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Background
Stiff Person Syndrome (SPS), a rare immune‐mediated neuromuscular disorder, is characterized by rigidity, stiffness, and intermittent spasms of axial and extremity muscles. Various immunotherapies including intravenous immunoglobulin (IVIG) have been used for this autoimmune condition. Here we aim to review the role of IVIG in the treatment of SPS along with its outcome.
Methods
A systematic literature search of PubMed and Embase was conducted to identify the relevant published articles against the predefined criteria using suitable keywords combinations till September 20, 2021. Data were extracted to produce descriptive information of SPS patients on demographics, diagnostics, treatment with IVIG, and outcome.
Results
Twelve studies with 216 patients were included in the review and 63.89% of them had classical SPS. Glutamic acid decarboxylase (GAD) autoantibodies were present in 72.68% of the patients and 57.89% in whom electromyography (EMG) was performed had continuous motor activity. IVIG therapy was given to 95 patients in different regimens in various studies and varying scoring systems were used to assess the outcome, and 83.16% showed some form of improvement, 14.74% showed no improvement, while 2.10% worsened. None of the included studies mentioned an adverse effect of IVIG in the patients.
Conclusion
IVIG may benefit patients with SPS along with other medications. Owing to the rarity of the disease and insufficient studies on the assessment of immunotherapy in SPS, longitudinal studies with a sizable number of patients are required to clarify clinical course, treatment, and outcome in SPS with the use of IVIG.