Wilson disease

100 Facts About Wilson Disease

Definition & Basics

1. Wilson disease is an inherited disorder of copper metabolism.

2. In it, the body cannot properly remove excess copper.

3. Copper builds up, especially in the liver and brain.

4. It is also called hepatolenticular degeneration.

5. Copper is an essential trace mineral in small amounts.

6. In Wilson disease, normal copper balance is disrupted.

7. The liver normally removes excess copper through bile.

8. In Wilson disease, this copper excretion is impaired.

9. Excess copper is toxic to tissues.

10. It is a rare condition, affecting roughly 1 in 30,000 people.

Genetics

11. Wilson disease is caused by mutations in the ATP7B gene.

12. The ATP7B gene helps transport and excrete copper.

13. It is inherited in an autosomal recessive pattern.

14. Two copies of the faulty gene (one from each parent) are needed to develop it.

15. Carriers with one copy usually have no symptoms.

16. Many different ATP7B mutations have been identified.

17. The specific mutation can vary by population and geography.

18. Genetic testing can confirm the diagnosis.

19. Family members of affected people should be screened.

20. Siblings of a patient have a 1 in 4 chance of being affected.

How Copper Builds Up

21. Dietary copper is normally absorbed in the intestine.

22. The liver packages excess copper for excretion into bile.

23. In Wilson disease, copper isn't properly excreted into bile.

24. Copper accumulates first in the liver.

25. Once the liver's capacity is exceeded, copper spills into the blood.

26. Circulating copper then deposits in other organs.

27. The brain is a major site of copper accumulation.

28. Copper also deposits in the eyes and kidneys.

29. Ceruloplasmin, a copper-carrying protein, is often low in Wilson disease.

30. Copper buildup develops gradually over years.

Who It Affects

31. Symptoms usually appear between ages 5 and 35.

32. It can occasionally present in younger children or older adults.

33. It affects males and females roughly equally.

34. Liver symptoms often appear earlier (childhood to adolescence).

35. Neurological symptoms often appear later (adolescence to adulthood).

36. It occurs in all populations worldwide.

37. Rates may be higher in areas with more consanguinity.

Liver Symptoms

38. The liver is often the first organ affected.

39. Wilson disease can cause a range of liver problems.

40. It can cause elevated liver enzymes with no symptoms.

41. It can cause hepatitis-like inflammation.

42. It can cause fatty liver, sometimes mimicking other conditions.

43. It can progress to fibrosis and cirrhosis.

44. It can occasionally cause acute liver failure.

45. Acute liver failure from Wilson disease can be life-threatening.

46. Liver symptoms can include fatigue, jaundice, and abdominal swelling.

47. It should be considered in unexplained liver disease in young people.

Neurological & Psychiatric Symptoms

48. Copper in the brain can cause neurological symptoms.

49. Tremors are a common neurological sign.

50. It can cause difficulty with speech (dysarthria).

51. It can cause trouble swallowing (dysphagia).

52. It can cause problems with coordination and balance.

53. It can cause stiffness or slowed movements.

54. It can cause a characteristic "wing-beating" tremor.

55. Handwriting changes can be an early clue.

56. It can cause drooling in some cases.

57. Psychiatric symptoms can also occur.

58. These can include mood changes, depression, and irritability.

59. Personality changes can occur.

60. In some cases, psychiatric symptoms appear before other signs.

61. It can be misdiagnosed as a psychiatric condition initially.

The Eyes

62. Copper can deposit in the cornea of the eyes.

63. This creates Kayser-Fleischer rings.

64. Kayser-Fleischer rings are golden-brown rings around the iris.

65. They are a hallmark sign of Wilson disease.

66. They are often detected during a specialized eye exam (slit lamp).

67. They are more common when neurological symptoms are present.

68. They usually don't affect vision.

69. Copper can also cause a type of cataract ("sunflower cataract").

Other Effects

70. Wilson disease can cause a form of anemia (hemolytic anemia).

71. It can affect the kidneys.

72. It can cause bone and joint problems.

73. It can affect the heart in some cases.

74. It can cause menstrual irregularities or fertility issues.

75. Copper release can sometimes trigger sudden red blood cell breakdown.

Diagnosis

76. Diagnosis combines clinical, laboratory, and genetic findings.

77. Low blood ceruloplasmin supports the diagnosis.

78. High urinary copper excretion (24-hour test) is a key test.

79. Blood copper levels can be misleading and need careful interpretation.

80. A slit-lamp eye exam checks for Kayser-Fleischer rings.

81. Liver biopsy can measure copper content in liver tissue.

82. Elevated liver copper is an important diagnostic finding.

83. Genetic testing can confirm ATP7B mutations.

84. Brain MRI can show changes in neurological Wilson disease.

85. A scoring system helps combine findings for diagnosis.

86. Early diagnosis is critical to prevent irreversible damage.

Treatment

87. Wilson disease is treated by removing excess copper and preventing buildup.

88. Chelating agents bind copper so it can be excreted.

89. Penicillamine is a long-used chelating medication.

90. Trientine is another chelating agent, often better tolerated.

91. Zinc can block copper absorption in the intestine.

92. Zinc is often used for maintenance or in early/mild disease.

93. Treatment is lifelong.

94. Stopping treatment can lead to dangerous copper re-accumulation.

95. A low-copper diet supports treatment.

96. High-copper foods include liver, shellfish, nuts, chocolate, and mushrooms.

97. In acute liver failure or advanced disease, a liver transplant may be needed.

98. Liver transplant can effectively correct the underlying copper defect.

Outlook

99. With early treatment, many people live full, healthy lives.

100. Early detection and lifelong treatment are the keys to preventing serious damage.