A Small Pure 3q25.1 Duplication Associated with Multiple Cerebral Organizational Defects

Abstract

Duplications of the long arm of chromosome 3 most frequently occur in the context of other chromosomal copy number variations. Pure duplications of this region are exceedingly rare, varying widely in size and clinical presentation. Presented below is a case of a small pure duplication of the long arm of chromosome 3q25.1 associated with marked cerebral organization defects and the possible genotype/phenotype correlation between the two.