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CRB-701

Phase 3

Oropharyngeal Carcinoma (OPC) | Small molecule | Oncology |Corbus Pharmaceuticals Holdings, Inc.|Trials Updated: Oct 8, 2026

CRB-701 development status

Highest phase Phase 3
Registered trials 2 across 1 sponsor since Feb 2024

CRB-701 target and mechanism

Molecular targetNectin-4
Target classProtein
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

RandomizedACTIVE_CONTROLLEDDMC
Total Trials2
Total Enrollment608

FDA Designations

FAST_TRACK

CRB-701 clinical trials

CRB-701 · 2 trials · 2 indications

Phase 3 1Phase 1 1
NCT07768189A Study to Evaluate CRB-701 Compared to Investigator's Choice Therapy in Previously Treated Oropharyngeal Squamous Cell CarcinomaOropharyngeal Carcinoma (OPC)
RECRUITING260 Analytics
PHASE3RECRUITING
A Study to Evaluate CRB-701 Compared to Investigator's Choice Therapy in Previously Treated Oropharyngeal Squamous Cell Carcinoma
Oropharyngeal Carcinoma (OPC)Unlock trial analytics

Study Endpoints

Primary Endpoints

Objective Response Rate (%)
Up to 24 months

Measured using RECIST version 1.1 by Blinded Independed Central Review (BICR)

Overall Survival (months)
Approximately 3 years from randomization

Median time to death from any cause

Part A: To confirm the safety and tolerability and determine MTD and PADR for CRB-701
21 days

Occurrence of Dose Limiting Toxicities as defined in the protocol

Part B & C: To evaluate efficacy in terms of Objective Response Rate (ORR)
Up to 6 months

ORR is the percentage of participants that achieve a response (CR + PR) using RECIST 1.1

Secondary Endpoints

Progression Free Survival (Months)
up to 24 months from randomization
Duration of Response (Months)
Up to approximately 2 years
Change in baseline in EORTC QLQ-C30 functional and symptom scales
up to approximately 2 years
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Study Design & Arms

AllocationRANDOMIZED
MaskingSINGLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
CRB-701EXPERIMENTAL3.6mg/Kg CRB-701 administered intravenously Q3W.
Investigator's Choice monotherapyACTIVE_COMPARATORInvestigator's choice of capecitabine, cetuximab or docetaxel
Part A Dose Escalation - CRB-701 Dose Level 1EXPERIMENTALCRB-701 Dose level 1, intravenous infusion over 30 mins, Dose schedule 1
Part A Dose Escalation - CRB-701 Dose Level 2EXPERIMENTALCRB-701 Dose Level 2, intravenous infusion over 30 mins, Dose schedule 1
Part A Dose Escalation - CRB-701 Dose Level 3EXPERIMENTALCRB-701 Dose Level 3, intravenous infusion over 30 mins, dose schedule 1
Part A Dose Escalation - CRB-701 Dose Level 4EXPERIMENTALCRB-701 Dose Level 4, intravenous infusion over 30 mins, dose schedule 1
Part B Dose Optimization: CRB-701 High doseEXPERIMENTALSelected high dose of CRB-701, intravenous infusion over 30 mins, dose schedule 1
Part B Dose Optimization: CRB-701 low doseEXPERIMENTALSelected Low dose of CRB-701, intravenous infusion over 30 mins
Part C Dose Expansion - Cohort 1EXPERIMENTALRecommended CRB-701 dose and schedule, intravenous infusion over 30 mins followed by infusion with anti-PD-1
Part C Dose Expansion - Cohort 2EXPERIMENTALRecommended CRB-701 dose and schedule, intravenous infusion over 30 mins
Part C Dose Expansion - Cohort 3EXPERIMENTALRecommended CRB-701 dose and schedule, intravenous infusion over 30 mins followed by infusion with anti-PD-1
Part C Dose Expansion - Cohort 4EXPERIMENTALRecommended CRB-701 dose and schedule, intravenous infusion over 30 mins
Part C Dose Expansion - Cohort 5EXPERIMENTALRecommended CRB-701 dose and schedule, intravenous infusion over 30 mins followed by infusion with anti-PD-1
Part B Dose Optimization: CRB-701 high dose combined with anti-PD-1EXPERIMENTALSelected high dose of CRB-701, intravenous infusion over 30 mins followed by infusion with anti-PD-1
Part B Dose Optimization: CRB-701 low dose combined with anti-PD-1EXPERIMENTALSelected low dose of CRB-701, intravenous infusion over 30 mins followed by infusion with anti-PD-1
Part C Dose Expansion - Cohort 6EXPERIMENTALRecommended CRB-701 dose and schedule, intravenous infusion over 30 mins
Part C Dose Expansion - Cohort 7EXPERIMENTALRecommended CRB-701 dose and schedule, intravenous infusion over 30 mins followed by infusion with anti-PD-1

Interventions

NameTypeDescription
CRB-701DRUGCRB-701 3.6mg/Kg administered intravenously every 21 days (Q3W)
capcitabineDRUG1250 mg/m2 twice daily on days 1-14 of each 21-day cycle
Cetuximab (EGFR inhibitor)DRUG400mg/m2 loading dose followed by 250mg/m2 weekly as an IV infusion or 500mg/m2 every 2 weeks.
DocetaxelDRUG75 mg/m2 as an IV infusion on day 1 of each 21-day cycle or 30 mg/m2 weekly to escalate to 40 mg/m2, if tolerated.
Anti-PD-1DRUGcheckpoint inhibitor
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites111

Inclusion Criteria: * Histological and/or cytological confirmed diagnosis of OPSCC arising from tonsils, base of tongue, soft palate and posterior pharyngeal wall, with evidence of metastatic or recurrent disease not amenable to standard therapy with curative intent. * Either second or third-line O...

Countries:United StatesAustriaBelgiumCanadaFranceGermanyHungaryItalyPortugalRomaniaSouth KoreaSpainTaiwanUnited KingdomMoldova
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Recent Changes (Last 90 Days)

LOWOct 8, 2026NCT07768189Status: NOT_YET_RECRUITING → RECRUITING
LOWOct 8, 2026NCT07768189Status: NOT_YET_RECRUITING → RECRUITING
LOWAug 31, 2026NCT07768189lastUpdatePostDate: changed
LOWAug 31, 2026NCT07768189lastUpdatePostDate: changed
LOWAug 26, 2026NCT07768189lastUpdatePostDate: changed
LOWAug 26, 2026NCT07768189lastUpdatePostDate: changed
LOWAug 20, 2026NCT07768189lastUpdatePostDate: changed
LOWAug 20, 2026NCT07768189lastUpdatePostDate: changed
LOWAug 17, 2026NCT07768189NEW_TRIAL: changed
LOWAug 17, 2026NCT07768189NEW_TRIAL: changed
MEDIUMAug 1, 2026NCT06265727Phase: PHASE1/PHASE2 → PHASE1
MEDIUMAug 1, 2026NCT06265727Phase: PHASE1/PHASE2 → PHASE1
MEDIUMAug 1, 2026NCT06265727Phase: PHASE1/PHASE2 → PHASE1

Frequently asked questions about CRB-701

What is CRB-701 used for?

CRB-701 is an investigational cancer therapy being studied in adults with oropharyngeal carcinoma (OPC) and in adults with solid tumors. It is being developed by Corbus Pharmaceuticals Holdings, Inc. (ticker CRBP). The lead program targets previously treated oropharyngeal squamous cell carcinoma, a type of head and neck cancer.

What does CRB-701 target?

CRB-701 targets Nectin-4, a protein expressed on the surface of certain tumor cells. Nectin-4 is a member of the nectin family of cell adhesion molecules and is a recognized target class in oncology drug development. CRB-701 is a small molecule directed at this protein target.

Who makes CRB-701?

CRB-701 is being developed by Corbus Pharmaceuticals Holdings, Inc., which trades under the ticker CRBP. Corbus is the sponsor of the clinical program evaluating CRB-701 in oropharyngeal carcinoma and in adult solid tumors.

What phase is CRB-701 in?

CRB-701 is in Phase 3 clinical development. The Phase 3 trial is recruiting, and an earlier Phase 1/2 study in adult solid tumors is also recruiting. CRB-701 has received Fast Track designation from the FDA. It remains investigational and is not approved for commercial use.

What clinical trials is CRB-701 in?

CRB-701 is being studied in two recruiting trials. NCT07768189 is a Phase 3 study comparing CRB-701 to investigator's choice therapy in previously treated oropharyngeal squamous cell carcinoma, enrolling 260 patients across the United States, Europe, South Korea and Taiwan. NCT06265727 is a Phase 1/2 study in adult solid tumors.

Is CRB-701 randomized and controlled?

Yes. The Phase 3 trial of CRB-701, NCT07768189, is a randomized, active-controlled study comparing CRB-701 against investigator's choice therapy in previously treated oropharyngeal squamous cell carcinoma. It is not double-blinded. The trial is recruiting adults aged 18 years and older, with enrollment planned at 260 participants.