<s>[INST] <<SYS>> This is a medical question of type : inheritance <</SYS>> Is Townes-Brocks syndrome inherited ? [/INST] Is Townes-Brocks syndrome genetic? Yes. Townes-Brocks syndrome is inherited in an autosomal dominant fashion, which means that one copy of the altered gene in each cell is sufficient to cause the disorder. In about 50% of cases, an affected person inherits the mutation from an affected parent. The other 50% have the condition as a result of a new (de novo) mutation. </s>