Brain Cancer • CNS Tumor • Glioblastoma • Glioma • Oncology • Solid Tumor