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A rare genetic lethal multiple congenital anomalies/dysmorphic syndrome with characteristics of failure to thrive, severe developmental delay, severe postnatal microcephaly, frequent congenital cardiac defects and characteristic facial dysmorphism (including coarse face with anteverted nostrils, thin vermillion, prominent alveolar ridge and retro or micrognathia). Additional common features include neurologic abnormalities (hyper/hypotonia, sensorineural deafness, hydrocephalus, cerebral atrophy, seizures), as well as brachydactyly, cutis marmorata and genital anomalies. Caused by homozygous mutation in the FTO gene on chromosome 16q12.
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