Synonyms: Subcortical laminar heterotopia
A rare non-syndromic cerebral malformation due to abnormal neuronal migration characterized by variable clinical manifestation depending on the location size and thickness of subcortical bands. Clinical presentation ranges from mild cognitive deficit to developmental delay with severe intellectual disability seizures and behavioral problems.
Data from Orphanet are used to provide information on a disease's name, synonym(s), and overview. Reference: Access aggregated data from Orphanet at Orphadata. Orphadata: Free access data from Orphanet. © INSERM 1999. Available on http://www.orphadata.org. Data version April 2026
Newly diagnosed with
Subcortical band heterotopia?
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Advocacy Organizations
Genetic Epilepsy Team Australia
Collaboration of research and care
PVNH Support & Awareness
PVNH Support & Awareness connects families together, advocates and educates patients, family members and medical professionals about Periventricular Nodular Heterotopia and other forms of neuronal heterotopia disorders. Our mission is to positively impact the outcome of affected patients’ lives.
Rare Epilepsy Network (REN)
Improving outcomes of people with rare epilepsies through an innovative collaborative infrastructure that drives urgent, patient-centered research, educaiton and advocacy.
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Clinical Trials
For a list of clinical trials in this disease area, please click here.