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Imprime PGG

Phase 2

Malignant Neoplasm of Breast | Monoclonal antibody | Oncology |Merck & Company, Inc.|Last Updated: Jun 22, 2023

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
UNCONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment26
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05159778Phase 2 Study of Imprime PGG and Pembrolizumab in Patients With HR+/HER2- Metastatic Breast Cancer (mBCA)PHASE2 COMPLETED 26Nov 9, 2021Apr 12, 2023Jun 22, 202316 United States
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Study Endpoints
Primary Endpoints
Overall response rate (ORR)
Within 24 months of last patient enrolled

ORR by RECIST v1.1 following treatment with Imprime PGG + pembrolizumab

Secondary Endpoints
Median Progression Free Survival (mPFS)
Within 24 months of last patient enrolled
PFS at 6, 9, 12, 18, and 24 months
Within 24 months of last patient enrolled
Median Overall Survival (mOS)
Within 48 months of last patient enrolled
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Study Design & Arms
AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
ExperimentalEXPERIMENTAL -
Interventions
NameTypeDescription
Imprime PGGBIOLOGICALImprime PGG is a soluble, β-1,3/1,6 glucan isolated from the cell wall of a proprietary Saccharomyces cerevisiae yeast strain. Imprime PGG acts as a Pathogen-Associated Molecular Pattern (PAMP). Imprime will be administered at a dose of 4 mg/kg IV over a 2-hour infusion time on Days 1, 8 and 15 of each 3-week treatment cycle.
PembrolizumabBIOLOGICALPembrolizumab is a humanized monoclonal antibody against the programmed death receptor-1 protein. Pembrolizumab will be given at a fixed dose of 200 mg IV over 30 minutes on Day 1 of each 3-week treatment cycle after the Imprime infusion.
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites16

Inclusion Criteria: 1. The patient (or legally acceptable representative if applicable) provides written informed consent for the trial. 2. Be 18 years of age on day of signing informed consent. 3. Have historically confirmed histological diagnosis of metastatic ER/PR+/HER2(-) subtype breast cancer...

Countries:United States
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