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  • Title: Striational antibodies in a paraneoplastic context.
    Author: McKeon A, Lennon VA, LaChance DH, Klein CJ, Pittock SJ.
    Journal: Muscle Nerve; 2013 Apr; 47(4):585-7. PubMed ID: 23463255.
    Abstract:
    INTRODUCTION: The clinical significance of striational antibodies (StrAbs) detected in the course of paraneoplastic antibody testing is unknown. METHODS: We compared all 203 striational antibody (StrAb)-seropositive patients identified (2004-2005) during evaluation for paraneoplastic antibodies with age- and sex-matched seronegative controls. RESULTS: Thymoma and myasthenia gravis (MG) were significantly more common among cases (P<0.0001). Cancers more rarely detected after StrAb detection were adenocarcinoma in 5 patients and sarcoma in 3 patients. All patients who had a cancer identified after StrAb testing had a titer of ≥ 1:7680 or a coexisting muscle AChR-binding antibody. Autoimmune disorders more commonly observed among cases (with any StrAb value) included: hypothyroidism; rheumatoid arthritis; and pernicious anemia (all P<0.05). CONCLUSIONS: StrAbs may serve as a diagnostic clue for an autoimmune diagnosis. There is a low likelihood of oncological significance in patients with StrAb titers <1:7680 without coexisting paraneoplastic Abs.
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