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PLD Chemotherapy

Phase 1

HER2-negative Breast Cancer | Small molecule | Oncology |Celldex Therapeutics, Inc.|Last Updated: Aug 13, 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 Enrollment30
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05029999CD40 Agonist, Flt3 Ligand, and Chemotherapy in HER2 Negative Breast CancerPHASE1 RECRUITING 30Apr 20, 2022Apr 20, 2026Aug 13, 20257 United States
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Study Endpoints
Primary Endpoints
Safety (tolerability) of the drug combination of CDX-1140, CDX-301 and PLD as measured by the number of participants with Dose Limiting Toxicity (DLT)
Baseline up to 12 months

DLTs are defined as toxicities that meet pre-defined severity criteria including serious Hematologic/Non-Hematologic adverse events (AEs) and AEs at Grade 3 or above; Any ≥ grade 2 eye pain or reduction of visual acuity that does not improved to ≤ grade 1 severity within 2 weeks of initiation of topical therapy or requires systemic treatment. Based on National Cancer Institute Common Terminology Criteria for Adverse Events (NCI-CTCAE) Version 5.0

Secondary Endpoints
Anti-tumor immune response by on-treatment CD8 T cell infiltrate
After Cycle 1 (~4 weeks)
Change in CD8 T cell infiltrate
Baseline, After Cycle 1 (~4 weeks)
Median Progression Free Survival by RECIST v1.1 with administration of CDX-1140, CDX-301, and PLD chemotherapy.
Baseline until date of first observed disease progression or death, assessed up to12 months
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Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Cohort AEXPERIMENTALPLD chemotherapy will be administered 40 mg/m2 as intravenous injection once per cycle until toxicity or progression. CDX-1140 will be administered 1.5mg/kg as intravenous injection once per cycle until toxicity or progression for up to 24 months. CDX-301 will be administered 75µg/kg as subcutaneous injection daily x 5 days cycles 1 and 2 only.
Cohort CEXPERIMENTALPLD chemotherapy will be administered 40 mg/m2 as intravenous injection once per cycle until toxicity or progression. CDX-1140 will be administered 1.5mg/kg as intravenous injection once per cycle starting on cycle 2 until toxicity or progression for up to 24 months. CDX-301 will be administered 75µg/kg as subcutaneous injection daily x 5 days cycles 2 and 3 only.
Interventions
NameTypeDescription
PLD ChemotherapyDRUGPLD chemotherapy will be administered 40 mg/m2 as intravenous injection once per cycle.
CDX-1140DRUGCDX-1140 will be administered 1.5mg/kg as intravenous injection once per cycle.
CDX-301DRUGCDX-301 will be administered 75µg/kg as subcutaneous injection daily x 5 doses per cycle for 2 cycles.
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Eligibility Criteria
Age Range18 Years — 99 Years
SexALL
Healthy VolunteersNo
Study Sites7

Inclusion Criteria: * Unresectable Stage III or Stage IV HER2 negative breast cancer (either triple negative or hormone receptor positive) * Triple negative breast cancer for this study is defined as estrogen receptor \<10%, progesterone receptor \<10% by immunohistochemistry, and HER2- negative...

Countries:United States
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Recent Changes (Last 90 Days)
LOWMay 24, 2026NCT05029999studyFirstPostDate: changed