Type 1 diabetes and associated autoimmune diseases

Area of Science:

• Endocrinology
• Immunology
• Genetics

Background:

• Autoimmune diseases (AID) frequently co-occur in individuals and families.
• Type 1 diabetes (T1D) results from autoimmune pancreatic damage and is associated with other AID.

Purpose of the Study:

• To compare demographic, clinical, and serological characteristics of patients with isolated T1D versus those with T1D and co-occurring AID.
• To investigate differences in disease presentation and autoantibody prevalence between these groups.

Main Methods:

• Evaluation of 665 patients with T1D and their first-degree relatives from October 1999 to February 2020.
• Comparative analysis of clinical and serological data.

Main Results:

• Patients with T1D and associated AID were older, had a higher female-to-male ratio, and presented with later disease onset compared to isolated T1D.
• The time to onset for a second glandular AID was shorter than for non-endocrine AID after T1D diagnosis.
• T1D autoantibodies were more frequent in T1D + AID patients and their relatives; however, relatives of T1D-only patients showed higher prevalence of AID and autoantibodies.

Conclusions:

• Annual screening for AID is recommended for patients with T1D and their first-degree relatives.
• Early detection and monitoring of associated conditions can improve patient outcomes.