title: Tumor progression and serum anti-HuD antibody concentration in patients with paraneoplastic neurological syndromes.
abstract: The aim of this study was to investigate whether there are clues for a correlation between tumor progression and serum anti-Hu antibody concentration in patients with anti-Hu-associated paraneoplastic neurological syndromes (PNS). 19 patients with anti-Hu-associated PNS were assigned to three groups according to the course of tumor progression. Group 1 corresponds to patients with rapid tumor progression [n = 5; mean survival in months/standard deviation (SD); 24/10]; in group 2 patients with a favorable tumor prognosis were included (n = 7; mean/SD 79/25, 6 patients still alive); group 3 consisted of patients in whom tumor progression could not be assessed (n = 7; mean/SD 23/20). The anti-Hu antibody concentrations in sera were measured in a recombinant HuD-ELISA. In sera from patients of group 1 the anti-Hu antibody concentration was modest (mean OD 0.56, SD 0.08) whereas a significantly higher anti-Hu antibody concentration was detected in sera from patients with a favorable tumor prognosis (group 2, mean OD 1.86, SD 0.34). These results hint at a negative correlation between tumor progression and the anti-Hu antibody concentration in sera from patients with PNS. These findings confirm and extend previous reports of more indolent tumor growth in patients with an anti-Hu immune response.
authors.affiliation: Department of Neurology, Albert Ludwig University, Freiburg, Germany. rauer@nz11.ukl.uni-freiburg.de
authors.forename: Sebastian
authors.initials: S
authors.lastname: Rauer
authors.forename: Ioanna
authors.initials: I
authors.lastname: Andreou
mesh_terms: D000328:Adult; D000368:Aged; D000888:Antibodies, Anti-Idiotypic / Q000097:blood* / Q000276:immunology*; D018450:Disease Progression; D051959:ELAV Proteins; D000067779:ELAV-Like Protein 4; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D006801:Humans; D007074:Immunoglobulin G / Q000276:immunology; D008297:Male; D008875:Middle Aged; D009419:Nerve Tissue Proteins / Q000276:immunology*; D020361:Paraneoplastic Syndromes, Nervous System / Q000097:blood* / Q000276:immunology* / Q000628:therapy; D016601:RNA-Binding Proteins / Q000276:immunology*; D012189:Retrospective Studies
chemical_list: D000888:Antibodies, Anti-Idiotypic; D051959:ELAV Proteins; D000067779:ELAV-Like Protein 4; C498010:ELAVL4 protein, human; D007074:Immunoglobulin G; D009419:Nerve Tissue Proteins; D016601:RNA-Binding Proteins