RGD uses the Human Disease Ontology (DO, https://disease-ontology.org/) for disease curation across species. RGD automatically downloads each new release of the ontology on a monthly basis. Some additional terms which are required for RGD's curation purposes but are not currently covered in the official version of DO have been added. As corresponding terms are added to DO, these custom terms are retired and the DO terms substituted in existing annotations and subsequently used for curation.
Term:
CARBONIC ANHYDRASE VA DEFICIENCY, HYPERAMMONEMIA DUE TO
Carbonic anhydrase VA deficiency (CA5AD) is an autosomal recessive inborn error of metabolism characterized clinically by acute onset of encephalopathy in infancy or early childhood. Biochemical evaluation shows multiple metabolic abnormalities, including metabolic acidosis and respiratory alkalosis. Other abnormalities include hypoglycemia, increased serum lactate and alanine, and evidence of impaired provision of bicarbonate to essential mitochondrial enzymes. Apart from episodic acute events in early childhood, the disorder shows a relatively benign course. Treatment with carglumic acid can result in neurologic improvement. CA5AD is caused by homozygous mutation in the CA5A gene on chromosome 16q24. (OMIM)