The primary objective of this study was to evaluate the pharmacokinetics of evolocumab after a single 140 mg subcutaneous (SC) dose in aduts with normal renal function or severe renal impairment or end-stage renal disease (ESRD) receiving hemodialysis.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
18
Administered by subcutaneous injection
Research Site
Denver, Colorado, United States
Maximum Observed Serum Concentration (Cmax) of Evolocumab
Serum concentrations of evolocumab were measured by a validated enzyme-linked immunosorbent assay (ELISA). The lower limit of quantification (LLOQ) of the assay was 800 ng/mL.
Time frame: Predose and 4 hours, 2, 3, 4, 6, 8, 11, 15, 22, 29, 43, 50 and 57 days postdose
Area Under the Concentration-time Curve From Time 0 to Time of Last Quantifiable Concentration (AUC0-last) for Evolocumab
Time frame: Predose and 4 hours, 2, 3, 4, 6, 8, 11, 15, 22, 29, 43, 50 and 57 days postdose
Number of Participants With Adverse Events
The severity of each adverse event was graded using the National Cancer Institute Common Terminology Criteria for Adverse Events (CTCAE) version 4. A serious adverse event is defined as an adverse event that meets at least 1 of the following serious criteria: * fatal; * life threatening (places the participant at immediate risk of death); * requires in patient hospitalization or prolongation of existing hospitalization; * results in persistent or significant disability/incapacity; * congenital anomaly/birth defect; * other medically important serious event. The investigator assessed whether each adverse event was possibly related to the study drug.
Time frame: From the first dose of study drug up until Day 57
Number of Participants With Clinically Relevant Vital Sign or Clinical Laboratory Changes
The investigator reviewed vital signs and laboratory test results and determined whether an abnormal value in an individual participant represented a clinically significant change from the participant's baseline values.
Time frame: 57 days
Number of Participants With Anti-evolocumab Antibodies
Blood samples were tested using an electrochemiluminescence-based bridging immunoassay to detect antibodies capable of binding to evolocumab.
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Time frame: 57 days
Area Under the Effect Curve From Baseline to Day 57 (AUECday1-57) for Low-density Lipoprotein Cholesterol (LDL-C)
The derived log-transformed AUECday1-57 for direct LDL-C was analyzed using a mixed-effect analysis of variance model. Log-transformed baseline LDL-C was the covariate.
Time frame: 4 hours, 2, 3, 4, 6, 8, 11, 15, 22, 29, 43, 50 and 57 days postdose
Mean Percent Change From Baseline in Proprotein Convertase Subtilisin/Kexin Type 9 (PCSK9)
Serum PCSK9 concentrations were determined using a qualified ELISA. The LLOQ of the assay was 15 ng/mL. Log-transformed baseline PCSK9 was included in the model as a covariate and participant as a random effect.
Time frame: Baseline and 4 hours, 2, 3, 4, 6, 8, 11, 15, 22, 29, 43, 50 and 57 days postdose