Thyroid autoimmunity and ophthalmopathy related to melanoma biological therapy
- PMID: 21088057
- PMCID: PMC4080629
- DOI: 10.1530/EJE-10-0833
Thyroid autoimmunity and ophthalmopathy related to melanoma biological therapy
Abstract
Objective: Ipilimumab is a fully human MAB against cytotoxic T-lymphocyte antigen 4 (CTLA4). CTLA4 negatively regulates immune cell activation. In patients with metastatic melanoma, ipilimumab increases survival time and induces complete remission in some patients. However, immune-related adverse events including endocrinopathies have been reported. Bevacizumab, an angiogenesis inhibitor, has been used in combination with ipilimumab in patients with advanced melanoma.
Patients and methods: In this study, we report three patients who received ipilimumab alone or combined with bevacizumab therapy and developed thyroiditis, and the first report of euthyroid Graves' ophthalmopathy.
Results: Case 1 is a 51-year-old female who presented with severe eye pain, proptosis, and periorbital edema. Laboratory results revealed normal TSH, elevated thyroid antibodies but low titer of anti-TSH receptor antibody. Imaging was consistent with Graves' ophthalmopathy. Cases 2 and 3 were referred for hyperthyroidism, and workup revealed thyroiditis. These three cases suggest that patients with advanced melanoma treated with ipilimumab +/- bevacizumab may be susceptible to a variety of thyroid disorders.
Conclusions: Anti-CTLA4 therapy has shown promising results in treating advanced malignancy such as melanoma and renal carcinoma. A number of endocrinopathies, including thyroid disorders, may develop during ipilimumab therapy. The association of bevacizumab with endocrinopathies is not clear, although a few reports suggest a link to hypothyroidism. All patients on ipilimumab and/or bevacizumab therapy should be monitored for signs or symptoms of thyroiditis.
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