Thyroid function in pediatric patients with juvenile idiopathic arthritis

Area of Science:

• Pediatric Rheumatology
• Endocrinology
• Immunology

Background:

• Juvenile Idiopathic Arthritis (JIA) is a chronic inflammatory condition in children.
• Limited data exist on associated autoimmune diseases in pediatric JIA patients.
• Thyroid dysfunction is a potential complication that warrants investigation.

Purpose of the Study:

• To evaluate thyroid function in Italian children diagnosed with JIA.
• To identify specific Autoimmune Thyroid Diseases (ATDs) associated with JIA in this cohort.
• To compare thyroid-related markers between different JIA subtypes.

Main Methods:

• Clinical evaluation of 51 JIA patients, including family and personal history.
• Assessment of thyroid function tests (thyroid hormones, TSH).
• Measurement of anti-thyroid antibodies (anti-TPO, anti-hTG) and antinuclear antibodies (ANA).

Main Results:

• The polyarticular JIA form showed a significantly higher prevalence of anti-TPO antibodies compared to the oligoarticular form (p=0.032).
• A significant prevalence of family history for Autoimmune Diseases (ADs) was observed in the polyarticular JIA group (p<0.05).
• No significant differences were found in gender prevalence, anti-hTG, or ANA between JIA subtypes.

Conclusions:

• Thyroid function assessment is crucial for children with JIA.
• The polyarticular JIA subtype presents a higher risk for thyroid function alterations.
• Specific attention and monitoring are recommended for polyarticular JIA patients due to increased risk of ATDs.