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Terminated Phase 1 Interventional

RMC-5552 Monotherapy in Adult Subjects With Recurrent Glioblastoma

ClinicalTrials.gov ID: NCT05557292

Public ClinicalTrials.gov record NCT05557292. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Sep 3, 2026, 5:08 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

A Phase I/Ib, Open-Label, Dose-Escalation Study of RMC-5552 Monotherapy in Adult Subjects With Recurrent Glioblastoma

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

This phase I/Ib trial tests the side effects, best dose, tolerability, and effectiveness of RMC-5552 in treating patients with glioblastoma that has come back (recurrent). RMC-5552 is a type of medicine called an mechanistic target of rapamycin (mTOR) inhibitor. These types of drugs prevent the formation of a specific group of proteins called mTOR. This protein controls cancer cell growth, and the study doctors believe stopping mTOR from forming may help to kill tumor cells.

Study identification

NCT ID
NCT05557292
Recruitment status
Terminated
Study type
Interventional
Phase
Phase 1
Lead sponsor
Nicholas Butowski
Other
Enrollment
7 participants

Conditions and interventions

Interventions

Drug

Eligibility (public fields only)

Age range
18 Years and older
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Apr 2, 2023
Primary completion
Dec 30, 2025
Completion
Dec 30, 2025
Last update posted
May 5, 2026

2023 – 2025

United States locations

U.S. sites
1
U.S. states
1
U.S. cities
1
Facility City State ZIP Site status
University of California, San Francisco San Francisco California 94143

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT05557292, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted May 5, 2026 · Synced Sep 3, 2026

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Open the official record

The complete protocol, eligibility criteria, and contact information for NCT05557292 live on ClinicalTrials.gov.

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