A Phase 1/2 interventional study of Raludotatug Deruxtecan and Carboplatin in Ovarian Cancer Recurrent, sponsored by Merck Sharp & Dohme LLC. Recruiting at 33 sites in 6 countries. Open to female participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-10-06.
Sponsored by Merck Sharp & Dohme LLC · Phase 1/2, Interventional, and Treatment
Researchers are looking for other ways to treat high-grade serous and certain other ovarian cancer. High-grade means the cancer cells grow and spread quickly. Serous means the cancer started in the cells that cover the ovaries, the lining of the belly, or in the fallopian tubes.
Standard treatment (usual treatment) for people with high-grade serous ovarian cancer may include:
Raludotatug deruxtecan (R-DXd) is a study treatment that is an antibody drug conjugate (ADC). An ADC attaches to a protein on cancer cells and delivers treatment to destroy those cells. Researchers want to know if R-DXd is safe to take with other treatments and if people tolerate them together. They also want to learn how many people have the cancer respond (gets smaller or goes away) to the treatments.
This study has 2 parts: Part 1 is a dose escalation phase of R-DXd. Part 2 is the expansion phase and will use the Recommended Phase 2 Dose (RP2D) of R-DXd determined in Part 1.
Merck Sharp & Dohme LLC is the lead sponsor of 2,114 studies on the registry; 133 are open to participants now.
Of its 489 completed or terminated interventional studies of FDA-regulated products, 362 (74%) have results posted.
Counted across the registry records on this site, refreshed daily.
Exclusion Criteria:
Participants receive escalating doses of intravenous (IV) raludotatug deruxtecan (R-DXd) in combination with carboplatin at Dose 1. Participants can receive up to a maximum of six 3-week cycles of carboplatin (approximately 4 months) and will receive raludotatug deruxtecan until disease progression or discontinuation.
Biological: Raludotatug Deruxtecan · Drug: Carboplatin · Drug: Rescue Medication
Participants receive escalating doses of IV R-DXd in combination with paclitaxel. Participants can receive up to a maximum of six 3-week cycles of paclitaxel (approximately 4 months) and will receive R-DXd until disease progression or discontinuation.
Biological: Raludotatug Deruxtecan · Drug: Paclitaxel · Drug: Rescue Medication
Participants receive escalating doses of intravenous (IV) R-DXd in combination with carboplatin at Dose 2. Participants can receive up to a maximum of six 3-week cycles of carboplatin (approximately 4 months) and will receive R-DXd until disease progression or discontinuation.
Biological: Raludotatug Deruxtecan · Drug: Carboplatin · Drug: Rescue Medication
Participants receive escalating doses of IV R-DXd in combination with bevacizumab until disease progression or discontinuation.
Biological: Raludotatug Deruxtecan · Biological: Bevacizumab · Drug: Rescue Medication
Participants with platinum-resistant recurrent ovarian cancer (PRROC) receive recommended Phase 2 dose (RP2D) of IV R-DXd in combination with bevacizumab until disease progression or discontinuation.
Biological: Raludotatug Deruxtecan · Biological: Bevacizumab · Drug: Rescue Medication
Participants receive escalating doses of IV R-DXd in combination with pembrolizumab. Participants can receive up to a maximum of thirty-five 3-week cycles of pembrolizumab (approximately 2 years) and will receive R-DXd until disease progression or discontinuation.
Biological: Raludotatug Deruxtecan · Drug: Rescue Medication · Biological: Pembrolizumab
Participants with platinum-sensitive recurrent ovarian cancer (PSROC) receive IV R-DXd in combination with or without bevacizumab until disease progression or discontinuation.
Biological: Raludotatug Deruxtecan · Biological: Bevacizumab · Drug: Rescue Medication
Participants with PSROC will receive the RP2D of R-DXd in combination with a maximum of 6 cycles of carboplatin with or without bevacizumab, until disease progression or discontinuation.
Biological: Raludotatug Deruxtecan · Drug: Carboplatin · Biological: Bevacizumab · Drug: Rescue Medication
Participants with PSROC will receive the RP2D of R-DXd in combination with a maximum of 6 cycles of paclitaxel with or without bevacizumab, until disease progression or discontinuation.
Biological: Raludotatug Deruxtecan · Drug: Paclitaxel · Biological: Bevacizumab · Drug: Rescue Medication
Participants with PSROC will receive one of 3 regimens of investigator's choice of platinum-based doublet chemotherapy with or without bevacizumab. Platinum-based doublet chemotherapy will be administered for maximum of 8 cycles. Bevacizumab can be administered until disease progression or discontinuation.
Drug: Carboplatin · Drug: Paclitaxel · Biological: Bevacizumab · Drug: Gemcitabine · Drug: Pegylated liposomal doxorubicin
Participants receive escalating doses of IV R-DXd in combination with MK-2010. Participants can receive up to a maximum of thirty-five 3-week cycles of MK-2010 (approximately 2 years) and will receive R-DXd until disease progression or discontinuation.
Biological: Raludotatug Deruxtecan · Drug: Rescue Medication · Drug: MK-2010
Participants will receive carboplatin (Dose 1 or Dose 2), paclitaxel (five 3-week cycles), and pembrolizumab during the induction phase. During the maintenance phase, participants will receive RP2D of IV R-DXd (up to 2 years; participants with PR or SD at 2 years may continue until disease progression) in combination with pembrolizumab (up to thirty-five 3-week cycles).
Biological: Raludotatug Deruxtecan · Drug: Carboplatin · Drug: Paclitaxel · Biological: Pembrolizumab
Participants will receive carboplatin (Dose 1 or Dose 2) and paclitaxel (seven 3-week cycles), followed by standard of care observation.
Drug: Carboplatin · Drug: Paclitaxel
Participants with PSROC will receive RP2D of R-DXd in combination with pembrolizumab (up to thirty-five 3-week cycles) and bevacizumab until progressive disease.
Biological: Raludotatug Deruxtecan · Biological: Bevacizumab · Biological: Pembrolizumab
IV infusion on Day 1 of every 3-week cycle.
Also known as: MK-5909, R-DXd
IV infusion on Day 1 of every 3-week cycle for a maximum of 6 cycles.
IV infusion on Day 1 of every 3-week cycle for a maximum of 6 cycles.
IV infusion on Day 1 of every 3-week cycle.
Also known as: Includes, based on sourcing:, - Avastin®, - Alymsys®, - MVASI®, - Oyavas®, - Zirabev®, - Vegzelma®, - Aybintio®, - Breztri®
Includes 5-HT3 Serotonin Receptor Antagonist, NK-1 receptor antagonist, and corticosteroid, administered per protocol.
IV infusion on Day 1 of every 3-week cycle for a maximum of 35 cycles.
IV injection on days 1 and 8 of each 3-week Cycle
IV injection administered on Day 1 of each 4-week cycle
Also known as: PLD
IV infusion on Day 1 of every 3-week cycle
Part 1: Number of Participants Who Experience a Dose-limiting Toxicity (DLT) Per Common Terminology Criteria for Adverse Events, Version 5.0 (CTCAE v5.0)
DLTs are defined as toxicities during the DLT evaluation period that are assessed by the investigator to be possibly, probably, or definitely related to study treatment and include: Grade 4 thrombocytopenia of any duration or Grade 3 thrombocytopenia lasting ≥7 days; Grade 3 or higher thrombocytopenia associated with clinically significant bleeding; Grade 4 lymphocytopenia lasting ≥14 days; Grade 4 anemia of any duration; any other Grade 4 hematologic toxicity lasting ≥7 days; febrile neutropenia Grade 3 or Grade 4 meeting pre-specifications; pre-specified hepatic organ toxicities; all Grade 3 or higher other nonhematologic toxicities except those pre-specified; other pre-specified nonhematologic toxicities; any delay in treatment with the planned dose of ≥21 days or discontinuation of treatment due to a toxicity during the DLT evaluation period, or Grade 5 toxicity. The number of participants with DLTs will be reported.
Time frame: Up to 21 days
Part 1: Number of Participants with One or More Adverse Events (AEs)
An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. The number of participants with one or more AEs will be reported.
Time frame: Up to approximately 3 years
Part 1: Number of Participants who Discontinue Study Intervention Due to an AE
An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. The number of participants who discontinue study intervention due to an AE will be reported.
Time frame: Up to approximately 3 years
Part 2: Objective Response Rate (ORR)
ORR is defined as the percentage of participants with Complete Response (CR: disappearance of all target lesions) or Partial Response (PR: at least a 30% decrease in the sum of diameters of target lesions) per Response Evaluation Criteria In Solid Tumors Version 1.1 (RECIST 1.1). The percentage of participants who experience CR or PR as assessed by Blinded Independent Central Review (BICR) will be presented.
Time frame: Up to approximately 3 years
Part 2: Progression Free Survival (PFS) - Cohort C-2 Arm 1 and Arm 2
PFS is defined as the time from randomization to the first documented progressive disease (PD) or death due to any cause, whichever occurs first as assessed by Response Criteria in Solid Tumors Version 1.1 (RECIST 1.1). PD is defined as ≥20% increase in the sum of diameters of target lesions. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of ≥5 mm. The appearance of one or more new lesions is also considered PD. PFS as assessed by blinded independent central review (BICR) will be presented.
Time frame: Up to approximately 3 years
Part 1: Objective Response Rate (ORR)
ORR is defined as the percentage of participants who have a confirmed Complete Response (CR: Disappearance of all target lesions) or a Partial Response (PR: at least a 30% decrease in the sum of diameters of target lesions) per Response Evaluation Criteria In Solid Tumours version 1.1 (RECIST 1.1). ORR will be assessed by blinded independent central review (BICR).
Time frame: Up to approximately 3 years
Part 2: Duration of Response (DOR)
For participants who demonstrate a confirmed Complete Response (CR: disappearance of all target lesions) or Partial Response (PR: at least a 30% decrease in the sum of diameters of target lesions) per Response Evaluation Criteria In Solid Tumors Version 1.1 (RECIST 1.1), DOR is defined as the time from first documented evidence of CR or PR until progressive disease (PD) or death. Per RECIST 1.1, PD is defined as at least a 20% increase in the sum of diameters of target lesions. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. The appearance of one or more new lesions is also considered PD. DOR as assessed by Blinded Independent Central Review (BICR) will be presented.
Time frame: Up to approximately 3 years
Part 2: PFS - Cohort A-2 Arm 2 and Arm 3
PFS is defined as the time from randomization to the first documented progressive disease (PD) or death due to any cause, whichever occurs first as assessed by Response Criteria in Solid Tumors Version 1.1 (RECIST 1.1). PD is defined as ≥20% increase in the sum of diameters of target lesions. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of ≥5 mm. The appearance of one or more new lesions is also considered PD. PFS as assessed by blinded independent central review (BICR) will be presented.
Time frame: Up to approximately 3 years
Part 2: Overall Survival (OS)
OS is defined as the time from the first dose of study treatment to death due to any cause.
Time frame: Up to approximately 5 years
Part 2: Number of Participants with One or More AEs
An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. The number of participants who discontinue study intervention due to an AE will be reported.
Time frame: Up to approximately 3 years
Part 2: Number of Participants who Discontinue Study Intervention Due to an AE
An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. The number of participants who discontinue study intervention due to an AE will be reported.
Time frame: Up to approximately 3 years
Plan to share: Yes — https://trialstransparency.msdclinicaltrials.com/pdf/ProcedureAccessClinicalTrialData.pdf
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
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