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ASP8374

Phase 1

Glioblastoma | Small molecule | Oncology |Regeneron Pharmaceuticals, Inc.|Last Updated: Oct 22, 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
RandomizedCONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment14
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT04826393ASP8374 + Cemiplimab in Recurrent GliomaPHASE1 COMPLETED 14Mar 9, 2022Jan 1, 2024Oct 22, 20254 United States
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Study Endpoints
Primary Endpoints
Maxium Tolerated Dose-MTD/ Phase 2 Recommend Dose-RP2D - Cohort 1
Enrollment up to 2 years

primary endpoint for Cohort 1 will be determination of the MTD/RP2D of ASP8374 when administered with cemiplimab among recurrent malignant glioma participants.

CD8+ TIL Tumor Density-Cohort 2
Enrollment up to 2 years

CD8+ TIL density from tumors obtained from participants randomized to the neoadjuvant study arm (2A) will be compared to tumor CD8+ TIL density obtained from control participants enrolled on Arm 2B who do not receive neoadjuvant therapy.

Secondary Endpoints
Rate of Adverse Events
Enrollment up to 2 years
progression-free survival (PFS)
6 months
overall survival (OS).
12 months
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Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
ASP8374 and Cemiplimab-Cohort 1EXPERIMENTALA 3+3 dose escalation design will be used to determine maximum tolerated dose (MTD) or recommended phase 2 dose (RP2D) of ASP8374 when combined with cemiplimab. Participants will receive ASP8374 and Cemiplimab every 3 weeks for up to 2 years. ASP8374 will be available until October 31, 2022. Subjects may continue treatment with cemiplimab alone after that date.
ASP8374 and Cemiplimab-Cohort 2EXPERIMENTALUpon determination of the MTD/RP2D of ASP8374 plus cemiplimab in Cohort 1, a dose expansion will be performed in which eligible participants who are candidates for surgical resection will enroll to Cohort 2 and will be randomized into one of two treatment groups (2A-2B). Group 2A: IV ASP8374 plus cemiplimab within 14± 5 days prior to surgery at the MTD/RP2D established in Cohort 1. Group 2B: No immune checkpoint therapy prior to surgery. Post-operatively, all Cohort 2 participants will receive ASP8374 plus cemiplimab every 3 weeks administered at the MTD/RP2D established by Cohort 1
Interventions
NameTypeDescription
ASP8374DRUGevery 3 weeks by intravenous infusion
cemiplimabDRUGintravenous infusion
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites4

Inclusion Criteria: * Have histologically confirmed WHO grade IV GBM or its variants. Participants will be eligible if the original histology was low-grade glioma and a subsequent histological diagnosis of GBM is made. Participants with WHO grade III recurrent malignant glioma will be allowed to en...

Countries:United States
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