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Teprotumumab treatment for a fourth relapse of thyroid eye disease Satoshi Noguchi 1 , Sachi Nishino 1 , Yuki Nishi 1 , Osamu Sawada 1 , Kimihiro Nishimura 2 , Shogo Ida 2 , Natsuko Ohashi 2 , Shinji Kume 2 1Department of Ophthalmology, Shiga University of Medical Science 2Division of Diabetes, Endocrinology & Nephrology, Department of Medicine, Shiga University of Medical Science pp.461-467
Published Date 2026/4/15
DOI https://doi.org/10.11477/mf.037055790800040461
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Abstract Purpose:To report a case of recurrent active thyroid eye disease(TED) treated with teprotumumab, in which improvement of proptosis and diplopia was achieved.

Case:A woman in her 70s with TED had a history of three courses of intravenous steroid pulse therapy and one course of orbital radiation. On January of year X, she presented with left ocular pain and diplopia in the primary gaze position, although she had continued oral prednisolone treatment after her last acute episode. TED recurrence was confirmed with worsening Clinical Activity Score(CAS) of 5. Although oral corticosteroid dosage was increased, her symptoms did not improve. As her past cumulative steroid dosage exceeded 20 grams, continuing conventional therapy was not considered adequate. Therefore, teprotumumab treatment was initiated.

Results:After completing eight courses of teprotumumab, CAS improved to 1, and proptosis decreased by 4 mm in the left eye and by 3 mm in the right eye. The Hess red-green test demonstrated a reduction in the range of diplopia and resolution of diplopia in the primary gaze position. Although high signal intensity of the extraocular muscles persisted on MRI, clinical symptoms showed evident improvement.

Conclusion:Teprotumumab demonstrated high efficacy in improving proptosis and diplopia in cases of recurrent active TED, representing a promising therapeutic option for patients for whom long-term corticosteroid therapy is not adequate.


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電子版ISSN 1882-1308 印刷版ISSN 0370-5579 医学書院

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