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Healthy VolunteersPhase 1NCT05291546

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

A Phase 1 study testing REGN9035 and REGN5381 in people with Healthy Volunteers, run by Regeneron Pharmaceuticals at 2 sites in 2 countries.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial 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… Read more about this study

Who is it for?
Ages 18 to 55 yearsHealthy volunteers can take part
Conditions the study is for
Healthy Volunteers
What is being tested?
REGN9035 and REGN5381
Type of treatment
Injection or infusion
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
93 participants
Where
2 sitesin 2 countries
Study dates
13 Apr 2022to 2 Apr 2024
Phase
Phase 1
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 55 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Who may be able to join

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

Who cannot join

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

Trial locations and contacts

2 sites in 2 countries.

2 sites in 2 countries

Belgium1 site
  • Universitair Ziekenhuis Leuven Gasthuisberg Campus

    Leuven, B-3000

Other trials in Belgium

Germany1 site
  • Charite Research Organisation GmbH

    Berlin, 10117

Other trials in Germany

About this study

Official title: 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

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
Being tested
REGN9035, REGN5381, Placebo
Keywords
Healthy Volunteers, Mild Hypertension, High Blood Pressure
Medical subject headings
Hypertension

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • REGN9035Drug

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

  • REGN5381Drug

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

  • PlaceboOther

    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.

Study groups in NCT05291546
Study groupRoleWhat they receive
Part AExperimentalSingle ascending dose (SAD) of REGN9035 or matching placebo given by intravenous (IV) administration.
Receives: Drug: REGN9035; Other: Placebo
Part BExperimentalSelected doses of REGN5381 or matching placebo given by IV administration followed by selected doses of REGN9035 and/or matching placebo via IV infusion
Receives: Drug: REGN9035; Drug: REGN5381; Other: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Incidence and Severity of Treatment Emergent Adverse Events (TEAEs)

    Measured: Up to Day 162

Secondary outcomes (90)
  1. Mean systolic blood pressure (SBP) obtained after study drug administration

    Up to 24 hours after study drug administration.

    Measured: Up to Day 3

  2. Mean diastolic blood pressure (DBP) obtained after study drug administration

    Measured: Up to Day 3

  3. Mean arterial pressure (MAP) obtained after study drug administration

    Measured: Up to Day 3

  4. Mean pulse pressure (PP) obtained after study drug administration

    Measured: Up to Day 3

  5. Mean pulse rate (PR) obtained after study drug administration

    Measured: Up to Day 3

  6. Mean stroke volume (SV) obtained after study drug administration

    Measured: Up to Day 3

  7. Absolute change in the mean SBP obtained after study drug administration

    Measured: Up to Day 3

  8. Absolute change in the mean DBP obtained after study drug administration

    Measured: Up to Day 3

  9. Absolute change in the mean MAP obtained after study drug administration

    Measured: Up to Day 3

  10. Absolute change in the mean PP obtained after study drug administration

    Measured: Up to Day 3

  11. Absolute change in the mean PR obtained after study drug administration

    Measured: Up to Day 3

  12. Absolute change in the mean SV obtained after study drug administration

    Measured: Up to Day 3

  13. Maximum change in the mean SBP obtained after study drug administration

    Measured: Up to Day 3

  14. Maximum change in the mean DBP obtained after study drug administration

    Measured: Up to Day 3

  15. Maximum change in the mean MAP obtained after study drug administration

    Measured: Up to Day 3

  16. Maximum change in the mean PP obtained after study drug administration

    Measured: Up to Day 3

  17. Maximum change in the mean PR obtained after study drug administration

    Measured: Up to Day 3

  18. Maximum change in the mean SV obtained after study drug administration

    Measured: Up to Day 3

  19. Percent change in the mean SBP obtained after study drug administration

    Measured: Up to Day 3

  20. Percent change in the mean DBP obtained after study drug administration

    Measured: Up to Day 3

  21. Percent change in the mean MAP obtained after study drug administration

    Measured: Up to Day 3

  22. Percent change in the mean PP obtained after study drug administration

    Measured: Up to Day 3

  23. Percent change in the mean PR obtained after study drug administration

    Measured: Up to Day 3

  24. Percent change in the mean SV obtained after study drug administration

    Measured: Up to Day 3

  25. Absolute change from baseline (post-REGN5381 administration) in the mean SBP obtained after study drug administration

    Measured: Up to Day 3

  26. Absolute change from baseline (post-REGN5381 administration) in the mean DBP obtained after study drug administration

    Measured: Up to Day 3

  27. Absolute change from baseline (post-REGN5381 administration) in the mean MAP obtained after study drug administration

    Measured: Up to Day 3

  28. Absolute change from baseline (post-REGN5381 administration) in the mean PP obtained after study drug administration

    Measured: Up to Day 3

  29. Absolute change from baseline (post-REGN5381 administration) in the mean PR obtained after study drug administration

    Measured: Up to Day 3

  30. Absolute change from baseline (post-REGN5381 administration) in the mean SV obtained after study drug administration

    Measured: Up to Day 3

  31. Maximum change from baseline (post-REGN administration) in the mean SBP obtained after study drug administration

    Measured: Up to Day 3

  32. Maximum change from baseline (post-REGN administration) in the mean DBP obtained after study drug administration

    Measured: Up to Day 3

  33. Maximum change from baseline (post-REGN administration) in the mean MAP obtained after study drug administration

    Measured: Up to Day 3

  34. Maximum change from baseline (post-REGN administration) in the mean PP obtained after study drug administration

    Measured: Up to Day 3

  35. Maximum change from baseline (post-REN5381 administration) in the mean PR obtained after study drug administration

    Measured: Up to Day 3

  36. Maximum change from baseline (post-REGN5381 administration) in the mean SV obtained after study drug administration

    Measured: Up to Day 3

  37. Percent change from baseline (post-REN5381 administration) in the mean SBP obtained after study drug administration

    Measured: Up to Day 3

  38. Percent change from baseline (post-REN5381 administration) in the mean DBP obtained after study drug administration

    Measured: Up to Day 3

  39. Percent change from baseline (post-REN5381 administration) in the mean MAP obtained after study drug administration

    Measured: Up to Day 3

  40. Percent change from baseline (post-REN5381 administration) in the mean PP obtained after study drug administration

    Measured: Up to Day 3

  41. Percent change from baseline (post-REN5381 administration) in the mean PR obtained after study drug administration

    Measured: Up to Day 3

  42. Percent change from baseline (post-REN5381 administration) in the mean SV obtained after study drug administration

    Measured: Up to Day 3

  43. Absolute change from baseline (pre-REGN5381 administration) in the mean SBP obtained after study drug administration

    Measured: Up to Day 3

  44. Absolute change from baseline (pre-REGN5381 administration) in the mean DBP obtained after study drug administration

    Measured: Up to Day 3

  45. Absolute change from baseline (pre-REGN5381 administration) in the mean MAP obtained after study drug administration

    Measured: Up to Day 3

  46. Absolute change from baseline (pre-REGN5381 administration) in the mean PP obtained after study drug administration

    Measured: Up to Day 3

  47. Absolute change from baseline (pre-REGN5381 administration) in the mean PR obtained after study drug administration

    Measured: Up to Day 3

  48. Absolute change from baseline (pre-REGN5381 administration) in the mean SV obtained after study drug administration

    Measured: Up to Day 3

  49. Maximum change from baseline (pre-REGN administration) in the mean SBP obtained after study drug administration

    Measured: Up to Day 3

  50. Maximum change from baseline (pre-REGN administration) in the mean DBP obtained after study drug administration

    Measured: Up to Day 3

  51. Maximum change from baseline (pre-REGN administration) in the mean MAP obtained after study drug administration

    Measured: Up to Day 3

  52. Maximum change from baseline (pre-REGN administration) in the mean PP obtained after study drug administration

    Measured: Up to Day 3

  53. Maximum change from baseline (pre-REGN administration) in the mean PR obtained after study drug administration

    Measured: Up to Day 3

  54. Maximum change from baseline (pre-REGN administration) in the mean SV obtained after study drug administration

    Measured: Up to Day 3

  55. Percent change from baseline (pre-REN5381 administration) in the mean SBP obtained after study drug administration

    Measured: Up to Day 3

  56. Percent change from baseline (pre-REN5381 administration) in the mean DBP obtained after study drug administration

    Measured: Up to Day 3

  57. Percent change from baseline (pre-REN5381 administration) in the mean MAP obtained after study drug administration

    Measured: Up to Day 3

  58. Percent change from baseline (pre-REN5381 administration) in the mean PP obtained after study drug administration

    Measured: Up to Day 3

  59. Percent change from baseline (pre-REN5381 administration) in the mean PR obtained after study drug administration

    Measured: Up to Day 3

  60. Percent change from baseline (pre-REN5381 administration) in the mean SV obtained after study drug administration

    Measured: Up to Day 3

  61. Percentage of participants who return to within 10% of baseline (pre-REGN5381 administration) SBP obtained after study drug administration.

    Measured: Baseline to Day 3

  62. Percentage of participants who return to within 10% of baseline (pre-REGN5381 administration) DBP obtained after study drug administration.

    Measured: Baseline to Day 3

  63. Percentage of participants who return to within 10% of baseline (pre-REGN5381 administration) MAP obtained after study drug administration.

    Measured: Baseline to Day 3

  64. Percentage of participants who return to within 10% of baseline (pre-REGN5381 administration) PP obtained after study drug administration.

    Measured: Baseline to Day 3

  65. Percentage of participants who return to within 10% of baseline (pre-REGN5381 administration) PR obtained after study drug administration.

    Measured: Baseline to Day 3

  66. Percentage of participants who return to within 10% of baseline (pre-REGN5381 administration) SV obtained after study drug administration.

    Measured: Baseline to Day 3

  67. Time to return to within 10% of baseline (pre-REGN5381) SBP

    Measured: Up to approximately Day 162

  68. Time to return to within 10% of baseline (pre-REGN5381) DBP

    Measured: Up to approximately Day 162

  69. Time to return to within 10% of baseline (pre-REGN5381) MAP

    Measured: Up to approximately Day 162

  70. Time to return to within 10% of baseline (pre-REGN5381) PP

    Measured: Up to approximately Day 162

  71. Time to return to within 10% of baseline (pre-REGN5381) PR

    Measured: Up to approximately Day 162

  72. Time to return to within 10% of baseline (pre-REGN5381) SV

    Measured: Up to approximately Day 162

  73. SBP

    Measured: Through Day 36

  74. DBP

    Measured: Through Day 36

  75. MAP

    Measured: Through Day 36

  76. PP

    Measured: Through Day 36

  77. PR

    Measured: Through Day 36

  78. Absolute change from baseline in SBP

    Measured: Through Day 36

  79. Absolute change from baseline in DBP

    Measured: Through Day 36

  80. Absolute change from baseline in MAP

    Measured: Through Day 36

  81. Absolute change from baseline in PP

    Measured: Through Day 36

  82. Absolute change from baseline in PR

    Measured: Through Day 36

  83. Percent change from baseline in SBP

    Measured: Through Day 36

  84. Percent change from baseline in DBP

    Measured: Through Day 36

  85. Percent change from baseline in MAP

    Measured: Through Day 36

  86. Percent change from baseline in PP

    Measured: Through Day 36

  87. Percent change from baseline in PR

    Measured: Through Day 36

  88. Concentrations of total REGN9035

    Measured: Up to Day 162

  89. Concentrations of total REGN5381 over time

    Measured: Up to Day 162

  90. Concentrations of total REGN9035 and/or total REGN5381

    Measured: Up to Day 162

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted22 Mar 2022
  2. Study start13 Apr 2022
  3. Primary completion2 Apr 2024
  4. Study completion2 Apr 2024

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Sequential
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
93 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05291546
Sponsor's protocol ID
R9035-HV-2125
Other IDs
2021-005174-26
Status last verified
Apr 2024
First submitted
28 Feb 2022
Last updated
15 Apr 2024
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Yes: All Individual Patient Data (IPD) that underlie publicly available results will be considered for sharing

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing REGN9035 and REGN5381 in people with Healthy Volunteers, run by Regeneron Pharmaceuticals at 2 sites in 2 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 2 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 15 Apr 2024. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 2 sites in Belgium, Germany. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Incidence and Severity of Treatment Emergent Adverse Events (TEAEs) (time frame: Up to Day 162). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 15 Apr 2024.

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