De novo interstitial 3p21.31p14.2 duplication in a boy with esophageal atresia, talipes equinovarus, and global developmental delay: a case report
A boy with a de novo interstitial duplication of 3p21.31p14.31p14.2 is described, interpreted as likely pathogenic, which expands the spectrum of proximal 3p imbalances and illustrates the interpretive challenge of gene-rich copy-number gains lacking established triplosensitivity.