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Mocertatug rezetecan

Phase 3

Ovarian Neoplasms | Small molecule | Oncology |GSK plc|Last Updated: Jul 15, 2026

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Trial Design
RandomizedACTIVE_CONTROLLEDDMC
Total Trials3
Total Enrollment1,860
FDA Designations
No designations recorded
Clinical trial landscape

Mocertatug rezetecan · 5 trials · 4 indications

Phase 3 4Phase 1 1
NCT07694427Mo-Rez in First- Line (1L) Maintenance Treatment of Non- Homologous Recombination Deficient Ovarian Cancer (HRd OC) [BEHOLD-Ovarian03]Ovarian Neoplasms
NOT YET_RECRUITING720 Analytics
NCT07684612A Study to Investigate Mocertatug Rezetecan With Bevacizumab Compared With Platinum Doublet With Bevacizumab in Participants With Platinum-sensitive Ovarian Cancer (BEHOLD-Ovarian02)Ovarian Neoplasms
NOT YET_RECRUITING690 Analytics
NCT07286266A Study to Investigate Mocertatug Rezetecan Compared With Standard of Care in Participants With Platinum-resistant Ovarian Cancer (BEHOLD-Ovarian01)Ovarian Neoplasms
RECRUITING450 Analytics
NCT07286331A Study to Investigate Mocertatug Rezetecan Compared With Chemotherapy in Participants With Endometrial Cancer After Platinum-based Chemotherapy and Immunotherapy (BEHOLD-Endometrial01)Neoplasms, Endometrial
RECRUITING600 Analytics
PHASE3NOT YET_RECRUITING
Mo-Rez in First- Line (1L) Maintenance Treatment of Non- Homologous Recombination Deficient Ovarian Cancer (HRd OC) [BEHOLD-Ovarian03]
Ovarian NeoplasmsUnlock trial analytics
PHASE3NOT YET_RECRUITING
A Study to Investigate Mocertatug Rezetecan With Bevacizumab Compared With Platinum Doublet With Bevacizumab in Participants With Platinum-sensitive Ovarian Cancer (BEHOLD-Ovarian02)
Ovarian NeoplasmsUnlock trial analytics
PHASE3RECRUITING
A Study to Investigate Mocertatug Rezetecan Compared With Standard of Care in Participants With Platinum-resistant Ovarian Cancer (BEHOLD-Ovarian01)
Ovarian NeoplasmsUnlock trial analytics
PHASE3RECRUITING
A Study to Investigate Mocertatug Rezetecan Compared With Chemotherapy in Participants With Endometrial Cancer After Platinum-based Chemotherapy and Immunotherapy (BEHOLD-Endometrial01)
Neoplasms, EndometrialUnlock trial analytics
Study Endpoints
Primary Endpoints
Progression Free Survival (PFS)
Up to approximately 34 months

PFS is defined as the time from the date of randomization to the date of first documented Progressive Disease (PD) per Response Evaluation Criteria in Solid Tumors, version 1.1 (RECIST 1.1) by Blinded independent central review (BICR) assessment or death from any cause, whichever occurs first

Progression Free Survival (PFS) by BICR
Up to approximately 191 weeks

PFS is defined as the time from the date of randomization to the date of first documented disease progression (PD) per Response Evaluation Criteria in Solid Tumors, version 1.1 (RECIST 1.1) by Blinded independent central review (BICR) assessment or death from any cause, whichever occurs first.

Overall Survival (OS)
Up to approximately 212 weeks

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

Objective response rate (ORR) by BICR
Up to approximately 97 weeks

ORR is defined as the percentage of participants with best overall confirmed response of either complete response (CR) or partial response (PR) per Response Evaluation Criteria in Solid Tumors, version 1.1 (RECIST 1.1) by Blinded independent central review (BICR)

Part 1: Number of participants with dose limiting toxicity (DLT)
Up to 21 days
Part 2-Confirmed Objective Response Rate (ORR) assessed by investigator
Up to approximately 28 months

ORR is defined as the proportion of participants with at least one confirmed Complete Response (CR) or Partial Response (PR) as defined by Response Evaluation Criteria in Solid Tumors (RECIST 1.1)

Secondary Endpoints
Overall Survival (OS)
Up to approximately 72 months
PFS by investigator assessment
Up to approximately 72 months
Time to first subsequent therapy (TFST)
Up to approximately 72 months
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Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Mocertatug rezetecan +/- BevacizumabEXPERIMENTAL -
Active Observation +/- BevacizumabACTIVE_COMPARATOR -
Mocertatug rezetecan (Mo-Rez) + BevacizumabEXPERIMENTALParticipants will receive Mo-Rez + bevacizumab.
Platinum doublet + BevacizumabACTIVE_COMPARATORParticipants will receive platinum doublet chemotherapy (carboplatin with paclitaxel, gemcitabine, or pegylated liposomal doxorubicin \[PLD\]) and bevacizumab, followed by bevacizumab maintenance therapy.
Mocertatug rezetecanEXPERIMENTALParticipants will receive Mocertatug rezetecan
Standard of careACTIVE_COMPARATORParticipants will receive standard of care chemotherapy (Paclitaxel or Pembrolizumab + paclitaxel ± bevacizumab or PLD or Topotecan or Gemcitabine) as per investigator's choice
Part 1: Dose EscalationEXPERIMENTALParticipants with advanced solid tumors who are refractory or intolerant to established standard therapies
Part 2: Dose ExpansionEXPERIMENTALParticipants with platinum-resistant ovarian cancer (PROC) and endometrial cancer (EC)
Interventions
NameTypeDescription
Mocertatug rezetecanDRUGMocertatug rezetecan will be administered
BevacizumabDRUGBevacizumab will be administered
Mocertatug rezetecan (Mo-Rez)DRUGMocertatug rezetecan will be administered
CarboplatinDRUGCarboplatin will be administered
PaclitaxelDRUGPaclitaxel will be administered
GemcitabineDRUGGemcitabine will be administered
Pegylated liposomal doxorubicin (PLD)DRUGPLD will be administered
TopotecanDRUGTopotecan will be administered
PembrolizumabDRUGPembrolizumab will be administered
DoxorubicinDRUGDoxorubicin will be administered
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Eligibility Criteria
Age Range18 Years to N/A
SexFEMALE
Healthy VolunteersNo

Inclusion Criteria: Participants are eligible to be included in the study only if all of the following criteria apply: * Is at least 18 years of age and the legal age of consent in the jurisdiction in which the study is taking place at the time of signing the Informed Consent Form (ICF). * Has new...

Countries:AustraliaCanadaJapanArgentinaPanamaUnited StatesBelgiumBrazilFinlandFranceItalyNetherlandsSouth KoreaSpainSwedenUnited Kingdom
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Recent Changes (Last 90 Days)
LOWJul 15, 2026NCT07286266primaryCompletionDate: changed
LOWJul 15, 2026NCT07286331lastUpdatePostDate: changed
LOWJul 15, 2026NCT07694427lastUpdatePostDate: changed
LOWJul 15, 2026NCT07684612lastUpdatePostDate: changed
LOWJul 15, 2026NCT07286266primaryCompletionDate: changed
LOWJul 15, 2026NCT07286331lastUpdatePostDate: changed
LOWJul 15, 2026NCT07694427lastUpdatePostDate: changed
LOWJul 15, 2026NCT07684612lastUpdatePostDate: changed
LOWJul 10, 2026NCT07694427NEW_TRIAL: changed
LOWJul 10, 2026NCT07694427NEW_TRIAL: changed
LOWJul 8, 2026NCT07286266Status: NOT_YET_RECRUITING → RECRUITING
LOWJul 8, 2026NCT07286266Status: NOT_YET_RECRUITING → RECRUITING
LOWJul 6, 2026NCT07684612NEW_TRIAL: changed
LOWJul 6, 2026NCT07684612NEW_TRIAL: changed
LOWJul 2, 2026NCT07286331Status: NOT_YET_RECRUITING → RECRUITING
LOWJul 2, 2026NCT07286331Status: NOT_YET_RECRUITING → RECRUITING
LOWJul 2, 2026NCT07286331Status: NOT_YET_RECRUITING → RECRUITING
MEDIUMJun 25, 2026NCT06431594lastUpdatePostDate: changed
MEDIUMJun 25, 2026NCT06431594lastUpdatePostDate: changed
MEDIUMJun 25, 2026NCT06431594lastUpdatePostDate: changed