hereditary disease growth retardation, intellectual developmental disorder, hypotonia, and hepatopathy Hannah McLaren Growth retardation, intellectual developmental disorder, hypotonia, and hepatopathy (GRIDHH) is an autosomal recessive multisystem disorder characterized by intellectual disability, poor overall growth, hypotonia, and variable liver dysfunction. Additional features, such as seizures and hearing loss, may also be present (summary by Kopajtich et al., 2016). UMLS:C4310720 MONDO:0014911 OMIM:617093 GRIDHH