Alternative definition : NICHD: Growth hormone insensitivity/resistance caused by loss-of-function mutation(s)
in the IGF1 gene, encoding insulin-like growth factor I (IGF-I). This condition is
characterized by severe prenatal and/or postnatal growth failure, sensorineural deafness,
neurocognitive deficiencies, and elevated GH concentrations accompanied by low IGF-I
concentrations.;