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R-DXd

Phase 3

Ovarian Cancer | Monoclonal antibody | Oncology |Merck & Company, Inc.|Last Updated: Sep 2, 2026

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Trial Design

RandomizedACTIVE_CONTROLLEDDMC
Total Trials2
Total Enrollment1,448

FDA Designations

No designations recorded

Clinical trial landscape

R-DXd · 4 trials · 6 indications

Phase 3 2Phase 2 2
NCT07743164A Clinical Trial of Raludotatug Deruxtecan (R-DXd) With or Without Bevacizumab in Participants With Ovarian Cancer Who Have Progressed During Treatment With PARP-inhibitors Treatment on First Line Maintenance (MK-5909-008/ENGOT-ov107/GOG-3142 / REJOICE-Ovarian05)Ovarian Cancer
NOT YET_RECRUITING646 Analytics
NCT07776691A Study of Raludotatug Deruxtecan With or Without Bevacizumab as First-Line Maintenance Treatment in Non-HRD-Positive Advanced Ovarian Cancer (MK-5909-006, (ENGOT-ov102/GOG-3141/ REJOICE-Ovarian 04)Ovarian Cancer
NOT YET_RECRUITING802 Analytics
PHASE3NOT YET_RECRUITING
A Clinical Trial of Raludotatug Deruxtecan (R-DXd) With or Without Bevacizumab in Participants With Ovarian Cancer Who Have Progressed During Treatment With PARP-inhibitors Treatment on First Line Maintenance (MK-5909-008/ENGOT-ov107/GOG-3142 / REJOICE-Ovarian05)
Ovarian CancerUnlock trial analytics
PHASE3NOT YET_RECRUITING
A Study of Raludotatug Deruxtecan With or Without Bevacizumab as First-Line Maintenance Treatment in Non-HRD-Positive Advanced Ovarian Cancer (MK-5909-006, (ENGOT-ov102/GOG-3141/ REJOICE-Ovarian 04)
Ovarian CancerUnlock trial analytics

Study Endpoints

Primary Endpoints

Progression-free Survival (PFS)
Up to approximately 3 years

PFS is defined as the time from randomization to the first documented disease progression per Response Criteria in Solid Tumors Version 1.1 (RECIST 1.1) or death due to any cause, whichever occurs first. Disease progression 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 disease progression. PFS as assessed by blinded independent central review (BICR) will be presented.

Overall Survival (OS)
Up to approximately 4 years

OS is defined as the time from randomization to death due to any cause.

Objective Response Rate (ORR)
Up to approximately 81 months

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) as assessed per Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST 1.1). ORR will be assessed by Blinded Independent Central Review (BICR). The percentage of participants who experience CR or PR as assessed by the investigator will be presented.

Number of participants who experience one or more adverse events (AEs)
Up to approximately 81 months

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 experience an AE will be reported.

Number of participants who discontinue study intervention due to an AE
Up to approximately 81 months

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 treatment due to an AE will be reported.

Objective Response Rate (ORR) Based on Blinded Independent Central Review (BICR) Assessment (Part A)
From date of randomization to data cut off, up to 18 months

The ORR was defined as the percentage of participants with confirmed Complete Response (CR) or Partial Response (PR), by BICR assessment based on RECIST version 1.1.

Progression-free Survival (PFS) Based on BICR Assessment (Part B)
From date of randomization to data cut off, up to 26 months

PFS is defined as the time from the date of randomization to the date of disease progression, defined as the first documented radiological progression or death due to any cause, whichever comes first.

Secondary Endpoints

Number of Participants who Experience One or More Adverse Events (AEs)
Up to approximately 3 years
Number of Participants who Discontinue Study Intervention Due to an AE
Up to approximately 3 years
Objective Response Rate (ORR)
Up to approximately 3 years
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Study Design & Arms

AllocationRANDOMIZED
MaskingSINGLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
R-DXd +/- BevacizumabEXPERIMENTALParticipants will receive intravenous (IV) raludotatug deruxtecan (R-DXd) with or without IV bevacizumab for up to 2 years until progressive disease (PD), unacceptable toxicity, or other protocol-specified reason for discontinuation
Standard of CareACTIVE_COMPARATORParticipants receive 6 to 8 cycles of investigator's choice of one of three options of platinum-based chemotherapy with or without IV bevacizumab. Bevacizumab treatment if elected, will continue until PD, unacceptable toxicity, or other protocol specified reason for discontinuation
Arm 1: R-DXd with or without bevacizumabEXPERIMENTALParticipants will receive intravenous (IV) raludotatug deruxtecan (R-DXd)with or without IV bevacizumab for up to 2 years until progressive disease (PD), unacceptable toxicity, or other protocol-specified reason for discontinuation.
Arm 2: Standard of care (bevacizumab or observation only)ACTIVE_COMPARATORParticipants will receive bevacizumab 15 mg/kg IV q3w for up to 22 cycles (each cycle=21 days) until disease progression, prohibitive toxicity, or other protocol-defined reason for discontinuation of study intervention or will be observed and actively followed if not receiving bevacizumab.
Arm 1: Raludotatug deruxtecan (R-DXD)EXPERIMENTALParticipants receive 5.6 mg/kg of R-DXD, every 3 weeks (Q3W) (Day 1 of every 21-day cycle) via intravenous (IV) infusion until progressive disease (PD) or discontinuation.
Arm 2: Infinatamab deruxtecan (I-DXD) High DoseEXPERIMENTALParticipants receive 12 mg/kg of I-DXD, Q3W (Day 1 of every 21-day cycle) via IV infusion until PD or discontinuation.
Arm 3: I-DXD Low DoseEXPERIMENTALParticipants receive 8 mg/kg of I-DXD, Q3W (Day 1 of every 21-day cycle) via IV infusion until PD or discontinuation.
Arm 4: DocetaxelACTIVE_COMPARATORParticipants receive 75 mg/m\^2 of Docetaxel, Q3W (Day 1 of every 21-day cycle) via IV infusion until PD or discontinuation.
Part A: R-DXd 4.8mg/kg Q3WEXPERIMENTALParticipants will be randomized to receive intravenous R-DXd administered at a dose of 4.8 mg/kg every 3 weeks (Q3W).
Part A: R-DXd 5.6 mg/kg Q3WEXPERIMENTALParticipants will be randomized to receive intravenous R-DXd administered at a dose of 5.6 mg/kg every 3 weeks (Q3W).
Part A: R-DXd 6.4 mg/kg Q3WEXPERIMENTALParticipants will be randomized to receive intravenous R-DXd administered at a dose of 6.4 mg/kg every 3 weeks (Q3W).
Part B: R-DXd RP3D Q3WEXPERIMENTALParticipants will be randomized to receive intravenous R-DXd administered at the Recommended Phase 3 Dose (RP3D) every 3 weeks (Q3W).
Part B: Investigator's ChoiceACTIVE_COMPARATORParticipants will be randomized to receive intravenous treatment with investigator's choice of paclitaxel, pegylated liposomal doxorubicin (PLD), or topotecan.

Interventions

NameTypeDescription
R-DXdBIOLOGICALR-DXd alone or in combination with bevacizumab administered via IV infusion
BevacizumabDRUGBevacizumab 10 or 15 mg/kg administered via IV infusion on day 1 q3w
CarboplatinDRUGCarboplatin area under the curve (AUC) 5 mg/mL\*min or AUC 4 mg/mL\*min administered on day 1 q3w for a maximum of 8 cycles
PaclitaxelDRUGPaclitaxel 175 mg/m\^2 administered via IV infusion on day 1 q3w for a maximum of 8 cycles
GemcitabineDRUGGemcitabine 1000 mg/mL administered via IV infusion on day 1 and day 8 of each 3-week cycle for a maximum of 8 cycles
Pegylated liposomal doxorubicin (PLD)DRUGPLD 30 mg/m\^2 administered via IV infusion on day 1 of each 4-week cycles for a maximum of 8 cycles
I-DXDBIOLOGICALIV Infusion
DocetaxelDRUGIV Infusion
Rescue MedicationsDRUGParticipants receive rescue medications consisting of a combination regimen to include corticosteroids with a 5-hydroxytryptamine subtype 3 receptor antagonist and/or a neurokinin-1 receptor antagonist, all per approved product label and following institutional standards or local guidelines.
Rescue MedicationDRUGParticipants are premedicated with corticosteroids per approved product label and following institutional standards or local guidelines.
TopotecanDRUGTopotecan will be administered as an IV infusion
PLDDRUGPLD will be administered as an IV infusion
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Eligibility Criteria

Age Range18 Years to N/A
SexFEMALE
Healthy VolunteersNo

The main inclusion criteria include but are not limited to the following: * Has a histologically or cytologically documented advanced high-grade serous or high-grade endometrioid epithelial ovarian, primary peritoneal, or fallopian tube cancer. * Has received 1 line of platinum-based therapy with a...

Countries:United StatesChileChinaGermanyGreeceHungaryIsraelItalyPolandSpainTurkey (Türkiye)AustraliaCanadaCzechiaFranceJapanPortugalSouth KoreaTaiwanUnited Kingdom
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Competitive Landscape -Ovarian Cancer 176 trials

Top 20 of 59 competitors

CompanyTickerTrialsLead PhaseDrugs
Merck & Co., Inc.MRK5PHASE3Pembrolizumab, Paclitaxel, Bevacizumab, Docetaxel
AstraZeneca PLCAZN19PHASE3Olaparib
GSK plc Sponsored ADRGSK4PHASE3Niraparib
Eli Lilly and CompanyLLY8PHASE3Sofetabart Mipitecan, Paclitaxel, Topotecan, Gemcitabine, Pegylated liposomal doxorubicin
AbbVie, Inc.ABBV13PHASE3Mirvetuximab soravtansine plus Bevacizumab, Bevacizumab
Bristol-Myers Squibb CompanyBMY4PHASE3Rucaparib, Nivolumab
Genmab A/S Sponsored ADRGMAB5PHASE3Rina-S, Paclitaxel, Topotecan, Pegylated liposomal doxorubicin, Gemcitabine
Pfizer Inc.PFE4PHASE3Avelumab, Lorlatanib, Talazoparib, Pemetrexed, Axitinib
Corcept Therapeutics Incorporated.CORT2PHASE3Nab-paclitaxel/m^2, Relacorilant once daily
Verastem, Inc.VSTM4PHASE3avutometinib, Defactinib, Pegylated liposomal doxorubicin, Paclitaxel, Letrozole
Zentalis Pharmaceuticals, Inc.ZNTL3PHASE3Azenosertib
Imunon, Inc.IMNN3PHASE3IMNN-001, Paclitaxel, Carboplatin, Olaparib, Niraparib
Incyte CorporationINCY2PHASE3INCB123667
Genelux Corp.GNLX1PHASE3olvimulogene nanivacirepvec, Platinum chemotherapy: carboplatin or cisplatin, Non-platinum chemotherapy: Physician's Choice of gemcitabine, taxane or pegylated liposomal doxorubicin, Bevacizumab
Regeneron Pharmaceuticals, Inc.REGN4PHASE2Ubamatamab, Bevacizumab, Cemiplimab, Fianlimab, PLD
Novartis AG Sponsored ADRNVS4PHASE2Dabrafenib, Trametinib
BeOne Medicines Ltd. Sponsored ADRONC2PHASE3Pamiparib
IQVIA Holdings IncIQV1PHASE3Oregovomab, Paclitaxel, Carboplatin
Xencor, Inc.XNCR3PHASE2vudalimab
Exelixis, Inc.EXEL2PHASE2Cabozantinib
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Recent Changes (Last 90 Days)

LOWSep 2, 2026NCT07743164startDate: changed
LOWSep 2, 2026NCT07743164startDate: changed
LOWSep 2, 2026NCT07743164startDate: changed
LOWAug 31, 2026NCT07776691lastUpdatePostDate: changed
LOWAug 31, 2026NCT07776691lastUpdatePostDate: changed
LOWAug 25, 2026NCT06780098lastUpdatePostDate: changed
LOWAug 25, 2026NCT06780098lastUpdatePostDate: changed
LOWAug 20, 2026NCT07776691NEW_TRIAL: changed
LOWAug 20, 2026NCT07776691NEW_TRIAL: changed
LOWAug 11, 2026NCT07743164lastUpdatePostDate: changed
LOWAug 11, 2026NCT07743164lastUpdatePostDate: changed
LOWAug 11, 2026NCT07743164lastUpdatePostDate: changed
LOWAug 3, 2026NCT07743164NEW_TRIAL: changed
LOWAug 3, 2026NCT07743164NEW_TRIAL: changed
LOWJul 10, 2026NCT06780098lastUpdatePostDate: changed
LOWJul 10, 2026NCT06780098lastUpdatePostDate: changed
LOWJul 6, 2026NCT06780098lastUpdatePostDate: changed
LOWJul 6, 2026NCT06780098lastUpdatePostDate: changed

Frequently asked questions about R-DXd

What is R-DXd used for?

R-DXd, also known as raludotatug deruxtecan, is an investigational monoclonal antibody being studied for the treatment of solid cancers, including ovarian cancer, primary peritoneal cancer, fallopian tube cancer, and non-small cell lung cancer. It is currently in Phase 2 clinical development for these indications.

What does R-DXd target?

R-DXd is a monoclonal antibody, but its specific molecular target has not been disclosed in the available information. The drug is being evaluated in clinical trials for its potential efficacy in treating certain solid tumors, including ovarian and lung cancers.

Who makes R-DXd?

R-DXd is being developed by Merck & Company, Inc., a pharmaceutical company traded on the New York Stock Exchange under the ticker symbol MRK. The company is conducting clinical trials to evaluate the drug's safety and efficacy in patients with various solid tumors.

What phase is R-DXd in?

R-DXd is currently in Phase 2 clinical development. It is being studied in two active Phase 2 trials, one for platinum-resistant ovarian cancer and another for previously treated stage IV squamous non-small cell lung cancer. The drug is investigational and has not yet been approved by regulatory authorities.

What clinical trials is R-DXd in?

R-DXd is being evaluated in two active Phase 2 clinical trials: NCT06161025, which is studying the drug in patients with platinum-resistant, high-grade ovarian, primary peritoneal, or fallopian tube cancer, and NCT06780098, which is investigating it in patients with previously treated stage IV squamous non-small cell lung cancer.

Is R-DXd the same as raludotatug deruxtecan?

Yes, R-DXd is the same as raludotatug deruxtecan. The drug is referred to by both names in clinical trial documentation, with R-DXd being the abbreviated form used in study titles and descriptions.