| Inherited disorder characterized by episodes of metabolic crisis and acute encephalopathy. Life-threatening episodes manifest with poor feeding, vomiting, weight loss, lethargy, tachypnea, seizures or coma and are caused by hyperammonemia, metabolic acidosis, respiratory alkalosis, hypoglycemia and reduced production of bicarbonate in the liver. Caused by mutations in the CA5A gene resulting in absent or impaired carbonic anhydrase VA enzyme function leading to reduced bicarbonate production. Inherited in an autosomal recessive pattern. |