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NCT05566574 · ClinicalTrials.gov registry record · Phase 1

A Study of RP-3500 in Combination With Standard Radiation Therapy in People With Solid Tumor Cancer

A Phase 1 study of Solid Tumor and Metastatic Cancer, sponsored by Memorial Sloan Kettering Cancer Center.

Active
Registry status
Phase 1
Development phase
49
Enrollment target
7
Study locations

NCT05566574: Active Phase 1 study of Solid Tumor and Metastatic Cancer, sponsored by Memorial Sloan Kettering Cancer Center.

NCT05566574 is a Phase 1 study of Solid Tumor and Metastatic Cancer that is active but no longer recruiting, run by Memorial Sloan Kettering Cancer Center. The registered enrollment target is 49 participants, below the 221-participant average among 196 other Solid Tumor trials with a reported enrollment target (78% lower). The trial reports 7 study locations across 2 states. According to ClinicalTrials.gov, the official US trial registry.

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The verdict

NCT05566574, a Phase 1 study of Solid Tumor and Metastatic Cancer, is active but no longer recruiting, sponsored by Memorial Sloan Kettering Cancer Center.

ACTIVE NOT RECRUITING
Registry status
Phase 1
Development phase
49 participants
Enrollment target
7
Study locations

Study Summary

The purpose of this study is to test the safety of the study drug, RP-3500 when given in combination with palliative external beam radiotherapy (EBRT) to people who have metastatic solid tumor cancer with a mutation of the ATM gene. The study researchers will do tests to find the highest dose of RP3500 that causes few or mild side effects.

Primary Outcome

by assessing the grade and frequency of adverse events and serious adverse events. A dose limiting toxicity (DLT) will be graded according to NCI CTCAE v5.0.

Interventions

  • RADIATION External Beam Radiotherapy (EBRT)
  • DRUG RP-3500

Study Locations (7)

New York

  • Memorial Sloan Kettering Cancer Center at Suffolk-Commack (All Protocol Activities) - Commack
  • Memorial Sloan Kettering Westchester (All Protocol Activities) - Harrison
  • Memorial Sloan Kettering Cancer Center (All Protocol Activities) - New York
  • Memorial Sloan Kettering Nassau (Limited Protocol Activities) - Uniondale

New Jersey

  • Memorial Sloan Kettering Basking Ridge (Limited Protocol Activites) - Basking Ridge
  • Memorial Sloan Kettering Monmouth (All Protocol Activities) - Middletown
  • Memorial Sloan Kettering Bergen (Limited Protocol Activities) - Montvale

Trial Details

FieldValue
Enrollment Target 49 participants
Start Date 2022-09-30
Est. Completion 2026-09-30
Phase Phase 1
Memorial Sloan Kettering Cancer Center

1,884 total trials

What the registry record for NCT05566574 still lists

NCT05566574 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 49 participants, a relatively small participant target, below the 221-participant average among 196 other Solid Tumor trials with a reported enrollment target (78% lower).

The record links to 2 conditions, with Solid Tumor appearing as the primary indexed condition, and to 2 interventions - of which External Beam Radiotherapy (EBRT) is the first listed.

NCT05566574 lists 7 locations in 2 states (New York, New Jersey).

Frequently Asked Questions

What is clinical trial NCT05566574 about?

NCT05566574 is a clinical study titled "A Study of RP-3500 in Combination With Standard Radiation Therapy in People With Solid Tumor Cancer". The purpose of this study is to test the safety of the study drug, RP-3500 when given in combination with palliative external beam radiotherapy (EBRT) to people who have metastatic solid tumor cancer with a mutation of the ATM gene. The study researchers will do tests to find the highest dose of RP3...

What is the current status of trial NCT05566574?

This trial is currently active not recruiting. It is a Phase 1 study. The enrollment target is 49 participants. The study started on 2022-09-30. Estimated completion is 2026-09-30.

What conditions does trial NCT05566574 study?

This clinical trial studies the following conditions: Solid Tumor, Metastatic Cancer.

What interventions are being tested in trial NCT05566574?

The interventions under investigation include: External Beam Radiotherapy (EBRT) (RADIATION), RP-3500 (DRUG).

Who is sponsoring clinical trial NCT05566574?

This trial is sponsored by Memorial Sloan Kettering Cancer Center, which has 1,884 total clinical trials registered on ClinicalTrials.gov.

Where is trial NCT05566574 being conducted?

This trial has 7 study locations across New Jersey, New York. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.

Similar trials for Solid Tumor

Matched on the same primary condition, ranked to surface studies in the same phase first, then by recruiting status, no relevance scoring or editorial curation.

Where NCT05566574's enrollment target sits among peer trials

49 127th of 196 higher than 70 of 196 other Solid Tumor trials

participants (enrollment target), bucketed by value

Each bar is a band; taller bars hold more other Solid Tumor trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source ClinicalTrials.gov registry export · 2026-08-08

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Source: ClinicalTrials.gov NCT05566574, the US trial registry maintained by the National Library of Medicine. NCT05566574 (small enrollment · multi site footprint · active not recruiting) retrieved and formatted by PlainTrial, see methodology.