Apert syndrome features include craniosynostosis, midface hypoplasia, and soft tissue and bony syndactyly of fingers and toes. Less common findings include rhizomelic shortening, fused cervical vertebrae, hydrocephalus, and cardiac or gastrointestinal defects. Approximately 50% of individuals have varying degrees of developmental delay/intellectual disability. This laboratory performs Sanger sequencing of exon 2 of the FGFR2 gene.