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David E Leahy Molecular Informatics Group Newcastle University
Development of PBPK Methods ,[object Object],[object Object],[object Object],[object Object],[object Object]
Physiologically Based PK Models ,[object Object],[object Object],[object Object]
In Vitro ADME ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
AUC Predictions by PBPK
Predicted Plasma Levels A, biperiden; B, acecainide; C, dofetilide; D, budesonide
PBPK  versus  Scaling Training Set Caldwell (n=176) I Ward (n=97) PBPK (n=69) Method I Method II Av. Fold E. 2.16 2.22 2.64 2.48 FE < 2 56% 52% 49% 46% FE < 3 77% 79% 70% 72% FE < 4 88% 86% 79% 75% Test Set Caldwell  (n=18) Ward (n=18) PBPK (n=18) Method I Method II Av. Fold E. 2.61 2.53 3.44 2.80 FE < 2 50% 50% 28% 50% FE < 3 56% 56% 44% 61% FE < 4 72% 67% 61% 72% Median P/A 1.74 1.60 2.54 1.11
Scaling(Ward Scaling) PBPK Scaling (Caudwell II) Scaling (Cauldwell I)
Summary ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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PBPK simulation as an alternative to animal testing

  • 1. David E Leahy Molecular Informatics Group Newcastle University
  • 2.
  • 3.
  • 4.
  • 6. Predicted Plasma Levels A, biperiden; B, acecainide; C, dofetilide; D, budesonide
  • 7. PBPK versus Scaling Training Set Caldwell (n=176) I Ward (n=97) PBPK (n=69) Method I Method II Av. Fold E. 2.16 2.22 2.64 2.48 FE < 2 56% 52% 49% 46% FE < 3 77% 79% 70% 72% FE < 4 88% 86% 79% 75% Test Set Caldwell (n=18) Ward (n=18) PBPK (n=18) Method I Method II Av. Fold E. 2.61 2.53 3.44 2.80 FE < 2 50% 50% 28% 50% FE < 3 56% 56% 44% 61% FE < 4 72% 67% 61% 72% Median P/A 1.74 1.60 2.54 1.11
  • 8. Scaling(Ward Scaling) PBPK Scaling (Caudwell II) Scaling (Cauldwell I)
  • 9.