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CDX-622

Phase 1

Healthy Participants | Small molecule | Other |Celldex Therapeutics, Inc.|Last Updated: May 4, 2026

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
RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials1
Total Enrollment85
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06650761A Phase I Study of CDX-622PHASE1 COMPLETED 85Nov 1, 2024Apr 24, 2026May 4, 20261 United States
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Study Endpoints
Primary Endpoints
Safety as assessed by Toxicity Grading Scale for Healthy Adult and Adolescent Volunteers Enrolled in Preventive Vaccine Trials. Infusion reactions will be graded according to Common Terminology Criteria for Adverse Events (CTCAE) v5.0.
Day 1 up to Day 127

To evaluate the safety profile as determined by the incidence of adverse events in single or multiple ascending doses of CDX-622 or placebo comparator in healthy participants.

Secondary Endpoints
CDX-622 serum evaluations over time
Day 1 up to Day 127
CDX-622 biomarker evaluations over time
Day 1 up to Day 127
Measurement of anti-drug antibody development over time
Day 1 up to Day 127
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Study Design & Arms
AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
CDX-622EXPERIMENTALEligible participants will receive doses of CDX-622 by IV or SC
Normal SalinePLACEBO_COMPARATOREligible participants will receive doses of Normal Saline by IV or SC
Interventions
NameTypeDescription
CDX-622DRUGUp to 4 infusions of one of seven dosages of CDX-622 or up to 1 dose by subcutaneous injection of one of three dosages of CDX-622
Normal SalineDRUGUp to 4 infusions or 6 SC injections of normal saline
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Eligibility Criteria
Age Range18 Years — 55 Years
SexALL
Healthy VolunteersYes
Study Sites1

Key Inclusion Criteria: * An informed consent signed and dated by the participant. * Healthy volunteer aged 18-55. * In generally good health and without significant medical conditions based on physical exam, ECG, and laboratory test results. * Body mass index (BMI) ≥ 18 kg/m2 to ≤ 32 kg/m2. * No c...

Countries:United States
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Recent Changes (Last 90 Days)
MEDIUMJun 4, 2026NCT06650761TRIAL_REMOVED: changed
MEDIUMJun 4, 2026NCT06650761TRIAL_REMOVED: changed
MEDIUMJun 4, 2026NCT06650761TRIAL_REMOVED: changed
MEDIUMJun 4, 2026NCT06650761TRIAL_REMOVED: changed
MEDIUMJun 4, 2026NCT06650761TRIAL_REMOVED: changed
HIGHMay 26, 2026NCT06650761Status: ACTIVE_NOT_RECRUITING → COMPLETED
LOWMay 24, 2026NCT06650761studyFirstPostDate: changed