Clinical Report: Autoimmune Nodopathy in Sjögren’s Disease and Nephrotic Syndrome
Overview
This report presents a rare case of autoimmune nodopathy (AN) coexisting with Sjögren’s disease and nephrotic syndrome, highlighting the immunological links and diagnostic clues. The patient exhibited significant neurological symptoms and responded well to intravenous methylprednisolone therapy.
Background
Autoimmune nodopathy is characterized by autoantibodies targeting nodal and paranodal proteins, often leading to peripheral neuropathies. Sjögren’s disease, a systemic autoimmune disorder, can involve multiple organ systems, including the kidneys, making the understanding of its comorbidities crucial for effective management. The intersection of AN, Sjögren’s disease, and nephrotic syndrome is particularly rare and underscores the need for heightened clinical awareness.
Data Highlights
No numerical data available in the article.
Key Findings
Anti-CNTN1 antibody positivity was confirmed in the patient, indicating a link to autoimmune nodopathy.
The patient presented with significant neurological symptoms, including progressive limb weakness and numbness.
Nephrotic-range proteinuria was observed, highlighting renal involvement in the context of Sjögren’s disease.
Key diagnostic clues for AN include massive proteinuria, postural tremor, and poor response to intravenous immunoglobulin.
Intravenous methylprednisolone therapy resulted in significant improvement of neurological symptoms.
Clinical Implications
Clinicians should be vigilant for signs of autoimmune nodopathy in patients with Sjögren’s disease and nephrotic syndrome, particularly when neurological symptoms are present. Early identification and treatment may improve patient outcomes and prevent further complications.
Conclusion
This case emphasizes the importance of recognizing the rare coexistence of autoimmune nodopathy with Sjögren’s disease and nephrotic syndrome, as well as the potential for effective treatment with immunotherapy.
