Wilson disease and related copper disorders.

Area of Science:

• Biochemistry
• Genetics
• Neurology

Background:

• Copper is essential for enzyme function, and its metabolism is critical for health.
• Disruptions in copper metabolism can lead to diseases of excess or deficiency.
• Wilson disease (WD) is an inherited disorder resulting from mutations in the ATP7B gene.

Purpose of the Study:

• To review the genetic basis and clinical manifestations of Wilson disease.
• To discuss the spectrum of disorders caused by ATP7A gene mutations.
• To highlight nongenetic causes of copper deficiency myeloneuropathy.

Main Methods:

• Review of genetic mutations in ATP7B and ATP7A genes.
• Analysis of clinical presentations of copper metabolism disorders.
• Identification of environmental factors contributing to copper deficiency.

Main Results:

• Over 500 mutations in the ATP7B gene are linked to Wilson disease, primarily missense mutations.
• ATP7A gene mutations cause copper deficiency disorders like Menkes disease.
• Gastric bypass and excess zinc ingestion are significant nongenetic causes of copper deficiency myeloneuropathy.

Conclusions:

• Wilson disease requires timely diagnosis and treatment to prevent irreversible damage.
• Understanding genetic and environmental factors is key to managing copper-related diseases.
• Preventable causes of copper deficiency myeloneuropathy, such as post-gastric bypass, necessitate awareness and intervention.