Adult Solid TumorPhase 1NCT05147272
Study of RP-6306 With Gemcitabine in Advanced Solid Tumors
A Phase 1 study testing RP-6306 (oral PKMYT1 inhibitor) in people with Adult Solid Tumor, run by Debiopharm International SA at 11 sites in 3 countries.
Trial summary
The primary purpose of this study is to assess the safety and tolerability of RP-6306 in combination gemcitabine, in patients with eligible advanced solid tumors, determine the maximum tolerated dose (MTD) of RP-6306 in combination with gemcitabine, identify a recommended phase 2 dose (RP2D) and preferred schedule… Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Adult Solid Tumor
- What is being tested?
- RP-6306 (oral PKMYT1 inhibitor)
- Type of treatment
- Pill or oral medicine, Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 67 participants
- Where
- 11 sitesin 3 countries
- Study dates
- 16 Dec 2021to 28 Aug 2024
- Phase
- Phase 1
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Male or female and ≥18 years-of-age at the time of informed consent.
- ECOG Performance status 0 or 1.
- Locally advanced or metastatic resistant or refractory solid tumors.
- Submission of available tumor tissue at screening or willingness to have a biopsy performed if safe and feasible.
- Measurable disease as per RECIST v1.1.
- Ability to swallow and retain oral medications.
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- 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.
- Life expectancy ≥12 weeks after the start of the treatment
Who cannot join
- 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.
- Known sensitivity to any of the ingredients of RP-6306 or gemcitabine.
- 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 RP-6306 and gemcitabine.
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- Uncontrolled, symptomatic brain metastases.
- Uncontrolled hypertension.
- Moderate or severe hepatic impairment
- Psychological, familial, sociological, or geographical conditions that do not permit compliance with the protocol and/or follow-up procedures outlined in the protocol.
Trial locations and contacts
11 sites in 3 countries.
11 sites in 3 countries
United States9 sites
# 1023, START Midwest
Grand Rapids, Michigan, 49546
# 1017, Mayo Clinic
Jacksonville, Florida, 32224
# 1019, UCLA, Westwood Cancer Center
Los Angeles, California, 90095
# 1008, Columbia University
New York, New York, 10032
# 1004, Memorial Sloan Kettering Cancer Institute
New York, New York, 10065
# 1010, University of Pennsylvania
Philadelphia, Pennsylvania, 19104
# 1018, Mayo Clinic
Phoenix, Arizona, 85054
# 1016, Mayo Clinic
Rochester, Minnesota, 55902
# 1022, Moffitt Cancer Center
Tampa, Florida, 33612
About this study
Official title: Phase 1 Study of the PKMYT1 Inhibitor RP-6306 in Combination With Gemcitabine for the Treatment of Advanced Solid Tumors (MAGNETIC Study)
The primary purpose of this study is to assess the safety and tolerability of RP-6306 in combination gemcitabine, in patients with eligible advanced solid tumors, determine the maximum tolerated dose (MTD) of RP-6306 in combination with gemcitabine, identify a recommended phase 2 dose (RP2D) and preferred schedule, examine preliminary pharmacokinetics (PK) and assess anti-tumor activity.
Read the detailed description
Phase 1, multi-center, open-label, dose-escalation study to:
- Evaluate the safety profile and MTD of RP-6306 with gemcitabine to establish the RP2D and schedule
- Characterize the PK and pharmacodynamics of RP-6306 with gemcitabine
- Assess preliminary anti-tumor activity associated with RP-6306 with gemcitabine
The Sponsor of the study has changed from 'Repare Therapeutics' to 'Debiopharm International SA' in the United States.
- Conditions
- Adult Solid Tumor
- Being tested
- RP-6306 (oral PKMYT1 inhibitor)
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
RP-6306 (oral PKMYT1 inhibitor)Drug
Also called Gemcitabine (IV)
RP-6306 in combination with gemcitabine
| Study group | Role | What they receive |
|---|---|---|
| Phase 1 Dose Escalation | Experimental | Multiple dose levels of RP-6306 and gemcitabine Receives: Drug: RP-6306 (oral PKMYT1 inhibitor) |
What is being measured
The primary outcome is the main question the study is designed to answer.
Number of Patients With of Treatment-related Adverse Event Data Per CTCAE v5.0 Criteria to Determine Safety and Tolerability of RP-6306 in Combination With Gemcitabine.
Incidence of grade 3 and above Treatment Related Emergent Adverse Events (TRAEs)
Measured: Start of treatment to 30 days post last dose. up to 1.5 years
Number of Dose Limiting Toxicities, as Defined Per Protocol, That Occur During the First Cycle (21 Days) of Treatment at Each Dose Level
Evaluation of dose-limiting toxicities (DLTs) at or below a frequency of 25%
Measured: During 21 days from the initiation of the study treatment (C1D1)
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted7 Dec 2021
- Study start16 Dec 2021
- Primary completion28 Aug 2024
- Study completion28 Aug 2024
Why it stopped: Sponsor decided to terminate the study
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Other trials for Adult Solid TumorStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 1
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Sequential
- Model description
- Dose Escalation and Expansion
- Masking
- None (open label)
- Enrolment
- 67 participants (actual)
Sponsor and investigators
- Lead sponsor
- Debiopharm International SA
- Sponsor type
- Industry (pharma, biotech, devices)
- Collaborators
- Repare Therapeutics
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05147272
- Sponsor's protocol ID
- RP-6306-02
- Status last verified
- Nov 2025
- First submitted
- 10 Nov 2021
- Last updated
- 5 Dec 2025
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 5 Dec 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Phase 1 Study of the PKMYT1 Inhibitor RP-6306 in Combination With Gemcitabine for the Treatment of Advanced Solid Tumors (MAGNETIC Study)
- ClinicalTrials.gov ID
- NCT05147272
- Acronym / sponsor ID
- RP-6306-02
- Conditions
- Adult Solid Tumor
- Phase
- Phase 1
- Study type
- Interventional
- Recruitment status
- TerminatedReason stopped: Sponsor decided to terminate the study
- Enrolment
- 67 participants (actual)
- Lead sponsor
- Debiopharm International SAIndustry (pharma, biotech, devices)
- Collaborators
- Repare Therapeutics
- Study start
- 16 Dec 2021 (actual)
- Primary completion
- 28 Aug 2024 (actual)
- Study completion
- 28 Aug 2024 (actual)
- First posted
- 7 Dec 2021 (actual)
- Results
- Posted 16 Oct 2025
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The primary purpose of this study is to assess the safety and tolerability of RP-6306 in combination gemcitabine, in patients with eligible advanced solid tumors, determine the maximum tolerated dose (MTD) of RP-6306 in combination with gemcitabine, identify a recommended phase 2 dose (RP2D) and preferred schedule, examine preliminary pharmacokinetics (PK) and assess anti-tumor activity.
Detailed description
Phase 1, multi-center, open-label, dose-escalation study to:
- Evaluate the safety profile and MTD of RP-6306 with gemcitabine to establish the RP2D and schedule
- Characterize the PK and pharmacodynamics of RP-6306 with gemcitabine
- Assess preliminary anti-tumor activity associated with RP-6306 with gemcitabine
The Sponsor of the study has changed from 'Repare Therapeutics' to 'Debiopharm International SA' in the United States.
Study design
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Sequential
- Masking
- None (open label)
- Number of arms
- 1
- Model description
- Dose Escalation and Expansion
| Arm | Type | Receives |
|---|---|---|
| Phase 1 Dose Escalation | Experimental | Drug: RP-6306 (oral PKMYT1 inhibitor)Multiple dose levels of RP-6306 and gemcitabine |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (10 listed)
- Male or female and ≥18 years-of-age at the time of informed consent.
- ECOG Performance status 0 or 1.
- Locally advanced or metastatic resistant or refractory solid tumors.
- Submission of available tumor tissue at screening or willingness to have a biopsy performed if safe and feasible.
- Measurable disease as per RECIST v1.1.
Key exclusion criteria (10 listed)
- 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.
- Known sensitivity to any of the ingredients of RP-6306 or gemcitabine.
- 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.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| RP-6306 (oral PKMYT1 inhibitor)Also: Gemcitabine (IV)RP-6306 in combination with gemcitabine | Drug | Phase 1 Dose Escalation |
Primary outcome
Number of Patients With of Treatment-related Adverse Event Data Per CTCAE v5.0 Criteria to Determine Safety and Tolerability of RP-6306 in Combination With Gemcitabine.
Time frame: Start of treatment to 30 days post last dose. up to 1.5 years
Incidence of grade 3 and above Treatment Related Emergent Adverse Events (TRAEs)
Number of Dose Limiting Toxicities, as Defined Per Protocol, That Occur During the First Cycle (21 Days) of Treatment at Each Dose Level
Time frame: During 21 days from the initiation of the study treatment (C1D1)
Evaluation of dose-limiting toxicities (DLTs) at or below a frequency of 25%
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 5 Dec 2025.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
11 sites in 3 countries: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 1 study testing RP-6306 (oral PKMYT1 inhibitor) in people with Adult Solid Tumor, run by Debiopharm International SA at 11 sites in 3 countries.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 10 inclusion and 10 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: stopped early, as of the sponsor's last update on 5 Dec 2025. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 11 sites in United States, Canada, United Kingdom. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 16 Oct 2025). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Number of Patients With of Treatment-related Adverse Event Data Per CTCAE v5.0 Criteria to Determine Safety and Tolerability of RP-6306 in Combination With Gemcitabine. (time frame: Start of treatment to 30 days post last dose. up to 1.5 years). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 5 Dec 2025.