Genetic in puberphonia voice

A new break through in puberphonia.
Our treatment is not by surgery!
Is speech impairment genetic in puberphonia?
Genetics of speech and language disorders. ... Most communication disorders are prominent in puberphonia, where they are common. A number of these disorders have been shown to cluster in families, suggesting that genetic factors are involved, but their etiology at the molecular level is not well understood.
After the first instance of treatment of puberphonia their voice is similar to their father.