A clinico-radiological phenotype of voltage-gated potassium channel complex antibody-mediated disorder presenting with seizures and basal ganglia changes
Article first published online: 22 JUL 2012
© The Authors. Developmental Medicine & Child Neurology © 2012 Mac Keith Press
Developmental Medicine & Child Neurology
Volume 54, Issue 12, pages 1157–1159, December 2012
How to Cite
HACOHEN, Y., WRIGHT, S., SIDDIQUI, A., PANDYA, N., LIN, J.-P., VINCENT, A. and LIM, M. (2012), A clinico-radiological phenotype of voltage-gated potassium channel complex antibody-mediated disorder presenting with seizures and basal ganglia changes. Developmental Medicine & Child Neurology, 54: 1157–1159. doi: 10.1111/j.1469-8749.2012.04366.x
- Issue published online: 16 NOV 2012
- Article first published online: 22 JUL 2012
- PUBLICATION DATA Accepted for publication 6 May 2012. Published online 22nd July 2012.
In childhood, central nervous system (CNS) presentations associated with antibodies to voltage-gated potassium channel (VGKC) complex include limbic encephalitis, status epilepticus, epileptic encephalopathy, and autistic regression. We report the cases of two individuals (a 6-year-old male and an 11-year-old female) who presented with an acute-onset explosive seizure disorder with positive VGKC complex antibodies and bilateral basal ganglia changes on magnetic resonance imaging (MRI). Both patients made a complete clinical recovery, without immunotherapy, with resolution of the MRI changes and normalization of the antibody levels. Extended antibody testing, including testing for leucine-rich glioma-inactivated 1 (LGI1), contactin-associated protein 2, and contactin-2 was negative. This could suggest that the clinico-radiological phenotype in our patients may in fact be associated with a novel autoreactive target(s) within the VGKC complex, as may be the case in other children with VGKC complex-mediated CNS disorders.