This was a single-center, double-blind, randomized, active control, single dose escalation study to evaluate the safety, tolerability, pharmacokinetics (PK), and pharmacodynamics (PD) profiles of P1101 in 48 healthy volunteers.
The primary objectives were to determine the safety and tolerability of single ascending subcutaneous doses of P1101 and to determine the pharmacokinetics of P1101 in single ascending subcutaneous doses of P1101 in healthy male subjects. The secondary objectives were to evaluate the occurrence of side effects in healthy subjects receiving either P1101 or PEGASYS; to compare the pharmacokinetic parameters for P1101 and PEGASYS; and to assess the effect of P1101 on the biomarkers 2',5' oligoadenylate synthetase and neopterin. A total of 48 subjects were enrolled to receive subcutaneous injection of P1101 in the dose level of 24 , 48 , 90 , 180 , 225 , or 270 mcg or to receive subcutaneous injection of 180 mcg Pegasys.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
OTHER
Masking
DOUBLE
Enrollment
48
P1101 solution for injection, 180 mcg/mL, 1.2 mL/vial;Dose/subject: 24 mcg subcutaneously.
P1101 solution for injection, 180 mcg/mL, 1.2 mL/vial;Dose/subject: 48 mcg subcutaneously.
P1101 solution for injection, 180 mcg/mL, 1.2 mL/vial;Dose/subject: 90 mcg subcutaneously.
Anapharm
Québec, Canada
Adverse Event
Frequency and severity of all adverse events among subjects, including frequency and severity of drug-related adverse events.
Time frame: Through study Day 35
AUC of P1101 and Pegasys
Area under the serum concentration-time curve from time 0 to infinity
Time frame: Samples were collected within 1 hour pre-dose, and at 1, 3, 6, 9, 12, 16, 24, 36, 48, 72, 96, 120, 144, 168, 192, 240, 288, 336, 504, and 672 hours post-dose.
AUC0-t of P1101 and Pegasys
Area under the serum concentration-time curve from time zero to the last measurable concentration (AUC0-t)
Time frame: Samples were collected within 1 hour pre-dose, and at 1, 3, 6, 9, 12, 16, 24, 36, 48, 72, 96, 120, 144, 168, 192, 240, 288, 336, 504, and 672 hours post-dose.
Cmax of P1101 and Pegasys
Maximum serum concentration; the highest concentration observed during a dosage interval.
Time frame: Samples were collected within 1 hour pre-dose, and at 1, 3, 6, 9, 12, 16, 24, 36, 48, 72, 96, 120, 144, 168, 192, 240, 288, 336, 504, and 672 hours post-dose.
Ct of P1101 and Pegasys
The last measured serum concentration, the last concentration above the lower limit of quantification following dose
Time frame: Samples were collected within 1 hour pre-dose, and at 1, 3, 6, 9, 12, 16, 24, 36, 48, 72, 96, 120, 144, 168, 192, 240, 288, 336, 504, and 672 hours post-dose.
Tmax of P1101 and Pegasys
The time that Cmax was observed
Time frame: Samples were collected within 1 hour pre-dose, and at 1, 3, 6, 9, 12, 16, 24, 36, 48, 72, 96, 120, 144, 168, 192, 240, 288, 336, 504, and 672 hours post-dose.
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P1101 solution for injection, 180 mcg/mL, 1.2 mL/vial;Dose/subject: 180 mcg subcutaneously.
P1101 solution for injection, 180 mcg/mL, 1.2 mL/vial;Dose/subject: 225 mcg subcutaneously.
P1101 solution for injection, 180 mcg/mL, 1.2 mL/vial;Dose/subject: 270 mcg subcutaneously.
Pegasys for injection, 180 mcg/mL, 1.0 mL/vial, Dose/subject: 180 mcg subcutaneously.
T½ of P1101 and Pegasys
Terminal elimination half-life
Time frame: Samples were collected within 1 hour pre-dose, and at 1, 3, 6, 9, 12, 16, 24, 36, 48, 72, 96, 120, 144, 168, 192, 240, 288, 336, 504, and 672 hours post-dose.
λz (Ke) of P1101 and Pegasys
The terminal elimination rate constant; calculated using linear regression on the terminal portion of the Ln-concentration versus time curve
Time frame: Samples were collected within 1 hour pre-dose, and at 1, 3, 6, 9, 12, 16, 24, 36, 48, 72, 96, 120, 144, 168, 192, 240, 288, 336, 504, and 672 hours post-dose.
2',5' oligoadenylate synthetase (OAS): Emax
Maximum serum biomarker response; the highest biomarker concentration observed during a dosage interval.
Time frame: Samples were collected within 1 hour pre-dose and at 24, 48, 72, 96, 120, 168, 240, 336, 504, and 672 hours post-dose
2',5' oligoadenylate synthetase (OAS): Tmax
The time that Emax was observed.
Time frame: Samples were collected within 1 hour pre-dose and at 24, 48, 72, 96, 120, 168, 240, 336, 504, and 672 hours post-dose
2',5' oligoadenylate synthetase (OAS): AUC0-t
Area under the biomarker concentration versus time curve from time 0 to the last measured concentration.
Time frame: Samples were collected within 1 hour pre-dose and at 24, 48, 72, 96, 120, 168, 240, 336, 504, and 672 hours post-dose
Neopterin: Emax
Maximum serum biomarker response; the highest biomarker concentration observed during a dosage interval.
Time frame: Samples were collected within 1 hour pre-dose and at 24, 48, 72, 96, 120, 168, 240, 336, 504, and 672 hours post-dose
Neopterin: Tmax
The time that Emax was observed.
Time frame: Samples were collected within 1 hour pre-dose and at 24, 48, 72, 96, 120, 168, 240, 336, 504, and 672 hours post-dose
Neopterin: AUC0-t
Area under the biomarker concentration versus time curve from time 0 to the last measured concentration.
Time frame: Samples were collected within 1 hour pre-dose and at 24, 48, 72, 96, 120, 168, 240, 336, 504, and 672 hours post-dose