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HSPPC-96

Phase 2

Brain and Central Nervous System Tumors | Monoclonal antibody | Oncology |Agenus Inc.|Last Updated: May 13, 2021

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 Trials2
Total Enrollment166
FDA Designations
No designations recorded
Clinical Trials (2)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT00905060HSPPC-96 Vaccine With Temozolomide in Patients With Newly Diagnosed GBMPHASE2 COMPLETED 70Jun 29, 2009Jun 3, 2014Mar 24, 20219 United States
NCT00293423GP96 Heat Shock Protein-Peptide Complex Vaccine in Treating Patients With Recurrent or Progressive GliomaPHASE1 COMPLETED 96Nov 18, 2005Jan 12, 2013May 13, 20213 United States
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Study Endpoints
Primary Endpoints
Number of Participants With Treatment-Related Adverse Events of Any Grade
Up to 3 years
Median Overall Survival
Up to 3 years

Overall survival is defined as the time from surgical resection to death of any cause.

Maximum Tolerated Dose (MTD) (Phase 1)
Up to 4 weeks

MTD determination will be based on the occurrence of dose-limiting toxicities. The MTD will be 1 dose below the dose that defined the dose-limiting toxicities

Frequency of gp96 Heat Shock Protein-peptide Complex Vaccine (Phase 1)
Up to 6 months

The frequency of dosing of the first 4 injections to be recommended for Phase 2 will be determined by reviewing the reported number of dose-limiting toxicities for weekly or bi-weekly injections.

Number of Participants With Dose Limiting Toxicities (Phase 1)
Up to 4 weeks

Systemic toxicity will be graded according to the National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE), version 4.0. Dose-limiting toxicity is defined as any of the following that are attributable to vaccine therapy: Any grade 3, 4 or 5 toxicity, Any grade \>=2 clinical autoimmunity with the potential to threaten critical organs (including lungs, heart, kidney, bowel, bone marrow, liver or central nervous system (CNS), or eyes), and any removal of a patient from therapy due to toxicity

Median Progression-free Survival at 6 Months (Phase 2)
6 months
Percentage of Participants With Progression-free Survival at 12 Months (Phase 2)
Up to 12 months

Defined as the percentage of participants with confirmed response and who have not progressed from date of surgical resection until death or censored at 12 months

Secondary Endpoints
Median Progression Free Survival (PFS)
Up to 3 years
Median PD-L1 Positivity in Circulating Myeloid Cells
Up to 53 Weeks
Number of Patients With an Immunological Response (Phase 1)
Up to 12 months
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Study Design & Arms
AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Protein Peptide-Complex (HSPPC-96)EXPERIMENTALPatients will receive 4 weekly injections of HSPPC-96 followed by a 5th vaccine injection on the same day of the start of maintenance temozolomide administered 2 weeks (+ 4 days) following vaccine administration #4 on the same day of the start of maintenance temozolomide (Day 36). Monthly vaccine injections will then begin on day 21 (+/- 7 days) of the first 28 day temozolomide cycle (Day 56 of the study), 3 weeks following vaccine administration #5 and will continue every 28 days until depletion of vaccine or progression.
Phase 1: VaccineEXPERIMENTALPatients received 25 micrograms of HSPPC-96 bi-weekly or weekly for the first 4 vaccinations followed by biweekly injections.
Phase 2: VaccineEXPERIMENTALTreatment consisted of 25 mcg of HSPPC-96 weekly for at least 4 weeks, followed by biweekly injections (pending vaccine availability) for up to 52 weeks from the date of surgical resection.
Interventions
NameTypeDescription
HSPPC-96BIOLOGICALAutologous tumor-derived heat shock protein peptide-complex (HSPPC-96) administered at 25 μg per dose injected intradermally once weekly for 4 consecutive weeks and monthly following standard treatment with radiation and temozolomide.
TemozolomideDRUGMaintenance temozolomide treatment is given 2 weeks after administration of the fourth vaccine at an initial dose of 150 mg per square meter (mg/m2) for 5 consecutive days in a 28-day cycle. The dose was increased to 200 mg/m2 for 5 days in subsequent cycles.
Standard Surgical ResectionPROCEDUREPatients will undergo standard surgical resection of intracranial tumor
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites9

Inclusion Criteria: Pre-surgery tissue acquisition Inclusion criteria 1. Age \> or equal to 18 years old 2. Life expectancy of greater than 12 weeks. 3. Able to read and understand the informed consent document; must sign the informed consent 4. Must have suspected diagnosis of Glioblastoma Multif...

Countries:United States
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