TABLE 1

Quantitative accuracy of various methods for predicting human volume of distribution from preclinical pharmacokinetic data Data are expressed as median values for n = 103 observations.


Method

Fold Variance

Variance

Absolute Variance
l/kg l/kg
Three-species allometry 1.03 0.02 0.27
Rat and dog allometry 1.15 0.05 0.31
Rat and monkey allometry 0.25 -0.27 0.43
Dog and monkey allometry 0.32 -0.33 0.36
Rat volume 1.42 0.15 0.43
Dog volume 1.33 0.09 0.34
Monkey volume 1.00 0.00 0.23
Average of rat and dog 1.53 0.21 0.34
Average of rat and monkey 1.34 0.15 0.29
Average of dog and monkey
1.34
0.08
0.26