SNACK: Improving Bio-availability of the Expensive Oral Oncolytic Drug Abiraterone by Food Intake

Sponsor
Radboud University Medical Center (Other)
Overall Status
Completed
CT.gov ID
NCT02883166
Collaborator
(none)
14
1
2
30.9
0.5

Study Details

Study Description

Brief Summary

Abiraterone is a selective inhibitor of androgen biosynthesis that potently and irreversibly blocks CYP17, a crucial enzyme in testosterone and estrogen synthesis. A pro-drug of abiraterone, abiraterone acetate (Zytiga®), was developed to overcome its poor bio-availability and is fully converted to the active moiety abiraterone. Abiraterone acetate tablets are administered at a fixed oral dose of 1000mg QD in a fasted state in combination with 10mg prednisolon daily.

Abiraterone acetate has a low solubility in aqueous media and a low permeability. The bioavailability of abiraterone acetate is significantly influenced when ingested with food. Ingesting abiraterone acetate with a low fat or a high fat meal resulted respectively in a 5- or 10-fold increase in AUC0-∞. The high and low fat FDA meals used in these food effect studies differ largely from breakfasts taken in everyday life (ca. 800-1000 cal). A continental breakfast contains 160 to 320 calories of which 25-50% is fat, is more compatible with a normal lifestyle and therefore easily sustainable in daily practice. However, the effect of a continental breakfast on the absorption of abiraterone is unknown yet. Furthermore, increasing healthcare costs are a growing concern in all developed countries. Therefore effort should be invested to keep anticancer treatment affordable. A food intervention resulting in a better absorption and enhanced exposure to abiraterone, can lead to a reduced dose, which could significantly impact health care costs for a tumor which is as prevalent as metastatic prostate cancer.

Therefore the investigators want to perform a bioequivalent study to investigate what dose of abiraterone with a continental breakfast equals the dose of 1000mg taken in fasted conditions.

Condition or Disease Intervention/Treatment Phase
Phase 1

Study Design

Study Type:
Interventional
Actual Enrollment :
14 participants
Allocation:
Randomized
Intervention Model:
Crossover Assignment
Masking:
None (Open Label)
Primary Purpose:
Treatment
Official Title:
Improving Bio-availability of the Expensive Oral Oncolytic Drug Abiraterone by Food Intake
Actual Study Start Date :
Aug 1, 2016
Actual Primary Completion Date :
Mar 1, 2019
Actual Study Completion Date :
Mar 1, 2019

Arms and Interventions

Arm Intervention/Treatment
Other: group 1

1000mg abiraterone fasted followed by 500 mg with breakfast

Drug: abiraterone
integested with a continental breakfast
Other Names:
  • Zytiga
  • Other: group 2

    500 mg abiraterone with breakfast followed by 1000mg fasted

    Drug: abiraterone
    integested with a continental breakfast
    Other Names:
  • Zytiga
  • Outcome Measures

    Primary Outcome Measures

    1. dose finding [1.5 year]

      determine the equivalent dose of abiraterone when taken with a continental breakfast compared to 1000mg in fasted state

    Eligibility Criteria

    Criteria

    Ages Eligible for Study:
    18 Years and Older
    Sexes Eligible for Study:
    Male
    Accepts Healthy Volunteers:
    No
    Inclusion Criteria:
    • Subjects must provide written informed consent prior to performance of study-specific procedures or assessments and must be willing to comply with treatment and follow-up.

    Note: informed consent may be obtained prior to start of the specified screening window.

    Note: procedures conducted as part of the subject's routine clinical management (e.g. blood count) and obtained prior to signing of informed consent may be utilized for screening or baseline purposes provided these procedures are conducted as specified in the protocol.

    • ≥ 18 year old men who use or will start with abiraterone.

    • Eastern Cooperative Oncology Group (ECOG) performance status of 0-2.

    • Feasible to collect blood samples from.

    Exclusion Criteria:
    • Clinically significant gastrointestinal abnormalities that may affect absorption of investigational product including, but not limited to:

    • Malabsorption syndrome.

    • Major resection of the stomach or small bowel.

    • Any serious and/or unstable pre-existing medical, psychiatric, or other condition that could interfere with subject's safety, provision of informed consent, or compliance to study procedures.

    • Unable or unwilling to discontinue use of prohibited medications listed in APPENDIX 3 for at least 14 days or five half-lives of a drug (whichever is longer) prior to the first dose of day 1 and for the duration of the study.

    • Concurrent use of other substances known or likely to interfere with the pharmacokinetics of abiraterone.

    Contacts and Locations

    Locations

    Site City State Country Postal Code
    1 Radboud UMC Nijmegen Netherlands 6500HB

    Sponsors and Collaborators

    • Radboud University Medical Center

    Investigators

    • Study Chair: David Burger, PhD, Radboud University Medical Center

    Study Documents (Full-Text)

    None provided.

    More Information

    Additional Information:

    Publications

    Responsible Party:
    Radboud University Medical Center
    ClinicalTrials.gov Identifier:
    NCT02883166
    Other Study ID Numbers:
    • UMCN-AKF-16.04
    First Posted:
    Aug 30, 2016
    Last Update Posted:
    Dec 7, 2020
    Last Verified:
    Dec 1, 2020
    Individual Participant Data (IPD) Sharing Statement:
    No
    Plan to Share IPD:
    No
    Additional relevant MeSH terms:

    Study Results

    No Results Posted as of Dec 7, 2020