Distribution of orofacial clefts and frequent occurrence of an unusual cleft variant in the Rift Valley of Kenya.

Objective: To investigate the pattern and distribution of nonsyndromic orofacial clefts among patients in the Rift Valley region of northwestern Kenya.

Methods: Subjects were categorized anatomically for occurrence of an atypical cleft lip variant (ACL), typical cleft lip (CL), cleft lip and palate (CLP), or cleft palate (CP), and family history of orofacial clefts. Tribal ethnicity data were obtained from both cleft and noncleft clinic attendees.