Fonseca E, Varas R, Godoy-Santín J, Valenzuela R, Sandoval P. Opsoclonus-myoclonus syndrome associated with anti
Kelch-like protein-11 antibodies in a young female patient without cancer.
J Neuroimmunol 2021;
355:577570. [PMID:
33862421 DOI:
10.1016/j.jneuroim.2021.577570]
[Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 04/04/2021] [Accepted: 04/04/2021] [Indexed: 11/27/2022]
Abstract
Opsoclonus-myoclonus syndrome (OMS) is a rare neurological disorder. The pathogenesis is thought to be immune-mediated. In adults, it may be idiopathic or paraneoplastic in origin. However, most cases of paraneoplastic OMS in adults are not associated with well-characterized antibodies, except for a small subgroup who have anti-Ri antibodies. Herein, we provide the first detailed description of a case of OMS associated with a Kelch-like protein-11 antibody, a newly discovered biomarker for paraneoplastic neurological syndromes associated with germ-cell tumors. This was a young female patient in whom no tumor was ever detected and who had an excellent response to rituximab.
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