Clinical trial Recruiting at 19 sites Phase 1 Interventional Ages 12 and up

Testing RP-6306 alone or with other drugs in patients with advanced solid tumors

Official title: Phase 1/1b Study of the Safety, Pharmacokinetics, Pharmacodynamics and Preliminary Clinical Activity of Lunresertib Alone or in Combination With RP-3500 or Debio 0123 in Patients With Advanced Solid Tumors

Run by Debiopharm International SA · NCT04855656 · Data updated 2026-11-12

This study is testing a new drug called RP-6306, alone and with other medications, to see how safe it is and if it can help people with advanced solid tumors.

Quick facts

PhasePhase 1
Study typeInterventional
Ages12 Years and up
SexAll
Enrollment464 (estimated)
SponsorDebiopharm International SA
Industry-sponsored
Drugs / interventionsChemotherapy, radiation
Locations26 sites (Los Angeles, California and 25 other locations)
StatusRecruiting
StartedApril 30, 2021
Main results expectedDecember 2027
Study endsJune 2028
Registry record updatedOctober 28, 2026
Trial IDNCT04855656 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include males and females aged 12 and older with advanced solid tumors that have specific genetic markers and measurable disease.

Probably not a fit

Patients with solid tumors that do not have the required genetic markers or those who do not meet the performance status criteria may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This Phase 1/1b clinical trial evaluates the safety and tolerability of RP-6306, both alone and in combination with RP-3500 or Debio 0123, in patients with advanced solid tumors. The study aims to determine the maximum tolerated dose (MTD) and assess preliminary anti-tumor activity. It involves a multi-center, open-label, dose-escalation approach to establish the recommended Phase 2 dose and schedule while characterizing the pharmacokinetics and pharmacodynamics of the treatments.

Why it matters

Potential benefit: If successful, this study could provide a new treatment option for patients with advanced solid tumors that are resistant or refractory to existing therapies.

How similar studies have gone: Other studies have shown promise with similar approaches, but this specific combination is being evaluated for the first time.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Male or female and ≥12 years-of-age at the time of informed consent.
* Lansky performance status ≥50% for patients ≤16 years of age, or ECOG score of 0, 1, (or 2 for module 1) for patients \>16 years of age.
* Locally advanced or metastatic resistant or refractory solid tumors.
* Patients \<18 years of age must weigh at least 40 kg.
* Submission of available tumor tissue at screening or willingness to have a biopsy performed if safe and feasible
* Next generation sequencing (NGS) report obtained in a CLIA-certified or equivalent laboratory demonstrating eligible tumor biomarker.
* CCNE1 amplification (non-equivocal) as determined by either a tumor or plasma NGS test, or FISH
* FBXW7 deleterious mutations identified by either a tumor or plasma NGS test
* PPP2R1A deleterious mutations identified by either a tumor or plasma NGS test
* Measurable disease as per RECIST v1.1. For certain modules, patients with prostate cancer or ovarian cancer that have non-measurable disease but have elevated tumor markers (PSA or CA-125, respectively) can also be eligible
* Ability to swallow and retain oral medications.
* Acceptable hematologic and organ function at screening.
* Negative pregnancy test (serum) for women of childbearing potential (WOCBP) at Screening.
* Resolution of all toxicities of prior therapy or surgical procedures.
* Any prior radiation must have been completed at least 7 days prior to the start of study drugs, and patients must have recovered from any acute adverse effects prior to the start of study treatment.

Exclusion Criteria:

* Chemotherapy or small molecule antineoplastic agent given within 21 days or \<5 half-lives, whichever is shorter, prior to first dose of study drug.
* History or current condition, therapy, or laboratory abnormality that might confound the study results or interfere with the patient's participation for the full duration of the study treatment.
* Patients who are pregnant or breastfeeding.
* Life-threatening illness, medical condition, active uncontrolled infection, or organ system dysfunction or other reasons which, in the investigator's opinion, could compromise the participating patient's safety.
* Major surgery within 4 weeks prior to first dose of lunresertib.
* Uncontrolled, symptomatic brain metastases.
* Uncontrolled hypertension.
* Certain prior anti-cancer therapy
* Psychological, familial, sociological, or geographical conditions that do not permit compliance with the protocol and/or follow-up procedures outlined in the protocol.

Where it's running

  • #1025, University of California San Francisco
    San Francisco, California, United States
    Recruiting
  • #1012, Yale
    New Haven, Connecticut, United States
    Recruiting
  • #1017, Mayo Clinic
    Jacksonville, Florida, United States
    Recruiting
  • #1002, Dana Farber Cancer Institute
    Boston, Massachusetts, United States
    Recruiting
  • #1023, START Midwest
    Grand Rapids, Michigan, United States
    Recruiting
  • #1016, Mayo Clinic
    Rochester, Minnesota, United States
    Recruiting
Show 20 more locations
  • #1011, Washington University
    St Louis, Missouri, United States
    Recruiting
  • #1032, Northwell Health Cancer Institute
    New Hyde Park, New York, United States
    Recruiting
  • #1004, Memorial Sloan Kettering Cancer Institute
    New York, New York, United States
    Recruiting
  • #1007, Rhode Island Hospital
    Providence, Rhode Island, United States
    Recruiting
  • #1030, Women & Infants Hospital of Rhode Island
    Providence, Rhode Island, United States
    Recruiting
  • #1001, The University of Texas M.D. Anderson Cancer Center
    Houston, Texas, United States
    Recruiting
  • #1013, The University of Utah
    Salt Lake City, Utah, United States
    Recruiting
  • #1027, University of Virginia
    Charlottesville, Virginia, United States
    Recruiting
  • #2001, Princess Margaret Cancer Centre
    Toronto, Ontario, Canada
    Recruiting
  • #4001, Rigshospitalet - Blegdamsvej
    Copenhagen, Denmark
    Recruiting
  • START Madrid. Hospital Fundación Jimenez Diaz
    Madrid, Spain
    Recruiting
  • Hospital Universitario HM Sanchinarro
    Madrid, Spain
    Recruiting
  • #3003, Sarah Cannon Research Institute
    London, United Kingdom
    Recruiting
  • # 1019, UCLA, Westwood Cancer Center
    Los Angeles, California, United States
    Completed
  • #1008, Columbia University
    New York, New York, United States
    Completed
  • #1010, University of Pennsylvania
    Philadelphia, Pennsylvania, United States
    Completed
  • #2002, The Hospital for Sick Children
    Toronto, Ontario, Canada
    Completed
  • #2003, The Research Institute of the McGill University Health Centre
    Montreal, Quebec, Canada
    Completed
  • Clinica Universidad de Navarra
    Madrid, Spain
    Not yet recruiting
  • Clinica Universidad de Navarra
    Navarra, Spain
    Not yet recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.