Larsen Syndrome is a rare congenital disorder that occurs every 1 in 100,000 people. LS is caused by a mutated gene known as the Filamin B gene, which regulates communications between the cell membrane and cytoskeletal network.

Symptoms include facial abnormalities, foot deformities, joint dislocations, stunted growth, heart defects, cleft palates, hairing problems and mental retardation.