Liver disease in Navajo neuropathy

Area of Science:

• Pediatric Neurology
• Hepatology
• Genetic Disorders

Background:

• Navajo neuropathy (NN) is a rare neurological condition affecting children.
• The extent of hepatic involvement in NN has not been fully characterized.

Observation:

• This study reviewed clinical and histologic data of pediatric patients with suspected or confirmed NN.
• Liver disease was a universal finding in all children diagnosed with NN.

Findings:

• Three clinical phenotypes of NN were identified: infantile, childhood, and classical, all demonstrating progressive liver dysfunction leading to liver failure.
• Histologic examination revealed characteristic features including multinucleate giant cells, steatosis, inflammation, cholestasis, fibrosis, and cirrhosis.
• All observed phenotypes occurred within affected families, suggesting a genetic basis.

Implications:

• Liver disease is a critical and often predominant feature of Navajo neuropathy, particularly in infants and young children.
• The findings support renaming the condition to Navajo neurohepatopathy to accurately reflect its clinical spectrum.
• This research highlights the need for comprehensive evaluation of liver function in patients with NN.