The study was an assessor-blind, balanced, randomized, two-treatment, two-period, single-dose, two-way crossover, comparative, pharmacokinetic (PK) and pharmacodynamic (PD) study of subcutaneous (SC) Pegfilgrastim injection (6 mg/0.6 mL; INTP5 and US-Neulasta) in healthy, adult, human subjects under fed conditions.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
OTHER
Masking
SINGLE
Enrollment
144
INTP5: A proposed pegfilgrastim biosimilar to US Neulasta.
US Neulasta: FDA-approved pegfilgrastim innovator product.
Lambda Therapeutic Research Ltd.
Ahmedabad, Gota, India
Pharmacokinetic (PK) Endpoints: Pegfilgrastim C[Max]
Maximum measured serum concentration, calculated from the serum concentration vs. time profile of the individual subjects.
Time frame: Samples withdrawn at 1 hour pre-dose , at 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24 (D-2), 26, 30, 36, 42, 48 (D-3), 60, 72 (D-4), 96 (D-5), 120 (D-6), 144 (D-7), 168 (D-8), 192 (D-9), 240 (D-11), 288 (D-13), 336 (D-15) & 504 (D-22) hours post-dose.
Pharmacokinetic (PK) Endpoints: Pegfilgrastim AUC[0-infinity]
Area under the serum concentration versus time curve from time zero to infinity. Where AUC\[0-infinity\]= AUC\[0-t\] + Ct/λz(lambda-z), Ct is the last measurable concentration and λz(lambda-z) is the terminal rate constant.
Time frame: Samples withdrawn at 1 hour pre-dose , at 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24 (D-2), 26, 30, 36, 42, 48 (D-3), 60, 72 (D-4), 96 (D-5), 120 (D-6), 144 (D-7), 168 (D-8), 192 (D-9), 240 (D-11), 288 (D-13), 336 (D-15) & 504 (D-22) hours post-dose.
Pharmacodynamic (PD) Endpoints: E[Max] for Baseline Non-adjusted ANC
Maximum measured absolute neutrophil count (ANC).
Time frame: Samples were withdrawn 1 hour pre-dose and at 6, 12, 24 (D-2), 36, 48 (D-3), 60, 72 (D-4), 96 (D-5), 120 (D-6), 144 (D-7), 168 (D-8), 192 (D-9), 216 (D-10), 240 (D-11), 288 (D-13), 312 (D-14), 336 (D-15), 360 (D-16) and 504 (D-22) hours post-dose.
Pharmacodynamic (PD) Endpoints: AUEC[0-t] for Baseline Non-adjusted ANC
Area under the absolute neutrophil count (ANC) versus time curve from time zero to the last measurable concentration as calculated by linear trapezoidal method.
Time frame: Samples were withdrawn 1 hour pre-dose and at 6, 12, 24 (D-2), 36, 48 (D-3), 60, 72 (D-4), 96 (D-5), 120 (D-6), 144 (D-7), 168 (D-8), 192 (D-9), 216 (D-10), 240 (D-11), 288 (D-13), 312 (D-14), 336 (D-15), 360 (D-16) and 504 (D-22) hours post-dose.
PK Endpoint: Pegfilgrastim AUC[0-t]
Area under the serum concentration vs. time curve, calculated by linear trapezoidal rule from measured data points from the time zero to the time of last quantified concentration.
Time frame: Samples withdrawn at 1 hour pre-dose , at 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24 (D-2), 26, 30, 36, 42, 48 (D-3), 60, 72 (D-4), 96 (D-5), 120 (D-6), 144 (D-7), 168 (D-8), 192 (D-9), 240 (D-11), 288 (D-13), 336 (D-15) & 504 (D-22) hours post-dose.
PK Endpoint: Pegfilgrastim T[Max]
The time of observing the peak concentration, calculated from the serum concentration vs. time profile of the individual subjects.
Time frame: Samples withdrawn at 1 hour pre-dose , at 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24 (D-2), 26, 30, 36, 42, 48 (D-3), 60, 72 (D-4), 96 (D-5), 120 (D-6), 144 (D-7), 168 (D-8), 192 (D-9), 240 (D-11), 288 (D-13), 336 (D-15) & 504 (D-22) hours post-dose.
PK Endpoint: Pegfilgrastim λz(Lambda-z)
Terminal rate constant: First order rate constant associated with the terminal (log-linear) portion of the curve. This was estimated via linear regression of time vs. log concentration. This parameter was calculated by linear least squares regression analysis using last three or more nonzero plasma concentration values.
Time frame: Samples withdrawn at 1 hour pre-dose , at 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24 (D-2), 26, 30, 36, 42, 48 (D-3), 60, 72 (D-4), 96 (D-5), 120 (D-6), 144 (D-7), 168 (D-8), 192 (D-9), 240 (D-11), 288 (D-13), 336 (D-15) & 504 (D-22) hours post-dose.
PK Endpoint: Pegfilgrastim R^2 Adjusted
Goodness of fit statistic for the terminal phase, adjusted for the number of points used in the estimation of λz. R\^2 is the coefficient of Determination and can range from 0 to 1,; with higher values indicating greater predictability.
Time frame: Samples withdrawn at 1 hour pre-dose , at 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24 (D-2), 26, 30, 36, 42, 48 (D-3), 60, 72 (D-4), 96 (D-5), 120 (D-6), 144 (D-7), 168 (D-8), 192 (D-9), 240 (D-11), 288 (D-13), 336 (D-15) & 504 (D-22) hours post-dose.
PK Endpoint: Pegfilgrastim t[1/2]
The terminal half-life calculated using the formula 0.693/λz(lambda-z).
Time frame: Samples withdrawn at 1 hour pre-dose , at 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24 (D-2), 26, 30, 36, 42, 48 (D-3), 60, 72 (D-4), 96 (D-5), 120 (D-6), 144 (D-7), 168 (D-8), 192 (D-9), 240 (D-11), 288 (D-13), 336 (D-15) & 504 (D-22) hours post-dose.
PK Endpoint: Pegfilgrastim AUC[_Percent_Extrap_Obs]
The residual area in percentage determined by the formula, \[(AUC\[0-infinity\]-AUC\]0-t\])/AUC0-infinity\] x 100.
Time frame: Samples withdrawn at 1 hour pre-dose , at 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24 (D-2), 26, 30, 36, 42, 48 (D-3), 60, 72 (D-4), 96 (D-5), 120 (D-6), 144 (D-7), 168 (D-8), 192 (D-9), 240 (D-11), 288 (D-13), 336 (D-15) & 504 (D-22) hours post-dose.
PD Endpoint: T[Max] for Baseline Non-adjusted ANC
Time to reach the maximum measured absolute neutrophil count (ANC)
Time frame: Samples were withdrawn 1 hour pre-dose and at 6, 12, 24 (D-2), 36, 48 (D-3), 60, 72 (D-4), 96 (D-5), 120 (D-6), 144 (D-7), 168 (D-8), 192 (D-9), 216 (D-10), 240 (D-11), 288 (D-13), 312 (D-14), 336 (D-15), 360 (D-16) and 504 (D-22) hours post-dose.
PD Endpoint: E[Max], Baseline-adjusted ANC
Maximum measured absolute neutrophil count (ANC)
Time frame: Samples were withdrawn 1 hour pre-dose and at 6, 12, 24 (D-2), 36, 48 (D-3), 60, 72 (D-4), 96 (D-5), 120 (D-6), 144 (D-7), 168 (D-8), 192 (D-9), 216 (D-10), 240 (D-11), 288 (D-13), 312 (D-14), 336 (D-15), 360 (D-16) and 504 (D-22) hours post-dose.
PD Endpoint: AUEC[0-t], Baseline-adjusted ANC
Area under the absolute neutrophil count (ANC) versus time curve from time zero to the last measurable concentration as calculated by linear trapezoidal method.
Time frame: Samples were withdrawn 1 hour pre-dose and at 6, 12, 24 (D-2), 36, 48 (D-3), 60, 72 (D-4), 96 (D-5), 120 (D-6), 144 (D-7), 168 (D-8), 192 (D-9), 216 (D-10), 240 (D-11), 288 (D-13), 312 (D-14), 336 (D-15), 360 (D-16) and 504 (D-22) hours post-dose.
PD Endpoint: T[Max], Baseline-adjusted ANC
Time to reach the maximum measured absolute neutrophil count (ANC)
Time frame: Samples were withdrawn 1 hour pre-dose and at 6, 12, 24 (D-2), 36, 48 (D-3), 60, 72 (D-4), 96 (D-5), 120 (D-6), 144 (D-7), 168 (D-8), 192 (D-9), 216 (D-10), 240 (D-11), 288 (D-13), 312 (D-14), 336 (D-15), 360 (D-16) and 504 (D-22) hours post-dose.
PD Endpoint: λz(Lamda-z) and Baseline-adjusted ANC
First order rate constant associated with the terminal (log-linear) portion of the curve. This is estimated via linear regression of time vs. log concentration. This parameter will be calculated by linear least squares regression analysis using at least last three or more non-zero values.
Time frame: Samples were withdrawn 1 hour pre-dose and at 6, 12, 24 (D-2), 36, 48 (D-3), 60, 72 (D-4), 96 (D-5), 120 (D-6), 144 (D-7), 168 (D-8), 192 (D-9), 216 (D-10), 240 (D-11), 288 (D-13), 312 (D-14), 336 (D-15), 360 (D-16) and 504 (D-22) hours post-dose.
PD Endpoint: t[1/2] for Baseline-adjusted ANC
The terminal half-life will be calculated as 0.693/λz(lamda-z).
Time frame: Samples were withdrawn 1 hour pre-dose and at 6, 12, 24 (D-2), 36, 48 (D-3), 60, 72 (D-4), 96 (D-5), 120 (D-6), 144 (D-7), 168 (D-8), 192 (D-9), 216 (D-10), 240 (D-11), 288 (D-13), 312 (D-14), 336 (D-15), 360 (D-16) and 504 (D-22) hours post-dose.
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