Ignite Creation Date:
2025-12-24 @ 10:13 PM
Ignite Modification Date:
2026-03-05 @ 7:57 AM
Study NCT ID:
NCT02286635
Status:
COMPLETED
Last Update Posted:
2017-08-18
First Post:
2014-11-04
Is Gene Therapy:
True
Has Adverse Events:
False
Brief Title:
Evaluate Effects of Multiple Doses of Rifampin and Clarithromycin on the Single Dose Pharmacokinetics of Deflazacort
Sponsor:
PTC Therapeutics
Organization:
Study Overview
Official Title:
A Phase 1, Open-Label, 2-Arm, Fixed-Sequence Study to Evaluate the Potential Effects of Multiple Doses of Rifampin (CYP3A4 Inducer) and Clarithromycin (CYP3A4 Inhibitor) on the Single Dose Pharmacokinetics of Deflazacort in Healthy Subjects
Status:
COMPLETED
Status Verified Date:
2017-08
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief Summary:
The primary objective of the study is to determine the potential effects of multiple doses of rifampin and clarithromycin on the single dose pharmacokinetics (PK) of the deflazacort active metabolite (21 desacetyl-DFZ) in healthy adult subjects.
Detailed Description:
This is an open label, parallel 2-arm, 2-period, fixed-sequence study in 58 healthy adult non-tobacco using male and female subjects divided into 2 cohorts, with 29 subjects in each arm of the study (Cohorts A and B).
Cohort A:
On Day 1 of Period 1 a single oral dose of deflazacort (Treatment A) will be administered followed by PK sampling for 24 hours for 21 desacetyl DFZ and, if data permit, deflazacort.
In Period 2, multiple oral doses of rifampin will be administered once daily (QD) for 10 consecutive days with a single oral dose of deflazacort coadministered on Day 10 (Treatment B). Pharmacokinetic sampling for 21-desacetyl-DFZ and, if data permit, deflazacort will be taken for 24 hours following deflazacort dosing on Day 10. Morning urine collection will be used to measure 6β-hydroxycortisol and free cortisol concentrations on Days 1, 4, 8, and 10 to evaluate the level of cytochrome P450 (CYP) enzyme induction.
Cohort B:
On Day 1 of Period 1 a single oral dose of deflazacort (Treatment C) will be administered followed by PK sampling for 24 hours for 21-desacetyl-DFZ and, if data permit, deflazacort.
In Period 2, multiple oral doses of clarithromycin will be administered twice daily (BID) for 4 consecutive days with a single oral dose of deflazacort coadministered on the morning of Day 4 (Treatment D). Pharmacokinetic sampling for 21 desacetyl-DFZ and, if data permit, deflazacort will be taken for 24 hours following deflazacort dosing on Day 4.
Both Cohorts A and B:
There will be at least 24 hours between the dose in Period 1 and the first dose in Period 2.
Safety will be monitored throughout the study by repeated clinical and laboratory evaluations.
The clinic will attempt to contact subjects using their standard procedures approximately 14 days after the last study drug administration to determine if any adverse events (AEs) have occurred since the last dose of study drug. Subjects who terminate the study early will be contacted if the Principal Investigator (PI) deems necessary.
Cohort A:
Treatments A and B are described as follows:
Treatment A (Period 1): 18 mg deflazacort (3 x 6 mg tablets) at Hour 0 on Day 1, following an overnight fast.
Treatment B (Period 2): 600 mg rifampin (2 x 300 mg capsules) administered at Hour 0 after an overnight fast every 24 hours for 10 days (within ± 1 hour of dosing time on Day 1), with 18 mg deflazacort (3 x 6 mg tablets) coadministered on Day 10.
Cohort B:
Treatments C and D are described as follows:
Treatment C (Period 1): 18 mg deflazacort (3 x 6 mg tablets) at Hour 0 on Day 1, following an overnight fast.
Treatment D (Period 2): 500 mg clarithromycin (1 x 500 mg tablets) administered at Hour 0 and Hour 12, under fasting conditions, approximately every 12 hours, for 4 days (within ± 1 hour of dosing times on Day 1), with 18 mg deflazacort (3 x 6 mg tablets) coadministered at Hour 0 on the morning of Day 4. The final dose of clarithromycin will be given at Hour 12 in the evening of Day 4.
All study drugs in both cohorts will be administered orally with approximately 240 mL of water.
Cohort A:
On Day 1 of Period 1 a single oral dose of deflazacort (Treatment A) will be administered followed by PK sampling for 24 hours for 21 desacetyl DFZ and, if data permit, deflazacort.
In Period 2, multiple oral doses of rifampin will be administered once daily (QD) for 10 consecutive days with a single oral dose of deflazacort coadministered on Day 10 (Treatment B). Pharmacokinetic sampling for 21-desacetyl-DFZ and, if data permit, deflazacort will be taken for 24 hours following deflazacort dosing on Day 10. Morning urine collection will be used to measure 6β-hydroxycortisol and free cortisol concentrations on Days 1, 4, 8, and 10 to evaluate the level of cytochrome P450 (CYP) enzyme induction.
Cohort B:
On Day 1 of Period 1 a single oral dose of deflazacort (Treatment C) will be administered followed by PK sampling for 24 hours for 21-desacetyl-DFZ and, if data permit, deflazacort.
In Period 2, multiple oral doses of clarithromycin will be administered twice daily (BID) for 4 consecutive days with a single oral dose of deflazacort coadministered on the morning of Day 4 (Treatment D). Pharmacokinetic sampling for 21 desacetyl-DFZ and, if data permit, deflazacort will be taken for 24 hours following deflazacort dosing on Day 4.
Both Cohorts A and B:
There will be at least 24 hours between the dose in Period 1 and the first dose in Period 2.
Safety will be monitored throughout the study by repeated clinical and laboratory evaluations.
The clinic will attempt to contact subjects using their standard procedures approximately 14 days after the last study drug administration to determine if any adverse events (AEs) have occurred since the last dose of study drug. Subjects who terminate the study early will be contacted if the Principal Investigator (PI) deems necessary.
Cohort A:
Treatments A and B are described as follows:
Treatment A (Period 1): 18 mg deflazacort (3 x 6 mg tablets) at Hour 0 on Day 1, following an overnight fast.
Treatment B (Period 2): 600 mg rifampin (2 x 300 mg capsules) administered at Hour 0 after an overnight fast every 24 hours for 10 days (within ± 1 hour of dosing time on Day 1), with 18 mg deflazacort (3 x 6 mg tablets) coadministered on Day 10.
Cohort B:
Treatments C and D are described as follows:
Treatment C (Period 1): 18 mg deflazacort (3 x 6 mg tablets) at Hour 0 on Day 1, following an overnight fast.
Treatment D (Period 2): 500 mg clarithromycin (1 x 500 mg tablets) administered at Hour 0 and Hour 12, under fasting conditions, approximately every 12 hours, for 4 days (within ± 1 hour of dosing times on Day 1), with 18 mg deflazacort (3 x 6 mg tablets) coadministered at Hour 0 on the morning of Day 4. The final dose of clarithromycin will be given at Hour 12 in the evening of Day 4.
All study drugs in both cohorts will be administered orally with approximately 240 mL of water.
Study Oversight
Has Oversight DMC:
False
Is a FDA Regulated Drug?:
None
Is a FDA Regulated Device?:
None
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?: