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  • Title: Survival and outcome in 73 anti-Hu positive patients with paraneoplastic encephalomyelitis/sensory neuronopathy.
    Author: Sillevis Smitt P, Grefkens J, de Leeuw B, van den Bent M, van Putten W, Hooijkaas H, Vecht C.
    Journal: J Neurol; 2002 Jun; 249(6):745-53. PubMed ID: 12111309.
    Abstract:
    In a retrospective study, we determined clinical and serological findings, associated tumours, outcome and prognostic factors in 73 Hu-Ab positive patients detected in a Dutch reference laboratory. The most frequent signs and symptoms at presentation were sensory neuropathy (55 %), cerebellar degeneration (22 %), limbic encephalitis (15 %) and brainstem encephalitis (16 %). 23 % developed autonomic dysfunction including gastro-intestinal motility disorders in 14 %. In 85 % a tumour was detected, which was a lung tumour in 77 %. Signs, symptoms and associated tumours did not differ in six patients with additional neuronal antibodies (anti-amphiphysine, anti-CV2, anti-Ri). The overall 3 months, one-year and three-year survival rates from the time of diagnosis were 64 %, 40 % and 22 %. Rankin Scale Score (RS) at diagnosis and presence of tumour at the time of diagnosis predicted mortality with hazard ratios (95 % CI) of 2.6 (1.5-4.6) and 1.5 (1.1-2). The median delay between onset of symptoms and Hu-Ab diagnosis was 4 months. There was a negative association between delay RS at diagnosis (P=0.03). In a logistic regression analysis, only older age (OR=0.15; 0.02-0.63) and a higher RS at diagnosis (OR=0.29; 0.11-0.73) were associated with a lower probability of successful functional outcome. Adjusted for these factors, antitumour therapy showed a higher but statistically not significant probability of successful outcome (OR=3.5; 0.87-14.3). Our study underlines the importance of early diagnosis and start of antitumour treatment when the patient is still in a better functional state. The delay between onset of symptoms and diagnosis of PEM/SN suggests a window for improving outcome in these patients.
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