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A Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of REGN9035 in Healthy Adult Volunteers and Mildly Hypertensive Participants

A Phase 1, Randomized, Double-Blind, Placebo-Controlled, Two-Part, Single Ascending Dose Study to Assess the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of REGN9035 (an Anti-REGN5381 Antibody and Reversal Agent) and REGN5381 (an NPR1 Agonist Antibody) When Administered Alone or in Sequence to Healthy Volunteers and Mildly Hypertensive Subjects

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05291546
Enrollment
93
Registered
2022-03-22
Start date
2022-04-13
Completion date
2024-04-02
Last updated
2024-04-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy Volunteers

Keywords

Healthy Volunteers, Mild Hypertension, High Blood Pressure

Brief summary

The primary objective of the study is to: • Evaluate the safety and tolerability of REGN5381 and REGN9035 administered alone or sequentially. The secondary objectives of the study are to: * Evaluate the ability of single intravenous (IV) doses of REGN9035 (compared to placebo) to reverse the acute hemodynamic effects of REGN5381 * Evaluate the hemodynamic effects of single IV doses of REGN5381 * Evaluate the persistence of the hemodynamic effects of single IV doses of REGN5381 and the reversal of REGN5381 effects by REGN9035 (compared to placebo) * Evaluate the pharmacokinetics of single IV doses of REGN5381 and REGN9035 administered alone or sequentially

Interventions

DRUGREGN9035

Part A: Single dose administered by IV infusion on day 1. Part B: Selected doses administered by IV infusion on day 2 or 22.

Part B: Selected doses administered by IV infusion on day 1.

OTHERPlacebo

Part A: Single dose administered by IV infusion on day1. Part B: Single dose administered by IV infusion on day 1, day 2 and/or day 22.

Sponsors

Regeneron Pharmaceuticals
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 55 Years
Healthy volunteers
Yes

Inclusion criteria

Key Inclusion Criteria: 1. Body mass index (BMI) between 18 and 32 kg/m2, inclusive, at the screening visit. 2. Normal or mildly elevated blood pressure as defined in the protocol. Key

Exclusion criteria

1. History of unexplained syncope or autonomic dysfunction. 2. History of clinically significant cardiovascular, respiratory, hepatic, renal, gastrointestinal, endocrine, hematological, psychiatric, or neurological disease. 3. Protocol-defined risk factors for cardiovascular disease. Note: Other protocol defined inclusion /

Design outcomes

Primary

MeasureTime frame
Incidence and Severity of Treatment Emergent Adverse Events (TEAEs)Up to Day 162

Secondary

MeasureTime frameDescription
Percent change in the mean PR obtained after study drug administrationUp to Day 3
Percent change in the mean SV obtained after study drug administrationUp to Day 3
Concentrations of total REGN9035 and/or total REGN5381Up to Day 162
Absolute change from baseline (post-REGN5381 administration) in the mean SBP obtained after study drug administrationUp to Day 3
Mean systolic blood pressure (SBP) obtained after study drug administrationUp to Day 3Up to 24 hours after study drug administration.
Mean diastolic blood pressure (DBP) obtained after study drug administrationUp to Day 3
Mean arterial pressure (MAP) obtained after study drug administrationUp to Day 3
Mean pulse pressure (PP) obtained after study drug administrationUp to Day 3
Mean pulse rate (PR) obtained after study drug administrationUp to Day 3
Mean stroke volume (SV) obtained after study drug administrationUp to Day 3
Absolute change in the mean SBP obtained after study drug administrationUp to Day 3
Absolute change in the mean DBP obtained after study drug administrationUp to Day 3
Absolute change in the mean MAP obtained after study drug administrationUp to Day 3
Absolute change in the mean PP obtained after study drug administrationUp to Day 3
Absolute change in the mean PR obtained after study drug administrationUp to Day 3
Absolute change in the mean SV obtained after study drug administrationUp to Day 3
Maximum change in the mean SBP obtained after study drug administrationUp to Day 3
Maximum change in the mean DBP obtained after study drug administrationUp to Day 3
Maximum change in the mean MAP obtained after study drug administrationUp to Day 3
Maximum change in the mean PP obtained after study drug administrationUp to Day 3
Maximum change in the mean PR obtained after study drug administrationUp to Day 3
Maximum change in the mean SV obtained after study drug administrationUp to Day 3
Percent change in the mean SBP obtained after study drug administrationUp to Day 3
Percent change in the mean DBP obtained after study drug administrationUp to Day 3
Percent change in the mean MAP obtained after study drug administrationUp to Day 3
Absolute change from baseline (post-REGN5381 administration) in the mean DBP obtained after study drug administrationUp to Day 3
Absolute change from baseline (post-REGN5381 administration) in the mean MAP obtained after study drug administrationUp to Day 3
Absolute change from baseline (post-REGN5381 administration) in the mean PP obtained after study drug administrationUp to Day 3
Absolute change from baseline (post-REGN5381 administration) in the mean PR obtained after study drug administrationUp to Day 3
Absolute change from baseline (post-REGN5381 administration) in the mean SV obtained after study drug administrationUp to Day 3
Maximum change from baseline (post-REGN administration) in the mean SBP obtained after study drug administrationUp to Day 3
Maximum change from baseline (post-REGN administration) in the mean DBP obtained after study drug administrationUp to Day 3
Maximum change from baseline (post-REGN administration) in the mean MAP obtained after study drug administrationUp to Day 3
Maximum change from baseline (post-REGN administration) in the mean PP obtained after study drug administrationUp to Day 3
Maximum change from baseline (post-REN5381 administration) in the mean PR obtained after study drug administrationUp to Day 3
Maximum change from baseline (post-REGN5381 administration) in the mean SV obtained after study drug administrationUp to Day 3
Percent change from baseline (post-REN5381 administration) in the mean SBP obtained after study drug administrationUp to Day 3
Percent change from baseline (post-REN5381 administration) in the mean DBP obtained after study drug administrationUp to Day 3
Percent change from baseline (post-REN5381 administration) in the mean MAP obtained after study drug administrationUp to Day 3
Percent change from baseline (post-REN5381 administration) in the mean PP obtained after study drug administrationUp to Day 3
Percent change from baseline (post-REN5381 administration) in the mean PR obtained after study drug administrationUp to Day 3
Percent change from baseline (post-REN5381 administration) in the mean SV obtained after study drug administrationUp to Day 3
Absolute change from baseline (pre-REGN5381 administration) in the mean SBP obtained after study drug administrationUp to Day 3
Absolute change from baseline (pre-REGN5381 administration) in the mean DBP obtained after study drug administrationUp to Day 3
Absolute change from baseline (pre-REGN5381 administration) in the mean MAP obtained after study drug administrationUp to Day 3
Absolute change from baseline (pre-REGN5381 administration) in the mean PP obtained after study drug administrationUp to Day 3
Absolute change from baseline (pre-REGN5381 administration) in the mean PR obtained after study drug administrationUp to Day 3
Absolute change from baseline (pre-REGN5381 administration) in the mean SV obtained after study drug administrationUp to Day 3
Maximum change from baseline (pre-REGN administration) in the mean SBP obtained after study drug administrationUp to Day 3
Maximum change from baseline (pre-REGN administration) in the mean DBP obtained after study drug administrationUp to Day 3
Maximum change from baseline (pre-REGN administration) in the mean MAP obtained after study drug administrationUp to Day 3
Maximum change from baseline (pre-REGN administration) in the mean PP obtained after study drug administrationUp to Day 3
Maximum change from baseline (pre-REGN administration) in the mean PR obtained after study drug administrationUp to Day 3
Maximum change from baseline (pre-REGN administration) in the mean SV obtained after study drug administrationUp to Day 3
Percent change from baseline (pre-REN5381 administration) in the mean SBP obtained after study drug administrationUp to Day 3
Percent change from baseline (pre-REN5381 administration) in the mean DBP obtained after study drug administrationUp to Day 3
Percent change from baseline (pre-REN5381 administration) in the mean MAP obtained after study drug administrationUp to Day 3
Percent change from baseline (pre-REN5381 administration) in the mean PP obtained after study drug administrationUp to Day 3
Percent change from baseline (pre-REN5381 administration) in the mean PR obtained after study drug administrationUp to Day 3
Percent change from baseline (pre-REN5381 administration) in the mean SV obtained after study drug administrationUp to Day 3
Percentage of participants who return to within 10% of baseline (pre-REGN5381 administration) SBP obtained after study drug administration.Baseline to Day 3
Percentage of participants who return to within 10% of baseline (pre-REGN5381 administration) DBP obtained after study drug administration.Baseline to Day 3
Percentage of participants who return to within 10% of baseline (pre-REGN5381 administration) MAP obtained after study drug administration.Baseline to Day 3
Percentage of participants who return to within 10% of baseline (pre-REGN5381 administration) PP obtained after study drug administration.Baseline to Day 3
Percentage of participants who return to within 10% of baseline (pre-REGN5381 administration) PR obtained after study drug administration.Baseline to Day 3
Percentage of participants who return to within 10% of baseline (pre-REGN5381 administration) SV obtained after study drug administration.Baseline to Day 3
Time to return to within 10% of baseline (pre-REGN5381) SBPUp to approximately Day 162
Time to return to within 10% of baseline (pre-REGN5381) DBPUp to approximately Day 162
Time to return to within 10% of baseline (pre-REGN5381) MAPUp to approximately Day 162
Time to return to within 10% of baseline (pre-REGN5381) PPUp to approximately Day 162
Time to return to within 10% of baseline (pre-REGN5381) PRUp to approximately Day 162
Time to return to within 10% of baseline (pre-REGN5381) SVUp to approximately Day 162
SBPThrough Day 36
DBPThrough Day 36
MAPThrough Day 36
PPThrough Day 36
PRThrough Day 36
Absolute change from baseline in SBPThrough Day 36
Percent change in the mean PP obtained after study drug administrationUp to Day 3
Absolute change from baseline in MAPThrough Day 36
Absolute change from baseline in PPThrough Day 36
Absolute change from baseline in PRThrough Day 36
Percent change from baseline in SBPThrough Day 36
Percent change from baseline in DBPThrough Day 36
Percent change from baseline in MAPThrough Day 36
Percent change from baseline in PPThrough Day 36
Percent change from baseline in PRThrough Day 36
Concentrations of total REGN9035Up to Day 162
Concentrations of total REGN5381 over timeUp to Day 162
Absolute change from baseline in DBPThrough Day 36

Countries

Belgium, Germany

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026