Lissencephaly syndrome, Norman-Roberts type is characterized by the association of lissencephaly type I with craniofacial anomalies (severe microcephaly, a low sloping forehead, a broad and prominent nasal bridge and widely set eyes) and postnatal growth retardation. The disease is Norman-Roberts syndrome (Monarch Disease Ontology entry MONDO_0009760). Also known as: Microlissencephaly type A, lissencephaly 2, lissencephaly 2 (Norman-Roberts type), lissencephaly syndrome, Norman-Roberts type.