A rare syndrome with characteristics of facial dysmorphism, intellectual deficit and costovertebral abnormalities. To date, 13 cases have been reported in the literature. Dysmorphic features include brachycephaly, hypertelorism, broad nasal bridge, large philtrum, triangular-shaped mouth and micrognathia. There is often synophrys and a low hairline on the back. Costovertebral abnormalities are always present: short, bifid or fused ribs, bony bridges joining the posterior arches in some ribs, hemi vertebrae. Intellectual deficit is constant but the severity varies and patients also have cerebral abnormalities: cortical atrophy, hypoplasia of the corpus callosum and cerebellar vermis.