Table 4.
Pharmacokinetic parameters of platinum
| Parameter | Unit | Carboplatin without metformin (median (IQR)) | Carboplatin with metformin (median (IQR)) | p value |
|---|---|---|---|---|
| CL | L/h | 3.39 (1.2) | 2.44 (1.5) | 0.013 |
| Vda | L | 484 (135.6) | 385 (170.9) | 0.037 |
| AUC 48 h | mg/L*h | 82.8 (14.2) | 91.8 (35.0) | 0.028 |
| AUC 48 h corrected for dose adjustment | mg/L*h | 82.8 (14.2) | 101 (44.7) | 0.013 |
Pharmacokinetic parameters of platinum (carboplatin) when administered as combination chemotherapy with paclitaxel and with addition of metformin (n = 10 patients)
aWith the KinFit analysis, it was determined that a three-compartment model fit the platinum levels best based on the improved p-values of the fits compared to a two-compartment model. No significant difference in volume of distribution was found in any of the three separate compartments.
Platinum AUCs of cycle 2 were corrected for carboplatin dose adjustment from cycle 1 to cycle 2 in 3 patients (dose reduction for reason of thrombocytopenia), assuming a linear relationship between dose and AUC. AUC area under the concentration-time curve, CL clearance, IQR inter quartile range, Vd total volume of distribution