The purpose of this study is to evaluate the safety, pharmacodynamics and pharmacokinetics of repeat doses of orally administered AKB-6548 in pre-dialysis participants with anemia.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
10
Different dose levels
Unnamed facility
Augusta, Georgia, United States
Unnamed facility
San Antonio, Texas, United States
Mean Change From Baseline in Hemoglobin (Hgb) on Day 29
Blood samples were collected to assess Hgb. Baseline Hgb was defined as the average of the 2 samples obtained prior to dosing (Pre-Baseline and Baseline). A positive change from baseline indicates that hemoglobin concentration increased.
Time frame: Baseline; Day 29
Mean Change From Baseline in Hematocrit on Day 29
Blood samples were collected to assess hematocrit. A positive change from baseline indicates hematocrit concentration increased.
Time frame: Baseline; Day 29
Mean Change From Baseline in Total Red Blood Cell (RBC) Count on Day 29
Blood samples were collected to assess RBC count. Baseline RBC count was defined as the average of the 2 samples obtained prior to dosing (Pre-Baseline and Baseline). A positive change from baseline indicates RBC count increased.
Time frame: Baseline; Day 29
Mean Change From Baseline in Absolute Reticulocyte Count on Day 29
Blood samples were collected to assess reticulocyte count. Baseline absolute reticulocyte count was defined as the average of the 3 reticulocyte counts obtained prior to dosing (Screening, Pre- Baseline, and Baseline). A positive change from baseline indicates absolute reticulocyte count increased.
Time frame: Baseline; Day 29
Mean Change From Baseline in Reticulocyte Hemoglobin (Hgb) Content on Day 29
Blood samples were collected to assess reticulocyte Hgb. Baseline Hgb was defined as the average of the 2 samples obtained prior to dosing (Pre-Baseline and Baseline). A positive change from baseline indicates reticulocyte Hgb content increased.
Time frame: Baseline; Day 29
Number of Participants With Absolute Change From Baseline in Hemoglobin (Hgb) at Day 29
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Blood samples were collected to assess Hgb. Baseline Hgb was defined as the average of the 2 samples obtained prior to dosing (Pre-Baseline and Baseline).
Time frame: Day 29
Number of Participants With the Percentage Change From Baseline in Hemoglobin (Hgb) at Day 29
Blood samples were collected to assess Hgb. Baseline Hgb was defined as the average of the 2 samples obtained prior to dosing (Pre-Baseline and Baseline).
Time frame: Day 29
Number of Participants With Percentage Change From Baseline in Hematocrit at Day 29
Blood samples were collected to assess hematocrit.
Time frame: Day 29
Number of Participants With Percentage Change From Baseline in Red Blood Cell (RBC) Count at Day 29
Blood samples were collected to assess RBC count. Baseline RBC count was defined as the average of the 2 samples obtained prior to dosing (Pre-Baseline and Baseline).
Time frame: Day 29
Number of Participants With Change From Baseline in Absolute Reticulocyte Count at Day 29
Blood samples were collected to assess reticulocyte count. Baseline absolute reticulocyte count was defined as the average of the 3 reticulocyte counts obtained prior to dosing (Screening, Pre- Baseline, and Baseline).
Time frame: Day 29
Change From Baseline in Ferritin on Day 29
Blood samples were collected to assess ferritin. A positive change from baseline indicates ferritin content increased.
Time frame: Baseline; Day 29
Change From Baseline in Iron on Day 29
Blood samples were collected to assess iron. A positive change from baseline indicates iron content increased.
Time frame: Baseline; Day 29
Change From Baseline in Total Iron Binding Capacity on Day 29
Blood samples were collected to assess total iron binding capacity. A positive change from baseline indicates total iron binding capacity increased.
Time frame: Baseline; Day 29
Change From Baseline in Transferrin Saturation on Day 29
Blood samples were collected to assess transferrin saturation. The transferrin saturation is the ratio of the serum iron concentration and the total iron-binding capacity, expressed as a percentage. A positive change from baseline indicates transferrin saturation increased.
Time frame: Baseline; Day 29
Number of Participants With Treatment-emergent Adverse Events (TEAEs)
An Adverse Event (AE) was defined as any untoward medical occurrence, signs, symptoms, disease, or laboratory or physiological observations occurring in a participant administered with drug, regardless of a causal relationship with that treatment or usage. This also included all suspected adverse medication reactions, reactions from medication overdose, abuse, withdrawal, sensitivity, toxicity, unrelated illnesses, including worsening a pre-existing condition, injury, or accidents. Serious Adverse Events (SAEs) was defined as any life-threatening condition; hospitalization or prolongation of existing hospitalization; persistent or significant disability/incapacity; congenital anomaly/birth defect; or death.
Time frame: Up to 2 weeks post 28 days of treatment
Number of Participants With Clinically Significant Changes From Baseline in Laboratory Parameter Values
Parameters assessed for laboratory values included hematology, chemistry, urinalysis, and coagulation. The investigator was responsible for reviewing laboratory results for clinically significant changes.
Time frame: Up to 2 weeks post 28 days of treatment
Number of Participants With Clinically Significant Changes From Baseline in Vital Sign Values
Parameters assessed for vital signs included sitting (at rest for a minimum of 5 minutes) heart rate, respiratory rate, body temperature, and blood pressure. The investigator was responsible for reviewing laboratory results for clinically significant changes.
Time frame: Up to 2 weeks post 28 days of treatment
Number of Participants With Clinically Abnormal 12-Lead Electrocardiogram (ECG) Findings
A standard 12-lead ECG was performed following dosing in a supine position for approximately 10 minutes. ECGs were taken prior to blood draws when possible. The investigator was responsible for reviewing laboratory results for clinical significance.
Time frame: Up to 2 weeks post 28 days of treatment
Mean Change From Baseline in PR Interval, QT Interval, QRS Interval, and QT Corrected (QTc) Interval
A standard 12-lead ECG was performed following dosing in a supine position for approximately 10 minutes. ECGs were taken prior to blood draws when possible. The parameters evaluated from the participant ECG trace included PR interval, QT interval, QRS interval, and QTc (corrected).
Time frame: Up to 2 weeks post 28 days of treatment
Mean Trough Concentrations of Vadadustat at Day 8, 15, 22 and 29
Serum samples were collected from the participants at the defined time points. Trough concentration was defined as the concentration of drug in the blood immediately before the next dose is administered. Trough concentration was calculated using the validated liquid chromatography-mass spectrometry (LC-MS) and liquid chromatography-tandem mass spectrometry (LC-MS/MS) method
Time frame: Pre-dose at Day 8, 15, 22 and 29