Propylthiouracil-induced vasculitis associated with ANCA: a case report

Area of Science:

• Nephrology
• Endocrinology
• Immunology

Background:

• Propylthiouracil (PTU) is a long-standing treatment for hyperthyroidism.
• Adverse effects of PTU occur in 1-5% of patients.
• Renal complications, though rare, include glomerulonephritis and vasculitis.

Observation:

• This report details a patient experiencing rapidly progressive glomerulonephritis (RPGN).
• The patient's condition was associated with positive antineutrophil cytoplasmic autoantibodies (ANCA).
• The RPGN developed during treatment with propylthiouracil.

Findings:

• Propylthiouracil treatment was linked to ANCA-positive RPGN.
• This case adds to the rare but serious renal complications of PTU.
• The specific mechanism linking PTU to ANCA and RPGN warrants further investigation.

Implications:

• Clinicians should be aware of the potential for PTU-induced ANCA-associated vasculitis and glomerulonephritis.
• Early recognition and management of renal complications are crucial for patients on PTU.
• This case underscores the importance of monitoring renal function in patients receiving long-term PTU therapy.