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- W2890000215 abstract "11559 Background: Paraneoplastic neurologic disease (PND) is an aberrant immune-mediated response against the nervous system triggered by occult malignancy. Given the rarity of this disease, a paucity of data exists describing breast cancer (BC)-related PND; thus, we sought to further examine this specific population of patients. Methods: Using an institution specific clinical search tool, we identified all patients at our institution from 1997-2016 with a diagnosis of BC-related PND, verified by an international expert. Retrospective review was used to record tumor and treatment factors associated with PND and BC. A descriptive analysis was performed of the characteristics associated with BC-related PND. Results: BC-related PND was diagnosed in 58 female patients. Average age at BC diagnosis was 54.0±10.3 years. Most had invasive cancer of Stage II or higher [Stage 0 (10.3%), I (10.3%), II (44.8%), III (13.8%), IV (6.9%), unknown (13.8%)]. Most patients were hormone receptor (HR)+ (63.8%), while 4 (6.9%) were HR-, and 17 (29.3%) were unknown. Of the 34 patients where Her2/neu (Her2) data was available, 7 (20.6%) were Her2+ and 27 (79.4%) were Her2-. The majority (62.1%) had neurological symptoms prior to BC, 5.2% were concurrent, and 32.7% developed PND after initial BC. The interquartile range for time from PND to BC diagnosis was -8.5 to 10.5 months. Of the 58 patients, 29 (50%) had autoantibodies detected: Purkinje Cell Cytoplasmic Autoantibody Type-1 (PCA-1[anti-Yo]) (10), amphiphysin-IgG (n = 9), Anti-Neuronal Nuclear Autoantibody Type-2 (ANNA-2[anti-Ri]) (n = 5), and other (n = 5). The most common syndromes were cerebellar ataxia (n = 14), myelopathy (n = 11), and myopathy (n = 11). Immunotherapy was used for PND in 53 of 58 (91.4%) patients; benefit from immunotherapy was assessed as complete 0 (0%), robust 11 (20.8%), mild to moderate 28 (52.8%), none 9 (17%), and indeterminate 5 (9.4%). Conclusions: BC-related PND is rare, with only 58 cases over 20 years at a large academic institution. Paraneoplastic symptoms often present prior to BC diagnosis and BC characteristics are typical of the general population. Over 75% of patients benefit from immunotherapy. These data may provide helpful information to providers treating this population of patients." @default.
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- W2890000215 date "2017-05-20" @default.
- W2890000215 modified "2023-09-25" @default.
- W2890000215 title "Breast cancer-related paraneoplastic neurologic disease." @default.
- W2890000215 doi "https://doi.org/10.1200/jco.2017.35.15_suppl.11559" @default.
- W2890000215 hasPublicationYear "2017" @default.
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