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MDX2301

Phase 1

COVID -19 | Monoclonal antibody | Infectious Disease |Opko Health Inc.|Last Updated: Mar 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_CONTROLLEDBiomarker
Total Trials1
Total Enrollment80
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT07445971A Study Evaluating MDX2301 in Healthy Adults and Adults at Higher Risk for Severe COVID-19.PHASE1 RECRUITING 80Mar 1, 2026Dec 1, 2027Mar 4, 20262 United States
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Study Endpoints
Primary Endpoints
Adverse Events
Baseline until end of study, up to approximately 12 months

Incidence and severity of adverse events (AEs) and serious AEs (SAEs), including changes in clinical laboratory parameters.

Secondary Endpoints
Measure of maximum serum concentration (Cmax) of MDX2301
12 months
Measure of time to maximum concentration (Tmax) of MDX2301
12 months
Measure of terminal half-life (t1/2) of MDX2301
12 months
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelSEQUENTIAL
PurposePREVENTION
Treatment Arms
ArmTypeDescription
Single Dose Healthy Adults MDX2301EXPERIMENTALHealthy Adults will receive a single dose of MDX2301 as intravenous infusion, intramuscular injection, or subcutaneous injection.
Single Dose Healthy Adults PlaceboPLACEBO_COMPARATORHealthy Adults will receive a single dose of placebo as intravenous infusion, intramuscular injection, or subcutaneous injection.
Repeat Dose Healthy Adults MDX2301EXPERIMENTALHealthy Adults will receive a single dose of MDX2301 as intramuscular injection or subcutaneous injection and then receive a repeat dose of MDX2301, 3 months later as intramuscular injection or subcutaneous injection.
Repeat Dose Healthy Adults PlaceboPLACEBO_COMPARATORHealthy Adults will receive a single dose of placebo as intramuscular injection or subcutaneous injection and then receive a repeat dose of placebo 3 months later as intramuscular injection or subcutaneous injection.
Single-Dose Higher Risk Adults MDX2301EXPERIMENTALAdults at higher risk for severe COVID-19 will receive a single dose of MDX2301 as intramuscular injection or subcutaneous injection.
Single-Dose Higher Risk Adults PlaceboPLACEBO_COMPARATORAdults at higher risk for severe COVID-19 will receive a single dose of placebo as intramuscular injection or subcutaneous injection.
Interventions
NameTypeDescription
MDX2301BIOLOGICALMDX2301 as intravenous infusion, intramuscular injection, or subcutaneous injection.
Normal SalineBIOLOGICALPlacebo as intravenous infusion, intramuscular injection, or subcutaneous injection.
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Eligibility Criteria
Age Range18 Years — 64 Years
SexALL
Healthy VolunteersYes
Study Sites2

Inclusion Criteria Healthy Adults 1. Participant is a healthy male or female, 18 to 64 years of age. 2. Participant is in good health in the opinion of the investigator. Adults at Higher Risk for Developing Severe COVID-19: 3. Participant is a male or female, 18 to 64 years of age. 4. Particip...

Countries:United States
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Recent Changes (Last 90 Days)
LOWMay 24, 2026NCT07445971studyFirstPostDate: changed