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CyPep-1

Phase 1

Advanced Head and Neck Squamous Cell Carcinoma | Small molecule | Oncology |Merck & Company, Inc.|Last Updated: Nov 28, 2025

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment6
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05383170A Study to Evaluate the Safety and Efficacy of CyPep-1 in Combination With Pembrolizumab for the Treatment of Advanced or Metastatic CancersPHASE1 COMPLETED 6Mar 21, 2023Sep 23, 2024Nov 28, 202525 United States, France +3
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Study Endpoints
Primary Endpoints
Frequency, and Seriousness of TEAEs
For each subject, from the time of signing the ICF until 30 days (90 days for SAEs) after the last dose of study treatment up to a maximum of 18 months.

Number of CyPep-1 related TEAEs per grading.

Incidence of DLTs
Initial 6 weeks of treatment.

Number of DLTs

Secondary Endpoints
PFS Per RECIST v1.1
Up to approximately 18 months
OS Per RECIST v1.1
Up to approximately 18 months
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Study Design & Arms
AllocationNON_RANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Arm A: advanced or metastatic HNSCCEXPERIMENTALThe safety and tolerability of CyPep-1 in combination with pembrolizumab will be evaluated in a cohort of 30 subjects in total with advanced or metastatic HNSCC. CyPep-1 will be administered every 2 weeks (Q2W) and pembrolizumab will be administered following a Q6W schedule as per standard of care (SoC).
Arm B: advanced or metastatic melanomaEXPERIMENTALThe safety and tolerability of CyPep-1 in combination with pembrolizumab will be evaluated in a cohort of 30 subjects in total with advanced or metastatic melanoma. CyPep-1 will be administered every 2 weeks (Q2W) and pembrolizumab will be administered following a Q6W schedule as per standard of care (SoC).
Arm C: advanced or metastatic TNBCEXPERIMENTALThe safety and tolerability of CyPep-1 in combination with pembrolizumab will be evaluated in a cohort of 30 subjects in total with advanced or metastatic TNBC. CyPep-1 will be administered every 2 weeks (Q2W) and pembrolizumab will be administered following a Q6W schedule as per standard of care (SoC).
Interventions
NameTypeDescription
CyPep-1DRUGIntratumoral injection
Pembrolizumab 25 MG/ML [KEYTRUDA®]DRUGIV infusion
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites25

Inclusion Criteria: General Inclusion Criteria 1. Is 18 years of age or older on the day of signing informed consent; 2. Provides written informed consent and is able to comply with study procedures and assessments; 3. Has measurable disease as determined by the Response Evaluation Criteria in Sol...

Countries:United StatesFranceItalyNetherlandsSpain
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