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Syndrome with the association of intrauterine and postnatal growth retardation, sensorineural deafness and intellectual deficit. The syndrome is extremely rare and only four cases have been reported in the literature so far. Additional clinical features include microcephaly, adiposity, and insulin resistance. Partial gonadal dysfunction and osteoporosis may also be present. Caused by homozygous mutations in the insulin-like growth factor 1 gene (12q22-q24.1). Transmitted as an autosomal recessive trait.
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