Research Information System
CLINICAL EEG AND NEUROSCIENCE, vol.44, no.1, pp.58-61, 2013 (Journal Indexed in SCI)
We present the electroclinical features and cytogenetic findings of 2 siblings with the ring 20 chromosome (r(20)) phenotype, one of which had r(20) mosaicism. A history of epilepsy or learning problems should be determined in family members, although these relatives had no ring formation in chromosome 20. Whether the clinical features result from possible deletions or ring formation is discussed.