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Trial registered on ANZCTR
Registration number
ACTRN12614000152628
Ethics application status
Approved
Date submitted
30/01/2014
Date registered
7/02/2014
Date last updated
18/11/2016
Type of registration
Prospectively registered
Titles & IDs
Public title
A study to estimate the changes in serum periostin levels in adult patients, following dental extractions with or without surgery.
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Scientific title
A study to estimate the magnitude and time course changes in serum periostin levels in adult patients, following either simple tooth extraction, or tooth extraction involving surgery
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Secondary ID [1]
284012
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Nil known
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Universal Trial Number (UTN)
U1111-1150-3950
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Trial acronym
PER05
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Serum Periostin levels following dental extractions
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Condition category
Condition code
Oral and Gastrointestinal
291387
291387
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0
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Other diseases of the mouth, teeth, oesophagus, digestive system including liver and colon
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Intervention/exposure
Study type
Observational
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Patient registry
False
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Target follow-up duration
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Target follow-up type
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Description of intervention(s) / exposure
Serum Periostin levels
Serum Periostin levels will be measured at 7 time points: Baseline (up to 1 week prior to tooth extraction/surgery), Week 1, Week 2, Week 3, Week 4, Week 6 and Week 12 post extraction, via a specific periostin laboratory assay.
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Intervention code [1]
288696
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Not applicable
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Comparator / control treatment
N/A - observational study
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Control group
Uncontrolled
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Outcomes
Primary outcome [1]
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Serum periostin levels over a 12 week period following dental extraction
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Assessment method [1]
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Timepoint [1]
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Serum Periostin levels will be measured at 7 time points: Baseline (up to 1 week prior to tooth extraction/surgery), Week 1, Week 2, Week 3, Week 4, Week 6 and Week 12 post extraction, via a specific periostin laboratory assay.
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Secondary outcome [1]
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Associations between serum periostin and non-asthmatic health conditions (as captured by general health questionnaire e.g. diabetes)
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Assessment method [1]
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Timepoint [1]
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Baseline (up to 1 week prior to dental extraction/ surgery)
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Eligibility
Key inclusion criteria
Aged between 18 to 75 years
Able to provide informed consent
Scheduled for dental extraction +/- surgery
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Minimum age
18
Years
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Maximum age
75
Years
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Sex
Both males and females
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Can healthy volunteers participate?
No
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Key exclusion criteria
Doctor’s diagnosis of Asthma, Bronchitis or COPD
Wheezing or use of respiratory inhalers in the past 12 months
Known pregnancy
Significant co morbidities (determined at investigator discretion)
Hospital admission within last 3 months
Surgery within last 3 months, determined at investigator discretion (this includes all major surgery requiring general anaesthetic, dental extractions and root canal procedures. This does not include minor procedures, including but not limited to mole or wart removal, dental fillings etc).
Oral or Systemic Corticosteroids within the last 3 months
Any other safety concern at the investigator’s discretion
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Study design
Purpose
Natural history
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Duration
Longitudinal
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Selection
Defined population
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Timing
Prospective
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Statistical methods / analysis
34 participants (in each group) are sufficient to detect a paired difference in periostin of 0.5 of a standard deviation with 80% power. The conventional interpretation of an effect size of 0.5 of a standard deviation is of a medium effect size. For a comparison between large and small dental procedures a sample size of 68 has a 90% power to detect a 0.8 standard deviation difference, a large effect size difference.
The periostin levels will be plotted against time and a non-parametric scatter plot smoother will be used to determine if there is a pattern of variation with time that might be usefully explored with parametric regression (e.g. linear, quadratic, cubic time terms). Paired t-test and mixed linear models will be used to compare the 12 week periostin level with measurements at the other times to formally compare the change with time.
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Recruitment
Recruitment status
Completed
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Date of first participant enrolment
Anticipated
17/02/2014
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Actual
3/03/2015
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Date of last participant enrolment
Anticipated
30/06/2016
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Actual
22/08/2016
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Date of last data collection
Anticipated
15/11/2016
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Actual
28/10/2016
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Sample size
Target
68
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Accrual to date
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Final
68
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Recruitment outside Australia
Country [1]
5789
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New Zealand
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State/province [1]
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Wellington
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Funding & Sponsors
Funding source category [1]
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Commercial sector/Industry
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Name [1]
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Genentech, Inc.
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Address [1]
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Genentech, Inc.
1 DNA Way, South San Francisco,
CA 94080-4990
USA
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Country [1]
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United States of America
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Primary sponsor type
Charities/Societies/Foundations
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Name
Medical Research Institute of New Zealand
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Address
Medical Research Institute of New Zealand
Level 7 CSB, Wellington Hospital
Riddiford Street
Newtown
Wellington 6021
New Zealand
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Country
New Zealand
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Secondary sponsor category [1]
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None
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Name [1]
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Address [1]
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Country [1]
287341
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
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Northern B HDEC
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Ethics committee address [1]
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Health and Disability Ethics Committees Ministry of Health C/- MEDSAFE, Level 6, Deloitte House 10 Brandon Street PO Box 5013 Wellington 6011
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Ethics committee country [1]
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New Zealand
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Date submitted for ethics approval [1]
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Approval date [1]
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15/01/2014
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Ethics approval number [1]
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13/NTB/187
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Summary
Brief summary
Levels of POSTN (a protein-coding gene, also known as osteoblast specific factor) gene expression and periostin have been measured in a number of tissues and disease states. Periostin is associated with type I collagen in the periodontal ligament where it regulates the biomechanical properties of connective tissue around the tooth. Increased expression of the POSTN gene has been measured in the periodontal ligament on occlusal loading, investigators concluding that periostin is therefore essential for the integrity and function of the ligament. The serum levels of periostin following dental surgery have not yet been investigated. This study of the magnitude and longitudinal changes in serum periostin levels in participants undergoing dental surgery endeavours to determine the clinical significance of periostin following dental surgery. Results from this study will provide a clearer picture of periostin production and further the development of periostin as a serum biomarker for asthma, as part of a programme of research being conducted at the Medical Research Institute of New Zealand.
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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 Richard Beasley
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Address
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Medical Research Institute of New Zealand Private Bag 7902, Wellington 6242
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Country
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New Zealand
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Phone
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+64 4 805 0147
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Fax
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Email
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[email protected]
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Contact person for public queries
Name
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Rachel Caswell-Smith
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Address
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Medical Research Institute of New Zealand Private Bag 7902, Wellington 6242
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Country
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New Zealand
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Phone
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+64 4 805 0247
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Fax
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Email
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[email protected]
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Contact person for scientific queries
Name
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Rachel Caswell-Smith
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Address
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Medical Research Institute of New Zealand Private Bag 7902, Wellington 6242
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Country
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New Zealand
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Phone
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+64 4 805 0247
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Fax
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Email
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[email protected]
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No information has been provided regarding IPD availability
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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