China Diabetes Type 1 Study (CD1S) by China Alliance for Type 1 Diabetes
Recruiting
Observational Study
Type1diabetesDiabetes
No Placebo Group
Every participant receives an active treatment — no one gets a placebo.
No Study Drug
Researchers observe your health over time — no experimental treatment is given.
Ready to participate?
Review the details below, then apply to join this clinical trial.
At a Glance
Sex
Any
Study type
Observational
Participants needed
20,000 (estimated)
Sponsor
Second Xiangya Hospital of Central South University · Other
Who this trial is looking for
This trial is looking for patients with type 1 diabetes, especially those diagnosed before the age of 20. Participants will be part of a study that collects information about their health and diabetes management.
Are You a Good Fit for This Trial?
You may be able to join if
I have type 1 diabetes
I was diagnosed with diabetes before age 20
You may not be able to join if
I have not needed insulin for at least 6 months after my diabetes diagnosis
I have had no episodes of diabetic ketoacidosis for the past month if I have had diabetes for more than a year
My C-peptide levels have been above 800 pmol/L at any time
Summarized in plain language from this trial's official eligibility criteria.
The full criteria are further down this page — only the research team can
confirm whether you qualify.
Think this trial could be right for you?
Answer a few quick questions to see if you may meet the eligibility requirements.
The aim of the China Diabetes Type 1 Study (CD1S) is to conduct a nationwide type 1 diabetes (T1D) registry study in patients with T1D and in pediatric adolescent patients with diabetes who had an age of onset \<= 20 years.
CD1S compromises a retrospective study enrolling inpatients hospitalized from Jan 1st, 2016 to Dec 31, 2021, and a prospective study beginning from the year 2022.
Trial Locations
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Eligibility Criteria
Inclusion Criteria:
* 1\. Patients with type 1 diabetes mellitus of any duration; meeting criteria (1) or any of (2) or any of (3)
1. Clinical diagnosis of type 1 diabetes by a specialist
2. Age at onset \< 15 years; no overweight or obesity at onset; previous diabetic ketoacidosis; highest ra…
Inclusion Criteria:
* 1\. Patients with type 1 diabetes mellitus of any duration; meeting criteria (1) or any of (2) or any of (3)
1. Clinical diagnosis of type 1 diabetes by a specialist
2. Age at onset \< 15 years; no overweight or obesity at onset; previous diabetic ketoacidosis; highest random C-peptide \< 200 pmol/L
3. Initiation and continuation of insulin therapy (except pancreatic or islet transplantation) after diagnosis; positive islet autoantibodies Or 2. Children and adolescents with diabetes mellitus at age of onset \<= 20 years, regardless of type and duration of disease.
Exclusion Criteria:
* For enrolment of patients with T1D, exclusion was made if any of the following criteria were met (not applicable to those with onset under 20 years of age)
* No insulin dependence for at least 6 months after diagnosis of diabetes mellitus.
* No DKA for 1 month off insulin for those with a history of diabetes \> 1 year. ③ C-peptide \> 800 pmol/L at any time point.
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