A Pharmacokinetic Study of Abiraterone Acetate in Male Participants With Impaired Renal Function Compared to Individuals With Normal Renal Function

Cougar Biotechnology

Status and phase

Completed

Phase 1

Conditions

Renal Insufficiency

Treatments

Drug: Abiraterone acetate: matched control participants with normal renal function

Drug: Abiraterone acetate: participants with end-stage renal disease

Study type

Interventional

Funder types

Industry

Identifiers

NCT01715259

COU-AA-012 (Other Identifier)

CR016951

Details and patient eligibility

About

The purpose of this study is to determine the pharmacokinetic (how the drug concentrations change over time) profile of abiraterone acetate 1000 mg when administered as a single dose in male participants with impaired renal function compared to individuals with normal renal function.

Full description

This is an open-label (identity of assigned study drug will be known) pharmacokinetics study evaluating a single dose of abiraterone acetate 1000 mg administered in male participants with end-stage renal disease compared to matched-control (matched for age and body mass index) participants with normal renal function. There will be approximately 8 participants in each cohort (group). The total study duration for each participant will be 36 days. Abiraterone acetate 1000 mg will be administered orally (by mouth) as a single dose in the fasted state on Day 1. No food will be ingested for 4 hours post-dose. Participants will be confined to the clinical research center from the day prior to dosing (Day -1) to Day 5 and will return to the clinic on Days 8, 15, and 22 for follow up. Serial pharmacokinetic samples will be collected and safety will be monitored throughout the study.

Enrollment

16 patients

Sex

Male

Ages

40 to 80 years old

Volunteers

Accepts Healthy Volunteers

Inclusion criteria

All participants:

Non-smokers or light smokers
Body Mass Index of 18-38 kg/m2 inclusive
Negative drug test, at screening and Day -1, for breathalyzer alcohol and drugs of abuse
Negative HIV antibody test at screening
Clinical laboratory values within protocol-defined parameters
Agrees to protocol-defined use of effective contraception
Participants may have concurrent stable medical conditions and may be included if the deemed condition(s) will not introduce an additional risk factor and will not interfere with the study objectives and procedures

Patients with renal impairment must additionally meet the following criteria:

Must have protocol-defined criteria of end-stage renal disease, moderate or mild renal impairment
Evidence of stable renal impairment

Control participants with normal renal function must additionally meet the following criteria:

Must be in good health

Exclusion criteria

All participants:

Medical history of malignancy except non-melanoma skin cancer
Participation in any other investigational study drug trial in which receipt of an investigational study drug occurred within 5 half-lives of that drug or 30 days prior to dosing with abiraterone acetate, whichever is longer
History of alcoholism or drug abuse within the past 12 months
Significant history or clinical manifestation as determined by the Investigator of any significant metabolic, allergic, dermatological, hepatic, hematological, pulmonary, cardiovascular, immunologic, neurological, psychiatric or gastrointestinal conditions, surgery or resection that would potentially alter absorption and/or excretion of orally administered drugs
Clinically significant arrhythmias and/or history or presence of a clinically significantly abnormal electrocardiogram
Acute illness, especially any active and uncontrolled infection
Not willing to refrain from strenuous exercise from 48-hours prior to Day -1 and during the period of confinement at the clinical site
Not willing to abstain from consuming: grapefruit- or caffeine-containing foods or beverages for 72 hours prior to Day -1 and alcohol-containing foods or beverages for 24 hours prior to Day -1
Donation of blood or significant loss of blood within 56 days prior to Day 1 or planned donation of blood or plasma from screening through 30 days after Day 1, inclusive
The use of any prescription or over-the-counter (OTC) preparation known to significantly inhibit or induce liver enzymes involved in drug metabolism within 30 days prior to Day 1
Use of any prescription medications/products or any OTC, non-prescription preparations unrelated to existing allowable stable medical conditions within 5 half-lives of that product or 7 days prior to dosing with abiraterone acetate, whichever is longer
Any acute or chronic condition that, in the opinion of the Investigator, would limit the individual's ability to complete and/or participate in this clinical study

Patients with renal impairment who meet any of the following criteria will be excluded from the study:

Acute or exacerbating renal disease, fluctuating or rapidly deteriorating renal function as indicated by widely varying or worsening of signs of renal impairment within 2 weeks of Day 1
Hypertension (systolic blood pressure [BP] >180 or diastolic BP >100)

Control participants with normal renal function who meet any of the following criteria will be excluded from the study: