Study of Safety, Tolerability, and Pharmacokinetics of REGN3470-3471-3479 in Healthy Adult Volunteers

Study Overview
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Brief Summary
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This is a Phase 1, randomized, double-blind, placebo-controlled, dose escalation study evaluating the safety, tolerability, pharmacokinetics (PK) and immunogenicity of REGN3470-3471-3479 in healthy adult volunteers.

Official Title
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A Randomized, Double-Blind, Placebo-Controlled, Single Ascending Dose Study Investigating the Safety, Tolerability, and Pharmacokinetics of Intravenously Administered REGN3470-3471-3479 in Healthy Adult Subjects

Conditions
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Healthy Volunteers

Intervention / Treatment
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* Drug: REGN3470-3471-3479
* Drug: Placebo


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Healthy man or woman between the ages of 18 and 60 Body mass index (BMI) between 18 and 30 kg/m2, inclusive Willing and able to comply with clinic visits and study-related procedures Provide signed informed consent Able to understand and complete study-related questionnaires Exclusion Criteria: Use of any medications started within 30 days prior to the screening visit including, prescription medications, nutritional supplements, and over-the-counter medications except for vitamin supplements, and recommended doses of acetaminophen, aspirin or ibuprofen Hospitalization for any reason within 60 days prior to the screening visit History of or positive human immunodeficiency virus (HIV) screen result at the screening visit History of or positive blood test for hepatitis B surface antigen (HBsAg) or hepatitis B core antibody (HBcAb) or hepatitis C virus (HCV) antibody at the screening visit History of drug or alcohol abuse within 1 year prior to screening Participation in any clinical research study evaluating another investigational drug or therapy within 30 days or at least 5 half-lives (whichever is longer), of the investigational drug prior to the screening visit Any history of receiving treatment, vaccine or mAbs against the Ebola virus Pregnant or breast-feeding women Sexually active men* or women of childbearing potential** who are unwilling to practice adequate contraception during the study (adequate contraceptive measures include stable use of oral contraceptives or other prescription pharmaceutical contraceptives for 2 or more menstrual cycles prior to screening; intrauterine device [IUD]; bilateral tubal ligation; vasectomy; condom plus contraceptive sponge, foam, or jelly, or diaphragm plus contraceptive sponge, foam, or jelly). Contraception is not required for men with documented vasectomy. Postmenopausal women must be amenorrheic for at least 12 months in order not to be considered of childbearing potential. A baseline follicle-stimulating hormone (FSH) test will be performed for confirmation of menopausal status. Pregnancy testing and contraception are not required for women with documented hysterectomy or tubal ligation.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 60 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Basic Science
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Triple


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Cohort 1<br>REGN3470-3471-3479 dosing level 1 or placebo | Drug: REGN3470-3471-3479<br> <br> Drug: Placebo<br> <br> |
| Experimental: Cohort 2<br>REGN3470-3471-3479 dosing level 2 or placebo | Drug: REGN3470-3471-3479<br> <br> Drug: Placebo<br> <br> |
| Experimental: Cohort 3<br>REGN3470-3471-3479 dosing level 3 or placebo | Drug: REGN3470-3471-3479<br> <br> Drug: Placebo<br> <br> |
| Experimental: Cohort 4<br>REGN3470-3471-3479 dosing level 4 or placebo | Drug: REGN3470-3471-3479<br> <br> Drug: Placebo<br> <br> |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Incidence and severity of TEAEs through the end of the study visit in subjects treated with REGN3470-3471-3479 in a fixed dose combination |  | From baseline up to day 169 | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Concentration of REGN3479 in serum over time |  | From baseline up to day 169 | 
| Concentration of REGN3471 in serum over time |  | From baseline up to day 169 | 
| Concentration of REGN3470 in serum over time |  | From baseline up to day 169 | 
| The presence or absence of antibodies against REGN3470 over time |  | From baseline up to day 169 | 
| The presence or absence of antibodies against REGN3471 over time |  | From baseline up to day 169 | 
| The presence or absence of antibodies against REGN3479 over time |  | From baseline up to day 169 |