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Trial registered on ANZCTR
Registration number
ACTRN12620000152921
Ethics application status
Approved
Date submitted
23/01/2020
Date registered
13/02/2020
Date last updated
13/02/2020
Date data sharing statement initially provided
13/02/2020
Type of registration
Retrospectively registered
Titles & IDs
Public title
Identifying a biomarker of coffee consumption in urine
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Scientific title
Identification of coffee metabolites in the urine of human participants following coffee consumption
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Secondary ID [1]
300351
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Nil
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Universal Trial Number (UTN)
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Coffee consumption
315964
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Condition category
Condition code
Diet and Nutrition
314235
314235
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0
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Other diet and nutrition disorders
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Metabolic and Endocrine
314407
314407
0
0
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Normal metabolism and endocrine development and function
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
During the study day, participants will attend the research facility after an overnight fast and provide a fasted urine sample. Participants will also be asked to avoid coffee/coffee products for 10 hours prior to collection of this fasting urine sample. Following this, participants will be given a coffee to drink (4 g instant coffee in 150 mL hot water) by a dietitian or trained researcher. Participants will then continue collecting their own urine for the next 24 hours, into provided containers. Participants are also asked to consume no more coffee during those 24 hours, but can otherwise eat and drink ad libitum. Participants returned their collected urine the following morning.
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Intervention code [1]
316628
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Treatment: Other
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Intervention code [2]
316749
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Early detection / Screening
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Comparator / control treatment
No control group.
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Control group
Uncontrolled
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Outcomes
Primary outcome [1]
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Detection of metabolites of dimethoxycinnamic acid in the urine of participants post-coffee consumption by LCMS analysis
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Assessment method [1]
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Timepoint [1]
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24 hour urine sample post-coffee consumption.
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Secondary outcome [1]
379087
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No secondary outcomes
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Assessment method [1]
379087
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Timepoint [1]
379087
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Not applicable
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Eligibility
Key inclusion criteria
Adults able to provide informed consent.
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Minimum age
18
Years
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Maximum age
No limit
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Sex
Both males and females
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Can healthy volunteers participate?
Yes
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Key exclusion criteria
• Diagnosed medical conditions that affect the gastrointestinal tract or metabolism
• Urinary tract infections or other conditions related to the bladder.
• Any dietary allergies that prevent consuming coffee.
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Study design
Purpose of the study
Treatment
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Allocation to intervention
Non-randomised trial
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Not applicable - single group study.
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Not applicable - single group study.
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Masking / blinding
Open (masking not used)
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Who is / are masked / blinded?
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Intervention assignment
Single group
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Other design features
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Phase
Not Applicable
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Type of endpoint/s
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Statistical methods / analysis
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Recruitment
Recruitment status
Completed
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Date of first participant enrolment
Anticipated
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Actual
13/11/2019
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Date of last participant enrolment
Anticipated
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Actual
11/12/2019
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Date of last data collection
Anticipated
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Actual
18/12/2019
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Sample size
Target
10
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Accrual to date
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Final
10
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Recruitment in Australia
Recruitment state(s)
VIC
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Funding & Sponsors
Funding source category [1]
304774
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University
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Name [1]
304774
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Monash University
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Address [1]
304774
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Wellington Rd, Clayton VIC 3800
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Country [1]
304774
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Australia
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Primary sponsor type
University
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Name
Monash University
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Address
Wellington Rd, Clayton VIC 3800
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Country
Australia
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Secondary sponsor category [1]
305090
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None
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Name [1]
305090
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None
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Address [1]
305090
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None
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Country [1]
305090
0
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
305189
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Monash University Human Research Ethics Committee
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Ethics committee address [1]
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Wellington Rd, Clayton VIC 3800
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Ethics committee country [1]
305189
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Australia
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Date submitted for ethics approval [1]
305189
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Approval date [1]
305189
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12/11/2019
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Ethics approval number [1]
305189
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Project 21719
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Summary
Brief summary
Antioxidants are naturally-occurring compounds found in plant-derived foods and beverages, such as coffee. The antioxidants we are going to focus on in this study are the chlorogenic acids. These are a family of strong antioxidants present in coffee that may show some health benefits. The amount of chlorogenic acid intake in a typical diet is high and, for people who drink it, coffee is the major dietary source of these antioxidants. Coffee contains high levels of chlorogenic acids which consist of phenolic acids including caffeic acid, ferulic acid and dimethoxycinnamic acid. Dimethoxycinnamic acid (DMCA) is found at high levels in coffee, and is very well absorbed. It is found in the bloodstream just a few minutes after drinking. However, the final form in urine is a mystery. Since DMCA is only found in significant amounts in coffee, then if we could find the chemical form in urine, it could be a useful biomarker of coffee intake in populations. Knowing the chemical form would also allow us to define its pathway of metabolism.
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Trial website
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Trial related presentations / publications
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Public notes
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Contacts
Principal investigator
Name
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Prof Gary Williamson
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Address
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Department of Nutrition, Dietetics and Food, Level 1, 264 Ferntree Gully Road, Notting Hill VIC 3168
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Country
99546
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Australia
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Phone
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+61 3 99056649
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Fax
99546
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Email
99546
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[email protected]
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Contact person for public queries
Name
99547
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Gary Williamson
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Address
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Department of Nutrition, Dietetics and Food, Level 1, 264 Ferntree Gully Road, Notting Hill VIC 3168
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Country
99547
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Australia
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Phone
99547
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+61 3 99056649
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Fax
99547
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Email
99547
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[email protected]
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Contact person for scientific queries
Name
99548
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Gary Williamson
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Address
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Department of Nutrition, Dietetics and Food, Level 1, 264 Ferntree Gully Road, Notting Hill VIC 3168
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Country
99548
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Australia
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Phone
99548
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+61 3 99056649
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Fax
99548
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Email
99548
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[email protected]
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Data sharing statement
Will individual participant data (IPD) for this trial be available (including data dictionaries)?
Yes
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What data in particular will be shared?
After de-identification, individual participant data underlying published results will be available.
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When will data be available (start and end dates)?
Immediately following publication, no end date
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Available to whom?
Case-by-case basis at the discretion of Primary Investigator
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Available for what types of analyses?
For the purpose of conducting meta-analyses.
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How or where can data be obtained?
Access subject to approvals by Principal Investigator (
[email protected]
)
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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.
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