Robin sequence-oligodactyly syndrome (MONDO_0008247) is a rare, genetic, developmental defect during embryogenesis syndrome characterized by Robin sequence (i.e. severe micrognathia, retroglossia and U-shaped cleft of the posterior palate) associated with pre- and postaxial oligodactyly. Facial features can include a narrow face and narrow lower dental arch. Clinodactyly, absent phalanx, metacarpal fusions, and hypoplastic carpals have also been reported. There have been no further descriptions in the literature since 1986. Also known as: Pierre Robin sequence-oligodactyly syndrome.