Type 1 DiabetesNCT00173628
Autoantibodies in Patients With Type 1 Diabetes Mellitus
An observational study of Type 1 Diabetes, run by National Taiwan University Hospital at 1 site in Taiwan.
Trial summary
Evaluate the autoantibodies, such as glutamic acid decarboxylase (GAD65), tyrosine phosphatase (IA-2 or ICA125), islet autoantibodies (IAA) and other associated autoimmune autoantibodies: microsomal antibodies, thyroglobulin antibodies, gastric parietal cell antibodies in patients with type 1 DM. Read more about this study
- Who is it for?
- Ages 1 day to 20 yearsHealthy volunteers can take part
- Conditions the study is for
- Type 1 Diabetes
- What is being tested?
- blood drawing
- Type of treatment
- Surgery or procedure
- How many people
- 150 participants
- Where
- 1 siteTaiwan
- Study dates
- Jan 1990to Dec 2006
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 1 day to 20 years
- All sexes
- Healthy volunteers accepted
- Child, Adult
Who may be able to join
- pediatric patients with type 1 diabetes
Who cannot join
None listed.
Trial locations and contacts
1 site in 1 country.
Taiwan1 site, 1 recruiting
- Recruiting
National Taiwan University Hospital
Taipei
Yi-Ching Tung, MD, 886-2-23123456 ext. 5130, dtped004@yahoo.com.tw
About this study
Evaluate the autoantibodies, such as glutamic acid decarboxylase (GAD65), tyrosine phosphatase (IA-2 or ICA125), islet autoantibodies (IAA) and other associated autoimmune autoantibodies: microsomal antibodies, thyroglobulin antibodies, gastric parietal cell antibodies in patients with type 1 DM.
Read the detailed description
Type 1 diabetes mellitus (DM) is a common disease in pediatric endocrine clinic and epidemiological studies showed the racial variation in the incidence, with the highest of 35 cases per 100000 in Finland. The incidence of type 1 DM in Taiwan is reported to be 1.5 per 100000 for the population less than 30 years old. While the diagnosis is made, the residual islet cell function is only about 20% of normal population. Therefore, the principle therapy in these patients is insulin therapy lifelong.
The pathogenesis of type 1 diabetes mellitus is multifactorial and controversial, involving the genetic and environmental factors. Type 1 DM is an autoimmune disease, which is T cell mediated islet cell destruction. Ninety percent of patients with type 1 DM express at least one of the autoantibodies to the islet. Antibodies to glutamic acid decarboxylase 65 (GAD65) were observed in 60-80% of such patients, which were considered the most important autoantigens. The autoantibodies disappeared successively after diagnosis and decreased in concentrations over time, but titers of antibodies to GAD65 had been observed fluctuated in patients with type 1 DM.
The prevalence of GAD antibodies, insulin autoantibodies, IA-2 (tyrosine phosphatase) were reported as 45-67%, 23-67% and 49%, respectively in Taiwan. Other associated autoimmune disease, such as autoimmune thyroiditis were reported as 13-24%. Such differences may be caused by the enrolling criteria and different age population. Therefore, we want to elucidate the role of autoantibodies in the pathogenesis of type 1 DM.
- Conditions
- Type 1 Diabetes
- Being tested
- blood drawing
- Medical subject headings
- Diabetes Mellitus, Type 1
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
blood drawingProcedure or surgery
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted15 Sep 2005 (estimated)
- Study startJan 1990
- Study completionDec 2006
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Type 1 DiabetesStudies of the same condition, open and under way.
- More trials run by National Taiwan University HospitalThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Defined population
- Time perspective
- Other
- Enrolment
- 150 participants
Sponsor and investigators
- Lead sponsor
- National Taiwan University Hospital
- Sponsor type
- University, hospital or other
- Investigators
- Yi-Ching Tung, MD, Principal investigator, National Taiwan University Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00173628
- Sponsor's protocol ID
- 9461700824
- Status last verified
- Aug 2005
- First submitted
- 12 Sep 2005
- Last updated
- 21 Dec 2005
- Results posted
- No
Study at a glance
From the registry record, last updated by the sponsor on 21 Dec 2005. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Autoantibodies in Patients With Type 1 Diabetes Mellitus
- ClinicalTrials.gov ID
- NCT00173628
- Acronym / sponsor ID
- 9461700824
- Conditions
- Type 1 Diabetes
- Study type
- Observational
- Recruitment status
- Unknown status
- Enrolment
- 150 participants
- Lead sponsor
- National Taiwan University HospitalUniversity, hospital or other
- Study start
- Jan 1990
- Study completion
- Dec 2006
- First posted
- 15 Sep 2005 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Evaluate the autoantibodies, such as glutamic acid decarboxylase (GAD65), tyrosine phosphatase (IA-2 or ICA125), islet autoantibodies (IAA) and other associated autoimmune autoantibodies: microsomal antibodies, thyroglobulin antibodies, gastric parietal cell antibodies in patients with type 1 DM.
Detailed description
Type 1 diabetes mellitus (DM) is a common disease in pediatric endocrine clinic and epidemiological studies showed the racial variation in the incidence, with the highest of 35 cases per 100000 in Finland. The incidence of type 1 DM in Taiwan is reported to be 1.5 per 100000 for the population less than 30 years old. While the diagnosis is made, the residual islet cell function is only about 20% of normal population. Therefore, the principle therapy in these patients is insulin therapy lifelong.
The pathogenesis of type 1 diabetes mellitus is multifactorial and controversial, involving the genetic and environmental factors. Type 1 DM is an autoimmune disease, which is T cell mediated islet cell destruction. Ninety percent of patients with type 1 DM express at least one of the autoantibodies to the islet. Antibodies to glutamic acid decarboxylase 65 (GAD65) were observed in 60-80% of such patients, which were considered the most important autoantigens. The autoantibodies disappeared successively after diagnosis and decreased in concentrations over time, but titers of antibodies to GAD65 had been observed fluctuated in patients with type 1 DM.
The prevalence of GAD antibodies, insulin autoantibodies, IA-2 (tyrosine phosphatase) were reported as 45-67%, 23-67% and 49%, respectively in Taiwan. Other associated autoimmune disease, such as autoimmune thyroiditis were reported as 13-24%. Such differences may be caused by the enrolling criteria and different age population. Therefore, we want to elucidate the role of autoantibodies in the pathogenesis of type 1 DM.
Study design
- Observational model
- Defined population
- Time perspective
- Other
Who may qualify
- Ages
- 1 day to 20 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult
Key inclusion criteria (1 listed)
- pediatric patients with type 1 diabetes
Key exclusion criteria (0 listed)
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| blood drawing | Procedure or surgery | – |
Primary outcome
Not reported in the source record.
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 21 Dec 2005.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Yi-Ching Tung, MD principal investigator
National Taiwan University Hospital
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Type 1 Diabetes, run by National Taiwan University Hospital at 1 site in Taiwan.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 0 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: status not confirmed, as of the sponsor's last update on 21 Dec 2005. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Taiwan. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact Yi-Ching Tung, MD (886-2-23123456 ext. 5130, dtped004@yahoo.com.tw), or a site near the patient. AzTrials does not enrol participants or take referrals.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 21 Dec 2005.