This study is evaluating ARD001, an investigational medicine being developed for the treatment of hemophilia A. In Phase 1, healthy adult participants will receive a single dose of ARD001 or placebo to assess its safety and tolerability, how it moves through the body, its effects on blood coagulation, and whether the body develops antibodies against it. If the Phase 1 results support further study and the required regulatory and ethics approvals are obtained, Phase 2 will evaluate repeated doses of ARD001 in adults with hemophilia A. Phase 2 is not currently open for enrollment. The study is designed to determine whether ARD001 can be administered with acceptable safety and to identify doses suitable for further clinical development.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Enrollment
20
ARD001 will be administered subcutaneously as a single dose of 0.01, 0.1, or 0.3 mg/kg in Phase 1. A multiple-dose regimen is planned for Phase 2 and will be specified in a protocol amendment before Phase 2 initiation
The corresponding placebo will be administered subcutaneously as a single dose in Phase 1
SingHealth Investigational Medicine Unit
Singapore, Singapore
RECRUITINGPhase 1: Number of Participants With Treatment-Emergent Adverse Events, Serious Adverse Events, and Adverse Events of Special Interest
Number and percentage of participants with treatment-emergent adverse events, serious adverse events, and adverse events of special interest will be summarised.
Time frame: From first dose through Day 29 for Cohort A1 and Day 113 for Cohorts A2 and A3.
Observed Body Weight and Change From Baseline
Observed body weight values and changes from baseline will be summarized.
Time frame: Baseline and protocol-specified post-dose assessment time points through Day 29 for Cohort A1 and Day 113 for Cohorts A2 and A3.
Number of Participants With Clinically Significant Changes From Baseline in Hematology Parameters
Hematology assessments include white blood cell count with differential (neutrophils, lymphocytes, monocytes, eosinophils and basophils), red blood cell count and indices (mean corpuscular volume, mean corpuscular hemoglobin and mean corpuscular hemoglobin concentration), hemoglobin, and platelet count. The number of participants with clinically significant changes from baseline in hematology parameters will be summarized. Clinical significance will be determined by the investigator.
Time frame: At baseline and at protocol-specified post-dose assessment time points through Day 29 for Cohort A1 and Day 113 for Cohorts A2 and A3.
Number of Participants With Clinically Significant Changes From Baseline in Serum Chemistry Parameters
Serum chemistry assessments include creatinine, blood urea nitrogen, sodium, potassium, magnesium, phosphate, calcium, chloride, bicarbonate, fasting blood glucose, high-density lipoprotein, low-density lipoprotein, triglycerides, alanine aminotransferase, aspartate aminotransferase, alkaline phosphatase, total and direct bilirubin, thyroid-stimulating hormone, free thyroxine, lactate dehydrogenase, creatine kinase, C-reactive protein, and uric acid. The number of participants with clinically significant changes from baseline in serum chemistry parameters will be summarized. Clinical significance will be determined by the investigator.
Time frame: At baseline and at protocol-specified post-dose assessment time points through Day 29 for Cohort A1 and Day 113 for Cohorts A2 and A3.
Number of Participants With Clinically Significant Changes From Baseline in Urinalysis Parameters
Urinalysis assessments include dipstick measurements of pH, protein, glucose, ketone, and blood, with reflex comprehensive urinalysis if abnormal as specified in the protocol. The number of participants with clinically significant changes from baseline in urinalysis parameters will be summarized. Clinical significance will be determined by the investigator.
Time frame: At baseline and at protocol-specified post-dose assessment time points through Day 29 for Cohort A1 and Day 113 for Cohorts A2 and A3.
Number of Participants With Clinically Significant Changes From Baseline in Coagulation Parameters
Coagulation assessments include prothrombin time (PT), international normalized ratio (INR), activated partial thromboplastin time (aPTT), fibrinogen, D-dimer, and thrombin time. The number of participants with clinically significant changes from baseline in coagulation parameters will be summarized. Clinical significance will be determined by the investigator.
Time frame: At baseline and at protocol-specified post-dose assessment time points through Day 29 for Cohort A1 and Day 113 for Cohorts A2 and A3.
Observed Values and Change From Baseline in Systolic Blood Pressure
Observed systolic blood pressure values and changes from baseline will be summarised.
Time frame: At baseline and at protocol-specified post-dose assessment time points through Day 29 for Cohort A1 and Day 113 for Cohorts A2 and A3.
Observed Values and Change From Baseline in Diastolic Blood Pressure
Time frame: At baseline and at protocol-specified post-dose assessment time points through Day 29 for Cohort A1 and Day 113 for Cohorts A2 and A3.
Observed Values and Change From Baseline in Pulse Rate
Time frame: At baseline and at protocol-specified post-dose assessment time points through Day 29 for Cohort A1 and Day 113 for Cohorts A2 and A3.
Observed Values and Change From Baseline in Respiratory Rate
Time frame: At baseline and at protocol-specified post-dose assessment time points through Day 29 for Cohort A1 and Day 113 for Cohorts A2 and A3.
Observed Values and Change From Baseline in Body Temperature
Time frame: At baseline and at protocol-specified post-dose assessment time points through Day 29 for Cohort A1 and Day 113 for Cohorts A2 and A3.
Observed Values and Change From Baseline in PR Interval
Observed PR interval values and changes from baseline obtained from protocol-specified 12-lead electrocardiograms will be summarised.
Time frame: At baseline and at protocol-specified post-dose assessment time points through Day 29 for Cohort A1 and Day 113 for Cohorts A2 and A3.
Observed Values and Change From Baseline in QRS Duration
Observed QRS duration values and changes from baseline obtained from protocol-specified 12-lead electrocardiograms will be summarised.
Time frame: At baseline and at protocol-specified post-dose assessment time points through Day 29 for Cohort A1 and Day 113 for Cohorts A2 and A3.
Observed Values and Change From Baseline in QT Interval
Observed uncorrected QT interval values and changes from baseline obtained from protocol-specified 12-lead electrocardiograms will be summarised.
Time frame: At baseline and at protocol-specified post-dose assessment time points through Day 29 for Cohort A1 and Day 113 for Cohorts A2 and A3.
Observed Values and Change From Baseline in QTcF Interval
Observed QT interval values corrected using Fridericia's formula and changes from baseline obtained from protocol-specified 12-lead electrocardiograms will be summarised.
Time frame: At baseline and at protocol-specified post-dose assessment time points through Day 29 for Cohort A1 and Day 113 for Cohorts A2 and A3.
Maximum Observed Serum Concentration of ARD001
Maximum observed serum concentration (Cmax) of ARD001 derived using noncompartmental analysis.
Time frame: From pre-dose through protocol-specified pharmacokinetic sampling through Day 29 for Cohort A1 and Day 113 for Cohorts A2 and A3.
Time to Maximum Observed Serum Concentration of ARD001
Area under the serum concentration-time curve from time zero to the last quantifiable concentration (AUC0-last) of ARD001 derived using noncompartmental analysis.
Time frame: Time of maximum observed serum concentration (Tmax) of ARD001 derived using noncompartmental analysis.
Area Under the Serum Concentration-Time Curve Extrapolated to Infinity
Area under the serum concentration-time curve from time zero extrapolated to infinity (AUC0-inf) of ARD001 derived using noncompartmental analysis.
Time frame: From pre-dose through protocol-specified pharmacokinetic sampling through Day 29 for Cohort A1 and Day 113 for Cohorts A2 and A3.
Mean Residence Time From Time Zero to Infinity of ARD001
Mean residence time from time zero to infinity (MRT0-inf) of ARD001 derived using noncompartmental analysis.
Time frame: From pre-dose through protocol-specified pharmacokinetic sampling through Day 29 for Cohort A1 and Day 113 for Cohorts A2 and A3.
Lag Time Before the First Measurable Serum Concentration of ARD001
Time before the first measurable non-zero serum concentration (Tlag) of ARD001 derived using noncompartmental analysis.
Time frame: From pre-dose through protocol-specified pharmacokinetic sampling through Day 29 for Cohort A1 and Day 113 for Cohorts A2 and A3.
Terminal Elimination Rate Constant of ARD001
Apparent terminal elimination rate constant (λz) of ARD001 derived from the terminal portion of the serum concentration-time profile using noncompartmental analysis.
Time frame: From pre-dose through protocol-specified pharmacokinetic sampling through Day 29 for Cohort A1 and Day 113 for Cohorts A2 and A3.
Apparent Terminal Elimination Half-Life of ARD001
Apparent terminal elimination half-life (t1/2) of ARD001 derived using noncompartmental analysis.
Time frame: From pre-dose through protocol-specified pharmacokinetic sampling through Day 29 for Cohort A1 and Day 113 for Cohorts A2 and A3.
Apparent Volume of Distribution During the Terminal Phase of ARD001
Apparent volume of distribution during the terminal phase following subcutaneous administration (Vz/F) of ARD001 derived using noncompartmental analysis.
Time frame: From pre-dose through protocol-specified pharmacokinetic sampling through Day 29 for Cohort A1 and Day 113 for Cohorts A2 and A3.
Apparent Clearance of ARD001
Apparent clearance following subcutaneous administration (CL/F) of ARD001 derived using noncompartmental analysis.
Time frame: From pre-dose through protocol-specified pharmacokinetic sampling through Day 29 for Cohort A1 and Day 113 for Cohorts A2 and A3.
Area Under the Serum Concentration-Time Curve From Time Zero to the Last Quantifiable Concentration
Area under the serum concentration-time curve from time zero to the last quantifiable concentration (AUC0-last) of ARD001 derived using noncompartmental analysis.
Time frame: From pre-dose through protocol-specified pharmacokinetic sampling through Day 29 for Cohort A1 and Day 113 for Cohorts A2 and A3.
Number of Participants With Treatment-Emergent Anti-Drug Antibodies to ARD001
Number and percentage of participants with treatment-induced or treatment-boosted binding anti-drug antibodies to ARD001.
Time frame: From baseline through Day 29 for Cohort A1 and Day 113 for Cohorts A2 and A3.
Time to First Detection of Anti-Drug Antibodies to ARD001
Time from first dose to the first scheduled post-baseline sample with a positive binding anti-drug antibody result.
Time frame: From first dose through Day 29 for Cohort A1 and Day 113 for Cohorts A2 and A3.
Anti-Drug Antibody Titre to ARD001
Binding anti-drug antibody titre in participants with a positive anti-drug antibody result.
Time frame: From baseline through Day 29 for Cohort A1 and Day 113 for Cohorts A2 and A3.
Persistence of Anti-Drug Antibodies to ARD001
Persistence of binding anti-drug antibodies to ARD001 based on positive results at protocol-specified post-dose assessment time points.
Time frame: From baseline through Day 29 for Cohort A1 and Day 113 for Cohorts A2 and A3.
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