Title

Safety and Tolerability Study of Xisomab 3G3 in Healthy Adult Subjects
A Phase 1, Single Ascending Dose, Randomized, Double-Blind, Placebo-Controlled Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of Xisomab 3G3 in Healthy Adult Subjects
  • Phase

    Phase 1
  • Study Type

    Interventional
  • Intervention/Treatment

    xisomab 3g3 ...
  • Study Participants

    21
The purpose of this study is to assess the safety, tolerability, pharmacokinetics, and pharmacodynamics of xisomab 3G3 in healthy adult subjects.
Study Started
Jun 05
2017
Primary Completion
Jan 16
2018
Study Completion
Jan 16
2018
Results Posted
May 20
2019
Last Update
Jun 05
2019

Drug xisomab 3G3- Dose 1

Participants will receive a single intravenous dose of 0.1 mg/kg xisomab 3G3.

  • Other names: AB023- Dose 1

Drug xisomab 3G3-Dose 2

Participants will receive a single intravenous dose of 0.5 mg/kg xisomab 3G3.

  • Other names: AB023- Dose 2

Drug xisomab 3G3-Dose 3

Participants will receive a single intravenous dose of 2.0 mg/kg xisomab 3G3.

  • Other names: AB023- Dose 3

Drug xisomab 3G3- Dose 4

Participants will receive a single intravenous dose of 5.0 mg/kg xisomab 3G3.

  • Other names: AB023- Dose 4

Other Placebo

Participants will receive a single intravenous dose of placebo.

xisomab 3G3- Dose 1 Experimental

Participants will receive a single intravenous dose of 0.1 mg/kg xisomab 3G3.

xisomab 3G3- Dose 2 Experimental

Participants will receive a single intravenous dose of 0.5 mg/kg xisomab 3G3.

xisomab 3G3- Dose 3 Experimental

Participants will receive a single intravenous dose of 2.0 mg/kg xisomab 3G3.

xisomab 3G3- Dose 4 Experimental

Participants will receive a single intravenous dose of 5.0 mg/kg xisomab 3G3.

Placebo Placebo Comparator

Participants will receive a single intravenous dose of placebo.

Criteria

Inclusion Criteria:

Healthy adult male and/or female (non-childbearing potential only), 18 to 48 years of age, inclusive, at screening.
Continuous non-smoker who has not used nicotine containing products for at least 3 months prior to dosing and throughout the study.
Body mass index (BMI) ≥ 19 and ≤ 29.0 (kg/m2) and weight between 50 and 125 kg (inclusive) at screening.
Medically healthy with no clinically significant medical history, physical examination, laboratory profiles, vital signs or ECGs, as deemed by the PI or designee.
Aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (ALP), lactate dehydrogenase (LDH), blood urea nitrogen (BUN), creatinine must be between the lower limit of normal (LLN; or up to 15% below LLN as not indicative of hepatic or renal disease in healthy subjects) and the upper limit of normal, inclusive, at screening and check-in.
aPTT, PT/INR, and platelets, must be within the limits of normal, inclusive, at screening and check-in.
Bleeding time must be between 2 to 8 minutes, inclusive, at check-in.

For a female of non childbearing potential: must have undergone one of the following sterilization procedures at least 6 months prior to dosing:

hysteroscopic sterilization;
bilateral tubal ligation or bilateral salpingectomy;
hysterectomy;
bilateral oophorectomy; or be postmenopausal with amenorrhea for at least 1 year prior to dosing and follicle stimulating hormone (FSH) serum levels consistent with postmenopausal status as per PI or designee judgment.

A non vasectomized male subject whose sexual partner is sterile or was advised to use one of the following during the course of the study (or prior to study as specified) and for 90 days following dosing:

Abstain from sexual intercourse;
An intrauterine device with spermicide;
A physical barrier method (e.g., male or female condom, contraceptive sponge, diaphragm, cervical cap) with spermicide;
An intravaginal system (e.g., NuvaRing®) for at least 3 months prior to dosing;
An oral, implantable, transdermal, or injectable hormonal contraceptive for at least 3 months prior to dosing.

No restrictions are required for a vasectomized male provided his vasectomy has been performed 4 months or more prior to dosing. A male who has been vasectomized less than 4 months prior to dosing must follow the same restrictions as a non vasectomized male.

If male, must agree to not donate sperm from dosing until 90 days after dosing.
Understands the study procedures in the informed consent form (ICF), and be willing and able to comply with the protocol.

Exclusion Criteria:

Subject is mentally or legally incapacitated or has significant emotional problems at the time of the screening visit or expected during the conduct of the study.
History or presence of clinically significant medical or psychiatric condition or disease in the opinion of the PI or designee.
History of any illness that, in the opinion of the PI or designee, might confound the results of the study or poses an additional risk to the subject by their participation in the study.
History or presence of drug abuse within the last 2 years prior to dosing.
History of alcoholism within the last 2 years prior to dosing or a current history of imbibing 3 or more units of alcohol per day (1 unit is equivalent to 150 mL of wine or 360 mL of beer or 45 mL of 45% alcohol).
History or presence of hypersensitivity or idiosyncratic reaction to the study drug, any ingredients of the study drug, or related compounds.
History of a clinically significant allergy of any kind including a history of allergic or hypersensitivity reactions to any drugs.

History or presence of:

Bleeding disorder(s) and/or at risk of bleeding, including relevant familial history;
Clinically significant anemia, in the opinion of the PI or designee;
Thromboembolic disease;
Bleeding in the gastrointestinal tract or central nervous system.
Allergy to rodents.
Had a minor surgery or major physical injury less than 4 weeks or major surgery less than 12 weeks prior to screening.
Was hospitalized within 2 months of dosing, unless deemed acceptable by the PI or designee.
Female subjects of childbearing potential.
Female subjects who are pregnant or lactating.
Positive urine drug or alcohol results at screening or check in.
Positive results at screening for human immunodeficiency virus (HIV), hepatitis B surface antigen (HBsAg), or hepatitis C antibodies (HCV).
Seated blood pressure is less than 90/40 mmHg or greater than 140/90 mmHg at screening.
Seated heart rate is lower than 40 bpm or higher than 100 bpm at screening.
QTcF interval is >450 msec (males) or >460 msec (females) or has ECG findings deemed abnormal with clinical significance by the PI or designee at screening.
Hemoglobin value of less than 11.5 g/dL for females and 13.0 g/dL for males, at screening or check-in.

Unable to refrain from or anticipates the use of:

Any prescription medications, non-prescription medications, herbal remedies, or vitamin supplements beginning approximately 14 days prior to dosing and throughout the study. Acetaminophen (up to 2 g per 24 hour period) may be permitted during the study and will be documented.
Any anticoagulants (i.e., warfarin, Low Molecular Weight Heparin), coagulants, anti-platelet (e.g., clopidogrel), nonsteroidal anti-inflammatory drugs and/or acetylsalicylic acid beginning approximately 28 days prior to dosing and throughout the study. Appropriate sources will be consulted by the PI or designee to confirm lack of pharmacokinetic/pharmacodynamic interaction with study drug.
Any investigational drugs or biologics beginning approximately 30 days prior to dosing and throughout the study.
Any biologics developed from chinese hamster ovary cell cultures in their life time.
Has been on a diet incompatible with the on study diet, in the opinion of the PI or designee, within the 28 days prior to dosing and throughout the study.
Donation of blood or significant blood loss within 56 days prior to dosing.
Plasma donation within 7 days prior to dosing.
Strenuous exercise/physical activity which could cause muscle aches or injury, including contact sports at any time from 72 hours before dosing until completion of the study.
Participation in another clinical study within 30 days prior to dosing. The 30 day window will be derived from the date of the last blood collection or dosing, whichever is later, in the previous study to Day 1 of the current study.
Presence of any scars, or tattoos which may obscure the injection site, as deemed by PI or designee.
Any condition or circumstance, in the opinion of the PI or designee, which may make the subject unlikely to complete the study or comply with study procedures and requirements, or may pose a risk to the subject's safety.

Summary

Xisomab 3G3- Dose 1

Xisomab 3G3- Dose 2

Xisomab 3G3- Dose 3

Xisomab 3G3- Dose 4

Placebo

All Events

Event Type Organ System Event Term Xisomab 3G3- Dose 1 Xisomab 3G3- Dose 2 Xisomab 3G3- Dose 3 Xisomab 3G3- Dose 4 Placebo

The Number of Subjects With Treatment-related Adverse Events (TEAEs) Will be Summarized Using Frequency Counts.

TEAEs will be determined by physical examination that will include assessment of skin, head, ears, eyes, nose, throat, respiratory system, cardiovascular system, gastrointestinal system, neurological condition, blood and lymphatic systems, and the musculoskeletal system.

Xisomab 3G3- Dose 1

Xisomab 3G3- Dose 2

Xisomab 3G3- Dose 3

Xisomab 3G3- Dose 4

Placebo

The Number of Subjects With Abnormal Vital Signs That Are Related to Treatment Will be Summarized Using Frequency Counts..

Vital sign measurements (body temperature, respiratory rate, blood pressure, and heart rate)

Xisomab 3G3- Dose 1

Xisomab 3G3- Dose 2

Xisomab 3G3- Dose 3

Xisomab 3G3- Dose 4

Placebo

The Number of Subjects With Abnormal Electrocardiogram That is Related to Treatment Will be Summarized Using Frequency Counts..

12-lead electrocardiogram measurement

Xisomab 3G3- Dose 1

Xisomab 3G3- Dose 2

Xisomab 3G3- Dose 3

Xisomab 3G3- Dose 4

Placebo

The Number of Subjects With Abnormal Injection Site Reaction That Are Related to Treatment Will be Summarized Using Frequency Counts..

Injection site reaction (pain, tenderness, erythema/ redness, and induration/ swelling)

Xisomab 3G3- Dose 1

Xisomab 3G3- Dose 2

Xisomab 3G3- Dose 3

Xisomab 3G3- Dose 4

Placebo

The Number of Subjects With Abnormal Laboratory Values and/ or Adverse Events That Are Related to Treatment Will be Summarized Using Frequency Counts..

Clinical laboratory tests include serum chemistry, hematology, coagulation parameters (aPTT, PT, and bleeding time), and urinalysis

Xisomab 3G3- Dose 1

Xisomab 3G3- Dose 2

Xisomab 3G3- Dose 3

Xisomab 3G3- Dose 4

Placebo

The Number of Subjects That Develop Treatment-related Immunogenicity Will be Summarized Using Frequency Counts.

Immunogenicity measured by the presence of plasma anti-drug antibodies

Xisomab 3G3- Dose 1

Day 15

Day 29 or follow up

Pre-dose (baseline)

Xisomab 3G3- Dose 2

Day 15

Day 29 or follow up

Pre-dose (baseline)

Xisomab 3G3- Dose 3

Day 15

Day 29 or follow up

Pre-dose (baseline)

Xisomab 3G3- Dose 4

Day 15

Day 29 or follow up

Pre-dose (baseline)

Placebo

Day 15

Day 29 or follow up

Pre-dose (baseline)

The Maximum Plasma Concentration (Cmax) of Xisomab 3G3 After a Single Injection Will be Measured in Each Subject.

Maximum plasma concentration of xisomab 3G3 was estimated based on plasma xisomab 3G3 concentrations. Non-compartmental PK data analysis was performed to estimate the plasma PK parameters of xisomab 3G3.

Xisomab 3G3- Dose 1

122.7
nanograms/milliliter (Geometric Mean)
Geometric Coefficient of Variation: 23.3

Xisomab 3G3- Dose 2

11210.0
nanograms/milliliter (Geometric Mean)
Geometric Coefficient of Variation: 9.1

Xisomab 3G3- Dose 3

42510.0
nanograms/milliliter (Geometric Mean)
Geometric Coefficient of Variation: 12.3

Xisomab 3G3- Dose 4

127200.0
nanograms/milliliter (Geometric Mean)
Geometric Coefficient of Variation: 2.6

The Time to Reach Maximum Plasma Concentrations of Xisomab 3G3 (Tmax) After a Single Injection Will be Measured in Each Subject.

The time to reach maximum plasma concentrations of xisomab 3G3 after a single injection was estimated based on plasma xisomab 3G3 concentrations. Non-compartmental PK data analysis was performed to estimate the plasma PK parameters of xisomab 3G3.

Xisomab 3G3- Dose 1

0.084
hours (Median)
Full Range: 0.08 to 0.09

Xisomab 3G3- Dose 2

0.649
hours (Median)
Full Range: 0.26 to 3.02

Xisomab 3G3- Dose 3

0.088
hours (Median)
Full Range: 0.08 to 0.25

Xisomab 3G3- Dose 4

0.387
hours (Median)
Full Range: 0.26 to 3.0

The Area Under the Plasma Concentration-time Curve From Time 0 to the Last Measurable Non-zero Concentration (AUC0-t), as Calculated by the Linear Trapezoidal Method, After a Single Injection of Xisomab 3G3 Will be Calculated for Each Subject.

The area under the plasma concentration-time curve from time 0 to the last measurable non-zero concentration was estimated based on plasma xisomab 3G3 concentrations. Non-compartmental PK data analysis was performed to estimate the plasma PK parameters of xisomab 3G3.

Xisomab 3G3- Dose 1

57.0
nanograms*hour/milliliter (Mean)
Standard Deviation: 46.5

Xisomab 3G3- Dose 2

361800.0
nanograms*hour/milliliter (Mean)
Standard Deviation: 21.9

Xisomab 3G3- Dose 3

5540000.0
nanograms*hour/milliliter (Mean)
Standard Deviation: 23.9

Xisomab 3G3- Dose 4

28120000.0
nanograms*hour/milliliter (Mean)
Standard Deviation: 11.8

The Area Under the Plasma Concentration-time Curve From Time 0 Extrapolated to Infinity (AUC0-inf) After a Single Injection of Xisomab 3G3 Will be Calculated for Each Subject.

The area under the plasma concentration-time curve from time 0 extrapolated to infinity (AUC0-inf) is calculated as the sum of AUC0-t plus the ratio of the last measurable plasma concentration to the elimination rate constant. Non-compartmental PK data analysis was performed to estimate the plasma PK parameters of xisomab 3G3.

Xisomab 3G3- Dose 1

184.7
nanogram*hour/milliliter (Mean)
Standard Deviation: None

Xisomab 3G3- Dose 2

363700.0
nanogram*hour/milliliter (Mean)
Standard Deviation: 21.8

Xisomab 3G3- Dose 3

5550000.0
nanogram*hour/milliliter (Mean)
Standard Deviation: 24.0

Xisomab 3G3- Dose 4

28140000.0
nanogram*hour/milliliter (Mean)
Standard Deviation: 11.8

The Percent of AUC0-inf Extrapolated (AUC%Extrap) After a Single Injection of Xisomab 3G3 Will be Calculated for Each Subject.

The percent of AUC0-inf extrapolated (AUC%extrap) is calculated by (1-AUC0-t/AUC0-inf)*100. Non-compartmental PK data analysis was performed to estimate the plasma PK parameters of xisomab 3G3.

Xisomab 3G3- Dose 1

57.3
percentage of AUC0-inf (Mean)
Standard Deviation: None

Xisomab 3G3- Dose 2

0.53
percentage of AUC0-inf (Mean)
Standard Deviation: 0.18

Xisomab 3G3- Dose 3

0.18
percentage of AUC0-inf (Mean)
Standard Deviation: 0.07

Xisomab 3G3- Dose 4

0.07
percentage of AUC0-inf (Mean)
Standard Deviation: 0.04

The Apparent First Order Terminal Elimination Rate Constant (Kel) of Xisomab 3G3 After a Single Intravenous Injection Will be Calculated for Each Subject.

The apparent first order terminal elimination rate constant will be calculated from a semi-log plot of the plasma concentration versus time curve. The parameter will be calculated by linear least squares regression analysis using the maximum number of points in the terminal log linear phase (e.g., three or more non zero plasma concentrations). Non-compartmental PK data analysis was performed to estimate the plasma PK parameters of xisomab 3G3.

Xisomab 3G3- Dose 1

0.522
1/hour (Mean)
Standard Deviation: None

Xisomab 3G3- Dose 2

0.042
1/hour (Mean)
Standard Deviation: 0.0042

Xisomab 3G3- Dose 3

0.011
1/hour (Mean)
Standard Deviation: 0.0009

Xisomab 3G3- Dose 4

0.006
1/hour (Mean)
Standard Deviation: 0.0018

The Apparent First Order Terminal Elimination Half-life (T1/2) of Xisomab 3G3 After a Single Intravenous Injection Will be Calculated for Each Subject.

The apparent first order terminal elimination half-life will be calculated as 0.693/Kel. Non-compartmental PK data analysis was performed to estimate the plasma PK parameters of xisomab 3G3.

Xisomab 3G3- Dose 1

1.33
hours (Mean)
Standard Deviation: None

Xisomab 3G3- Dose 2

16.64
hours (Mean)
Standard Deviation: 1.56

Xisomab 3G3- Dose 3

60.63
hours (Mean)
Standard Deviation: 4.45

Xisomab 3G3- Dose 4

121.49
hours (Mean)
Standard Deviation: 40.69

The Apparent Total Plasma Clearance (CL) of Xisomab 3G3 After a Single Intravenous Injection Will be Calculated for Each Subject.

The apparent total plasma clearance will be calculated as [Dose/AUC0-inf]. Non-compartmental PK data analysis was performed to estimate the plasma PK parameters of xisomab 3G3.

Xisomab 3G3- Dose 1

37.46
Liters/hour (Mean)
Standard Deviation: None

Xisomab 3G3- Dose 2

0.094
Liters/hour (Mean)
Standard Deviation: 0.018

Xisomab 3G3- Dose 3

0.026
Liters/hour (Mean)
Standard Deviation: 0.003

Xisomab 3G3- Dose 4

0.014
Liters/hour (Mean)
Standard Deviation: 0.003

The Total Apparent Volume of Distribution (Vss) of Xisomab 3G3 After a Single Intravenous Injection Will be Calculated for Each Subject.

The total apparent volume of distribution (Vss) will be calculated as the mean residence time x clearance. Non-compartmental PK data analysis was performed to estimate the plasma PK parameters of xisomab 3G3.

Xisomab 3G3- Dose 1

69.11
Liters (Mean)
Standard Deviation: None

Xisomab 3G3- Dose 2

2.52
Liters (Mean)
Standard Deviation: 0.59

Xisomab 3G3- Dose 3

3.72
Liters (Mean)
Standard Deviation: 0.42

Xisomab 3G3- Dose 4

4.31
Liters (Mean)
Standard Deviation: 0.75

The Effect of a Single Intravenous Dose of Xisomab 3G3 on the Activated Partial Thromboplastin Time (aPTT) in Healthy Adult Subjects Will be Measured.

Activated partial thromboplastin time (aPTT) will be used as a surrogate pharmacodynamic marker.

Xisomab 3G3- Dose 1

Day 15

26.8
seconds (Mean)
Standard Deviation: 2.1

Day 1, Hour 1

32.8
seconds (Mean)
Standard Deviation: 3.8

Day 2

29.0
seconds (Mean)
Standard Deviation: 2.3

Day 22

26.5
seconds (Mean)
Standard Deviation: 2.4

Day 29

27.0
seconds (Mean)
Standard Deviation: 2.3

Day 4

28.3
seconds (Mean)
Standard Deviation: 2.6

Day 8

27.3
seconds (Mean)
Standard Deviation: 2.1

Follow Up

26.8
seconds (Mean)
Standard Deviation: 1.5

pre-dose

27.0
seconds (Mean)
Standard Deviation: 1.8

Xisomab 3G3- Dose 2

Day 15

27.5
seconds (Mean)
Standard Deviation: 2.1

Day 1, Hour 1

48.3
seconds (Mean)
Standard Deviation: 0.5

Day 2

50.5
seconds (Mean)
Standard Deviation: 5.8

Day 22

27.5
seconds (Mean)
Standard Deviation: 2.6

Day 29

27.5
seconds (Mean)
Standard Deviation: 2.1

Day 4

48.8
seconds (Mean)
Standard Deviation: 6.5

Day 8

30.5
seconds (Mean)
Standard Deviation: 3.9

Follow Up

27.3
seconds (Mean)
Standard Deviation: 1.7

pre-dose

26.5
seconds (Mean)
Standard Deviation: 1.3

Xisomab 3G3- Dose 3

Day 15

47.0
seconds (Mean)
Standard Deviation: 2.9

Day 1, Hour 1

53.3
seconds (Mean)
Standard Deviation: 5.7

Day 2

52.5
seconds (Mean)
Standard Deviation: 4.8

Day 22

39.5
seconds (Mean)
Standard Deviation: 6.6

Day 29

30.3
seconds (Mean)
Standard Deviation: 2.9

Day 4

49.8
seconds (Mean)
Standard Deviation: 3.9

Day 8

47.3
seconds (Mean)
Standard Deviation: 2.2

Follow Up

28.3
seconds (Mean)
Standard Deviation: 1.5

pre-dose

26.3
seconds (Mean)
Standard Deviation: 2.6

Xisomab 3G3- Dose 4

Day 15

48.0
seconds (Mean)
Standard Deviation: 6.5

Day 1, Hour 1

57.3
seconds (Mean)
Standard Deviation: 7.8

Day 2

55.8
seconds (Mean)
Standard Deviation: 6.9

Day 22

48.3
seconds (Mean)
Standard Deviation: 6.3

Day 29

47.3
seconds (Mean)
Standard Deviation: 5.0

Day 4

52.3
seconds (Mean)
Standard Deviation: 5.6

Day 8

49.8
seconds (Mean)
Standard Deviation: 5.3

Follow Up

28.0
seconds (Mean)
Standard Deviation: 2.2

pre-dose

27.5
seconds (Mean)
Standard Deviation: 1.7

Placebo

Day 15

29.0
seconds (Mean)
Standard Deviation: 1.2

Day 1, Hour 1

29.4
seconds (Mean)
Standard Deviation: 1.7

Day 2

28.8
seconds (Mean)
Standard Deviation: 2.0

Day 22

28.8
seconds (Mean)
Standard Deviation: 0.8

Day 29

29.2
seconds (Mean)
Standard Deviation: 1.3

Day 4

27.3
seconds (Mean)
Standard Deviation: 2.1

Day 8

28.6
seconds (Mean)
Standard Deviation: 1.1

Follow Up

29.2
seconds (Mean)
Standard Deviation: 1.3

pre-dose

29.4
seconds (Mean)
Standard Deviation: 1.7

Total

21
Participants

Age, Continuous

36.1
years (Mean)
Full Range: 22.0 to 47.0

Ethnicity (NIH/OMB)

Race (NIH/OMB)

Region of Enrollment

Sex: Female, Male

Overall Study

Xisomab 3G3- Dose 1

Xisomab 3G3- Dose 2

Xisomab 3G3- Dose 3

Xisomab 3G3- Dose 4

Placebo