Silver-Russell Syndrome Due to Maternal Uniparental Disomy of Chromosome 7, also known as upd(7)mat, is related to silver-russell syndrome 1 and diencephalic syndrome. An important gene associated with Silver-Russell Syndrome Due to Maternal Uniparental Disomy of Chromosome 7 is GRB10 (Growth Factor Receptor Bound Protein 10). Affiliated tissues include eye and kidney, and related phenotypes are delayed skeletal maturation and intrauterine growth retardation