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Trial registered on ANZCTR


Registration number
ACTRN12616001090404
Ethics application status
Approved
Date submitted
9/08/2016
Date registered
12/08/2016
Date last updated
2/02/2017
Type of registration
Prospectively registered

Titles & IDs
Public title
Comparative assessment of the absorption of a generic formulation of phentermine tablet against the innovator phentermine tablet conducted under fed conditions in healthy male and female volunteers
Scientific title
A single dose, randomized, blinded, bioequivalence study of a test formulation of phentermine tablet in a 2 way crossover comparison against the innovator phentermine tablet conducted under fed conditions in healthy male and female volunteers
Secondary ID [1] 289836 0
None
Universal Trial Number (UTN)
U1111-1184-8382
Trial acronym
Linked study record

Health condition
Health condition(s) or problem(s) studied:
Bioequivalence 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.
299766 0
Condition category
Condition code
Diet and Nutrition 299700 299700 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 tablet (1 x 40 mg) on one occasion and the innovator formulation of phentermine oral tablet (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] 295515 0
Treatment: Drugs
Comparator / control treatment
Single dose, crossover 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] 299160 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] 299160 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] 326358 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] 326358 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
Gender
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
Actual
Date of last participant enrolment
Anticipated
Actual
Date of last data collection
Anticipated
Actual
Sample size
Target
Accrual to date
Final
Recruitment outside Australia
Country [1] 8073 0
New Zealand
State/province [1] 8073 0
Otago

Funding & Sponsors
Funding source category [1] 294216 0
Commercial sector/Industry
Name [1] 294216 0
Juno PC Holdings Pty Ltd
Address [1] 294216 0
Level 13, 9 Yarra Street
South Yarra
VIC 3141
Country [1] 294216 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] 293049 0
None
Name [1] 293049 0
Address [1] 293049 0
Country [1] 293049 0

Ethics approval
Ethics application status
Approved
Ethics committee name [1] 295625 0
Northern A Health and Disability Ethics Committee
Ethics committee address [1] 295625 0
Ministry of Health
Freyberg Building
20 Aitken Street
PO Box 5013
Wellington 6011
Ethics committee country [1] 295625 0
New Zealand
Date submitted for ethics approval [1] 295625 0
30/06/2016
Approval date [1] 295625 0
22/07/2016
Ethics approval number [1] 295625 0
16/NTA/95

Summary
Brief summary
The objective of this study is to evaluate the bioequivalence of the test (new) formulation of 1 x 40 mg phentermine tablet against the reference formulation (innovator brand of 1 x 40 mg phentermine tablet) 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 67986 0
Dr Noelyn Hung
Address 67986 0
Zenith Technology Corporation Limited
156 Frederick Street (PO Box 1777)
Dunedin 9016
Country 67986 0
New Zealand
Phone 67986 0
+6434779669
Fax 67986 0
+6434779605
Email 67986 0
noelyn.hung@otago.ac.nz
Contact person for public queries
Name 67987 0
Mrs Linda Folland
Address 67987 0
Zenith Technology Corporation Limited
156 Frederick Street (PO Box 1777)
Dunedin 9016
Country 67987 0
New Zealand
Phone 67987 0
+6434779669
Fax 67987 0
+6434779605
Email 67987 0
linda.folland@zenithtechnology.co.nz
Contact person for scientific queries
Name 67988 0
Dr Tak Hung
Address 67988 0
Zenith Technology Corporation Limited
156 Frederick Street (PO Box 1777)
Dunedin 9016
Country 67988 0
New Zealand
Phone 67988 0
+6434779669
Fax 67988 0
+6434779605
Email 67988 0
tak.hung@zenithtechnology.co.nz

No information has been provided regarding IPD availability
Summary results
Have study results been published in a peer-reviewed journal?
Other publications
Have study results been made publicly available in another format?
Results – basic reporting
Results – plain English summary