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A Comparison of the Safety, PD and PK of a Single Dose of SYN023 Administered With Licensed Rabies Vaccines

A Phase 2 Randomized Blinded Placebo Controlled Comparison of the Safety Pharmacokinetics and Pharmacodynamics of a Single Dose of SYN023 Administered With Licensed Rabies Vaccines in Healthy Adult Subjects

Status
Completed
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02956746
Acronym
RabiesMab
Enrollment
164
Registered
2016-11-07
Start date
2016-08-31
Completion date
2018-01-31
Last updated
2019-02-27

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

Conditions

Human Rabies

Brief summary

This is single site, randomized, blinded comparison of the immunogenicity, of Imovax (RVi) and Rabavert (RVa) rabies vaccines when subjects are administered rabies immune globulin (RIG) or SYN023. Subjects will be randomized into one of four dose groups: RVi + SYN023, RVi+RIG, RVa+SYN023 and RVa+RIG. The initial dose of RVi and RVa will be co-administered with either RIG or SYN023). Rabies virus neutralizing activity (RVNA) and blood levels of SYN023 will be measured for the remainder of the trial while the rest of the five RVi and RVa doses are given. The study will last 112 days. SYN023 concentrations and anti-SYN023 antibodies will also be measured.

Detailed description

Administered immunoglobulins directed against vaccine antigens have the potential to inhibit the immune response to a vaccine. Both vaccination and immune globulin are used together in the post exposure prophylaxis of rabies virus infection. SYN023 (a mixture of two monoclonal antibodies CTB011 and CTB012) may be used instead of human rabies immune globulin. Since there is a risk of antagonism of vaccine induced immunity by SYN023, as there is with rabies immune globulin, it is necessary to study possible interactions of these two agents that might be used concurrently. This is single site, randomized, blinded comparison of the immunogenicity, of Imovax (RVi) and Rabavert (RVa) rabies vaccines when administered concurrently with rabies immune globulin (RIG) or SYN023. Subjects will be randomized into one of four dose groups: RVi + SYN023, RVi + RIG, RVa+SYN023 and RVa + RIG. The initial dose of RVi and RVa will be co-administered with either RIG or SYN023). The remaining 4 doses of RVi and RVa will be administered intramuscularly as specified in the product labeling. Serum rabies virus neutralizing activity (RVNA) and serum concentrations of the components of of SYN023 will be measured for the remainder of the trial while the rest of the five RVi and RVa doses are given. Adverse events will be collected for the duration of the trial. The study will last 112 days. Anti-SYN023 antibodies will also be measured.

Interventions

BIOLOGICALSYN023

The effects of SYN023 on immunogenicity of rabies vaccines Imovax and RabAvert will be compared to the effect of human rabies immune globulin.

BIOLOGICALImovax

Subjects will receive SYN023 or HyperRAB ST (human rabies immune globulin) and 5 doses of Imovax rabies vaccine

BIOLOGICALRabAvert

Subjects will receive SYN023 or HyperRAB ST (human rabies immune globulin) and 5 doses of RabAvert rabies vaccine

BIOLOGICALHyperRAB ST (human rabies immune globulin)

The effects of SYN023 on immunogenicity of rabies vaccines Imovax and RabAvert will be compared to the effect of human rabies immune globulin.

Sponsors

inVentiv Health Clinical
CollaboratorOTHER
Synermore Biologics Co., Ltd.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
SINGLE (Subject)

Eligibility

Sex/Gender
ALL
Age
18 Years to 50 Years
Healthy volunteers
Yes

Inclusion criteria

1. Male or female subjects between 18 and 50 years of age, inclusive 2. Body mass index between 18 and 30 kg/m², inclusive 3. Female subjects physically capable of pregnancy (i.e., not sterilized and still menstruating or within 1 year of the last menses if menopausal) must: 1. Agree to avoid pregnancy from 28 days prior to Study Day 0 through the duration of the study. 2. If in a sexual relationship with a man, use an acceptable method of avoiding pregnancy during this period. Acceptable methods of avoiding pregnancy include: the use of at least two forms of contraception, including use by a partner of a barrier method (e.g., male condom with intravaginal spermicide) as one form of contraception. 4. Women of childbearing potential must have a negative serum pregnancy test within 24 hours preceding receipt of each dose. 5. Can understand and sign the informed consent document, can communicate with the investigator and provide updated contact information as needed for the duration of the study, has no current plans to move from the study area for the duration of the study, and can understand and comply with the requirements of the protocol.

Exclusion criteria

1. Oral temperature ≥37.5°C at screening 2. Complete blood count (CBC) and platelet count abnormal values (\>5% above the upper limit of normal \[ULN\] or \>5% below the lower limit of normal \[LLN\] per local laboratory parameters) at screening with exception of absolute lymphocyte count. 3. Abnormally elevated aspartate aminotransferase (AST), alanine aminotransferase (ALT), total bilirubin, alkaline phosphatase (ALP), or creatinine (Cr) values at screening (however a single test AST, ALT or ALP may be \>10% above the ULN per local laboratory parameters) 4. Abnormal PT (INR) PTT 5. Abnormal screening urinalysis result that is, per the investigator, clinically significant, or a screening urine dipstick result of ≥2+ protein 6. Positive screening urine test for illicit drugs (opiates, cocaine, amphetamines methamphetamines, barbiturates, benzodiazepines, tetrahydrocannabinol, PCP, MDMA, and methadone) 7. History or evidence of autoimmune disease 8. History or evidence of any past, present, or future possible immunodeficiency state, including laboratory evidence of human immunodeficiency virus (HIV) 1 or 2 infection 9. History or evidence of chronic hepatitis 10. History or evidence of rabies infection 11. History or evidence of any other acute or chronic disease that, in the opinion of the investigator, may interfere with the evaluation of the safety or immunogenicity of the drug or compromise the safety of the subject; for example a clinically relevant history of respiratory, thyroid, gastrointestinal, renal, hepatic, hematological, lymphatic, oncologic, cardiovascular, psychiatric, neurological, musculoskeletal, genitourinary, infective, inflammatory, immunological, dermatological or connective tissue disease 12. History or evidence of allergic disease or reaction, including adverse responses to therapeutic monoclonal antibodies that, in the opinion of the investigator, may compromise the safety of the subject 13. History of non-compliance that, in the opinion of the investigator, will make it unlikely that the subject will comply with the protocol 14. Previous exposure to rabies vaccine 15. Receipt of an immunoglobulin or blood product within 90 days prior to Study Day 0 16. Receipt of immunosuppressive medications other than inhaled or topical immunosuppressant drugs within 45 days prior to Study Day 0 17. Body weight greater than 90 kg. 18. History or evidence of IgA deficiency

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Participants With Serum Rabies Virus Neutralizing Activity112 daysInhibitory activity of serum in standard rabies virus inhibition test (RFFIT: Rapid Fluorescent Foci Inhibition Test) assessed as serum RVNA ≥ 0.5 IU/mL. RFFIT is a serum neutralization (inhibition) test, which means it measures the ability of rabies specific antibodies to neutralize rabies virus and prevent the virus from infecting cells. These antibodies are called rabies virus neutralizing antibodies (RVNA).

Secondary

MeasureTime frameDescription
Percentage of Participants With Immunogenicity: Anti-CTB012 Antibodies Positive112 daysMeasurement of the development of anti-CTB012 antibodies (a component of anti-SYN023 antibodies) in participants which will be analyzed on a continuous scale as a categorical variable by treatment assignment, with descriptive statistics.
Percentage of Participants With Immunogenicity: Anti-CTB011 Antibodies Positive112 daysMeasurement of the development of anti-CTB011 antibodies (a component of anti-SYN023 antibodies) in participants which will be analyzed on a continuous scale as a categorical variable by treatment assignment, with descriptive statistics.
SYN023 Monoclonal Antibody Areas Under the Curve (AUC0-last, AUC0-inf) for CTB011 and CTB012)84 daysThe area under the time concentration curve for SYN023 mAb components CTB011 and CTB012 will be estimated at Day 0 ( pre-dose), Day 1, Day 3, Day 7, Day 14, Day 28, Day 35, Day 42, and Day 84 post-dose, using non compartmental analysis.
Percentage of Participants With Adverse Event Incidence of SYN023 Compared to HRIG in RabAvert and Imovax Reciptients42 daysElectrocardiograms are performed to monitor subject safety. Laboratory evaluations for subject safety (adverse events) are serum chemistry evaluations, blood urea nitrogen, creatinine, bilirubin, alanine amino transferase, aspartate amino transferase, creatine phosphokinase, troponin, potassium, sodium, bicarbonate, calcium, complete blood count, platelet count, differential count, PT(prothrombin time, international normalized ratio) and PTT (partial prothrombin time and urinalyses for monitoring of safety. Additional laboratory tests may be required for evaluation of specific adverse events such as anaphylaxis and immune complex diseases. Adverse events and serious adverse events will be analyzed. A comparison of adverse event incidence between the four treatment groups will be performed.
Maximum Serum Concentration Cmax84 daysMaximum concentration of of CTB011 and CTB012 at Day 0 ( pre-dose), Day 1, Day 3, Day 7, Day 14, Day 28, Day 35, Day 42, and Day 84 post-dose, using non compartmental analysis.
Serum Clearance Rate (Clp) of CTB011 and CTB01284 daysCalculated serum clearance rates for CTB011 and CTB012 at Day 0 ( pre-dose), Day 1, Day 3, Day 7, Day 14, Day 28, Day 35, Day 42, and Day 84 post-dose, using non compartmental analysis.
Serum Half Lives of CTB011 and CTB01284 daysThe time in hours to reduce the serum concnetration of CTB011 and CTB012 to 50% of the maximum serum concentration at Day 0 ( pre-dose), Day 1, Day 3, Day 7, Day 14, Day 28, Day 35, Day 42, and Day 84 post-dose, using non compartmental analysis.
Time to Maximum Concentration Tmax of CTB011 and CTB01284 daysInterval from time 0 to maximum measured concentration of CTB011 and CTB012 (SYN023 components) at Day 0 ( pre-dose), Day 1, Day 3, Day 7, Day 14, Day 28, Day 35, Day 42, and Day 84 post-dose, using non compartmental analysis.

Countries

United States

Participant flow

Participants by arm

ArmCount
Imovax, SYN023
Subjects will receive SYN023 and 5 doses of Imovax rabies vaccine SYN023: The effects of SYN023 on immunogenicity of rabies vaccines Imovax and RabAvert will be compared to the effect of human rabies immune globulin. Imovax, human rabies immune globulin: Subjects will receive HyperRAB ST (human rabies immune globulin) and 5 doses of Imovax rabies vaccine RabAvert, human rabies immune globulin: Subjects will receive HyperRAB ST (human rabies immune globulin) and 5 doses of RabAvert rabies vaccine
40
Imovax, Human Rabies Immune Globulin
Subjects will receive HyperRAB ST (human rabies immune globulin) and 5 doses of Imovax rabies vaccine SYN023: The effects of SYN023 on immunogenicity of rabies vaccines Imovax and RabAvert will be compared to the effect of human rabies immune globulin. Imovax, human rabies immune globulin: Subjects will receive HyperRAB ST (human rabies immune globulin) and 5 doses of Imovax rabies vaccine RabAvert, human rabies immune globulin: Subjects will receive HyperRAB ST (human rabies immune globulin) and 5 doses of RabAvert rabies vaccine
40
RabAvert, SYN023
Subjects will receive SYN023 and 5 doses of RabAvert rabies vaccine SYN023: The effects of SYN023 on immunogenicity of rabies vaccines Imovax and RabAvert will be compared to the effect of human rabies immune globulin. Imovax, human rabies immune globulin: Subjects will receive HyperRAB ST (human rabies immune globulin) and 5 doses of Imovax rabies vaccine RabAvert, human rabies immune globulin: Subjects will receive HyperRAB ST (human rabies immune globulin) and 5 doses of RabAvert rabies vaccine
42
RabAvert, Human Rabies Immune Globulin
Subjects will receive HyperRAB ST (human rabies immune globulin) and 5 doses of RabAvert rabies vaccine SYN023: The effects of SYN023 on immunogenicity of rabies vaccines Imovax and RabAvert will be compared to the effect of human rabies immune globulin. Imovax, human rabies immune globulin: Subjects will receive HyperRAB ST (human rabies immune globulin) and 5 doses of Imovax rabies vaccine RabAvert, human rabies immune globulin: Subjects will receive HyperRAB ST (human rabies immune globulin) and 5 doses of RabAvert rabies vaccine
42
Total164

Baseline characteristics

CharacteristicImovax, SYN023Imovax, Human Rabies Immune GlobulinRabAvert, SYN023RabAvert, Human Rabies Immune GlobulinTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
0 Participants0 Participants0 Participants0 Participants0 Participants
Age, Categorical
Between 18 and 65 years
40 Participants40 Participants42 Participants42 Participants164 Participants
BMI24.41 kg/m^2
STANDARD_DEVIATION 2.87
25.74 kg/m^2
STANDARD_DEVIATION 2.96
24.92 kg/m^2
STANDARD_DEVIATION 2.66
24.39 kg/m^2
STANDARD_DEVIATION 3.14
24.86 kg/m^2
STANDARD_DEVIATION 2.93
Ethnicity (NIH/OMB)
Hispanic or Latino
37 Participants37 Participants39 Participants40 Participants153 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
3 Participants3 Participants3 Participants2 Participants11 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants
Region of Enrollment
United States
40 participants40 participants42 participants42 participants164 participants
Sex: Female, Male
Female
28 Participants27 Participants28 Participants20 Participants103 Participants
Sex: Female, Male
Male
12 Participants13 Participants14 Participants22 Participants61 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
0 / 400 / 420 / 400 / 42
other
Total, other adverse events
20 / 4025 / 4224 / 4031 / 42
serious
Total, serious adverse events
0 / 400 / 420 / 401 / 42

Outcome results

Primary

Percentage of Participants With Serum Rabies Virus Neutralizing Activity

Inhibitory activity of serum in standard rabies virus inhibition test (RFFIT: Rapid Fluorescent Foci Inhibition Test) assessed as serum RVNA ≥ 0.5 IU/mL. RFFIT is a serum neutralization (inhibition) test, which means it measures the ability of rabies specific antibodies to neutralize rabies virus and prevent the virus from infecting cells. These antibodies are called rabies virus neutralizing antibodies (RVNA).

Time frame: 112 days

Population: Per-Protocol Population (subject with complete RVNA data).

ArmMeasureValue (NUMBER)
Imovax, SYN023Percentage of Participants With Serum Rabies Virus Neutralizing Activity94.3 percentage of participants
Imovax, Human Rabies Immune GlobulinPercentage of Participants With Serum Rabies Virus Neutralizing Activity97.1 percentage of participants
RabAvert, SYN023Percentage of Participants With Serum Rabies Virus Neutralizing Activity97.1 percentage of participants
RabAvert, Human Rabies Immune GlobulinPercentage of Participants With Serum Rabies Virus Neutralizing Activity100 percentage of participants
p-value: 0.4187ANOVA
Secondary

Maximum Serum Concentration Cmax

Maximum concentration of of CTB011 and CTB012 at Day 0 ( pre-dose), Day 1, Day 3, Day 7, Day 14, Day 28, Day 35, Day 42, and Day 84 post-dose, using non compartmental analysis.

Time frame: 84 days

Population: Per-Protocol Population (subjects who received all scheduled doses of a study treatment and remained on study for at least 28 days without major protocol violation). No detectable and quantifiable levels of CTB011 and CTB012 were observed in human rabies immune globulin groups, so no PK or statistical analysis was planned.

ArmMeasureGroupValue (MEAN)Dispersion
Imovax, SYN023Maximum Serum Concentration CmaxCmax for CTB-011686 ng/mLStandard Deviation 292
Imovax, SYN023Maximum Serum Concentration CmaxCmax for CTB-012959 ng/mLStandard Deviation 449
Imovax, Human Rabies Immune GlobulinMaximum Serum Concentration CmaxCmax for CTB-011610 ng/mLStandard Deviation 240
Imovax, Human Rabies Immune GlobulinMaximum Serum Concentration CmaxCmax for CTB-012879 ng/mLStandard Deviation 400
Secondary

Percentage of Participants With Adverse Event Incidence of SYN023 Compared to HRIG in RabAvert and Imovax Reciptients

Electrocardiograms are performed to monitor subject safety. Laboratory evaluations for subject safety (adverse events) are serum chemistry evaluations, blood urea nitrogen, creatinine, bilirubin, alanine amino transferase, aspartate amino transferase, creatine phosphokinase, troponin, potassium, sodium, bicarbonate, calcium, complete blood count, platelet count, differential count, PT(prothrombin time, international normalized ratio) and PTT (partial prothrombin time and urinalyses for monitoring of safety. Additional laboratory tests may be required for evaluation of specific adverse events such as anaphylaxis and immune complex diseases. Adverse events and serious adverse events will be analyzed. A comparison of adverse event incidence between the four treatment groups will be performed.

Time frame: 42 days

ArmMeasureGroupValue (NUMBER)
Imovax, SYN023Percentage of Participants With Adverse Event Incidence of SYN023 Compared to HRIG in RabAvert and Imovax ReciptientsUnsolicited AEs60 percentage of participants
Imovax, SYN023Percentage of Participants With Adverse Event Incidence of SYN023 Compared to HRIG in RabAvert and Imovax ReciptientsSolicited AEs15 percentage of participants
Imovax, Human Rabies Immune GlobulinPercentage of Participants With Adverse Event Incidence of SYN023 Compared to HRIG in RabAvert and Imovax ReciptientsSolicited AEs47.5 percentage of participants
Imovax, Human Rabies Immune GlobulinPercentage of Participants With Adverse Event Incidence of SYN023 Compared to HRIG in RabAvert and Imovax ReciptientsUnsolicited AEs50 percentage of participants
RabAvert, SYN023Percentage of Participants With Adverse Event Incidence of SYN023 Compared to HRIG in RabAvert and Imovax ReciptientsUnsolicited AEs73.8 percentage of participants
RabAvert, SYN023Percentage of Participants With Adverse Event Incidence of SYN023 Compared to HRIG in RabAvert and Imovax ReciptientsSolicited AEs28.6 percentage of participants
RabAvert, Human Rabies Immune GlobulinPercentage of Participants With Adverse Event Incidence of SYN023 Compared to HRIG in RabAvert and Imovax ReciptientsUnsolicited AEs59.5 percentage of participants
RabAvert, Human Rabies Immune GlobulinPercentage of Participants With Adverse Event Incidence of SYN023 Compared to HRIG in RabAvert and Imovax ReciptientsSolicited AEs40.5 percentage of participants
Secondary

Percentage of Participants With Immunogenicity: Anti-CTB011 Antibodies Positive

Measurement of the development of anti-CTB011 antibodies (a component of anti-SYN023 antibodies) in participants which will be analyzed on a continuous scale as a categorical variable by treatment assignment, with descriptive statistics.

Time frame: 112 days

Population: Subjects at least 1 initial anti-SYN023 assay results

ArmMeasureValue (NUMBER)
Imovax, SYN023Percentage of Participants With Immunogenicity: Anti-CTB011 Antibodies Positive36.8 percentage of subjects
Imovax, Human Rabies Immune GlobulinPercentage of Participants With Immunogenicity: Anti-CTB011 Antibodies Positive28.6 percentage of subjects
RabAvert, SYN023Percentage of Participants With Immunogenicity: Anti-CTB011 Antibodies Positive31.4 percentage of subjects
RabAvert, Human Rabies Immune GlobulinPercentage of Participants With Immunogenicity: Anti-CTB011 Antibodies Positive21.4 percentage of subjects
Secondary

Percentage of Participants With Immunogenicity: Anti-CTB012 Antibodies Positive

Measurement of the development of anti-CTB012 antibodies (a component of anti-SYN023 antibodies) in participants which will be analyzed on a continuous scale as a categorical variable by treatment assignment, with descriptive statistics.

Time frame: 112 days

Population: Subjects at least 1 initial anti-SYN023 assay results

ArmMeasureValue (NUMBER)
Imovax, SYN023Percentage of Participants With Immunogenicity: Anti-CTB012 Antibodies Positive5.3 percentage of participants
Imovax, Human Rabies Immune GlobulinPercentage of Participants With Immunogenicity: Anti-CTB012 Antibodies Positive0 percentage of participants
RabAvert, SYN023Percentage of Participants With Immunogenicity: Anti-CTB012 Antibodies Positive0 percentage of participants
RabAvert, Human Rabies Immune GlobulinPercentage of Participants With Immunogenicity: Anti-CTB012 Antibodies Positive3.6 percentage of participants
Secondary

Serum Clearance Rate (Clp) of CTB011 and CTB012

Calculated serum clearance rates for CTB011 and CTB012 at Day 0 ( pre-dose), Day 1, Day 3, Day 7, Day 14, Day 28, Day 35, Day 42, and Day 84 post-dose, using non compartmental analysis.

Time frame: 84 days

Population: Per-Protocol Population (subjects who received all scheduled doses of a study treatment and remained on study for at least 28 days without major protocol violation). No detectable and quantifiable levels of CTB011 and CTB012 were observed in human rabies immune globulin groups, so no PK or statistical analysis was planned.

ArmMeasureGroupValue (MEAN)Dispersion
Imovax, SYN023Serum Clearance Rate (Clp) of CTB011 and CTB012clearance rates for CTB0111.18 L/dayStandard Deviation 0.62
Imovax, SYN023Serum Clearance Rate (Clp) of CTB011 and CTB012clearance rates for CTB0120.74 L/dayStandard Deviation 0.29
Imovax, Human Rabies Immune GlobulinSerum Clearance Rate (Clp) of CTB011 and CTB012clearance rates for CTB0111.14 L/dayStandard Deviation 0.59
Imovax, Human Rabies Immune GlobulinSerum Clearance Rate (Clp) of CTB011 and CTB012clearance rates for CTB0120.77 L/dayStandard Deviation 0.46
Secondary

Serum Half Lives of CTB011 and CTB012

The time in hours to reduce the serum concnetration of CTB011 and CTB012 to 50% of the maximum serum concentration at Day 0 ( pre-dose), Day 1, Day 3, Day 7, Day 14, Day 28, Day 35, Day 42, and Day 84 post-dose, using non compartmental analysis.

Time frame: 84 days

Population: Per-Protocol Population (subjects who received all scheduled doses of a study treatment and remained on study for at least 28 days without major protocol violation). No detectable and quantifiable levels of CTB011 and CTB012 were observed in human rabies immune globulin groups, so no PK or statistical analysis was planned.

ArmMeasureGroupValue (MEAN)Dispersion
Imovax, SYN023Serum Half Lives of CTB011 and CTB012t1/2 for CTB-01119.19 dayStandard Deviation 6.64
Imovax, SYN023Serum Half Lives of CTB011 and CTB012t1/2 for CTB-01220.76 dayStandard Deviation 8.73
Imovax, Human Rabies Immune GlobulinSerum Half Lives of CTB011 and CTB012t1/2 for CTB-01122.12 dayStandard Deviation 5.18
Imovax, Human Rabies Immune GlobulinSerum Half Lives of CTB011 and CTB012t1/2 for CTB-01222.86 dayStandard Deviation 8.7
Secondary

SYN023 Monoclonal Antibody Areas Under the Curve (AUC0-last, AUC0-inf) for CTB011 and CTB012)

The area under the time concentration curve for SYN023 mAb components CTB011 and CTB012 will be estimated at Day 0 ( pre-dose), Day 1, Day 3, Day 7, Day 14, Day 28, Day 35, Day 42, and Day 84 post-dose, using non compartmental analysis.

Time frame: 84 days

Population: Per-Protocol Population (subjects who received all scheduled doses of a study treatment and remained on study for at least 28 days without major protocol violation)

ArmMeasureGroupValue (MEAN)Dispersion
Imovax, SYN023SYN023 Monoclonal Antibody Areas Under the Curve (AUC0-last, AUC0-inf) for CTB011 and CTB012)AUC0-inf for CTB-01120604.56 day*ng/mLStandard Deviation 8904.6
Imovax, SYN023SYN023 Monoclonal Antibody Areas Under the Curve (AUC0-last, AUC0-inf) for CTB011 and CTB012)AUC0-t for CTB-01117549.49 day*ng/mLStandard Deviation 8300.05
Imovax, SYN023SYN023 Monoclonal Antibody Areas Under the Curve (AUC0-last, AUC0-inf) for CTB011 and CTB012)AUC0-t for CTB-01222896.71 day*ng/mLStandard Deviation 113653.68
Imovax, SYN023SYN023 Monoclonal Antibody Areas Under the Curve (AUC0-last, AUC0-inf) for CTB011 and CTB012)AUC0-inf for CTB-01230943.29 day*ng/mLStandard Deviation 11230.39
Imovax, Human Rabies Immune GlobulinSYN023 Monoclonal Antibody Areas Under the Curve (AUC0-last, AUC0-inf) for CTB011 and CTB012)AUC0-inf for CTB-01232495.98 day*ng/mLStandard Deviation 11892.98
Imovax, Human Rabies Immune GlobulinSYN023 Monoclonal Antibody Areas Under the Curve (AUC0-last, AUC0-inf) for CTB011 and CTB012)AUC0-t for CTB-01117318.95 day*ng/mLStandard Deviation 7488.84
Imovax, Human Rabies Immune GlobulinSYN023 Monoclonal Antibody Areas Under the Curve (AUC0-last, AUC0-inf) for CTB011 and CTB012)AUC0-inf for CTB-01120924.6 day*ng/mLStandard Deviation 7041.56
Imovax, Human Rabies Immune GlobulinSYN023 Monoclonal Antibody Areas Under the Curve (AUC0-last, AUC0-inf) for CTB011 and CTB012)AUC0-t for CTB-01223617.93 day*ng/mLStandard Deviation 10768.7
Secondary

Time to Maximum Concentration Tmax of CTB011 and CTB012

Interval from time 0 to maximum measured concentration of CTB011 and CTB012 (SYN023 components) at Day 0 ( pre-dose), Day 1, Day 3, Day 7, Day 14, Day 28, Day 35, Day 42, and Day 84 post-dose, using non compartmental analysis.

Time frame: 84 days

Population: Per-Protocol Population (subjects who received all scheduled doses of a study treatment and remained on study for at least 28 days without major protocol violation). No detectable and quantifiable levels of CTB011 and CTB012 were observed in human rabies immune globulin groups, so no PK or statistical analysis was planned.

ArmMeasureGroupValue (MEAN)Dispersion
Imovax, SYN023Time to Maximum Concentration Tmax of CTB011 and CTB012Tmax for CTB-0126.892 dayStandard Deviation 6.316
Imovax, SYN023Time to Maximum Concentration Tmax of CTB011 and CTB012Tmax for CTB-0116.655 dayStandard Deviation 5.957
Imovax, Human Rabies Immune GlobulinTime to Maximum Concentration Tmax of CTB011 and CTB012Tmax for CTB-0126.932 dayStandard Deviation 4.417
Imovax, Human Rabies Immune GlobulinTime to Maximum Concentration Tmax of CTB011 and CTB012Tmax for CTB-0116.686 dayStandard Deviation 4.741

Source: ClinicalTrials.gov · Data processed: Feb 21, 2026