syndromic disease congenital nervous system disorder subcortical band heterotopia https://rarediseases.info.nih.gov/diseases/2250/familial-band-heterotopia icd11.foundation:525786944 NCIT:C116933 Double cortex A developmental brain abnormality characterized by atypical migration of neurons during cortical development. familial band heterotopia Orphanet:99796 UMLS:C1848201 GARD:0001904 MEDGEN:336288 subcortical laminar heterotopia MONDO:0020491 DOID:0111169 double cortex syndrome Editor note: check this hierarchy NANDO:1201070