ReSPECT™ Clinical Trials
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  • LEPTOMENINGEAL METASTASES (LM)
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You Deserve Every Option.

See if You Qualify for our Leptomeningeal Metastases Clinical Trial


Trial Information

Leptomeningeal Metastases (LM) is sometimes referred to as leptomeningeal cancer, leptomeningeal disease, neoplastic meningitis, or meningeal carcinomatosis. This rare but serious condition happens when cancer cells spread to the membranes surrounding the brain and spinal cord.  Leptomeningeal Metastases is most commonly found in patients with melanoma, breast, lung, or gastrointestinal cancer. Unfortunately, there are no FDA approved treatments specifically for Leptomeningeal Metastases.

Plus Therapeutics is developing a new targeted radiation therapy, REYOBIQ™ (rhenium Re186 obisbemeda), for central nervous system cancers such as Leptomeningeal Metastases.  In the U.S. ReSPECT-LM clinical trial, doctors will give Leptomeningeal Metastases patients a single dose of REYOBIQ™ through a small catheter placed under the patient’s scalp. This drug will be administered in less than 5 minutes in a hospital setting and the patient will go home the same day.

The ReSPECT-LM clinical trial is funded, in part, by a $17.6 million grant from the Cancer Prevention & Research Institute of Texas, the second largest public funding source for cancer research in the world.

View Trial on ClinicalTrials.gov

View the ReSPECT-LM Trial Guide for Patients

  • Table of Contents
    • Trial Information
    • Patient Eligibility
    • Principal Investigators
    • Trial Locations
    • Next Steps
    • Contact Us
    • News
    • Publications
    • Resources

NATIONAL TRIAL REFERENCE NUMBER

NCT05034497

When speaking with your physician, please have the national trial reference number available.

Patients Treated to Date
View our ReSPECT-LM Trial Quick Overview

Single Group

  • All patients who enroll in the trial will receive medication while on the study.
  • All patients will receive a single dose of REYOBIQ™ (rhenium Re186 obisbemeda).

Phase 1

  • A Phase 1 study is the first step in testing a new treatment in humans. A phase I clinical trial tests the safety, side effects, best dose, and timing of a new treatment. It may also test how the treatment affects the body. The dose is usually increased a little at a time in order to find the highest dose that does not cause harmful side effects. Phase I clinical trials usually include only a small number of patients who have not been helped by other treatments.

Progress

  • Actual Study Start:  December 6, 2021
  • Estimated Phase 1 Completion: 2025 (the date that the last participant in a clinical study is examined or receives an intervention and that data for the primary outcome measure is collected)
  • Estimated Study Completion:  June 30, 2026 (the date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events, that is, the last participant's last visit). 

Plus Therapeutics is evaluating REYOBIQ™ (rhenium Re186 obisbemeda), a novel radiotherapy for patients with Leptomeningeal Metastases in a Phase 1 clinical trial.

Watch now to learn more.

Patient Eligibility

Only a qualified healthcare professional can determine whether or not you are eligible to participate in a clinical trial. However, this information may be beneficial in initiating a conversation with your physician.  Patient reimbursement of up to $599 for time and travel is available.

Age Range

Adults, 18 years and older

Condition

Leptomeningeal Metastases from any solid tumor cancers (i.e. breast, lung, melanoma, gastrointestinal)

Prior Treatment

No prior whole brain or spinal cord radiation therapy

l

Informed Consent

Able to understand the study purposes and risks

Gender

All; Women have negative pregnancy test at screening; Subjects must use effective contraception during study

Additional eligibility criteria may be found on ClinicalTrials.gov

Principal Investigators

There is a physician who is responsible for the scientific and technical direction of the clinical trial at each location.

andrew brenner

Andrew Brenner, M.D., Ph.D.

UT Health San Antonio, Mays Cancer Center
San Antonio, Texas
About Dr. Brenner

Michael Youssef, M.D.

UT Southwestern Medical Center
Dallas, Texas
About Dr. Youssef

Priya Kumthekar, M.D.

Northwestern Memorial Hospital
Chicago, Illinois
About Dr. Kumthekar

Michael Schulder, M.D.

North Shore University Hospital
Manhasset, New York
About Dr. Schulder

Pierre Giglio, M.D.

The Ohio State University Cancer Center
Columbus, Ohio
About Dr. Giglio

Randy S. D’Amico, M.D.

Lenox Hill Hospital
New York, New York
About Dr. D'Amico

Trial Locations

Please visit this website regularly for updates as new locations are added.

UT Health Science Center

San Antonio

North Shore University Hospital

New York

UT Southwestern Medical Center

Dallas

Ohio State University

Columbus

Northwestern Memorial Hospital

Chicago

Lenox Hill Hospital

New York

What Can You Do Next?

Participating in a clinical trial is an important decision. If you believe this clinical trial might be a good fit and are interested in participating, please take the next step to see if you are eligible.

Discuss With Your Physician

Anyone participating in a clinical trial should know as much as possible about what is being studied, what risks are involved and what potential benefits may be gained before deciding to enroll.  If you are interested in participating in a clinical trial, please talk to your physician first.

Print Friendly, PDF & Email

Print, save, or email this page to your physician to discuss at your next visit.

Be sure to have National Trial Reference Number NCT05034497 available.

View the ReSPECT-LM Trial Guide for Patients

Contact A Trial Coordinator

A trial coordinator is a specialized researcher who supports the management and coordination of clinical research studies.  If you are interested in participating in a clinical trial, you may call a trial coordinator directly at one of the trial locations below.

UT Health Science Center
San Antonio

Leticia Velten
 210-450-1921
 velten@uthscsa.edu

North Shore University Hospital
Manhasset

Betsy Moclair
 516-253-7753
 bmoclair@northwell.edu

UT Southwestern Medical Center
Dallas

Tammy Rickfels
 469-852-0719 or 214-645-2148
 tammy.ricklefs@utsouthwestern.edu

Ohio State University Cancer Center
Columbus

Jake Lanning
 614-685-2435
 jake.lanning@osumc.edu

Northwestern Memorial Hospital
Chicago

Laura Sharp
 312-926-5115
 laura.sharp@northwestern.edu

Lenox Hill Hospital
New York

Tamika Wong
 212-434-4836
 twong4@northwell.edu

Contact Us

Request More Information

Emails

11 + 14 =

News

April 15, 2025
 
Plus Therapeutics Presents New Data Highlighting Clinical Benefit and Safety of REYOBIQ in the ReSPECT-LM Clinical Trial for Patients with Leptomeningeal Metastases
 
March 20, 2025
 
Plus Therapeutics Introduces REYOBIQ™, FDA-Accepted Proprietary Name for Lead Drug Candidate
 
March 6, 2025
 
Plus Therapeutics Granted U.S. FDA Orphan Drug Designation for Rhenium (186Re) Obisbemeda for the Treatment of Leptomeningeal Metastases in Patients with Lung Cancer
 
February 26, 2025
 
Plus Therapeutics Advances Lead Drug Rhenium (186Re) Obisbemeda for Patients with Leptomeningeal Metastases
 
February 18, 2025
 
Plus Therapeutics Secures $5.7 Million Financing to Support Leptomeningeal Metastases Program
 
December 17, 2024
 
Plus Therapeutics Presents Positive ReSPECT-LM Phase 1 Interim Data for Breast Cancer Patients with Leptomeningeal Metastases at the 2024 San Antonio Breast Cancer Symposium
 
December 4, 2024
 
Plus Therapeutics to Showcase ReSPECT-LM Phase 1 Interim Data for Leptomeningeal Metastases at the 2024 San Antonio Breast Cancer Symposium
 
December 3, 2024
 
Plus Therapeutics Expands Strategic Agreement with Telix IsoTherapeutics Group for Rhenium-186 Radioisotope Supply
 
November 25, 2024
 
Plus Therapeutics Presents Positive ReSPECT-LM Phase 1 Interim Data for Leptomeningeal Metastases at the 2024 SNO Annual Conference
 
November 6, 2024
 
Plus Therapeutics and SpectronRx Announce Radiotherapeutic Manufacturing Partnership
 
October 29, 2024

Plus Therapeutics Showcases Leptomeningeal Metastases Programs at the 2024 SNO Annual Meeting in Houston, Texas

August 13, 2024

Plus Therapeutics Presents Positive Clinical Trial Results at the 2024 SNO/ASCO CNS Metastases Conference

August 12, 2024

Plus Therapeutics Presents Positive Interim ReSPECT-LM Phase 1 Data for Leptomeningeal Metastases at 2024 SNO/ASCO CNS Metastases Conference

July 25, 2024

Plus Therapeutics Showcases Leptomeningeal Metastases Programs at 2024 SNO/ASCO Conference

July 2, 2024

Plus Therapeutics to Present at the Gordon Research Conference Radionuclide Theranostics for the Management of Cancer

June 7, 2024

Plus Therapeutics Expands Management Team and Reports $3.3M Advance Payment from CPRIT

May 9, 2024

Plus Therapeutics Provides Highlights Regarding Leptomeningeal Metastases Acquisition and Topline Clinical Trial Data on the FORESEE Trial

Publications

Posters

Brenner, Andrew et al. “Rhenium (186Re) Obisbemeda (Rhenium Nanoliposome, 186RNL) for the Treatment of Leptomeningeal Metastases (LM): Update on Phase 1 Dose Escalation Study.” SABCS 2024. 

Brenner, Andrew et al. “Rhenium (186Re) Obisbemeda (Rhenium Nanoliposome, 186RNL) for the Treatment of Leptomeningeal Metastases (LM): Summary of the Phase 1 Dose Escalation Study and Phase 2 Administered Dose Selection .” SNO Annual Meeting 2024. 

Bao, Ande et al. “Radiation Absorbed Dose to Spinal Cord:Therapy of Leptomeningeal Metastasis Using Beta-Emission Radiopharmacauticals.” SNO/ASCO CNS Metastases Conference 2024. 

Brenner, Andrew et al. “Update Report of the ReSPECT Trials: Treatment of Recurrent Glioblastoma and Leptomeningeal Metastases with Rhenium (186Re) Obisbemeda.” NMN Precision Medicine Symposium 2024. 

Brenner, Andrew et al. “Rhenium (186Re) Obisbemeda (186RNL) in Leptomeningeal Metastases Phase 1 Dose Escalation Trial: Update of Initial Safety and Feasibility.” NCCN Annual 2024. 

Brenner, Andrew et al. “Rhenium (186Re) Obisbemeda (186RNL) in Leptomeningeal Metastases Phase 1 Dose Escalation Trial: Initial Safety and Feasibility.” SNO Annual Meeting 2023. 

Brenner, Andrew et al. “Phase 1A of the ReSPECT-LM Trial: Rhenium (186Re) Obisbemeda (186RNL) in Leptomeningeal Metastases (LM).” Cancer Prevention & Research Institute of Texas (CPRIT) Innovations 2023.

Brenner, Andrew et al. “Preliminary Clinical Data in the Phase 1/2a Dose Escalation Trial of Rhenium (186Re) Obisbemeda (186RNL) in Leptomeningeal Metastases (LM): The ReSPECT-LM Trial.” SNO/ASCO CNS Cancer Conference 2023.

LaFrance, Norman et al. “Preclinical and Preliminary Clinical Data in the Phase 1/2a Dose Escalation Trial of 186RNL (Rhenium-186 Nanoliposome) (186Re) Obisbemeda in Leptomeningeal Metastases (LM): The ReSPECTTM-LM Trial.” SNMMI Annual Meeting 2023.

Presentations

Novel Targeted Radiotherapies to Manage Leptomeningeal Metastases, SNO Annual ISS Symposium, November 23, 2024

Phase 1 Dose Escalation of Rhenium (186Re) Obisbemeda (Rhenium Nanoliposome, 186RNL) for the Treatment of Leptomeningeal Metastases (LM), SNO/ASCO CNS Metastases Conference Oral Presentation, August 8, 2024

Emerging Novel Diagnostic and Therapeutic Approaches for Leptomeningeal Metastases, SNO/ASCO CNS Metastases Independent Symposium, August 8, 2024

Targeted Radiolabeled Nanoliposomes for Rare CNS Cancers: An Update on the ReSPECT Phase 1/2 Trials, Gordon Research Conference, July 8, 2024

Phase 1A of the ReSPECT-LM Trial: Rhenium (186Re) Obisbemeda (186RNL) in Leptomeningeal Metastases (LM), Cancer Prevention & Research Institute of Texas (CPRIT) Innovations Conference, October 3, 2023

KOL Roundtable on Leptomeningeal Metastases: An Obvious Disease Target for Radiotherapeutic Intervention,  SNO/ASCO CNS Cancer Conference, August 11, 2023

Safety and Feasibility of Rhenium-186 NanoLiposome (186RNL) in Recurrent Glioma: the ReSPECT™ Phase 1/2a Trial, EANM Congress, October 19, 2022

Resources

Note:  all external links

  • American Brain Tumor Association
  • American Cancer Society
  • Brain Tumor Network
  • Dictionary of Cancer Terms
  • End Brain Cancer Initiative
  • MedlinePlus (NIH)
  • National Brain Tumor Society
  • National Cancer Institute
  • National Comprehensive Cancer Network
  • Support Groups Listing
  • The Brain Tumour Charity
  • Trial Connect
  • VirtualTrials.com
  • Voices Against Brain Cancer

Updates

About Radiotherapeutics: Radionuclide-Based Therapies

The Power of Radionuclide-Based Therapies in Modern Cancer Treatment Radionuclide-based therapies represent a rapidly evolving frontier in precision oncology, offering targeted treatment options for a wide range of cancer types. These therapies utilize radionuclides...

read more

About Radiotherapeutics: Advancing Technology

A Novel Radiotherapeutic Platform Targeting Complex Tumors with Precision At Plus Therapeutics, we’re pioneering a next-generation radiotherapeutic platform designed to deliver targeted cancer treatment with high precision and minimal toxicity. Our platform is powered...

read more

REYOBIQ™: The Future of CNS Cancer Care

REYOBIQ™: A Promising Radiotherapeutic Advancing Treatment for Glioblastoma, Leptomeningeal Metastases, and Pediatric Brain Cancers At Plus Therapeutics, we’re advancing the future of cancer care with REYOBIQ™ (rhenium-186 Re obisbemeda), our lead targeted...

read more

Introducing REYOBIQ™

Introducing REYOBIQ™: The FDA-Accepted Proprietary Name for Plus Therapeutics’ Lead Drug Candidate Big News from Plus Therapeutics! The U.S. Food and Drug Administration (FDA) has conditionally accepted the proprietary name REYOBIQ™ (rhenium Re186 obisbemeda) for our...

read more
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Respecttrials
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Copyright © 2025 Plus Therapeutics, Inc. All rights reserved. ReSPECT is a trademark of Plus Therapeutics, Inc. This website is intended for a U.S. audience only.

Contents

  • 1 You Deserve Every Option.
  • 2 See if You Qualify for our Leptomeningeal Metastases Clinical Trial
    • 2.1 Trial Information
    • 2.2 Patient Eligibility
    • 2.3 Principal Investigators
    • 2.4 Trial Locations
    • 2.5 What Can You Do Next?
    • 2.6 Contact A Trial Coordinator
    • 2.7 Contact Us
    • 2.8 Request More Information
    • 2.9 News
    • 2.10 Publications
    • 2.11 Resources
    • 2.12 Updates
    • 2.13 About Radiotherapeutics: Radionuclide-Based Therapies
    • 2.14 About Radiotherapeutics: Advancing Technology
    • 2.15 REYOBIQ™: The Future of CNS Cancer Care
    • 2.16 Introducing REYOBIQ™
    • 2.17 No Results Found
  • Expanded Access Policy
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  • ReSPECT Blog
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