R-5780-01 In Combination With PD-1 Checkpoint Inhibitors (Checkpoint Protein on Immune Cells Called T Cells) in Patients With Solid Tumors

August 27, 2025 updated by: Rise Therapeutics LLC

A Single and Repeat Dosing and Expansion Study of the Safety, Drug Exposure and Clinical Activity of R-5780 in Combination With a PD-1 (Checkpoint Protein on Immune Cells Called T Cells) Pathway Checkpoint Inhibitor in Patients With Solid Tumors

The goal of this study is determine the safety and tolerability of orally taken probiotic (R-5780) in patients currently on a PD-1 Pathway Checkpoint Inhibitor (checkpoint protein on immune cells called T cells) with Solid Tumors.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Detailed Description

Patients will take an oral dosage of probiotic (R-5780 and provide patient reported overall feeling and physician scored measure of their tumors. Blood and fecal evaluations of inflammation and assessment of probiotic (R-5780) on fecal levels will also be measured.

Study Type

Interventional

Enrollment (Estimated)

33

Phase

  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

  • United States
    • Tennessee
      • Nashville, Tennessee, United States, 37203
        • Recruiting
        • Sarah Cannon Research Institute
        • Principal Investigator:
          • Benjamin Garmezy, MD
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • At least 18 years of age to 80
  • Ability to provide written informed consent
  • Unresectable stage III or stage IV melanoma, basal cell carcinoma, or squamous cell carcinoma as per the American Joint Committee on Cancer 2017 Guidelines (8th Edition) regardless of BRAF mutation status and other solid tumors.
  • Refractory to anti-PD (checkpoint Protein on Immune Cells called T cells)-1/L1 therapy per RECIST v1.1 defined as subject who has disease progression after receiving at least two complete cycles of ICI (immune checkpoint inhibitors) therapy or disease progression 6 months from initiation of ICI (immune checkpoint inhibitors) therapy while still on active therapy.
  • Life expectancy of greater than 3 months
  • Eastern Cooperative Oncology Group (ECOG) performance status of 0, 1 or 2
  • Subjects must have evaluable disease by CT (computer tomography) or MRI (magnet resonance imaging) per RECIST 1.1 criteria or clinically apparent disease that the investigator can follow for response.

Exclusion Criteria:

  • Any serious medical condition or laboratory abnormality or psychiatric condition or any other significant or unstable concurrent medical illness (in the opinion of the Investigator) would preclude protocol adherence or would make the safety of the study drug difficult to assess
  • Treatment with systemic broad-spectrum antibiotics.
  • No active viral infections.
  • Coexisting severe chronic diseases other than cancer (autoimmunity, inflammatory diseases)
  • Secondary gastrointestinal motility disorders
  • History of solid organ transplant or bone marrow transplant
  • Prior CAR-T (chimeric antigen receptor) or allogeneic cellular therapy
  • Ongoing systemic immunosuppressive therapy, with the exclusion of prednisone (10 mg/day)
  • Concurrent therapy with any other investigational agent, vaccine, or device
  • Pregnant or breastfeeding or planning to conceive or father a child during the trial period
  • Subjects with untreated brain metastasis. Treated brain metastasis are permitted if stable
  • More than 4 prior systemic therapies
  • Other cancer medications during treatment period are not permitted
  • Enrollment in other clinical trials.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Other: Open Label
R-5780 Probiotic
Drug: R-5780
Probiotic

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Incidence and severity of adverse events and their relationship to R-5780 (probiotic) administration
Time Frame: Baseline through Week 4
To assess the number of participants with treatment-related adverse events after taking R-5780 (probiotic)
Baseline through Week 4

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Scale (QOLS)
Time Frame: Baseline through End of Study Day 112
Collect how the patient is feeling on each study visit on the Quality of Life Scale of 30 questions. The Quality of Life scores are summed so that a higher score indicates higher quality of life.
Baseline through End of Study Day 112

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Rise Therapeutics LLC

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

August 1, 2025

Primary Completion (Estimated)

April 30, 2027

Study Completion (Estimated)

December 31, 2027

Study Registration Dates

First Submitted

April 29, 2024

First Submitted That Met QC Criteria

May 2, 2024

First Posted (Actual)

May 3, 2024

Study Record Updates

Last Update Posted (Estimated)

September 4, 2025

Last Update Submitted That Met QC Criteria

August 27, 2025

Last Verified

August 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • RISE R-5780-01

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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