Table 1. PK Comparison of Doxil vs Generic Liposomal DXRa.
Co | Cmax | T1/2 | Tmax | AUCall | AUCinf | Vd | CL | MRTinf | Vss | |
---|---|---|---|---|---|---|---|---|---|---|
ng/mL | ng/mL | h | h | ng·h/mL | ng·h/mL | mL/kg | mL/(h·kg) | h | mL/kg | |
Doxil Encapsulated | ||||||||||
avg | 164338 | 160923 | 29 | - | 5780633 | 6605784 | 31 | 0.77 | 40 | 62 |
SD | 19799 | 12804 | 7 | 901285 | 1070015 | 4 | 0.13 | 9 | 9 | |
Generic Liposomal DXR Encapsulated | ||||||||||
avg | 186841b | 184708b | 34 | - | 6717656 | 7911722 | 26b | 0.67 | 47 | 61 |
SD | 15480 | 12988 | 7 | 1173239 | 1780233 | 2 | 0.20 | 10 | 3 | |
Doxil Unencapsulated | ||||||||||
avg | - | 186 | 88 | 36 | 12515 | - | - | - | - | - |
SD | 46 | 30 | 31 | 1742 | ||||||
Generic Liposomal DXR Unencapsulated | ||||||||||
avg | - | 157 | 86 | 33 | 10129b | - | - | - | - | - |
SD | 52 | 67 | 12 | 2360 | ||||||
Doxil Unbound | ||||||||||
avg | - | 28 | 60 | 24 | 1804 | - | - | - | - | - |
SD | 7 | 12 | 31 | 516 | ||||||
Generic Liposomal DXR Unbound | ||||||||||
avg | - | 24 | 64 | 36 | 1381 | - | - | - | - | - |
SD | 13 | 16 | 13 | 429 |
Displayed are the average animal pharmacokinetic parameters for the Doxil and generic liposomal DXR encapsulated, unencapsulated, and unbound drug profiles: concentration time zero (C0); half-life (T1/2); area under the time concentration curve to time infinity (AUCinf); maximum concentration (Cmax); area under the time concentration curve all time points (AUCall); volume of distribution (Vd); clearance (CL); mean residence time (MRTinf); volume of distribution steady state (Vss); time of maximum concentration (Tmax); half-life (T1/2).
(N = 8) p ≤ 0.05, Student’s t test.