A Clinical Study of Raludotatug Deruxtecan in People With Ovarian Cancer (MK-5909-003)

NCT ID: NCT06843447

Last Updated: 2025-10-30

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE1/PHASE2

Total Enrollment

280 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-04-15

Study Completion Date

2029-03-27

Brief Summary

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Researchers are looking for other ways to treat relapsed high-grade serous ovarian cancer. Relapsed means the cancer came back after treatment. 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 relapsed high-grade serous ovarian cancer may include:

* Chemotherapy, which is a treatment that uses medicine to destroy cancer cells or stop them from growing
* Targeted therapy, which is a treatment that works to control how specific types of cancer cells grow and spread

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.

Detailed Description

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This study has 2 parts: Part 1 is a dose escalation phase of R-DXd. Part 2 is the efficacy expansion phase and will use the Recommended Phase 2 Dose (RP2D) of R-DXd determined in Part 1.

Conditions

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Ovarian Cancer Recurrent

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

This is an open-label study; therefore, the Sponsor, investigator, and participant will know the intervention administered.

Imaging data will be centrally reviewed by independent radiologist(s) without knowledge of participant dose assignment.

Study Groups

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Cohort A-1 Arm 1 (R-DXd + Carboplatin Dose 1)

Participants receive escalating doses of intravenous (IV) raludotatug deruxtecan 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.

Group Type EXPERIMENTAL

Raludotatug Deruxtecan

Intervention Type BIOLOGICAL

IV infusion on Day 1 of every 3-week cycle.

Carboplatin

Intervention Type DRUG

IV infusion on Day 1 of every 3-week cycle for a maximum of 6 cycles.

Rescue Medication

Intervention Type DRUG

Includes 5-HT3 Serotonin Receptor Antagonist, NK-1 receptor antagonist, and corticosteroid, administered per protocol.

Cohort A-1 Arm 2 (R-DXd + Paclitaxel)

Participants receive escalating doses of IV raludotatug deruxtecan in combination with paclitaxel. Participants can receive up to a maximum of six 3-week cycles of paclitaxel (approximately 4 months) and will receive raludotatug deruxtecan until disease progression or discontinuation.

Group Type EXPERIMENTAL

Raludotatug Deruxtecan

Intervention Type BIOLOGICAL

IV infusion on Day 1 of every 3-week cycle.

Paclitaxel

Intervention Type DRUG

IV infusion on Day 1 of every 3-week cycle for a maximum of 6 cycles.

Rescue Medication

Intervention Type DRUG

Includes 5-HT3 Serotonin Receptor Antagonist, NK-1 receptor antagonist, and corticosteroid, administered per protocol.

Cohort A-1 Arm 3 (R-DXd + Carboplatin Dose 2)

Participants receive escalating doses of intravenous (IV) raludotatug deruxtecan 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 raludotatug deruxtecan until disease progression or discontinuation.

Group Type EXPERIMENTAL

Raludotatug Deruxtecan

Intervention Type BIOLOGICAL

IV infusion on Day 1 of every 3-week cycle.

Carboplatin

Intervention Type DRUG

IV infusion on Day 1 of every 3-week cycle for a maximum of 6 cycles.

Rescue Medication

Intervention Type DRUG

Includes 5-HT3 Serotonin Receptor Antagonist, NK-1 receptor antagonist, and corticosteroid, administered per protocol.

Cohort B-1 (R-DXd + Bevacizumab)

Participants receive escalating doses of IV raludotatug deruxtecan in combination with bevacizumab until disease progression or discontinuation.

Group Type EXPERIMENTAL

Raludotatug Deruxtecan

Intervention Type BIOLOGICAL

IV infusion on Day 1 of every 3-week cycle.

Bevacizumab

Intervention Type BIOLOGICAL

IV infusion on Day 1 of every 3-week cycle.

Rescue Medication

Intervention Type DRUG

Includes 5-HT3 Serotonin Receptor Antagonist, NK-1 receptor antagonist, and corticosteroid, administered per protocol.

Cohort B-2 (R-DXd Phase 2 + Bevacizumab)

Participants with platinum-resistant recurrent ovarian cancer (PRROC) receive recommended Phase 2 dose (RP2D) of IV raludotatug deruxtecan in combination with bevacizumab until disease progression or discontinuation.

Group Type EXPERIMENTAL

Raludotatug Deruxtecan

Intervention Type BIOLOGICAL

IV infusion on Day 1 of every 3-week cycle.

Bevacizumab

Intervention Type BIOLOGICAL

IV infusion on Day 1 of every 3-week cycle.

Rescue Medication

Intervention Type DRUG

Includes 5-HT3 Serotonin Receptor Antagonist, NK-1 receptor antagonist, and corticosteroid, administered per protocol.

Cohort C-1 (R-DXd + Pembrolizumab)

Participants receive escalating doses of IV raludotatug deruxtecan 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 raludotatug deruxtecan until disease progression or discontinuation.

Group Type EXPERIMENTAL

Raludotatug Deruxtecan

Intervention Type BIOLOGICAL

IV infusion on Day 1 of every 3-week cycle.

Rescue Medication

Intervention Type DRUG

Includes 5-HT3 Serotonin Receptor Antagonist, NK-1 receptor antagonist, and corticosteroid, administered per protocol.

Pembrolizumab

Intervention Type BIOLOGICAL

IV infusion on Day 1 of every 3-week cycle for a maximum of 35 cycles.

Cohort D (R-DXd Phase 2 +/- Bevacizumab)

Participants with platinum-sensitive recurrent ovarian cancer (PSROC) receive RP2D of IV raludotatug deruxtecan in combination with or without bevacizumab until disease progression or discontinuation.

Group Type EXPERIMENTAL

Raludotatug Deruxtecan

Intervention Type BIOLOGICAL

IV infusion on Day 1 of every 3-week cycle.

Bevacizumab

Intervention Type BIOLOGICAL

IV infusion on Day 1 of every 3-week cycle.

Rescue Medication

Intervention Type DRUG

Includes 5-HT3 Serotonin Receptor Antagonist, NK-1 receptor antagonist, and corticosteroid, administered per protocol.

Interventions

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Raludotatug Deruxtecan

IV infusion on Day 1 of every 3-week cycle.

Intervention Type BIOLOGICAL

Carboplatin

IV infusion on Day 1 of every 3-week cycle for a maximum of 6 cycles.

Intervention Type DRUG

Paclitaxel

IV infusion on Day 1 of every 3-week cycle for a maximum of 6 cycles.

Intervention Type DRUG

Bevacizumab

IV infusion on Day 1 of every 3-week cycle.

Intervention Type BIOLOGICAL

Rescue Medication

Includes 5-HT3 Serotonin Receptor Antagonist, NK-1 receptor antagonist, and corticosteroid, administered per protocol.

Intervention Type DRUG

Pembrolizumab

IV infusion on Day 1 of every 3-week cycle for a maximum of 35 cycles.

Intervention Type BIOLOGICAL

Other Intervention Names

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MK-5909, R-DXd Includes, based on sourcing: - Avastin® - Alymsys® - MVASI® - Oyavas® - Zirabev® - Vegzelma® - Aybintio® - Breztri®

Eligibility Criteria

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Inclusion Criteria

* Has pathologically documented diagnosis of high-grade serous epithelial ovarian cancer, primary peritoneal cancer, or fallopian tube cancer
* Has measurable disease per Response Evaluation Criteria In Solid Tumors 1.1
* Participants in Cohort A-1 Arm 2 and Arm 3: Has relapsed disease after 1 to 3 prior lines of therapy and radiographic evidence of disease progression ≥6 months (≥180 days) after the last dose of platinum-based therapy (ie, platinum-sensitive disease).
* Participants in Cohort B-1 and Cohort B-2: Has relapsed disease after 1 to 3 prior lines of therapy and radiographic evidence of disease progression \<6 months (\<180 days) after the last dose of platinum-based therapy (ie, platinum-resistant disease).
* Participants in Cohort B-1 and Cohort B-2: Is a candidate for bevacizumab treatment
* Has provided tumor tissue from a core or excisional biopsy of a tumor lesion not previously irradiated
* Has an Eastern Cooperative Oncology Group performance status of 0 to 1 assessed within 7 days before allocation
* Human immunodeficiency virus (HIV)-infected participants must have well controlled HIV on anti-retroviral therapy
* Participants who are hepatitis B surface antigen positive are eligible if they have received hepatitis B virus (HBV) antiviral therapy for at least 4 weeks, and have undetectable HBV viral load prior to allocation
* Participants with a history of hepatitis C virus (HCV) infection are eligible if HCV viral load is undetectable at screening
* Participants in Cohort C-1 and Cohort D: Has relapsed disease after 1 prior line of therapy, radiographic evidence of disease progression ≥6 months (≥180 days) after the last dose of platinum-based therapy (ie, platinum-sensitive disease) and progressed during prior treatment with PARPi in the first-line setting

Exclusion Criteria

* Has any of the following within 6 months before allocation: cerebrovascular accident, transient ischemic attack, or other arterial thromboembolic event
* Has uncontrolled or significant cardiovascular disease
* Has clinically severe pulmonary compromise resulting from intercurrent pulmonary illnesses including, but not limited to, any underlying pulmonary disorder, and any autoimmune, connective tissue, or inflammatory disorders with potential pulmonary involvement, or prior pneumonectomy
* Has ≥Grade 2 peripheral neuropathy
* Has received prior treatment with cadherin-6-targeted agents
* Has received prior systemic anticancer therapy including investigational agents within 4 weeks or 5 half-lives (whichever is shorter) before allocation
* Has received prior radiotherapy within 2 weeks of the start of study intervention, or has radiation-related toxicities, requiring corticosteroids
* Receives chronic steroid treatment
* Has known additional malignancy that is progressing or has required active treatment within the past 3 years
* Has known active CNS metastases and/or carcinomatous meningitis
* Has history of (noninfectious) pneumonitis/interstitial lung disease (ILD) that required steroids or has current pneumonitis/ILD
* Has active infection requiring systemic therapy
* HIV-infected participants with a history of Kaposi's sarcoma and/or Multicentric Castleman's Disease
Minimum Eligible Age

18 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

No

Sponsors

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Daiichi Sankyo

INDUSTRY

Sponsor Role collaborator

Merck Sharp & Dohme LLC

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Medical Director

Role: STUDY_DIRECTOR

Merck Sharp & Dohme LLC

Locations

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The University of Louisville, James Graham Brown Cancer Center ( Site 0009)

Louisville, Kentucky, United States

Site Status RECRUITING

Memorial Sloan Kettering Cancer Center ( Site 0003)

New York, New York, United States

Site Status RECRUITING

Houston Methodist Hospital ( Site 0010)

Houston, Texas, United States

Site Status RECRUITING

START Mountain Region ( Site 0008)

West Valley City, Utah, United States

Site Status RECRUITING

University of Virginia Health System ( Site 0011)

Charlottesville, Virginia, United States

Site Status RECRUITING

Rambam Health Care Campus ( Site 0202)

Haifa, , Israel

Site Status RECRUITING

Shaare Zedek Medical Center ( Site 0201)

Jerusalem, , Israel

Site Status RECRUITING

Sheba Medical Center ( Site 0200)

Ramat Gan, , Israel

Site Status RECRUITING

Institut Català d'Oncologia - L'Hospitalet ( Site 0302)

L'Hospitalet de Llobregat, Barcelona, Spain

Site Status RECRUITING

Clinica Universidad de Navarra ( Site 0301)

Madrid, Madrid, Comunidad de, Spain

Site Status RECRUITING

Hospital Universitari Vall d'Hebron-Departamento de Oncologia- VHIO ( Site 0300)

Barcelona, , Spain

Site Status RECRUITING

Hospital Universitario Fundación Jiménez Díaz-START Madrid-FJD ( Site 0303)

Madrid, , Spain

Site Status RECRUITING

Hospital Universitario 12 de Octubre ( Site 0304)

Madrid, , Spain

Site Status RECRUITING

Royal Marsden Hospital ( Site 0402)

Fulham, England, United Kingdom

Site Status RECRUITING

The Royal Marsden NHS Foundation Trust. ( Site 0403)

Sutton, England, United Kingdom

Site Status RECRUITING

Barts Health NHS Trust ( Site 0401)

London, London, City of, United Kingdom

Site Status RECRUITING

Countries

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United States Israel Spain United Kingdom

Central Contacts

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Toll Free Number

Role: CONTACT

1-888-577-8839

Facility Contacts

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Study Coordinator

Role: primary

502-562-3429

Study Coordinator

Role: primary

212-639-2000

Study Coordinator

Role: primary

713-441-6616

Study Coordinator

Role: primary

888-577-8839

Study Coordinator

Role: primary

434-924-9333

Study Coordinator

Role: primary

972-4-7776234

Study Coordinator

Role: primary

+972-(0)2-6555424

Study Coordinator

Role: primary

972-3-5304498

Study Coordinator

Role: primary

+34932607744

Study Coordinator

Role: primary

+349135319207513

Study Coordinator

Role: primary

+349325434528607

Study Coordinator

Role: primary

34915504800 x2805

Study Coordinator

Role: primary

+34913908626

Study Coordinator

Role: primary

+442078118084

Study Coordinator

Role: primary

+442078118084

Study Coordinator

Role: primary

020 7377 7000

Related Links

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http://www.merckclinicaltrials.com

Merck Clinical Trials Information

Other Identifiers

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MK-5909-003

Identifier Type: OTHER

Identifier Source: secondary_id

2024-514674-47-00

Identifier Type: REGISTRY

Identifier Source: secondary_id

U1111-1308-2821

Identifier Type: REGISTRY

Identifier Source: secondary_id

REJOICE-Ovarian02

Identifier Type: OTHER

Identifier Source: secondary_id

5909-003

Identifier Type: -

Identifier Source: org_study_id

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