Trial Review

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Trial registered on ANZCTR


Registration number
ACTRN12617000172303
Ethics application status
Approved
Date submitted
26/01/2017
Date registered
2/02/2017
Date last updated
1/07/2021
Date data sharing statement initially provided
1/07/2021
Date results information initially provided
1/07/2021
Type of registration
Prospectively registered

Titles & IDs
Public title
Comparative assessment of the absorption of a generic formulation of phentermine capsule against the innovator phentermine capsule conducted under fed conditions in healthy male and female volunteers in a pilot study
Scientific title
A single dose, randomized, blinded, bioequivalence pilot study of a test formulation of phentermine capsule in a 2 way crossover comparison against the innovator phentermine capsule conducted under fed conditions in healthy male and female volunteers
Secondary ID [1] 291006 0
None
Universal Trial Number (UTN)
U1111-1188-6172
Trial acronym
Linked study record

Health condition
Health condition(s) or problem(s) studied:
Bioequivalence pilot study conducted in healthy volunteers comparing two formulations of phentermine with no health condition or problem studied.

Although this study is being conducted in healthy volunteers who are not being treated for the condition to which the medicine is used, phentermine is a C5 Controlled Drug indicated in the management of obesity as a short-term adjunct in a medically monitored comprehensive regime of weight reduction. 301775 0
Condition category
Condition code
Diet and Nutrition 301468 301468 0 0
Obesity

Intervention/exposure
Study type
Interventional
Description of intervention(s) / exposure
Single dose, crossover study design whereby each participant receives the test formulation of phentermine oral capsule (1 x 40 mg) on one occasion and the innovator formulation of phentermine oral capsul (1 x 40 mg) on one occasion with each dose seperated by a two week washout period. The intervention for this trial is the test formulation of phentermine.

No water is allowed for 1 hour prior to dosing until 1 hour after dosing (except for the water consumed with the dose).

Participants are required not to eat for 10 hours prior to receiving breakfast. Subjects will be provided with a standardised high fat breakfast which they must start eating 30 minutes prior to dosing. Subjects are required to fast for approximately 4 hours after receiving each dose. Bathroom visits will be supervised to ensure no unauthorised water or food intake and for personal safety. Participants will be confined at the Clinical Site for 10 hours prior to dosing to ensure compliance and will be monitored for 24 hours including vital signs.

Standard meals will be consumed at the Clinical Site with no additional food intake allowed. Alcohol breath testing will be performed upon each participant reporting to the Clinical Site 10 hours prior to dosing.

Pre and post study laboratory tests will be completed to assess the health of participants along with HIV, Hepatitis and drugs of abuse testing.

Each dose will be taken orally with 240 ml of water at ambient temperature. Medication must be swallowed whole and a mouth check will be conducted to ensure the medication has been taken as directed.
Intervention code [1] 296971 0
Treatment: Drugs
Comparator / control treatment
Single dose, crossover pilot study design whereby each participant receives the test formulation of phentermine (1 x 40 mg) on one occasion and the innovator formulation of phentermine (1 x 40 mg) on one occasion with each dose seperated by a two week washout period. The comparator/control for this trial is the innovator formulation of phentermine.
Control group
Active

Outcomes
Primary outcome [1] 300863 0
To compare the bioavailability of phentermine (as summarised by Cmax and AUC) for the formulation. All plasma samples will be assayed for phentermine using one fully validated LC/MS/MS method. Validation will be conducted to comply with EU and FDA guidelines.
Timepoint [1] 300863 0
0, 0.5, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 20, 24, 32, 48, 56 and 72 hours post dosing
Secondary outcome [1] 331068 0
Time to maximum peak concentration (Tmax) will be determined by plasma sample analysis. Tmax will be the time where the maximum concentration occurred in the sample points.
Timepoint [1] 331068 0
0, 0.5, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 20, 24, 32, 48, 56 and 72 hours post dosing

Eligibility
Key inclusion criteria
Healthy male and non-pregnant females
Aged between 18 and 55
Non-smoker
BMI between 18 and 30 inclusive
Normal, healthy individuals as determined by medical history, physical examination, ECG, blood pressure and laboratory tests
Able to provide written informed consent
Minimum age
18 Years
Maximum age
55 Years
Sex
Both males and females
Can healthy volunteers participate?
Yes
Key exclusion criteria
Any history of recent recurrent attacks of bronchitis, asthma, migraine headaches
Concomitant drug therapy of any kind (in particular monoamine oxidase inhibitors)
Sensitivity to phentermine or any other similar class of medicines, or the excipients of phentermine
Any history of psychiatric illness including anorexia nervosa and depression
History of any conditions that might interfere with the absorption, distribution, metabolism or excretion of the drug
Females who are pregnant and/or are breastfeeding
Smoker (anyone who has smoked in the last 6 months)
History of alcohol or drug abuse or dependency
Participation in a drug study within 60 days of the start of the study or donated blood in the 60 days preceding the study.
Volunteers for whom the Clinical Investigator believes, for any reason, that participation would not be an acceptable risk

Study design
Purpose of the study
Treatment
Allocation to intervention
Randomised controlled trial
Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
All formulations will be labelled as Formulation A and B. The identification of each treatment will only be known to the Managing Director and the Section Head - Trials and Regulatory Affairs.

Each participant will be identified by a 3 digit screening number and a 2 digit subject number. The screening number will be issued once the participant has given written consent to participate in the study and the two digit subject number (randomisation number) after acceptance into the study
Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Randomisation list will be prepared using a computer program for a balanced two-way crossover design.
Masking / blinding
Blinded (masking used)
Who is / are masked / blinded?
The people receiving the treatment/s
The people administering the treatment/s
The people assessing the outcomes
The people analysing the results/data
Intervention assignment
Crossover
Other design features
Phase
Phase 1
Type of endpoint/s
Bio-equivalence
Statistical methods / analysis

Recruitment
Recruitment status
Completed
Date of first participant enrolment
Anticipated
3/02/2017
Actual
8/02/2017
Date of last participant enrolment
Anticipated
Actual
28/02/2017
Date of last data collection
Anticipated
Actual
21/03/2017
Sample size
Target
10
Accrual to date
Final
13
Recruitment outside Australia
Country [1] 8605 0
New Zealand
State/province [1] 8605 0
Otago

Funding & Sponsors
Funding source category [1] 295433 0
Commercial sector/Industry
Name [1] 295433 0
Aspen Australia
Country [1] 295433 0
Australia
Primary sponsor type
Commercial sector/Industry
Name
Zenith Technology Corp Ltd
Address
156 Frederick St
Dunedin 9016
Country
New Zealand
Secondary sponsor category [1] 294253 0
None
Name [1] 294253 0
Address [1] 294253 0
Country [1] 294253 0

Ethics approval
Ethics application status
Approved
Ethics committee name [1] 296766 0
Northern A Health and Disability Ethics Committee
Ethics committee address [1] 296766 0
Ministry of Health
Freyberg Building
20 Aitken Street
PO Box 5013
Wellington 6011
Ethics committee country [1] 296766 0
New Zealand
Date submitted for ethics approval [1] 296766 0
02/11/2016
Approval date [1] 296766 0
31/01/2017
Ethics approval number [1] 296766 0
16/NTA/192

Summary
Brief summary
The objective of this study is to evaluate the bioequivalence of the test (new) formulation of 1 x 40 mg phentermine oral capsule against the reference formulation (innovator brand of 1 x 40 mg phentermine oral capsule) following oral administration of a single dose of 40 mg in healthy male and female subjects under fed conditions.
Trial website
Trial related presentations / publications
Public notes

Contacts
Principal investigator
Name 71994 0
Dr Noelyn Hung
Address 71994 0
Zenith Technology Corporation Limited
156 Frederick Street (PO Box 1777)
Dunedin 9016
Country 71994 0
New Zealand
Phone 71994 0
+6434779669
Fax 71994 0
+6434779605
Email 71994 0
[email protected]
Contact person for public queries
Name 71995 0
Mrs Linda Folland
Address 71995 0
Zenith Technology Corporation Limited
156 Frederick Street (PO Box 1777)
Dunedin 9016
Country 71995 0
New Zealand
Phone 71995 0
+6434779669
Fax 71995 0
+6434779605
Email 71995 0
[email protected]
Contact person for scientific queries
Name 71996 0
Dr Tak Hung
Address 71996 0
Zenith Technology Corporation Limited
156 Frederick Street (PO Box 1777)
Dunedin 9016
Country 71996 0
New Zealand
Phone 71996 0
+6434779669
Fax 71996 0
+6434779605
Email 71996 0
[email protected]

Data sharing statement
Will individual participant data (IPD) for this trial be available (including data dictionaries)?
No
No/undecided IPD sharing reason/comment
All data will be compiled into a final report that is the property of the sponsor company. All participant data will be provided in summary format and result of the study only will be reported


What supporting documents are/will be available?

No Supporting Document Provided



Results publications and other study-related documents

Documents added manually
No documents have been uploaded by study researchers.

Documents added automatically
No additional documents have been identified.