Comparative Study
Journal Article
Research Support, Non-U.S. Gov't
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Paraneoplastic antibodies coexist and predict cancer, not neurological syndrome.

Annals of Neurology 2004 November
We investigated coexisting autoantibodies in sera of 553 patients with a neurological presentation and one or more paraneoplastic neuronal nuclear or cytoplasmic autoantibodies: antineuronal nuclear autoantibody type 1 (ANNA-1), ANNA-2, ANNA-3; Purkinje cell cytoplasmic autoantibody type 1 (PCA-1), PCA-2; and CRMP-5-immunoglobulin G or amphiphysin-immunoglobulin G. Except for PCA-1, which occurred alone, 31% of sera had more than one of these autoantibodies. In addition, 25% of sera had neuronal calcium channel (P/Q-type or N-type), potassium channel, ganglionic acetylcholine receptor, muscle acetylcholine receptor, or striational antibodies. The autoantibody profiles observed in patients with paraneoplastic disorders imply the targeting of multiple onconeural antigens and predict the patient's neoplasm, but not a specific neurological syndrome.

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