Type 1 Diabetes Prediction and Prevention (DIPP) Study (DIPP)

April 6, 2023 updated by: Riitta Veijola
The Type 1 Diabetes Prediction and Prevention (DIPP) Study in Finland is a population-based long-term clinical follow-up study established since 1994 in three university hospitals in Finland to understand the pathogenesis of type 1 diabetes (T1D), predict the disease, and find preventive treatment.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Briefly, cord blood samples are collected and HLA-DR-DQ genotypes are determined from newborn babies. Families with a newborn baby carrying a DR-DQ genotype associated with increased risk for T1D are invited to participate in regular follow-up at the age of 3, 6, 9, 12, 18 and 24 months, and thereafter once a year until the age of 15 years or until T1D is diagnosed. Clinical details including maternal diet during pregnancy and lactation and child's diet starting from the age of 3 months are recorded, blood samples are collected, and serum autoantibodies associated with development of T1D are measured. Children who develop beta-cell specific autoimmunity are followed more intensively with measurements of glucose metabolism parameters such as glycated haemoglobin A1c (HbA1c), oral glucose tolerance tests (OGTT) and intravenous glucose tolerance tests (IVGTT). In the DIPP Study more than 1000 children have developed multiple islet autoantibodies and more than 450 of these have progressed to clinical T1D. It has been estimated that 5% of children in the follow-up will develop T1D and 60% of future T1D cases will be reached by the current screening and follow-up strategy.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Anticipated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
17000

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • Finland
      • Oulu, Finland, 90029
        • Recruiting
        • University of Oulu and Oulu University Hospital
        • Contact:
        • Principal Investigator:
          • Riitta Veijola, MD
      • Tampere, Finland, 33520
        • Recruiting
        • University of Tampere and Tampere University Hospital
        • Contact:
        • Principal Investigator:
          • Mikael Knip, MD
      • Turku, Finland, 20520
        • Recruiting
        • University of Turku and Turku University Hospital
        • Contact:
        • Principal Investigator:
          • Jorma Toppari, MD

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Since November 1994 the Finnish Type 1 Diabetes Prediction and Prevention (DIPP) Study has screened 206,707 newborns for HLA-conferred genetic susceptibility for T1D (Figure 1., data as of March 2015). A total of 16,193 children have started clinical follow-up with regular study visits and systematic collection of longitudinal blood and stool samples. Altogether more than 1000 children have seroconverted to positivity for multiple islet autoantibodies (ICA included). A total of 461 children and adolescents have progressed to clinical T1D with DIPP follow-up from birth until diagnosis. Currently there are 7158 children between 3 months and 15 years of age taking part in the DIPP Study follow-up.

Description

Inclusion Criteria:

  • Newborn babies with HLA-conferred genetic susceptibility to type 1 diabetes born in three University Hospitals in Finland

Exclusion Criteria:

  • Newborn babies without HLA-conferred genetic susceptibility to type 1 diabetes

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Cohort
  • Time Perspectives: Prospective

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Children at HLA-conferred risk for T1D
Other: No intervention. DIPP is an observational study.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Positivity for at least one islet autoantibody
Time Frame: December 31, 2021
ICA, IAA, GADA, IA-2A or ZnT8A
December 31, 2021
Clinical diagnosis of type 1 diabetes
Time Frame: December 31, 2021
Hyperglycemia as defined by WHO
December 31, 2021

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Riitta Veijola

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Turku University Hospital
Juvenile Diabetes Research Foundation
University of Turku
Oulu University Hospital
Tampere University
Tampere University Hospital
The Leona M. and Harry B. Helmsley Charitable Trust

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Riitta Veijola, MD PhD, University of Oulu, Oulu University Hospital
  • Principal Investigator: Mikael Knip, MD PhD, University of Helsinki, Tampere University Hospital
  • Principal Investigator: Jorma Toppari, MD PhD, University of Turku, Turku University Hospital
  • Principal Investigator: Kalle Kurppa, MD PhD, Tampere University
  • Principal Investigator: Heikki Hyöty, MD PhD, Tampere University
  • Principal Investigator: Johanna Lempainen, MD PhD, University of Turku

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
November 7, 1994

Primary Completion (Anticipated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 31, 2024

Study Completion (Anticipated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 31, 2024

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
August 30, 2017

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 30, 2017

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
August 31, 2017

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
April 7, 2023

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 6, 2023

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
April 1, 2023

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 1-SRA-2016-342-M-R

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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