IRF6 Sequencing in Interrupted Clefting.

In a retrospective review of patients seen at the University of Alabama at Birmingham Cleft and Craniofacial Center, four patients with rare interrupted clefting were identified who had undergone genetic testing. Each of these patients had a typical cleft lip, with intact hard palate and cleft of the soft palate. Given this picture of mixed clefting, IRF6 sequencing was done and was negative for mutations in all four patients. As genetic testing for single-gene mutations and exome sequencing become clinically available, it may be possible to identify novel mutations responsible for this previously unreported type of interrupted clefting.