Paternal Transmission of Subcortical Band Heterotopia Through DCX Somatic Mosaicism.

Subcortical band heterotopia (SBH), also known as 'double cortex' syndrome, is characterized by a band of heterotopic neurons interspersed in the white matter between the cortex and the lateral ventricles and is usually a severe disease with patients showing variable degrees of developmental delay, intellectual disability, motor impairment and epilepsy [1].