What is the cause of progeria?

Most new mutations: Progeria is a self limited process with most recorded cases appearing as new mutations in families that have other normal children. There are rare sibships reported indicating an autosomal recessive form exists.Most don't survive their teens.

New genetic mutation: Progeria (Hutchinson–Gilford progeria syndrome (HGPS))is a genetic disorder, usually due to new mutations. It causes characteristics of early aging. There can be small stature, loss of hair, wrinkled skin,loss of vision, scleroderma, large head to body ratio, small & recessed jaw, pinched nose, dental problems, fragile bones, renal failure & cardiovascular problems that usually result in death.