This is a phase 1, randomized, placebo-controlled, double-blind, single ascending dose study of IV VIS649 in healthy subjects. VIS649 is a monoclonal immunoglobulin G2 (IgG2) antibody targeting the B-cell growth factor APRILL. The study will enroll up to 45 subjects and will be conducted in up to 5 sequential dosing cohorts at four different dose levels, enrolling 9 subjects per cohort. Subjects will be randomized to VIS649 or placebo in a ratio of 7:2 (7 active, 2 placebo). Safety, pharmacokinetic (PK) and pharmacodynamic (PD) data from the initial cohorts will be assessed.
On Day 1, a single dose of VIS649 or placebo will be administered IV. Pharmacokinetics sampling will start with a collection prior to the start of infusion and at multiple timepoints throughout the study. Pharmacodynamics sampling will occur at baseline and multiple timepoints throughout the study. Sentinel subjects will be utilized; the first two subjects in each cohort will be randomized to receive either VIS649 or placebo and will receive study drug at least 24 hours before the remaining subjects in the cohort are dosed. The safety profile of these subjects over the 24 hour post-administration period will be reviewed to determine whether it is appropriate to proceed with enrollment of the remaining subjects in the cohort as planned. This will occur for each dose escalation. The maximum duration of participation (Screening through End-of-study) for individual subjects will be approximately 20 weeks (5 months). The scheduled final visit will occur 16 weeks post-dosing (112 days).
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
51
California Clinical Trials Medical Group
Glendale, California, United States
Overall Summary of Treatment Emergent Adverse Events
The number adverse events (AEs), serious adverse events (SAEs), and drug related events following administration of VIS649. Safety will be assessed via AE severity per CTCAE v4.0
Time frame: Baseline to day 112
Cmax: Maximum Serum VIS649 Concentration Determined Directly From the Concentration-time Profile. All Participants
The maximum serum concentration (Cmax) of VIS649 determined by an electrochemiluminescence (ECL) immunoassay and analyzed by standard non-compartmental pharmacokinetic methods. All participants
Time frame: 0, 1, 2, 8, and 24-hours post-dose, Day 3, 7, 14, 28, 42, 56, 70, and 112.
Tmax: Time to the Maximum Serum VIS649 Concentration Determined Directly From the Concentration-time Profile. All Participant
The time to the maximum serum concentration (tmax) of VIS649 as determined by an electrochemiluminescence (ECL) immunoassay and analyzed by standard non-compartmental pharmacokinetic methods. All participants
Time frame: 0, 1, 2, 8, and 24-hours post-dose, Day 3, 7, 14, 28, 42, 56, 70, and 112.
The Pharmacokinetic Exposure Profiles of VIS649 in Serum. All Participants
Summary of the pharmacokinetic profiles of VIS649 exposure in serum for all participants. AUC0-112 presents the area under the concentration time curve from pre-dose (time 0) to the concentration on day 112. AUC0-last presents the area under the concentration time curve from pre-dose (time 0) to the last quantifiable concentration. AUC0-inf presents the area under the concentration time curve from pre-dose (time 0) extrapolated to infinite time.
Time frame: 0, 1, 2, 8, and 24-hours post-dose, Day 3, 7, 14, 28, 42, 56, 70, and 112.
T 1/2 The Terminal Elimination Half Life of VIS649 in Serum Samples. All Participants
The terminal elimination half life (t1/2) of VIS649 from the concentration-time profile as determined by an electrochemiluminescence (ECL) immunoassay and analyzed by standard non-compartmental pharmacokinetic methods.
Time frame: 0, 1, 2, 8, and 24-hours post-dose, Day 3, 7, 14, 28, 42, 56, 70, and 112.
CL: The Clearance of VIS649 in Serum Samples Calculated Using Exposure Extrapolated to Infinity by Dose.
The clearance rate (CL) of VIS649 using the exposure calculated to infinity of VIS649 as determined by an electrochemiluminescence (ECL) immunoassay and analyzed by standard non-compartmental pharmacokinetic methods. All participants.
Time frame: Day 1 to day 112
Vd: The Volume of Distribution of VIS649 in Serum Samples. All Participants
The volume of distribution of VIS649 as determined by an electrochemiluminescence (ECL) immunoassay and analyzed by standard non-compartmental pharmacokinetic methods. All participants.
Time frame: Day 1 to day 112
Cmax: Maximum Serum VIS649 Concentration Determined Directly From the Time Profile. Japanese Participants
The maximum serum concentration (Cmax) of VIS649 determined by an electrochemiluminescence (ECL) immunoassay and analyzed by standard non-compartmental pharmacokinetic methods. Japanese participants
Time frame: 0, 1, 2, 8, and 24-hours post-dose, Day 3, 7, 14, 28, 42, 56, 70, and 112.
Tmax: Time to the Maximum Serum VIS649 Concentration Determined Directly From the Concentration-time Profile. Japanese Participants
The time to the maximum serum concentration (tmax) of VIS649 as determined by an electrochemiluminescence (ECL) immunoassay and analyzed by standard non-compartmental pharmacokinetic methods. Japanese participants.
Time frame: 0, 1, 2, 8, and 24-hours post-dose, Day 3, 7, 14, 28, 42, 56, 70, and 112.
The Pharmacokinetic Exposure Profiles of VIS649 in Serum. Japanese Participants
AUC0-112 presents the area under the concentration time curve from pre-dose (time 0) to the concentration on day 112. AUC0-last presents the area under the concentration time curve from pre-dose (time 0) to the last quantifiable concentration. AUC0-inf presents the area under the concentration time curve from pre-dose (time 0) extrapolated to infinite time.
Time frame: 0, 1, 2, 8, and 24-hours post-dose, Day 3, 7, 14, 28, 42, 56, 70, and 112.
T1/2 The Terminal Elimination Half Life of VIS649 in Serum Samples. Japanese Participants
The terminal elimination half life (t1/2) of VIS649 from the concentration-time profile as determined by an electrochemiluminescence (ECL) immunoassay and analyzed by standard non-compartmental pharmacokinetic methods.
Time frame: 0, 1, 2, 8, and 24-hours post-dose, Day 3, 7, 14, 28, 42, 56, 70, and 112.
CL: The Clearance of VIS649 in Serum Samples Calculated Using Exposure Extrapolated to Infinity by Dose. Japanese Participants
The clearance rate (CL) of VIS649 using the exposure calculated to infinity of VIS649 as determined by an electrochemiluminescence (ECL) immunoassay and analyzed by standard non-compartmental pharmacokinetic methods.
Time frame: Day 1 to day 112.
Vd: The Volume of Distribution of VIS649 in Serum Samples. Japanese Participants
The volume of distribution of VIS649 as determined by an electrochemiluminescence (ECL) immunoassay and analyzed by standard non-compartmental pharmacokinetic methods.
Time frame: Day 1 to day 112.
Cmax: Maximum Serum VIS649 Concentration Determined Directly From the Concentration-time Profile. Non-Japanese Participants
The maximum serum concentration (Cmax) of VIS649 determined by an electrochemiluminescence (ECL) immunoassay and analyzed by standard non-compartmental pharmacokinetic methods.
Time frame: 0, 1, 2, 8, and 24-hours post-dose, Day 3, 7, 14, 28, 42, 56, 70, and 112.
Tmax: Time to the Maximum Serum VIS649 Concentration Determined Directly From the Concentration-time Profile. Non-Japanese Participants
The time to the maximum serum concentration (tmax) of VIS649 as determined by an electrochemiluminescence (ECL) immunoassay and analyzed by standard non-compartmental pharmacokinetic methods.
Time frame: 0, 1, 2, 8, and 24-hours post-dose, Day 3, 7, 14, 28, 42, 56, 70, and 112.
The Pharmacokinetic Exposure Profiles of VIS649 in Serum. Non-Japanese Participants
Summary of the pharmacokinetic profiles of VIS649 exposure in serum for non-Japanese participants. AUC0-112 presents the area under the concentration time curve from pre-dose (time 0) to the concentration on day 112. AUC0-last presents the area under the concentration time curve from pre-dose (time 0) to the last quantifiable concentration. AUC0-inf presents the area under the concentration time curve from pre-dose (time 0) extrapolated to infinite time.
Time frame: 0, 1, 2, 8, and 24-hours post-dose, Day 3, 7, 14, 28, 42, 56, 70, and 112.
T1/2 The Terminal Elimination Half Life of VIS649 in Serum Samples. Non-Japanese Participants
The terminal elimination half life (t1/2) of VIS649 from the concentration-time profile as determined by an electrochemiluminescence (ECL) immunoassay and analyzed by standard non-compartmental pharmacokinetic methods. Non-Japanese participants.
Time frame: 0, 1, 2, 8, and 24-hours post-dose, Day 3, 7, 14, 28, 42, 56, 70, and 112.
CL: The Clearance of VIS649 in Serum Samples Calculated Using Exposure Extrapolated to Infinity by Dose. Non-Japanese Participants
The clearance rate (CL) of VIS649 using the exposure calculated to infinity of VIS649 as determined by an electrochemiluminescence (ECL) immunoassay and analyzed by standard non-compartmental pharmacokinetic methods.
Time frame: Day 1 to day 112.
Vd: The Volume of Distribution of VIS649 in Serum Samples. Non-Japanese Participants
The volume of distribution of VIS649 as determined by an electrochemiluminescence (ECL) immunoassay and analyzed by standard non-compartmental pharmacokinetic methods.
Time frame: Day 1 to day 112.
Pharmacodynamic Effect of VIS649 on Total Immunoglobulin G Species. All Participants
The effect of VIS649 treatment on total IgG levels in serum, weekly observations from baseline to Week 24
Time frame: From baseline to Week 24
Pharmacodynamic Effect of VIS649 on Total Immunoglobulin A Species. All Participants
The effect of VIS649 treatment on total IgA levels in serum, weekly observations from Baseline to Week 24
Time frame: From baseline to Week 24
Pharmacodynamic Effect of VIS649 on Total Immunoglobulin M Species. All Participants
The effect of VIS649 treatment on total IgM levels in serum, weekly observations from Baseline to Week 24
Time frame: From baseline to Week 24
Pharmacodynamic Effect of VIS649 on Circulating CD16 +CD56 (Natural Killer) Cells for All Participants in Cohorts 1-4
The effect of VIS649 treatment on the population of circulating CD16 +CD56 (Natural killer) cells in serum for all participants in cohorts 1-4.
Time frame: From baseline to Week 24
Pharmacodynamic Effect of VIS649 on Circulating CD19 (B Cells) for All Participants in Cohorts 1-4
The effect of VIS649 treatment on the population of circulating CD19 (B Cells) in serum for all participants in cohorts 1-4.
Time frame: From baseline to Week 24
Pharmacodynamic Effect of VIS649 on Circulating CD4 T Cells for All Participants in Cohorts 1-4
The effect of VIS649 treatment on the population of circulating CD4 T cells in serum for all participants in cohorts 1-4.
Time frame: From baseline to Week 24
Pharmacodynamic Effect of VIS649 on Circulating CD3 T Cells for All Participants in Cohorts 1-4
The effect of VIS649 treatment on the population of circulating CD3 T cells in serum for all participants in cohorts 1-4.
Time frame: From baseline to Week 24
Pharmacodynamic Effect of VIS649 on Circulating CD8 T Cells for All Participants in Cohorts 1-4
The effect of VIS649 treatment on the population of circulating CD8 T cells in serum for all participants in cohorts 1-4.
Time frame: From baseline to Week 24
Summary of Anti -VIS649 Anti-drug Antibodies (ADA)
Summary of Anti -VIS649 anti-drug antibodies (ADA) by treatment group, all participants
Time frame: Baseline to Day 112
Summary of Anti -VIS649 Antibody (ADA) Titer by Treatment
Summary of Anti -VIS649 antibody (ADA) titer by treatment, all participants with ADA positive results
Time frame: Baseline to Day 112
Cmax: Maximum Serum VIS649 Concentration Determined Directly From the Concentration-time Profile. All Participants by Anti-VIS649 Status
The maximum serum concentration (Cmax) of VIS649 determined by an electrochemiluminescence (ECL) immunoassay and analyzed by standard non-compartmental pharmacokinetic methods. All participants by anti-VIS649 status (positive or negative).
Time frame: 0, 1, 2, 8, and 24-hours post-dose, Day 3, 7, 14, 28, 42, 56, 70, and 112.
Tmax: Time to the Maximum Serum VIS649 Concentration Determined Directly From the Concentration-time Profile. All Participants by Anti-VIS649 Status
The time to the maximum serum concentration (tmax) of VIS649 as determined by an electrochemiluminescence (ECL) immunoassay and analyzed by standard non-compartmental pharmacokinetic methods. All participants by anti-VIS649 status (positive or negative).
Time frame: 0, 1, 2, 8, and 24-hours post-dose, Day 3, 7, 14, 28, 42, 56, 70, and 112.
The Pharmacokinetic Exposure Profiles of VIS649 in Serum Samples, All Participants by Anti-VIS649 Antibody Status.
Summary of the pharmacokinetic profiles of VIS649 exposure in serum for all participants based on their anti-VIS649 antibody status (negative/positive). AUC0-112 presents the area under the concentration time curve from pre-dose (time 0) to the concentration on day 112. AUC0-last presents the area under the concentration time curve from pre-dose (time 0) to the last quantifiable concentration. AUC0-inf presents the area under the concentration time curve from pre-dose (time 0) extrapolated to infinite time.
Time frame: 0, 1, 2, 8, and 24-hours post-dose, Day 3, 7, 14, 28, 42, 56, 70, and 112.
T1/2 The Terminal Elimination Half Life of VIS649 in Serum Samples. All Participants by Anti-VIS649 Antibody Status.
The terminal elimination half life (t1/2) of VIS649 from the concentration-time profile as determined by an electrochemiluminescence (ECL) immunoassay and analyzed by standard non-compartmental pharmacokinetic methods. All participants by anti-VIS649 antibody status (negative/positive).
Time frame: 0, 1, 2, 8, and 24-hours post-dose, Day 3, 7, 14, 28, 42, 56, 70, and 112.
CL: The Clearance of VIS649 in Serum Samples Calculated Using Exposure Extrapolated to Infinity by Dose. All Participants by Anti-VIS649 Antibody Status.
The clearance rate (CL) of VIS649 using the exposure calculated to infinity of VIS649 as determined by an electrochemiluminescence (ECL) immunoassay and analyzed by standard non-compartmental pharmacokinetic methods. All participants by anti-VIS649 antibody status (positive or negative)..
Time frame: 112 days
Vd: The Volume of Distribution of VIS649 in Serum Samples. All Participants by Anti-VIS649 Antibody Status (Positive or Negative)
The calculated volume of distribution of VIS649 as determined by an electrochemiluminescence (ECL) immunoassay and analyzed by standard non-compartmental pharmacokinetic methods. All participants by anti-VIS649 antibody status (positive or negative).
Time frame: 112 days
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