Cockayne syndrome

Cockayne syndrome is a rare disorder characterized by short stature and an appearance of premature aging.include a failure to gain weight and grow at the expected rate,abnormally small head size and weakened development of the nervous system.unlike other DNA repair diseases Cockayne syndrome is not linked to cancer. after exposed to sunlight people with Cockayne syndrome can't preform transcription-coupled repair. witch means that they cant repair part of there DNA.