growth retardation, intellectual developmental disorder, hypotonia, and hepatopathy
Findings
No curated finding names growth retardation, intellectual developmental disorder, hypotonia, and hepatopathy yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
A rare, genetic, syndromic intellectual disability disease characterized by severe intrauterine and post-natal growth delay, moderate to severe intellectual disability, and neonatal-onset hepatopathy with fibrosis, steatosis, and/or cholestasis, occasionally leading to liver failure. Additional variable manifestations include muscular hypotonia, zinc deficiency, recurrent infections, diabetes mellitus, joint contractures, skin and joint laxity, hypervitaminosis D, and sensorineural hearing loss.
Definition from the Mondo Disease Ontology (MONDO:0014911), read 2026-09-29. CC BY 4.0.
- Inheritance
- Autosomal recessive inheritance
- Onset and course
- Antenatal onset · Second trimester onset
HPO, annotations 2026-09-02
Features
51 features
What the disease is reported to present with, and how often among people who have it — never how often a feature means the disease. HPO, annotations 2026-09-02.
- Conjugated hyperbilirubinemiaHPOHP:0002908
- 1 of 1 reported patient
- Decreased serum zincHPOHP:0031831
- 3 of 3 reported patients
- Very frequent (80% to 99% of cases)
- Duplicated collecting systemHPOHP:0000081
- 1 of 1 reported patient
- Occasional (5% to 29% of cases)
- Elevated circulating alkaline phosphatase concentrationHPOHP:0003155
- 1 of 1 reported patient
- Elevated gamma-glutamyltransferase levelHPOHP:0030948
- 1 of 1 reported patient
Genes
1 gene
Germline variants in the gene encoding each protein, as classified by GenCC submitters, each in their own words. Limited, disputed and refuted submissions are listed too.
- IARS1HGNC:5330
- Strong · Labcorp Genetics (formerly Invitae) · Autosomal recessive · 2021
- Strong · G2P · Autosomal recessive · 2025
- Strong · PanelApp Australia · Autosomal recessive · 2025
- Supportive · Orphanet · Autosomal recessive · 2021
Where it sits
Other names
3 names
Resolves to: growth retardation, intellectual developmental disorder, hypotonia, and hepatopathy
- Also called
- GRIDHHgrowth retardation, impaired intellectual development, hypotonia, and hepatopathygrowth retardation, intellectual developmental disorder, hypotonia, and hepatopathy; GRIDHH