<unk>  (also called atrio-digital syndrome, atriodigital dysplasia, cardiac-limb syndrome, heart-hand syndrome type 1, HOS, ventriculo-radial syndrome) is an autosomal dominant disorder that affects bones in the arms and hands (the upper limbs) and often causes heart problems. The syndrome may include an absent radial bone in the forearm, an atrial septal defect in the heart, or heart block. It affects approximately 1 in 100,000 people.
Holt–Oram syndrome
Smith–Magenis syndrome
Marshall–Smith syndrome
Laron syndrome
Hanhart syndrome
Ring chromosome 20 syndrome
Wilson–Turner syndrome
Turner syndrome