A Study of Chronocort® Versus Cortef ® in Healthy Adult Male Subjects

A Single Centre, Open-label, Randomised, Single Dose, Two Period, Crossover Relative Bioavailability Study of Chronocort® Versus Cortef® Immediate Release Hydrocortisone Tablets in Dexamethasone-suppressed Healthy Adult Male Subjects.

This was a single centre, open label, randomised, two period, crossover study to evaluate the bioavailability of Chronocort® versus Cortef® immediate release hydrocortisone tablets in dexamethasone-suppressed healthy adult male subjects.

Study Overview

• Status: Completed
• Conditions: Adrenal Insufficiency
• Intervention / Treatment: Drug: Chronocort®; Drug: Cortef®

Detailed Description

This study was an open-label, randomised, single dose, two-period, crossover study in 25 healthy male subjects.

The study comprised of a pre-study screen, followed by 2 treatment periods (1 and 2) and a post-study followup.

Screening (Day -28 to Day -1): Screening assessments were carried out within 28 days before first administration of IMP. Eligible subjects were asked to return for the treatment periods. Continued eligibility was confirmed pre-dose during each treatment period.

Treatment Periods (Day -1 to Day 1): Eligible subjects received a single-dose of each IMP over 2 treatment periods (1/period as determined by the randomisation schedule), each separated by 7 days washout. Each study period was approximately 2 days in duration, from the afternoon of Day -1 to the morning of Day 1 at 24 hours (h) post-dose. During each treatment period, Subjects arrived at the Clinical Unit on Day -1, IMP was administered on the morning of Day 0 fasted (following an overnight fast of at least 10 h) and subjects were discharged following the 24 h post-dose blood samples and completion of the scheduled measurements.

Pharmacokinetic (PK) samples were collected pre-dose at ~ -2min and up to 23 h post-dose (Day 1) (24 samples) for the measurement of cortisol. A further 3 baseline samples were taken for the measurement of cortisol. Safety was also evaluated throughout the study.

Post Study: After completion of both study periods, the subjects returned 4-22 days later for the final followup visit.

• Study Type: Interventional
• Enrollment (Actual): 25
• Phase: Phase 1

Contacts and Locations

Study Locations

• United Kingdom
  • Merthyr Tydfil, United Kingdom, CF48 4DR
    • Simbec Research Ltd.

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 45 years (Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: Male

Description

Inclusion Criteria:

1. Healthy male subjects between 18 and 45 years of age inclusive (at screening).
2. A BMI of 18-30 kg/m2 (inclusive).
3. No clinically significant abnormal serum biochemistry, haematology or urine examination values as defined by the Investigator.
4. A negative urinary drugs of abuse screen. A positive alcohol test or drugs of abuse test may be repeated at the discretion of the Investigator.
5. Negative HIV and Hepatitis Band C results.
6. No clinically significant abnormalities in 12-lead ECG as defined by the Investigator.
7. No clinically significant deviation outside the normal ranges for blood pressure and heart rate measurements as defined by the Investigator.

8. Subjects (unless anatomically sterile or where abstaining from sexual intercourse is in line with the preferred and usual lifestyle of the subject) and sexual partners must use 2 effective contraception methods during the trial and for 3 months after the last dose, for example:

   • Oral, injected or implanted hormonal contraceptive+ condom
   • Intra-uterine device (IUD) + condom
   • Diaphragm with spermicide + condom
9. Subjects must be available to complete both periods of the study and the follow-up visit.
10. Subjects must satisfy a medical examiner about their fitness to participate in the study.
11. Subjects must be able to read and understand the informed consent form and must provide written informed consent to participate in the study.

Exclusion Criteria:

1. A clinically significant history of gastrointestinal disorder likely to influence drug absorption.
2. Receipt of any medication with the exception of paracetamol within the 14 days prior to dosing (including topical steroids, vitamins, dietary supplements or herbal remedies).
3. Evidence of renal. hepatic, central nervous system, respiratory, cardiovascular or metabolic dysfunction.
4. Receipt of any vaccination within the previous one month.
5. Presence of infections (systemic fungal and viral infections, acute bacterial infections).
6. Current or previous history of tuberculosis.
7. A clinically significant history of previous allergy/sensitivity to hydrocortisone and/or dexamethasone.
8. Meeting any of the contraindications for Cortef® and/or dexamethasone, as detailed in the United States Prescribing Information (USPI)/Summary of Product Characteristics (SmPC), respectively
9. A clinically significant history of drug or alcohol abuse.
10. Inability to communicate well with the Investigator (i.e., language problem, poor mental development or impaired cerebral function).
11. Participation in a New Chemical Entity clinical study or a marketed drug clinical study within the previous three months, or five half- lives of the study drug, whichever is the longer period. (NB. the three-month washout period between trials is defined as the period of time elapsed between the last dose of the previous study and the first dose of the next study).
12. Subjects who have consumed more than two units of alcohol per day within seven days prior to the first dose or have consumed any alcohol within the 48-hour period prior to the first dose.
13. Donation or receipt of 450 mL of blood within the previous three months.
14. Subjects who smoke (or ex-smokers who have smoked within six months prior to first dose). This includes e-cigarette and shisha users.
15. Subjects who work shifts (i.e. regularly alternate between days, afternoons and nights).

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Crossover Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Chronocort®, then Cortef®; Single dose of 20mg Chronocort® (oral administration), followed by a single dose of 20mg Cortef® Immediate Release Hydrocortisone Tablets (oral administration).	Drug: Chronocort®; Single dose of 20mg Chronocort® administered in one treatment period; Drug: Cortef®; Single dose of 20mg Cortef® administered in one treatment period
Active Comparator: Cortef®, then Chronocort®; Single dose of 20mg Cortef® Immediate Release Hydrocortisone Tablets (oral administration), followed by a single dose of 20mg Chronocort® (oral administration).	Drug: Chronocort®; Single dose of 20mg Chronocort® administered in one treatment period; Drug: Cortef®; Single dose of 20mg Cortef® administered in one treatment period

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Area under the concentration time curve from time 0 to infinity (AUC0-inf) of Chronocort® to Cortef® based on baseline adjusted and unadjusted serum cortisol concentration calculated for each sampling time point.	Comparing the area under the concentration time curve of Chronocort® compared to Cortef® immediate release hydrocortisone tablets.	Samples taken at 0, 0.25, 0.5, 0.75, 1.0, 1.25, 1.5, 2, 2.5, 3, 4, 5, 6, 8, 10, 11,12, 13, 14, 16, 18, 20, 22, and 24 hours (morning of Day 1) in both periods.

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Pharmacokinetic parameters for serum cortisol + relative bioavailability - Cmax	The following PK endpoint was derived from baseline adjusted and unadjusted serum cortisol concentration-time data following administration of each IMP. ◦ Cmax Maximum plasma cortisol concentration.	Samples taken at 0, 0.25, 0.5, 0.75, 1.0, 1.25, 1.5, 2, 2.5, 3, 4, 5, 6, 8, 10, 11,12, 13, 14, 16, 18, 20, 22, and 24 hours (morning of Day 1) in both periods.
Pharmacokinetic parameters for serum cortisol + relative bioavailability - Tmax	The following PK endpoint was derived from baseline adjusted and unadjusted serum cortisol concentration-time data following administration of each IMP. ◦ Tmax The time to maximum observed cortisol concentration sampled during a dosing interval.	Samples taken at 0, 0.25, 0.5, 0.75, 1.0, 1.25, 1.5, 2, 2.5, 3, 4, 5, 6, 8, 10, 11,12, 13, 14, 16, 18, 20, 22, and 24 hours (morning of Day 1) in both periods.
Pharmacokinetic parameters for serum cortisol + relative bioavailability - Kel	The following PK endpoint was derived from baseline adjusted and unadjusted serum cortisol concentration-time data following administration of each IMP. ◦ kel Elimination rate constant.	Samples taken at 0, 0.25, 0.5, 0.75, 1.0, 1.25, 1.5, 2, 2.5, 3, 4, 5, 6, 8, 10, 11,12, 13, 14, 16, 18, 20, 22, and 24 hours (morning of Day 1) in both periods.
Pharmacokinetic parameters for serum cortisol + relative bioavailability - t1/2	The following PK endpoint was derived from baseline adjusted and unadjusted serum cortisol concentration-time data following administration of each IMP. ◦ t1/2 Terminal half-life.	Samples taken at 0, 0.25, 0.5, 0.75, 1.0, 1.25, 1.5, 2, 2.5, 3, 4, 5, 6, 8, 10, 11,12, 13, 14, 16, 18, 20, 22, and 24 hours (morning of Day 1) in both periods.
Pharmacokinetic parameters for serum cortisol + relative bioavailability - AUC0-t	The following PK endpoint was derived from baseline adjusted and unadjusted serum cortisol concentration-time data following administration of each IMP. ◦ AUC0-t Area under the plasma cortisol concentration-time curve (AUC) from the time of dosing to the time of the last observed concentration.	Samples taken at 0, 0.25, 0.5, 0.75, 1.0, 1.25, 1.5, 2, 2.5, 3, 4, 5, 6, 8, 10, 11,12, 13, 14, 16, 18, 20, 22, and 24 hours (morning of Day 1) in both periods.
Pharmacokinetic parameters for serum cortisol - Serum cortisol clearance (CL/F)	Calculated as Dose / AUC0-inf. This PK endpoint was derived from baseline adjusted and unadjusted serum cortisol concentration-time data following administration of each IMP.	Samples taken at 0, 0.25, 0.5, 0.75, 1.0, 1.25, 1.5, 2, 2.5, 3, 4, 5, 6, 8, 10, 11,12, 13, 14, 16, 18, 20, 22, and 24 hours (morning of Day 1) in both periods.
Pharmacokinetic parameters for serum cortisol - Distribution during terminal elimination (Vz/F)	Volume of distribution based on the terminal elimination phase following extravascular administration derived from baseline adjusted and unadjusted serum cortisol	Samples taken at 0, 0.25, 0.5, 0.75, 1.0, 1.25, 1.5, 2, 2.5, 3, 4, 5, 6, 8, 10, 11,12, 13, 14, 16, 18, 20, 22, and 24 hours (morning of Day 1) in both periods.
Observed changes in Safety Laboratory Data	Observed changes in Safety Laboratory data (biochemistry, haematology & urinalysis) during the course of the study, with any out of normal range values flagged.	Screening, Pre-dose and 10h and 24h post-dose during both treatment periods; Follow up
Observed changes in Vital Signs	Observed changes in vital signs data (blood pressure, pulse rate and oral temperature) during the course of the study, with any out of normal range values flagged.	Screening; Pre-dose and at 4 and 10h post-dose during both treatment periods; Follow up
Observed changes in Electrocardiogram (ECG) data during the course of the study	12-Lead ECG parameters (Heart Rate, PR interval, QRS width, QT interval, and QT interval corrected using Bazett's formula (QTcB)) and investigator clinical interpretation was listed with any out of normal range values flagged.	Screening, Pre-dose and 10h post-dose during both treatment periods; Follow up
Adverse Events	Adverse events (AEs) observed throughout the study	Through study completion - approximately 6 weeks

Collaborators and Investigators

• Sponsor: Diurnal Limited
• Collaborators: Simbec Research; Brush Clinical Research Ltd.; Voet Consulting; Bionical Emas Ltd.; Medical Matters International Ltd
• Investigators: Principal Investigator: A Koch, Simbec Research

Study record dates

Study Major Dates

• Study Start (Actual): February 19, 2018
• Primary Completion (Actual): April 20, 2018
• Study Completion (Actual): April 20, 2018

Study Registration Dates

• First Submitted: October 31, 2017
• First Submitted That Met QC Criteria: November 10, 2017
• First Posted (Actual): November 17, 2017

Study Record Updates

• Last Update Posted (Actual): June 19, 2020
• Last Update Submitted That Met QC Criteria: June 17, 2020
• Last Verified: June 1, 2020

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Endocrine System Diseases; Adrenal Gland Diseases; Adrenal Insufficiency
• Other Study ID Numbers: DIUR-008

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: No

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: No
• product manufactured in and exported from the U.S.: Yes