<unk>  is a rare autosomal recessive disorder that usually begins during the later stages of pregnancy.<unk>  is caused by a NSD1 deletion, which encodes for methyltransferase involved with chromatin regulation. The exact mechanism as to how the chromatin is changed is unknown and still being studied.<unk>  is an example of one of about twelve overgrowth syndromes known today. Overgrowth syndromes are characterized with children experiencing a significant overgrowth during pregnancy and also excessive postnatal growth. Studies concerning<unk>  have shown a similar relation to Ehlers-Danlos syndrome, a connective tissue disorder.<unk>  is associated with kyphosis, an abnormal increased forward rounding of the spine, joint laxity, postpartum overgrowth, a highly arched palate, undescended testes in males, low-set ears, increased head circumference, among other symptoms.
Nevo syndrome
Michels Caskey syndrome
SAHA syndrome
Bogart–Bacall syndrome
Crome syndrome
Rudiger syndrome
Rabbit syndrome
AIDS-related complex