The holoprosencephaly (HPE) is the most frequent of the craniofacial malformations described in literature. Several genes have already been identified as responsible for this kind of anomaly, among them, the Sonic Hedgehog (SHH), ZIC2, SIX3 and TGIF. The aim of this study was to evaluate the neuropsycholinguistic abilities of an individual with the HPE and mutation of the SHH gene, presenting phenotypic characteristics of the Like type. The results evidenced that, in spite of the lightness of the degree of HPE (Like phenopype), the patient showed significant loss of the linguistic abilities, although the cognitive aspects were adequate. The magnetic resonance of the encephalon revealed hypoplasia of the anterior commissure and presence of a temporal cyst on the left side, findings apparently not related to the clinic symptomatology.
Holoprosencephaly; Cognition; Speech; Psycholinguistics; Mutation
