The primary objective is to evaluate the effect of loading boluses when dose incresaing treatment with SC fentanyl in patients with cancer. The primary endpoint of this study is to prove the non-inferiority of fentanyl plasma concentrations 12 hours after dose augmentation compared to 48 hours after dose augmentation within each patient. Patients will be treated with additional loading boluses and plasma-PK samples will be obtained.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
SUPPORTIVE_CARE
Masking
NONE
Enrollment
45
Administration of subcutaneously administered fentanyl loading boluses
Erasmus Medical Center
Rotterdam, South Holland, Netherlands
RECRUITINGPrimary endpoint of this study is to prove the non-inferiority in fentanyl plasma concentrations 12 hours after dose augmentation compared to 48 hours after dose augmentation within each patient using a bioequivalence approach
Using a paired t-test the geometric mean of the ratio of the two fentanyl plasma concentrations will be compared. The 90% confidence interval of the geomteric mean should fall within the range of 80 - 125%.
Time frame: 48 hours after dose increase
Investigate the safety of the loading bolus strategy by assessing whether CTCAE grade III or higher occur as a consequence of the fentanyl loading boluses.
This will be performed as a descriptive analysis
Time frame: up to 48 hours after dose increase
Describe the course of patient reported pain intensity in the 48 hours following the loading boluses.
This will be performed as a descriptive analysis
Time frame: up to 48 hours after dose increase
Accurately assess the rate of fentanyl absorption after SC fentanyl administered as a bolus.
The pharmacokinetic data will be imputed into a population pharmacokinetic model that allows to simulate other situations and dosing regimens which will be used to further optimize dosing of subcutaneously administered fentanyl
Time frame: up to 48 hours after dose increase
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