A Trial to Learn if REGN7999 is Safe and Well Tolerated, and How it Works in the Body of Healthy Participants

NCT ID: NCT05481333

Last Updated: 2024-07-24

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE1
• Total Enrollment: 64 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2022-10-24
• Study Completion Date: 2023-08-29

Brief Summary

The primary objective of the study is to evaluate the safety and tolerability of single ascending intravenous (IV) and subcutaneous (SC) doses of REGN7999 in healthy adult participants.

The secondary objectives of the study are:

• To characterize the drug concentration profile of single doses of IV or SC REGN7999
• To assess the immunogenicity of single ascending SC or IV doses of REGN7999

Conditions

Healthy

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: SEQUENTIAL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: QUADRUPLE

Study Groups

IV Cohort 1

Single dose REGN7999 or Placebo; randomized 3:1

Group Type: EXPERIMENTAL

REGN7999

Intervention Type: DRUG

Ascending IV or SC dose administered per protocol

Placebo

Intervention Type: DRUG

Ascending IV or SC dose administered per protocol

IV Cohort 2

Single dose REGN7999 or Placebo; randomized 3:1

Group Type: EXPERIMENTAL

REGN7999

Intervention Type: DRUG

Ascending IV or SC dose administered per protocol

Placebo

Intervention Type: DRUG

Ascending IV or SC dose administered per protocol

IV Cohort 3

Single dose REGN7999 or Placebo; randomized 3:1

Group Type: EXPERIMENTAL

REGN7999

Intervention Type: DRUG

Ascending IV or SC dose administered per protocol

Placebo

Intervention Type: DRUG

Ascending IV or SC dose administered per protocol

IV Cohort 4

Single dose REGN7999 or Placebo; randomized 3:1

Group Type: EXPERIMENTAL

REGN7999

Intervention Type: DRUG

Ascending IV or SC dose administered per protocol

Placebo

Intervention Type: DRUG

Ascending IV or SC dose administered per protocol

IV Cohort 5

Single dose REGN7999 or Placebo; randomized 3:1

Group Type: EXPERIMENTAL

REGN7999

Intervention Type: DRUG

Ascending IV or SC dose administered per protocol

Placebo

Intervention Type: DRUG

Ascending IV or SC dose administered per protocol

SC Cohort 1

Single dose REGN7999 or Placebo; randomized 3:1

Group Type: EXPERIMENTAL

REGN7999

Intervention Type: DRUG

Ascending IV or SC dose administered per protocol

Placebo

Intervention Type: DRUG

Ascending IV or SC dose administered per protocol

SC Cohort 2

Single dose REGN7999 or Placebo; randomized 3:1

Group Type: EXPERIMENTAL

REGN7999

Intervention Type: DRUG

Ascending IV or SC dose administered per protocol

Placebo

Intervention Type: DRUG

Ascending IV or SC dose administered per protocol

SC Cohort 3

Single dose REGN7999 or Placebo; randomized 3:1

Group Type: EXPERIMENTAL

REGN7999

Intervention Type: DRUG

Ascending IV or SC dose administered per protocol

Placebo

Intervention Type: DRUG

Ascending IV or SC dose administered per protocol

Interventions

REGN7999

Ascending IV or SC dose administered per protocol

Intervention Type: DRUG

Placebo

Ascending IV or SC dose administered per protocol

Intervention Type: DRUG

Eligibility Criteria

Inclusion Criteria

1. Has a body mass index between 18 and 32 kg/m2, inclusive

2. Is judged by the investigator to be in good health based on medical history, physical examination, vital sign measurements, and electrocardiogram (ECG)s performed at screening and/or prior to administration of initial dose of study drug

3. Is in good health based on laboratory safety testing obtained at the screening and baseline visits per the protocol

4. Hemoglobin, serum iron, transferrin, serum ferritin, and transferrin saturation, equal to or above the lower limit of the reference range for the participant's age and sex at the local labs, at screening, repeatable once during screening period

5. White blood cell (WBC) count, platelet count, red blood cell (RBC) count, hematocrit, and RBC hemoglobin not clinically significantly outside of the reference range in the judgment of the investigator at screening and baseline visits

Exclusion Criteria

1. Pregnant or breastfeeding women

2. Consistent with Clinical Trial Facilitation Group (CTFG) guidance, women of childbearing potential (WOCBP) who are unwilling to practice highly effective contraception, during the study through the end of study (EOS) visit. Highly effective contraceptive measures include:

1. stable use of combined (estrogen and progestogen containing) hormonal contraception (oral, intravaginal, transdermal) or progestogen-only hormonal contraception (oral, injectable, implantable) associated with inhibition of ovulation initiated 2 or more menstrual cycles prior to screening;

2. intra-uterine device (IUD); intra-uterine hormone-releasing system;

3. bilateral tubal ligation or tubal occlusion;

4. vasectomized partner (provided that the male vasectomized partner is the sole sexual partner of the WOCBP study participant and that the vasectomized partner has obtained medical assessment of surgical success for the procedure); and/or

5. sexual abstinence as described in the protocol

3. In addition, premenopausal women whose method(s) of birth control is/are associated with ongoing menstruation (eg, combined hormonal contraceptive regimens associated with withdrawal bleeding, non-hormone-releasing IUD, bilateral tubal ligation, bilateral salpingectomy, vasectomized partner, sexual abstinence). Female participants must not be menstruating during the trial, due to being postmenopausal or due to permanent sterilization via hysterectomy, and/or bilateral oophorectomy, or amenorrheic due to use of hormone-releasing IUD, implantable device, or intake of continuous hormonal contraception

4. Sexually active male participants with WOCBP partners who are unwilling to use the following forms of medically acceptable birth control during the study through the EOS visit: vasectomy with medical assessment of surgical success OR consistent use of a condom

5. History of clinically significant cardiovascular (including congestive heart failure and angina), respiratory, hepatic, renal, gastrointestinal, endocrine, hematological, infectious, autoimmune, oncologic, psychiatric or neurological disease, as assessed by the investigator, that may confound the results of the study or poses an additional risk to the participant by study participation.

6. History of chronic anemia, at any time in the past

7. History of RBC transfusion reaction

8. Whole blood donation within the previous 56 days or plasma donation within the previous 7 days prior to screening. Planning on whole blood or plasma donation at any time point during the study.

9. Has a history of significant multiple and/or severe allergies (eg, latex gloves), or has had an anaphylactic reaction to prescription or nonprescription drugs or food

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 60 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Regeneron Pharmaceuticals

INDUSTRY

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Clinical Trial Management

Role: STUDY_DIRECTOR

Regeneron Pharmaceuticals

Locations

Drug Research Unit Gent

Ghent, , Belgium

Countries

Belgium

Other Identifiers

2022-500398-15-00

Identifier Type: OTHER

Identifier Source: secondary_id

R7999-HV-2154

Identifier Type: -

Identifier Source: org_study_id