Growth Retardation, Impaired Intellectual Development, Hypotonia, and Hepatopathy, is also known as growth retardation, intellectual developmental disorder, hypotonia, and hepatopathy. An important gene associated with Growth Retardation, Impaired Intellectual Development, Hypotonia, and Hepatopathy is IARS1 (Isoleucyl-TRNA Synthetase 1). Affiliated tissues include liver and skin, and related phenotypes are intellectual disability and global developmental delay