<unk>  is a group of rare genetic disorders affecting humans and domestic animals caused by a defect in collagen synthesis. Depending on the individual mutation, the severity of the disease can vary from mild to life-threatening.  There is no known cure. Treatment is supportive.
Ehlers-Danlos syndrome
Ehlers–Danlos syndrome
Ataxia telangiectasia
Klein-Levin syndrome
Singleton-Merten syndrome
Kearns-Sayer syndrome
Senior-Løken syndrome
Bernard-Soulier syndrome