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Trial registered on ANZCTR

Registration number
Ethics application status
Date submitted
Date registered
Date last updated
Date data sharing statement initially provided
Type of registration
Retrospectively registered

Titles & IDs
Public title
Type1Screen: Diabetes autoantibody screening to identify individuals at risk for type 1 diabetes
Scientific title
Type1 Screen: Diabetes autoantibody screening to identify individuals at risk for type 1 diabetes
Secondary ID [1] 300424 0
Universal Trial Number (UTN)
Trial acronym
Linked study record

Health condition
Health condition(s) or problem(s) studied:
Type 1 diabetes 316189 0
Condition category
Condition code
Metabolic and Endocrine 314481 314481 0 0

Study type
Patient registry
Target follow-up duration
Target follow-up type
Description of intervention(s) / exposure
The Type1Screen study provides antibody screening for individuals aged 2-30 years old; in particular screening is for IA2, GAD, ZnT8 and insulin antibodies.

For participants under the age of 18, repeat antibody screening will be offered every 5 years until adulthood (age 18 years).

Antibody screening is not part of routine clinical care and is being offered to family members who wish to know their risk of developing type 1 diabetes and, if the test is positive, wish to consider joining intervention trials that aim to delay or prevent progression to insulin dependence.

Participation involves reading and signing a consent form (20 minutes), completing an online survey (10 minutes) and presenting to a community blood collection centre for a blood test (30 minutes).
Intervention code [1] 316815 0
Early Detection / Screening
Comparator / control treatment
Control group

Primary outcome [1] 322811 0
The number of participants who test positive by blood test to one or more islet autoantibodies against insulin, GAD, IA2 and ZnT8.

Timepoint [1] 322811 0
Blood test that confirms the presence of one or more islet antibodies (usually the confirmatory test following the initial sample).
Secondary outcome [1] 379869 0
The development of diabetes defined as:
i) Unequivocal symptoms of diabetes (severe/persistent polyuria, polydipsia and/or
significant unexplained weight loss) AND at least one of the following:
• Random glucose greater than or equal to 11.1 mmol/L OR
• 2-hour glucose greater than or equal to 11.1 mmol/L 2 hours after an oral glucose load
(glucose dose 1.75g/kg up to a maximum of 75g) OR
• Fasting Glucose at least 7 mmol/L OR
• HbA1c at least 6.5%

ii) If not unequivocally symptomatic, two separate objective measures are required for
diagnosis. These tests must occur within 1 year of each other and must be
consecutive, defined as without an intervening non-diabetic oral glucose tolerance
test. The preferred criterion for diagnosis of this so-called ‘silent diabetes’ is the
finding of 2 consecutive diabetic oral glucose tolerance tests on separate days.
However, the following three combinations of results obtained on separate days can
also constitute a diagnosis of diabetes:
• Diabetic oral glucose tolerance test (glucose dose 1.75g/kg up to a maximum of
75g) with fasting glucose at least 7 mmol/L OR
• Diabetic oral glucose tolerance test (glucose dose 1.75g/kg up to a maximum of
75g) with HbA1c at least 6.5% OR
• Fasting Glucose at least 7 mmol/L and HbA1c at least 6.5%.

In all cases, the date of the confirmatory test will be recorded as the date of
Timepoint [1] 379869 0
Any time point during the study when the criteria for Secondary outcome 1 are met.

Key inclusion criteria
1. People aged 2 to 30 AND
2. Live in Australia or New Zealand AND
3. Have a relative diagnosed with type 1 diabetes OR have previously had a positive antibody screen
4. Participant or guardian willing and competent to provide informed consent.
Minimum age
2 Years
Maximum age
30 Years
Both males and females
Can healthy volunteers participate?
Key exclusion criteria
1. Someone with a diagnosis of diabetes (other than gestational diabetes which resolved after the baby was born)
2. Someone who is unable to give a blood test
3. A participant, or their legal guardian, who is unable to give consent to participate

Study design
Defined population
Statistical methods / analysis
This study does not test a specific hypothesis thus sample size justification and power calculation are not required. The data obtained will be analysed to generate descriptive dataset that, for example, describe rates of antibody positivity and of diabetes and their relationships to age, body mass index and duration of follow up in the study.

Recruitment status
Date of first participant enrolment
Date of last participant enrolment
Date of last data collection
Sample size
Accrual to date
Recruitment in Australia
Recruitment state(s)
Recruitment hospital [1] 15831 0
Royal Melbourne Hospital - City campus - Parkville
Recruitment hospital [2] 15904 0
Perth Children's Hospital - Nedlands
Recruitment hospital [3] 15905 0
Womens and Childrens Hospital - North Adelaide
Recruitment hospital [4] 15906 0
Monash Children’s Hospital - Clayton
Recruitment hospital [5] 15907 0
The Canberra Hospital - Garran
Recruitment hospital [6] 15908 0
The Children's Hospital at Westmead - Westmead
Recruitment hospital [7] 15909 0
Campbelltown Hospital - Campbelltown
Recruitment hospital [8] 15910 0
Royal North Shore Hospital - St Leonards
Recruitment hospital [9] 15911 0
Hunter Diabetes Centre - Merewether
Recruitment hospital [10] 15912 0
Queensland Children's Hospital - South Brisbane
Recruitment postcode(s) [1] 29367 0
2065 - St Leonards
Recruitment postcode(s) [2] 29365 0
2145 - Westmead
Recruitment postcode(s) [3] 29368 0
2291 - Merewether
Recruitment postcode(s) [4] 29366 0
2560 - Campbelltown
Recruitment postcode(s) [5] 29364 0
2605 - Garran
Recruitment postcode(s) [6] 29363 0
3168 - Clayton
Recruitment postcode(s) [7] 29369 0
4101 - South Brisbane
Recruitment postcode(s) [8] 29362 0
5006 - North Adelaide
Recruitment postcode(s) [9] 29361 0
6009 - Nedlands
Recruitment outside Australia
Country [1] 22343 0
New Zealand
State/province [1] 22343 0
Auckland & Otago

Funding & Sponsors
Funding source category [1] 304990 0
Name [1] 304990 0
Juvenile Diabetes Research Foundation Australia
Address [1] 304990 0
4/80-84 Chandos St, St Leonards NSW 2065
Country [1] 304990 0
Primary sponsor type
Government body
Melbourne Health
300 Grattan Street, Parkville, VIC, 3050
Secondary sponsor category [1] 305350 0
Name [1] 305350 0
Address [1] 305350 0
Country [1] 305350 0

Ethics approval
Ethics application status
Ethics committee name [1] 305254 0
Melbourne Health Human Research Ethics Committee
Ethics committee address [1] 305254 0
Melbourne Health Human Research Ethics Committee
Level 2
South West
300 Grattan Street
Parkville Victoria
Ethics committee country [1] 305254 0
Date submitted for ethics approval [1] 305254 0
Approval date [1] 305254 0
Ethics approval number [1] 305254 0

Brief summary
Type1Screen: Diabetes autoantibody screening to identify individuals at risk for type 1 diabetes

1) To identify individuals who have diabetes autoantibodies
2) To support antibody-positive individuals through a national network of diabetes centres and to perform metabolic testing to determine their risk of developing type 1 diabetes
Trial website
Trial related presentations / publications
Public notes
The Type1Screen service offers type 1 diabetes to antibody screening to unaffected family members. Those who test positive are supported by diabetes specialists in Australia and New Zealand and are offered opportunities to participate in clinical trials to prevent progression to insulin-dependent diabetes. Full information can be found at

Principal investigator
Name 99782 0
A/Prof John Wentworth
Address 99782 0
The Royal Melbourne Hospital
300 Grattan Street
Parkville, VIC, 3050
Country 99782 0
Phone 99782 0
+61 422922891
Fax 99782 0
Email 99782 0
Contact person for public queries
Name 99783 0
Ms Felicity Healy
Address 99783 0
The Royal Melbourne Hospital
300 Grattan Street
Parkville, VIC, 3050
Country 99783 0
Phone 99783 0
+61 3 9342 7063
Fax 99783 0
Email 99783 0
Contact person for scientific queries
Name 99784 0
A/Prof John Wentworth
Address 99784 0
The Royal Melbourne Hospital
300 Grattan Street
Parkville, VIC, 3050
Country 99784 0
Phone 99784 0
+61 422922891
Fax 99784 0
Email 99784 0

Data sharing statement
Will individual participant data (IPD) for this trial be available (including data dictionaries)?
What data in particular will be shared?
All data except identifiers, which include name, date of birth and contact information.
When will data be available (start and end dates)?
1/1/2020 until 1/1/2035
Available to whom?
Researchers who obtain ethical approval to use the data and whose request to use the data are deemed reasonable by the PI and other members of the study team.
Available for what types of analyses?
Studies relating to type 1 diabetes.
How or where can data be obtained?
Contact study PI at
What supporting documents are/will be available?
No other documents available
Summary results
No Results