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CompletedNCT03478891Updated Oct 26, 2020Results posted

Safety and Pharmacokinetics of a Human Monoclonal Antibody, VRC-EBOMAB092-00-AB (MAb114), Administered Intravenously to Healthy Adults

A Phase 1 interventional study of VRC-EBOMAB092-00-AB (MAb114) in Healthy Adult Immune Responses to Vaccine, sponsored by National Institute of Allergy and Infectious Diseases (NIAID). Completed at 1 site in United States. Open to participants aged 18 Years to 60 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2020-10-26.

Sponsored by National Institute of Allergy and Infectious Diseases (NIAID) · Phase 1, Interventional, and Treatment

Phase
Phase 1
Study type
Interventional
Enrollment
19
Allocation
Non-randomized
Ages
18 Years to 60 Years
Sex
All
01

Study summary

Background:

Ebola is a virus that has infected and killed people mostly in West Africa. There is no treatment or prevention for it, but several drugs are being studied. Researchers want to test the drug MAb114 in healthy people not exposed to Ebola to see whether it can be used for Ebola treatment in people who are infected in the future. This trial will not expose volunteers to the Ebola virus.

Objectives:

To see if MAb114 is safe and how a person's body responds to it.

Eligibility:

Healthy adults ages 18-60 who weigh 220.5 pounds or less

Design:

Participants will be screened under protocol NIH 11-I-0164 with:

  • Medical history
  • Physical exam
  • Blood or urine tests

Participants will have a first 8- to10-hour visit. They will get MAb114 by IV infusion. For this, a thin tube will be placed in an arm vein. They may get an IV line in their other arm to collect blood. Blood will be taken many times before and after the infusion. Participants may have a urine test.

Participants will get a thermometer to check their temperature for 3 days after they get MAb114. They will record their highest temperature and any symptoms.

Participants will have about 14 more study visits over 6 months. At each visit, they will have blood taken and be checked for any health changes. They will talk about how they are feeling and if they have taken any medications.

At the end of the 6 months, participants may be invited to take part in another study for follow-up sample collection.

Read the detailed description

VRC 608: A Phase I, Open-Label, Dose-Escalation Study of the Safety and Pharmacokinetics of a Human Monoclonal Antibody, VRC-EBOMAB092-00-AB (MAb114), Administered Intravenously to Healthy Adults

Study Design: VRC 608 is the first-in-human Phase I study to examine safety, tolerability and pharmacokinetics of the monoclonal antibody (MAb), VRC-EBOMAB092-00-AB (MAb114). MAb114 will be administered as a single dose. The hypotheses are: 1) MAb114 administration to healthy adults will be safe by the intravenous (IV) route; and 2) MAb114 will be detectable in human sera with a definable half-life. The primary objectives are to evaluate the safety and tolerability of MAb114 in healthy adults. Secondary objectives will evaluate the pharmacokinetics of MAb114 and the potential to detect an anti-drug antibody response to MAb114.

Product Description: MAb114 is a human IgG1 MAb targeted to the Zaire ebolavirus (EBOV) glycoprotein (GP). It was developed by the VRC/NIAID/NIH and manufactured at Cook Pharmica LLC d.b.a. Catalent Indiana, LLC (Bloomington, IN) under current Good Manufacturing Practice (cGMP) regulations. MAb114 is supplied as a lyophilized product in a glass vial at 400 mg per vial with target overfill to 425 mg per vial.

Subjects: Up to 30 healthy adults, 18-60 years of age.

Study Plan: This is an open-label, dose-escalation study of MAb114 administered by IV infusion at dosages of 5, 25 and 50 mg/kg (Groups 1-3). Enrollment will begin with the lowest dose group. Following the first product administration in each group, the study team will wait at least 3 days before administering MAb114 to a second subject within the same group. Dose-escalation evaluations will occur to ensure the safety data support proceeding to the higher doses. Solicited reactogenicity following product administration will be evaluated using a 3-day diary. Assessment of safety will include clinical observation and monitoring of serum hematological and chemical parameters at defined timepoints throughout the study.

  • Group 1: 3 subjects; 5 mg/kg IV
  • Group 2: 5 subjects; 25 mg/kg IV
  • Group 3: 10 subjects; 50 mg/kg IV
  • Total* 18 subjects

    • A minimum of 18 subjects will be enrolled. Enrollment up to a total of 30 subjects is permitted if additional subjects are necessary for safety or pharmacokinetic (PK) evaluations.

Study Duration: Subjects will be followed for 24 weeks after the study product administration.

02

Conditions studied

  • Healthy Adult Immune Responses to Vaccine

Keywords

  • Ebola Virus
  • Immune Response
  • Filovirus
  • Ebola Hemorrhagic Fever
  • First in Human
03

In context

Hemorrhagic Fever, Ebola

104 studies on the registry are indexed under Hemorrhagic Fever, Ebola; 13 are open to participants now.

This study's enrollment of 19 is below the median of 94 across 81 interventional studies indexed under Hemorrhagic Fever, Ebola.

Browse Hemorrhagic Fever, Ebola studies →

Lead sponsor

National Institute of Allergy and Infectious Diseases (NIAID) is the lead sponsor of 2,446 studies on the registry; 179 are open to participants now.

Of its 405 completed or terminated interventional studies of FDA-regulated products, 302 (75%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 60 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

A volunteer must meet all of the following criteria:

  • Able and willing to complete the process.
  • Available for clinical follow-up through the last study visit.
  • 18 to 60 years of age.
  • In good general health without medical history.
  • Willing to have blood samples collected, stored indefinitely, and used for research purposes.
  • Able to provide proof of identity to the satisfaction of the study clinician completing the enrollment process.
  • Physical examination without clinically significant findings within the 84 days prior to enrollment.
  • Have screening laboratory values within 84 days prior to enrollment that meet the following criteria:

    • White Blood Cell (WBC) 2,500-12,000/mm\^3
    • WBC differential either within institutional normal range or accompanied by the Principal Investigator (PI) or designee approval
    • = 125,000 - 400,000/mm\^3
    • within institutional normal range or accompanied by the PI or designee approval
    • Creatinine less than or equal to 1.1 x (ULN)
    • (ALT) less than or equal to 1.25 x ULN
    • Negative for (HIV) infection by a Food and Drug Administration (FDA) approved method of detection
    • Negative for core antibody (HBcAb) and virus antibody (HCV Ab)
  • Criteria applicable to women of :

    • If a woman is of and sexually active with a male partner, then she agrees to use an effective means of from the time of study enrollment until the last study visit, or to be monogamous with a partner who has had a vasectomy.
    • Negative human chorionic gonadotropin (beta-HCG) pregnancy test (urine or serum) on day of enrollment and product administration.

Exclusion criteria

EXCLUSION CRITERIA:

A volunteer will be excluded from study participation if one or more of the following conditions apply:

  • Previous receipt of a licensed or monoclonal antibody or Ebola vaccine.
  • Weight >100 kg.
  • Any history of a severe allergic reaction with generalized urticaria, angioedema or anaphylaxis prior to enrollment that has a reasonable risk of recurrence during the study.
  • Hypertension that is not well controlled.
  • Woman who is breast-feeding, or planning to become pregnant during study participation.
  • Receipt of any investigational study product within 28 days prior to enrollment.
  • Any other chronic or medical condition that in the opinion of the investigator would jeopardize the safety or rights of the volunteer, including but not limited to: diabetes mellitus type I, chronic hepatitis; OR clinically significant forms of: drug or alcohol abuse, asthma, disease, psychiatric disorders, heart disease, or cancer.
  • Bleeding disorder diagnosed by a doctor (e.g. factor deficiency, coagulopathy, or disorder requiring special precautions) or significant bruising or bleeding difficulties with intramuscular (IM) injections or blood draws.
  • Use of angiotensin-converting enzyme (ACE) inhibitors or other potential nephrotoxins.
Terms in these criteria, in plain language(14)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

Platelets

Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.

Hemoglobin (Hb)

The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).

ULN (upper limit of normal)

The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.

“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.

ALT and AST (liver enzymes)

Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.

Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

Hepatitis C tests

Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.

After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Reproductive potential

Able to have children. For women this usually means from the first period until menopause, unless permanently unable to through surgery; for men, unless permanently sterile. Read who the line is about — participants, women, men, or their partners.

Criteria about it usually ask for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

Autoimmune disease

A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.

Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.

05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Sequential assignment
Masking
None (open label)
Enrollment
19 participants (actual)

Study arms

  • Experimental
    Group 1: 5 mg/kg IV

    Group 1 subjects received a single IV infusion of a Human Monoclonal Antibody (MAb), VRC-EBOMAB092-00-AB (MAb114), on Day 0 at a dose of 5 mg/kg.

    Biological: VRC-EBOMAB092-00-AB (MAb114)

  • Experimental
    Group 2: 25 mg/kg IV

    Group 2 subjects received a single IV infusion of a Human Monoclonal Antibody (MAb), VRC-EBOMAB092-00-AB (MAb114), on Day 0 at a dose of 25 mg/kg.

    Biological: VRC-EBOMAB092-00-AB (MAb114)

  • Experimental
    Group 3: 50 mg/kg IV

    Group 3 subjects received a single IV infusion of a Human Monoclonal Antibody (MAb), VRC-EBOMAB092-00-AB (MAb114), on Day 0 at a dose of 50 mg/kg.

    Biological: VRC-EBOMAB092-00-AB (MAb114)

Interventions

  • VRC-EBOMAB092-00-AB (MAb114) is a human immunoglobulin (IgG1) monoclonal antibody (MAb) targeted to the Zaire ebolavirus (EBOV) glycoprotein (GP).

06

What researchers measure

Primary outcomes

  1. Number of Subjects Experiencing Infusion Reaction During Product Administration

    Possible infusion reaction symptoms: unusually tired/feeling unwell, muscles aches, headache, chills, rigors, nausea, fever, joint pain, urticaria/rash, and pruritus. Also information was collected if administration was slowed down or stopped for reactogenicity reasons.

    Time frame: About 30 minutes of product administration

  2. Number of Subjects Reporting Systemic Reactogenicity Signs and Symptoms Within 3 Days of Product Administration

    Subjects recorded 3-day systemic reactogenicity symptoms in a diary after study product administration. Solicited systemic symptoms include: unusually tired/feeling unwell, muscles aches, headache, chills, nausea, fever and joint pain. Subjects recorded highest measured temperature daily. Clinicians reviewed the diary with the subject and collected resolution information for any symptoms that were not resolved within 3 days. Subjects were counted once for each symptom at the worst severity if they indicated experiencing the symptom at any severity during the reporting period. The number reported for "Any Systemic Symptom" is the number of subjects experiencing any systemic symptom as reported at the worst severity. Solicited reactogenicity was recorded without an attribution assessment. Grading was done by Division of AIDS Table for Grading the Severity of Adult and Pediatric Adverse Events Version 2.1.

    Time frame: 3 days after product administration

  3. Number of Subjects Reporting Local Reactogenicity Signs and Symptoms Within 7 Days of Product Administration

    Local reactogenicity symptoms were assessed and recorded by clinicians. Solicited local symptoms include pain/tenderness, swelling, redness, bruising, and pruritus (itchiness) at the product administration site. Clinicians assessed the study product administration site for local symptoms on the day of product administration after completion of the administration and on Days 1, 2 and 7 post administration. Subjects were counted once for each symptom at the worst severity if they experienced the symptom at any severity during the reporting period. If symptoms were experienced, clinicians collected resolution information for any symptom that wasn't resolved within 7 days. The number reported for "Any Local Symptom" is the number of subjects reporting any local symptom as reported at the worst severity. Solicited reactogenicity was recorded without attribution assessment. Grading was done by Division of AIDS Table for Grading the Severity of Adult and Pediatric Adverse Events Version 2.1.

    Time frame: 7 days after product administration

  4. Number of Subjects Reporting 1 or More Unsolicited Non-Serious Adverse Events

    Unsolicited adverse events (AEs) collected during the period from study product administration at Day 0 through 28 days after product administration. After the indicated time period through the last expected study visit at 24 weeks after product administration, only new chronic medical conditions collected as unsolicited AEs. The number reported is the number of subjects who experienced at least one AE in the reporting period. A subject with multiple experiences of the same event is counted once using the event of worst severity. The relationship between an AE and the product was assessed by the investigator on the basis of his or her clinical judgment and the protocol-specific definitions of Related - There is a reasonable possibility that the AE may be related to the study product and Not Related - There is not a reasonable possibility that the AE is related to the study product.

    Time frame: Through 24 weeks after product administration

  5. Number of Subjects Reporting Serious Adverse Events

    Serious adverse events (SAEs) collected during the period from study product administration at Day 0 through 24 weeks after product administration. Grading done by Division of AIDS Table for Grading the Severity of Adult and Pediatric Adverse Events Version 2.1. The relationship between a SAE and the product was assessed by the investigator on the basis of his or her clinical judgment and the protocol-specific definitions of Related - There is a reasonable possibility that the SAE may be related to the study product and Not Related - There is not a reasonable possibility that the SAE is related to the study product.

    Time frame: Through 24 weeks after product administration

Secondary outcomes

  1. Maximum Observed Serum Concentration (Cmax) of MAb114

    Cmax is the peak serum concentration that MAb114 achieves after it has been administered; it is determined as a maximum value on the summary pharmacokinetic (PK) curve for each study group.

    Time frame: Pre-infusion (baseline), end of infusion (0h), 1 hr, 3 hr, 6 hr, 24 hr, 48 hr and 7-28 days post-infusion

  2. Time to Reach Maximum Observed Serum Concentration (Tmax) of MAb114

    Tmax is the time it takes to reach Cmax of MAb114 after it has been administered; it is determined based on the summary PK curve for each study group.

    Time frame: Pre-infusion (baseline), end of infusion (0h), 1 hr, 3 hr, 6 hr, 24 hr, 48 hr and 7-28 days post-infusion

  3. Mean Serum Concentration of MAb114

    The mean of individual subject MAb114 serum concentrations by administered dose group

    Time frame: Pre-infusion (baseline), end of infusion (0h), 1 hr, 3 hr, 6 hr, 24 hr, 48 hr and 7-28 days post-infusion

  4. Overall IV Half-life (T1/2) of MAb114

    Half-life (T1/2) is the time required for half of the drug to be eliminated from the serum.

    Time frame: Pre-infusion (baseline), end of infusion (0h), 1 hr, 3 hr, 6 hr, 24 hr, 48 hr and 7-56 days post-infusion

  5. Area Under the Curve (AUC0-28D)

    The AUC0-28D represents the total drug exposure in 28 days after MAb114 administration; it is determined based on the summary PK curve for each group.

    Time frame: Pre-infusion (baseline), end of infusion (0h), 1 hr, 3 hr, 6 hr, 24 hr, 48 hr and 7-28 days post-infusion

  6. Volume of Distribution (Vd) at Steady-state

    Theoretical volume that would be necessary to contain the total amount of administered drug at the same concentration as observed in plasma. It represents the degree to which a drug is distributed in body tissue rather than the plasma and calculated based in the PK curve for each study group.

    Time frame: Pre-infusion (baseline), end of infusion (0h), 1 hr, 3 hr, 6 hr, 24 hr, 48 hr and 7-28 days post-infusion

  7. MAb114 Clearance Rate

    Rate of MAb114 elimination divided by the plasma MAb114 concentration; determined based on the summary PK curve for each study group.

    Time frame: Pre-infusion (baseline), end of infusion (0h), 1 hr, 3 hr, 6 hr, 24 hr, 48 hr and 7-28 days post-infusion

  8. Number of Subjects Who Produced Anti-drug Antibodies to MAb114

    Serum samples collected 28 days and 56 days after MAb114 administration

    Time frame: Days 28 and 56 post-infusion

07

Results

Posted Oct 11, 2018

Participant flow

Healthy adults were recruited at the NIH Clinical Center in Bethesda, Maryland

Participant flow — Overall Study
MilestoneGroup 1: 5 mg/kg IVGroup 2: 25 mg/kg IVGroup 3: 50 mg/kg IV
Started3511
Received mab1143510
Completed258
Not completed103
Withdrew: Enrolled, but product never administered001
Withdrew: Moved from area001
Withdrew: Lost to follow-up101

Outcome measures

PrimaryNumber of Subjects Experiencing Infusion Reaction During Product Administration

Possible infusion reaction symptoms: unusually tired/feeling unwell, muscles aches, headache, chills, rigors, nausea, fever, joint pain, urticaria/rash, and pruritus. Also information was collected if administration was slowed down or stopped for reactogenicity reasons.

Time frame:
About 30 minutes of product administration
Reported as:
Count of participants · Participants
Number of Subjects Experiencing Infusion Reaction During Product Administration
ParticipantsGroup 1: 5 mg/kg IV (n=3)Group 2: 25 mg/kg IV (n=5)Group 3: 50 mg/kg IV (n=10)
Number who experienced infusion reaction000
Number who completed infusion in about 30 min3510
PrimaryNumber of Subjects Reporting Systemic Reactogenicity Signs and Symptoms Within 3 Days of Product Administration

Subjects recorded 3-day systemic reactogenicity symptoms in a diary after study product administration. Solicited systemic symptoms include: unusually tired/feeling unwell, muscles aches, headache, chills, nausea, fever and joint pain. Subjects recorded highest measured temperature daily. Clinicians reviewed the diary with the subject and collected resolution information for any symptoms that were not resolved within 3 days. Subjects were counted once for each symptom at the worst severity if they indicated experiencing the symptom at any severity during the reporting period. The number reported for "Any Systemic Symptom" is the number of subjects experiencing any systemic symptom as reported at the worst severity. Solicited reactogenicity was recorded without an attribution assessment. Grading was done by Division of AIDS Table for Grading the Severity of Adult and Pediatric Adverse Events Version 2.1.

Time frame:
3 days after product administration
Reported as:
Count of participants · Participants
Number of Subjects Reporting Systemic Reactogenicity Signs and Symptoms Within 3 Days of Product Administration
ParticipantsGroup 1: 5 mg/kg IV (n=3)Group 2: 25 mg/kg IV (n=5)Group 3: 50 mg/kg IV (n=10)Overall (n=18)
Malaise — None34815
Malaise — Mild0123
Malaise — Moderate0000
Malaise — Severe0000
Myalgia — None34916
Myalgia — Mild0112
Myalgia — Moderate0000
Myalgia — Severe0000
Headache — None33814
Headache — Mild0224
Headache — Moderate0000
Headache — Severe0000
Chills — None34916
Chills — Mild0112
Chills — Moderate0000
Chills — Severe0000
Nausea — None34916
Nausea — Mild0112
Nausea — Moderate0000
Nausea — Severe0000
Fever — None351018
Fever — Mild0000
Fever — Moderate0000
Fever — Severe0000
Joint Pain — None34916
Joint Pain — Mild0112
Joint Pain — Moderate0000
Joint Pain — Severe0000
Any systemic symptom reported — None33814
Any systemic symptom reported — Mild0224
Any systemic symptom reported — Moderate0000
Any systemic symptom reported — Severe0000
PrimaryNumber of Subjects Reporting Local Reactogenicity Signs and Symptoms Within 7 Days of Product Administration

Local reactogenicity symptoms were assessed and recorded by clinicians. Solicited local symptoms include pain/tenderness, swelling, redness, bruising, and pruritus (itchiness) at the product administration site. Clinicians assessed the study product administration site for local symptoms on the day of product administration after completion of the administration and on Days 1, 2 and 7 post administration. Subjects were counted once for each symptom at the worst severity if they experienced the symptom at any severity during the reporting period. If symptoms were experienced, clinicians collected resolution information for any symptom that wasn't resolved within 7 days. The number reported for "Any Local Symptom" is the number of subjects reporting any local symptom as reported at the worst severity. Solicited reactogenicity was recorded without attribution assessment. Grading was done by Division of AIDS Table for Grading the Severity of Adult and Pediatric Adverse Events Version 2.1.

Time frame:
7 days after product administration
Reported as:
Count of participants · Participants
Number of Subjects Reporting Local Reactogenicity Signs and Symptoms Within 7 Days of Product Administration
ParticipantsGroup 1: 5 mg/kg IV (n=3)Group 2: 25 mg/kg IV (n=5)Group 3: 50 mg/kg IV (n=10)Overall (n=18)
Pain/Tenderness — None351018
Pain/Tenderness — Mild0000
Pain/Tenderness — Moderate0000
Pain/Tenderness — Severe0000
Bruising — None351018
Bruising — Mild0000
Bruising — Moderate0000
Bruising — Severe0000
Swelling — None351018
Swelling — Mild0000
Swelling — Moderate0000
Swelling — Severe0000
Redness — None351018
Redness — Mild0000
Redness — Moderate0000
Redness — Severe0000
Pruritis — None351018
Pruritis — Mild0000
Pruritis — Moderate0000
Pruritis — Severe0000
Any Local Symptoms Reported — None351018
Any Local Symptoms Reported — Mild0000
Any Local Symptoms Reported — Moderate0000
Any Local Symptoms Reported — Severe0000
PrimaryNumber of Subjects Reporting 1 or More Unsolicited Non-Serious Adverse Events

Unsolicited adverse events (AEs) collected during the period from study product administration at Day 0 through 28 days after product administration. After the indicated time period through the last expected study visit at 24 weeks after product administration, only new chronic medical conditions collected as unsolicited AEs. The number reported is the number of subjects who experienced at least one AE in the reporting period. A subject with multiple experiences of the same event is counted once using the event of worst severity. The relationship between an AE and the product was assessed by the investigator on the basis of his or her clinical judgment and the protocol-specific definitions of Related - There is a reasonable possibility that the AE may be related to the study product and Not Related - There is not a reasonable possibility that the AE is related to the study product.

Time frame:
Through 24 weeks after product administration
Reported as:
Count of participants · Participants
Number of Subjects Reporting 1 or More Unsolicited Non-Serious Adverse Events
ParticipantsGroup 1: 5 mg/kg IV (n=3)Group 2: 25 mg/kg IV (n=5)Group 3: 50 mg/kg IV (n=10)Overall (n=18)
Related to MAb114 Administration0000
Not Related to MAb114 Administration0257
PrimaryNumber of Subjects Reporting Serious Adverse Events

Serious adverse events (SAEs) collected during the period from study product administration at Day 0 through 24 weeks after product administration. Grading done by Division of AIDS Table for Grading the Severity of Adult and Pediatric Adverse Events Version 2.1. The relationship between a SAE and the product was assessed by the investigator on the basis of his or her clinical judgment and the protocol-specific definitions of Related - There is a reasonable possibility that the SAE may be related to the study product and Not Related - There is not a reasonable possibility that the SAE is related to the study product.

Time frame:
Through 24 weeks after product administration
Reported as:
Count of participants · Participants
Number of Subjects Reporting Serious Adverse Events
ParticipantsGroup 1: 5 mg/kg IV (n=3)Group 2: 25 mg/kg IV (n=5)Group 3: 50 mg/kg IV (n=10)Overall (n=18)
Related to MAb114 Administration0000
Not Related to MAb114 Administration0011
SecondaryMaximum Observed Serum Concentration (Cmax) of MAb114

Cmax is the peak serum concentration that MAb114 achieves after it has been administered; it is determined as a maximum value on the summary pharmacokinetic (PK) curve for each study group.

Time frame:
Pre-infusion (baseline), end of infusion (0h), 1 hr, 3 hr, 6 hr, 24 hr, 48 hr and 7-28 days post-infusion
Reported as:
Mean · µg/mL
Maximum Observed Serum Concentration (Cmax) of MAb114
µg/mLGroup 1: 5 mg/kg IV (n=3)Group 2: 25 mg/kg IV (n=5)Group 3: 50 mg/kg IV (n=5)
Maximum Observed Serum Concentration (Cmax) of MAb114198.45 ± 45.15829.38 ± 237.401961.21 ± 339.83
SecondaryTime to Reach Maximum Observed Serum Concentration (Tmax) of MAb114

Tmax is the time it takes to reach Cmax of MAb114 after it has been administered; it is determined based on the summary PK curve for each study group.

Time frame:
Pre-infusion (baseline), end of infusion (0h), 1 hr, 3 hr, 6 hr, 24 hr, 48 hr and 7-28 days post-infusion
Reported as:
Mean · hours
Time to Reach Maximum Observed Serum Concentration (Tmax) of MAb114
hoursGroup 1: 5 mg/kg IV (n=3)Group 2: 25 mg/kg IV (n=5)Group 3: 50 mg/kg IV (n=5)
Time to Reach Maximum Observed Serum Concentration (Tmax) of MAb1143.21 ± 1.562.99 ± 2.162.75 ± 1.63
SecondaryMean Serum Concentration of MAb114

The mean of individual subject MAb114 serum concentrations by administered dose group

Time frame:
Pre-infusion (baseline), end of infusion (0h), 1 hr, 3 hr, 6 hr, 24 hr, 48 hr and 7-28 days post-infusion
Reported as:
Mean · µg/mL
Mean Serum Concentration of MAb114
µg/mLGroup 1: 5 mg/kg IV (n=3)Group 2: 25 mg/kg IV (n=5)Group 3: 50 mg/kg IV (n=5)
Concentration at Day 752.60 ± 22.19373.12 ± 75.32692.64 ± 201.63
Concentration at Day 1442.90 ± 5.53272.91 ± 46.16629.34 ± 118.19
Concentration at Day 2825.46 ± 5.96180.19 ± 38.82427.21 ± 88.43
Average Concentration Days 0-2852.87 ± 10.87306.65 ± 32.14663.87 ± 129.55
SecondaryOverall IV Half-life (T1/2) of MAb114

Half-life (T1/2) is the time required for half of the drug to be eliminated from the serum.

Time frame:
Pre-infusion (baseline), end of infusion (0h), 1 hr, 3 hr, 6 hr, 24 hr, 48 hr and 7-56 days post-infusion
Reported as:
Mean · days
Overall IV Half-life (T1/2) of MAb114
daysGroup 1: 5 mg/kg IV (n=3)Group 2: 25 mg/kg IV (n=5)Group 3: 50 mg/kg IV (n=1)Overall (n=9)
Overall IV Half-life (T1/2) of MAb11420.1 ± 6.926.7 ± 3.823.624.2 ± 1.8
SecondaryArea Under the Curve (AUC0-28D)

The AUC0-28D represents the total drug exposure in 28 days after MAb114 administration; it is determined based on the summary PK curve for each group.

Time frame:
Pre-infusion (baseline), end of infusion (0h), 1 hr, 3 hr, 6 hr, 24 hr, 48 hr and 7-28 days post-infusion
Reported as:
Mean · µg x day/mL
Area Under the Curve (AUC0-28D)
µg x day/mLGroup 1: 5 mg/kg IV (n=3)Group 2: 25 mg/kg IV (n=5)Group 3: 50 mg/kg IV (n=5)
Area Under the Curve (AUC0-28D)1480 ± 3048586 ± 90018588 ± 3627
SecondaryVolume of Distribution (Vd) at Steady-state

Theoretical volume that would be necessary to contain the total amount of administered drug at the same concentration as observed in plasma. It represents the degree to which a drug is distributed in body tissue rather than the plasma and calculated based in the PK curve for each study group.

Time frame:
Pre-infusion (baseline), end of infusion (0h), 1 hr, 3 hr, 6 hr, 24 hr, 48 hr and 7-28 days post-infusion
Reported as:
Mean · Liters
Volume of Distribution (Vd) at Steady-state
LitersGroup 1: 5 mg/kg IV (n=3)Group 2: 25 mg/kg IV (n=5)Group 3: 50 mg/kg IV (n=5)
Volume of Distribution (Vd) at Steady-state5.08 ± 0.883.93 ± 0.504.16 ± 0.74
SecondaryMAb114 Clearance Rate

Rate of MAb114 elimination divided by the plasma MAb114 concentration; determined based on the summary PK curve for each study group.

Time frame:
Pre-infusion (baseline), end of infusion (0h), 1 hr, 3 hr, 6 hr, 24 hr, 48 hr and 7-28 days post-infusion
Reported as:
Mean · mL/day
MAb114 Clearance Rate
mL/dayGroup 1: 5 mg/kg IV (n=3)Group 2: 25 mg/kg IV (n=5)Group 3: 50 mg/kg IV (n=5)
MAb114 Clearance Rate199 ± 45108 ± 21115 ± 15
SecondaryNumber of Subjects Who Produced Anti-drug Antibodies to MAb114

Serum samples collected 28 days and 56 days after MAb114 administration

Time frame:
Days 28 and 56 post-infusion
Reported as:
Count of participants · Participants
Number of Subjects Who Produced Anti-drug Antibodies to MAb114
ParticipantsGroup 1: 5 mg/kg IV (n=3)Group 2: 25 mg/kg IV (n=5)Group 3: 50 mg/kg IV (n=5)
Day 28: Subjects with Anti-drug antibodies000
Day 56: Subjects with Anti-drug antibodies000

Adverse events

Collected over Solicited adverse events (AEs) included systemic AEs reported by subjects at the worst severity through 3 days post product administration; and local administration site AEs reported at the worst severity through 7 days post product administration. Unsolicited AEs were reported from the date of product administration through 28 days thereafter, and new chronic medical conditions and SAEs with onset any time following the date of product administration through 24 weeks.. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Group 1: 5 mg/kg IV0/3 (0%)0/3 (0%)0/3 (0%)
Group 2: 25 mg/kg IV0/5 (0%)0/5 (0%)3/5 (60%)
Group 3: 50 mg/kg IV0/10 (0%)1/10 (10%)5/10 (50%)
Most frequent serious events
Most frequent serious events
EventGroup 1: 5 mg/kg IVGroup 2: 25 mg/kg IVGroup 3: 50 mg/kg IV
SyncopeNervous system disorders0/30/51/10
Most frequent other events
Showing 10 of 13
Most frequent other events
EventGroup 1: 5 mg/kg IVGroup 2: 25 mg/kg IVGroup 3: 50 mg/kg IV
HeadacheNervous system disorders0/32/52/10
Upper respiratory tract infectionInfections and infestations0/30/53/10
HordeolumInfections and infestations0/31/50/10
DyspepsiaGastrointestinal disorders0/31/50/10
MalaiseGeneral disorders0/31/52/10
MyalgiaMusculoskeletal and connective tissue disorders0/31/51/10
ChillsGeneral disorders0/31/51/10
NauseaGastrointestinal disorders0/31/51/10
Joint PainMusculoskeletal and connective tissue disorders0/31/51/10
Abdominal painGastrointestinal disorders0/30/51/10

Baseline characteristics

All enrolled subjects

Age, Continuous
Age, Continuous(years)Group 1: 5 mg/kg IVGroup 2: 25 mg/kg IVGroup 3: 50 mg/kg IVTotal
Mean39.7 ± 7.436.4 ± 9.839.0 ± 13.938.4 ± 11.7
Age, Customized
Age, Customized(Participants)Group 1: 5 mg/kg IVGroup 2: 25 mg/kg IVGroup 3: 50 mg/kg IVTotal
21-30 years0145
31-40 years2226
41-50 years1214
51-60 years0044
Sex: Female, Male
Sex: Female, Male(Participants)Group 1: 5 mg/kg IVGroup 2: 25 mg/kg IVGroup 3: 50 mg/kg IVTotal
Female14712
Male2147
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Group 1: 5 mg/kg IVGroup 2: 25 mg/kg IVGroup 3: 50 mg/kg IVTotal
Hispanic or Latino0112
Not Hispanic or Latino341017
Unknown or Not Reported0000
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Group 1: 5 mg/kg IVGroup 2: 25 mg/kg IVGroup 3: 50 mg/kg IVTotal
American Indian or Alaska Native0000
Asian0011
Native Hawaiian or Other Pacific Islander0000
Black or African American0011
White25714
More than one race1023
Unknown or Not Reported0000
Region of Enrollment
Region of Enrollment(Participants)Group 1: 5 mg/kg IVGroup 2: 25 mg/kg IVGroup 3: 50 mg/kg IVTotal
United States351119
Weight
Weight(kg)Group 1: 5 mg/kg IVGroup 2: 25 mg/kg IVGroup 3: 50 mg/kg IVTotal
Mean88 ± 8.866.3 ± 12.673.5 ± 12.473.9 ± 13.4
Education
Education(Participants)Group 1: 5 mg/kg IVGroup 2: 25 mg/kg IVGroup 3: 50 mg/kg IVTotal
College or University23813
Advanced Degree1236
08

Study locations

1 site
  • National Institutes of Health Clinical Center
    Bethesda, Maryland 20892, United States
09

References and documents

Publications

  • Corti D, Misasi J, Mulangu S, Stanley DA, Kanekiyo M, Wollen S, Ploquin A, Doria-Rose NA, Staupe RP, Bailey M, Shi W, Choe M, Marcus H, Thompson EA, Cagigi A, Silacci C, Fernandez-Rodriguez B, Perez L, Sallusto F, Vanzetta F, Agatic G, Cameroni E, Kisalu N, Gordon I, Ledgerwood JE, Mascola JR, Graham BS, Muyembe-Tamfun JJ, Trefry JC, Lanzavecchia A, Sullivan NJ. Protective monotherapy against lethal Ebola virus infection by a potently neutralizing antibody. Science. 2016 Mar 18;351(6279):1339-42. doi: 10.1126/science.aad5224. Epub 2016 Feb 25. PubMed 26917593 ↗
  • Misasi J, Gilman MS, Kanekiyo M, Gui M, Cagigi A, Mulangu S, Corti D, Ledgerwood JE, Lanzavecchia A, Cunningham J, Muyembe-Tamfun JJ, Baxa U, Graham BS, Xiang Y, Sullivan NJ, McLellan JS. Structural and molecular basis for Ebola virus neutralization by protective human antibodies. Science. 2016 Mar 18;351(6279):1343-6. doi: 10.1126/science.aad6117. Epub 2016 Feb 25. PubMed 26917592 ↗
  • Gaudinski MR, Coates EE, Novik L, Widge A, Houser KV, Burch E, Holman LA, Gordon IJ, Chen GL, Carter C, Nason M, Sitar S, Yamshchikov G, Berkowitz N, Andrews C, Vazquez S, Laurencot C, Misasi J, Arnold F, Carlton K, Lawlor H, Gall J, Bailer RT, McDermott A, Capparelli E, Koup RA, Mascola JR, Graham BS, Sullivan NJ, Ledgerwood JE; VRC 608 Study team. Safety, tolerability, pharmacokinetics, and immunogenicity of the therapeutic monoclonal antibody mAb114 targeting Ebola virus glycoprotein (VRC 608): an open-label phase 1 study. Lancet. 2019 Mar 2;393(10174):889-898. doi: 10.1016/S0140-6736(19)30036-4. Epub 2019 Jan 24. Erratum In: Lancet. 2020 May 30;395(10238):1694. doi: 10.1016/S0140-6736(20)31195-8. PubMed 30686586 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from May 2018 to primary completion in Mar 2019, 10 months.

Of 16 phase 1 interventional studies under Hemorrhagic Fever, Ebola, half reached primary completion within 16 months of starting (the median), counting those still running; a quarter within 10 and three quarters within 23. This study's 10 months is below that.

How these figures are worked out, and which studies are left out of them.

Registered
Mar 21, 2018
First posted
Mar 27, 2018
StartActual
May 16, 2018
Primary completionActual
Mar 20, 2019
CompletionActual
Mar 20, 2019
Results first posted
Oct 11, 2018
Last update
Oct 26, 2020
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Oct 26, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03478891
Responsible party
Sponsor
First posted
Mar 27, 2018
Start date
May 16, 2018
Primary completion
Mar 20, 2019
Completion
Mar 20, 2019
Results posted
Oct 11, 2018
Last update
Oct 26, 2020

Study contacts

Martin R Gaudinski, M.D.
principal investigator · National Institute of Allergy and Infectious Diseases (NIAID)

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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Studies of the drug tested here: Ansuvimab

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