Cleft Palate Repair and Velopharyngeal Insufficiency

If one first-or second-degree relative (parent or sibling) has a cleft, then 4% likelihood.

If two first-or second-degree relatives (parent and sibling) have clefts, then 17% likelihood.

4. Unilateral cleft lip and palate: most frequent combination; predominantly on left side; more common in boys than girls.