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EnglishThe association between hereditary myotonic disorders and epilepsy is seldom described in the literature. To date, few reports have dealt with dystrophic myotonias, whereas a single case demonstrating an association between sporadic congenital myotonia and epilepsy was recently reported in a patient carrying a de novo mutation of the CLCN1 gene. Additional evidence for a role of CLCN1 in the pathogenesis of epilepsy is derived from large-scale exome analysis of ion channel variants and expression studies. Here, we describe the first case of association between familial Thomsen myotonia and epilepsy. All the affected members of a two-generation family presented myotonia and disclosed a pathogenic mutation in CLCN1. In addition, one individual experienced epileptic seizures due to limbic encephalitis (LE) with anti-GAD antibodies. The occurrence of the two diseases in this patient could be a chance association, however, CLCN1 mutation, as a susceptibility factor for epilepsy through dysfunction of GABAA inhibitory signalling, cannot be ruled out as a possible influence.
| Titolo: | Limbic encephalitis with anti-GAD antibodies and Thomsen myotonia: A casual or causal association? | |
| Autore/i: | LICCHETTA, LAURA; BISULLI, FRANCESCA; Naldi, I.; Mainieri, G.; TINUPER, PAOLO | |
| Autore/i Unibo: | ||
| Anno: | 2014 | |
| Rivista: | ||
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1684/epd.2014.0668 | |
| Abstract: | The association between hereditary myotonic disorders and epilepsy is seldom described in the literature. To date, few reports have dealt with dystrophic myotonias, whereas a single case demonstrating an association between sporadic congenital myotonia and epilepsy was recently reported in a patient carrying a de novo mutation of the CLCN1 gene. Additional evidence for a role of CLCN1 in the pathogenesis of epilepsy is derived from large-scale exome analysis of ion channel variants and expression studies. Here, we describe the first case of association between familial Thomsen myotonia and epilepsy. All the affected members of a two-generation family presented myotonia and disclosed a pathogenic mutation in CLCN1. In addition, one individual experienced epileptic seizures due to limbic encephalitis (LE) with anti-GAD antibodies. The occurrence of the two diseases in this patient could be a chance association, however, CLCN1 mutation, as a susceptibility factor for epilepsy through dysfunction of GABAA inhibitory signalling, cannot be ruled out as a possible influence. | |
| Data stato definitivo: | 2015-09-16T10:19:06Z | |
| Appare nelle tipologie: | 1.01 Articolo in rivista |
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