Wilson Disease

Genetic MONDO:0010200 Pathograph 9 Metabolic Disease Liver Disease

Wilson disease is a rare autosomal recessive disorder of copper metabolism caused by mutations in the ATP7B gene encoding a copper-transporting P-type ATPase. ATP7B dysfunction impairs biliary copper excretion and ceruloplasmin biosynthesis, leading to toxic copper accumulation primarily in the liver and brain, with secondary involvement of the kidneys, eyes, heart, muscles, and bones. Clinical presentations range from asymptomatic liver disease to fulminant hepatic failure, chronic hepatitis, cirrhosis, and diverse neuropsychiatric manifestations including dystonia, tremor, dysarthria, depression, and psychosis. Kayser-Fleischer corneal rings and Coombs-negative hemolytic anemia are characteristic features. Diagnosis relies on the modified Leipzig Scoring System integrating serum ceruloplasmin, urinary copper, hepatic copper content, and genetic testing. Treatment with copper chelators (D-penicillamine, trientine) and zinc salts can prevent disease progression when initiated early; liver transplantation is curative for end-stage hepatic disease.

0
Mappings
0
Definitions
1
Inheritance
8
Pathophysiology
0
Histopathology
28
Phenotypes
9
Pathograph
1
Genes
6
Treatments
0
Subtypes
2
Differentials
1
Datasets
0
Trials
0
Models
👪

Inheritance

1
Autosomal Recessive HP:0000007
Autosomal recessive inheritance
Show evidence (1 reference)
PMID:37741465 SUPPORT
"Inactivating mutations of the copper-transporting P-type ATPase, ATP7B, result in Wilson's disease, an autosomal recessive disorder"
Directly states autosomal recessive inheritance for Wilson disease.
C

Comorbidities

Wilsons Disease <-> Osteoporosis
Disease A UNKNOWN CANDIDATE
📚

References

20
DOI:10.1016/j.pharmthera.2023.108529
Therapeutic implications of impaired nuclear receptor function and dysregulated metabolism in Wilson's disease
No top-level findings curated for this source.
DOI:10.1038/s41467-024-47001-4
Diverse roles of the metal binding domains and transport mechanism of copper transporting P-type ATPases
No top-level findings curated for this source.
DOI:10.1093/braincomms/fcae329
Structural lesions and transcriptomic specializations shape gradient perturbations in Wilson disease
No top-level findings curated for this source.
DOI:10.1152/physiol.00032.2025
Copper in Human Health and Disease: Insights from Inherited Disorders
No top-level findings curated for this source.
DOI:10.1186/s12974-024-03178-5
Aberrant copper metabolism and hepatic inflammation cause neurological manifestations in a mouse model of Wilson's disease
No top-level findings curated for this source.
DOI:10.3389/fmed.2025.1673283
The role of copper dysregulation in Wilson disease: an expert opinion
No top-level findings curated for this source.
DOI:10.3390/cells13141214
Navigating the CRISPR/Cas Landscape for Enhanced Diagnosis and Treatment of Wilson's Disease
No top-level findings curated for this source.
DOI:10.3390/ijms25094753
Wilson Disease: Copper-Mediated Cuproptosis, Iron-Related Ferroptosis, and Clinical Highlights, with Comprehensive and Critical Analysis Update
No top-level findings curated for this source.
DOI:10.3390/ijms25126487
The Role of Copper Overload in Modulating Neuropsychiatric Symptoms
No top-level findings curated for this source.
DOI:10.3390/ijms25147545
The Role of Glia in Wilson's Disease: Clinical, Neuroimaging, Neuropathological and Molecular Perspectives
No top-level findings curated for this source.
DOI:10.1289/ehp.02110s5695
Molecular mechanism of copper transport in Wilson disease
No top-level findings curated for this source.
DOI:10.1007/s00428-004-1047-8
Wilson disease
No top-level findings curated for this source.
DOI:10.1136/gut.2005.087262
Clinical presentation, diagnosis and long-term outcome of Wilson's disease: a cohort study
No top-level findings curated for this source.
DOI:10.1016/B978-0-444-63625-6.00010-0
Wilson disease
No top-level findings curated for this source.
DOI:10.1007/s10072-020-05013-0
Neurological features and outcomes of Wilson's disease: a single-center experience
No top-level findings curated for this source.
DOI:10.1097/MPG.0000000000003196
Pediatric Wilson's Disease
No top-level findings curated for this source.
DOI:10.1186/s13023-022-02245-5
Wilson disease in Northern Portugal: a long-term follow-up study
No top-level findings curated for this source.
DOI:10.1007/s00198-017-4295-6
Osteoporosis and bone mineral density in patients with Wilson's disease: a systematic review and meta-analysis
No top-level findings curated for this source.
DOI:10.3390/jcm11143975
Efficacy and Safety of Two Salts of Trientine in the Treatment of Wilson's Disease
No top-level findings curated for this source.
DOI:10.1016/j.jhep.2023.04.007
Neurological worsening in Wilson disease - clinical classification and outcome
No top-level findings curated for this source.
⚙

Pathophysiology

8
Impaired Biliary Copper Excretion
ATP7B mutations impair copper excretion into bile. ATP7B normally resides in the trans-Golgi network and traffics to the bile canalicular membrane when intracellular copper is elevated. Loss of ATP7B function prevents this copper export pathway.
hepatocyte link
copper ion transport link
P-type monovalent copper transporter activity link
Golgi apparatus link
Show evidence (3 references)
PMID:38731973 SUPPORT
"Copper accumulation in the liver is due to impaired biliary excretion of copper caused by the inheritable malfunctioning or missing ATP7B protein."
Confirms that impaired biliary copper excretion is the primary defect caused by ATP7B dysfunction.
PMID:16382340 SUPPORT
"ATP7B is the gene product of the WD gene located on chromosome 13 and resides in hepatocytes in the trans-Golgi network, transporting copper into the secretory pathway for incorporation into apoceruloplasmin and excretion into the bile."
Supports ATP7B localization to the trans-Golgi network with biliary excretion function.
PMID:18395099 SUPPORT
"Copper excess provokes a massive download of the ATP7B retained in the trans-Golgi network into the bile canalicular membrane."
Demonstrates copper-stimulated ATP7B trafficking to the canalicular membrane.
Impaired Ceruloplasmin Loading
ATP7B normally loads copper into apoceruloplasmin in the trans-Golgi network. Loss of ATP7B function results in secretion of copper-free apoceruloplasmin, which is rapidly degraded, leading to the characteristic low serum ceruloplasmin levels.
copper ion homeostasis link
P-type monovalent copper transporter activity link
Show evidence (1 reference)
PMID:16382340 SUPPORT
"ATP7B is the gene product of the WD gene located on chromosome 13 and resides in hepatocytes in the trans-Golgi network, transporting copper into the secretory pathway for incorporation into apoceruloplasmin and excretion into the bile."
Supports that ATP7B loads copper into apoceruloplasmin in the secretory pathway.
Hepatic Copper Accumulation
Impaired biliary excretion causes progressive copper retention in hepatocytes. When hepatic storage capacity is exceeded, copper is released into the circulation.
hepatocyte link
liver link
Show evidence (2 references)
PMID:16382340 SUPPORT
"Wilson disease (WD) is an autosomal recessive inherited disorder of copper metabolism, resulting in pathological accumulation of copper in many organs and tissues."
Supports multi-organ copper accumulation in Wilson disease.
PMID:38731973 SUPPORT
"Released from the liver cells due to limited storage capacity, the toxic copper enters the circulation and arrives at other organs, causing local accumulation and cell injury."
Confirms hepatic copper overflow into systemic circulation.
Systemic Copper Distribution
When hepatic copper storage capacity is exceeded, free copper enters the circulation and deposits in the brain, kidneys, eyes, heart, muscles, and bones, causing multi-organ injury.
Show evidence (2 references)
PMID:38731973 SUPPORT
"Released from the liver cells due to limited storage capacity, the toxic copper enters the circulation and arrives at other organs, causing local accumulation and cell injury. This explains why copper injures not only the liver, but also the brain"
Explains the pathophysiology of systemic copper distribution from hepatic overflow.
PMID:25002079 PARTIAL
"Free copper in Wilson disease (WD) is toxic and may reduce antioxidant, increase oxidative stress marker and thereby cytokine release and excitotoxic injury, but there is paucity of studies in humans."
Supports toxic effects of circulating free copper causing oxidative stress and excitotoxic injury.
Hepatocyte Injury
Copper accumulation in hepatocytes causes oxidative stress, mitochondrial dysfunction, and cell death. Progressive liver damage leads to fibrosis and cirrhosis. Copper overload activates autophagy and mitophagy-based mitochondrial quality control responses.
hepatocyte link
response to oxidative stress link mitophagy link
liver link
Show evidence (6 references)
PMID:38731973 SUPPORT
"Excess Cu2+ primarily leads to the generation of reactive oxygen species (ROS), as evidenced by early experimental studies exemplified with the detection of hydroxyl radical formation"
Demonstrates that excess copper generates ROS leading to oxidative stress and cellular injury.
PMID:24517326 SUPPORT
"On the contrary, however, when copper is massively deposited in mitochondria, severe structural and respiratory impairments are observed upon disease progression. This provokes reactive oxygen species and consequently causes the mitochondrial membranes to disintegrate, which triggers hepatocyte death."
Supports mitochondrial dysfunction, ROS generation, and hepatocyte death with copper overload.
PMID:28433112 SUPPORT
"Most liver biopsy specimens show moderate to severe steatosis, variable degree of portal and/or lobular inflammation, and fibrosis eventually progressing to cirrhosis."
Supports progression from hepatic injury to fibrosis and cirrhosis.
+ 3 more references
Neurodegeneration
Copper deposition is thought to drive brain cellular damage with characteristic striatal/basal ganglia lesions. Reactive astrogliosis and microglial activation with increased CNS inflammatory cytokines indicate neuroinflammation contributing to movement and psychiatric symptoms.
astrocyte link microglial cell link
neuron death link
collection of basal ganglia link putamen link
Show evidence (3 references)
PMID:28433113 SUPPORT
"In Wilson disease (WD), brain cellular damage is thought to be due to copper deposition. Striatal lesions are the most characteristic lesions found in the brain of patients with neurologic symptoms, as emphasized in the initial reports of S.A.K. Wilson."
Supports copper deposition driving brain damage with characteristic striatal lesions.
PMID:31179301 SUPPORT
"Most severe neuropathologic abnormalities, including tissue rarefaction, reactive astrogliosis, myelin palor, and presence of iron-laden macrophages, are typically present in the putamen while other basal ganglia, thalami, and brainstem are usually less affected."
Supports reactive astrogliosis and basal ganglia/putamen involvement.
PMID:39334421 PARTIAL Model Organism
"At 3-5 months of age, these mice started to display neurological deficits in motor coordination and cognitive dysfunction, accompanied by increased expression of inflammatory cytokines in the central nervous system. Microglia in the striatum and cortex exhibit significant activation, shorter..."
Demonstrates CNS inflammatory cytokines and microglial activation in a Wilson disease mouse model.
Cuproptosis
Copper-dependent cell death involving binding of copper to lipoylated enzymes in the tricarboxylic acid (TCA) cycle, leading to proteotoxic stress and mitochondrial dysfunction.
cuproptosis link
Show evidence (2 references)
PMID:38731973 PARTIAL
"Many interesting disease details were published on the mechanistic steps, such as the generation of reactive oxygen species (ROS) and cuproptosis causing a copper dependent cell death"
Establishes cuproptosis as a copper-dependent cell death mechanism in Wilson disease.
PMID:41006805 SUPPORT
"Moreover, abnormal lipoylation of the copper-dependent proteins metal-binding domain of ferredoxin 1 and dihydrolipoamide transacetylase causes mitochondrial protein oligomer buildup and tricarboxylic acid cycle dysfunction, reinforcing an "oxidative damage-inflammation-fibrosis" vicious cycle."
Supports lipoylation-related mitochondrial proteotoxic stress and TCA cycle dysfunction consistent with cuproptosis.
Ferroptosis
Iron-related cell death pathway involving phospholipid peroxidation. Increased iron deposits in Wilson disease liver may contribute to ferroptosis alongside copper-mediated injury.
ferroptosis link
Show evidence (1 reference)
PMID:38731973 SUPPORT
"In the liver of patients with Wilson disease, also, increased iron deposits were found that may lead to iron-related ferroptosis responsible for phospholipid peroxidation within membranes of subcellular organelles"
Demonstrates that ferroptosis may contribute to liver injury in Wilson disease due to iron accumulation.
⬡

Pathograph

Use the checkboxes to hide or show graph categories. Hover nodes for evidence and cross-linked metadata.
Pathograph: causal mechanism network for Wilson Disease Interactive directed graph showing how pathophysiology mechanisms, phenotypes, genetic factors and variants, experimental models, environmental triggers, and treatments relate through causal and linked edges.
●

Phenotypes

28
Blood 1
Hemolytic Anemia OCCASIONAL Hemolytic anemia (HP:0001878)
Coombs-negative hemolytic anemia is a key feature
Show evidence (1 reference)
PMID:38731973 SUPPORT
"In addition, Coombs-negative hemolytic anemia is a key feature of Wilson disease with undetectable serum haptoglobin"
Coombs-negative hemolytic anemia is described as a key feature of Wilson disease.
Cardiovascular 2
Cardiomyopathy OCCASIONAL Cardiomyopathy (HP:0001638)
Show evidence (1 reference)
PMID:38731973 SUPPORT
"This explains why copper injures not only the liver, but also the brain, kidneys, eyes, heart, muscles, and bones, explaining the multifaceted clinical features of Wilson disease. Among these are depression, psychosis, dysarthria, ataxia, writing problems, dysphagia, renal tubular dysfunction,..."
Cardiomyopathy is explicitly listed as a cardiac manifestation of Wilson disease due to copper deposition.
Cardiac Arrhythmia OCCASIONAL Arrhythmia (HP:0011675)
Show evidence (1 reference)
PMID:38731973 SUPPORT
"This explains why copper injures not only the liver, but also the brain, kidneys, eyes, heart, muscles, and bones, explaining the multifaceted clinical features of Wilson disease. Among these are depression, psychosis, dysarthria, ataxia, writing problems, dysphagia, renal tubular dysfunction,..."
Cardiac arrhythmias are explicitly listed as a cardiac manifestation of Wilson disease.
Digestive 5
Hepatomegaly VERY_FREQUENT Hepatomegaly (HP:0002240)
Show evidence (1 reference)
PMID:15205951 PARTIAL
"Resultant liver damage leads to steatosis, inflammation, cirrhosis, and, occasionally, fulminant liver failure."
Hepatic copper accumulation causes progressive liver damage including steatosis and inflammation, which manifest as hepatomegaly. Direct frequency data for hepatomegaly not available in this abstract.
Cirrhosis FREQUENT Cirrhosis (HP:0001394)
Can be presenting feature or develop over time
Show evidence (2 references)
PMID:35197085 SUPPORT
"Four patients (17%) presented with acute liver failure and fifteen (63%) individuals had cirrhosis at diagnosis."
Cohort data support cirrhosis as a common presenting hepatic phenotype in Wilson disease.
PMID:38731973 PARTIAL
"Liver transplantation is an option viewed as ultima ratio in end-stage liver disease with untreatable complications or acute liver failure."
End-stage liver disease including cirrhosis is a major complication requiring transplantation.
Acute Hepatic Failure OCCASIONAL Acute hepatic failure (HP:0006554)
May be a presenting event that requires urgent transplant evaluation
Show evidence (1 reference)
PMID:35197085 SUPPORT
"Four patients (17%) presented with acute liver failure and fifteen (63%) individuals had cirrhosis at diagnosis."
Supports acute hepatic failure as a recognized presenting hepatic manifestation in Wilson disease.
Hepatitis VERY_FREQUENT Hepatitis (HP:0012115)
May present as chronic hepatitis or acute hepatitis
Show evidence (2 references)
PMID:28433112 SUPPORT
"Most liver biopsy specimens show moderate to severe steatosis, variable degree of portal and/or lobular inflammation, and fibrosis eventually progressing to cirrhosis."
Liver biopsy findings of portal and lobular inflammation are consistent with hepatitis as a very frequent hepatic presentation.
PMID:28433112 SUPPORT
"Wilson disease may be microscopically misinterpreted as many other liver diseases, including viral or autoimmune hepatitis, alcoholic/nonalcoholic steatohepatitis, toxic liver injury, cryptogenic cirrhosis"
Wilson disease liver pathology frequently mimics hepatitis patterns, confirming hepatitis-like presentation.
Dysphagia FREQUENT Dysphagia (HP:0002015)
Show evidence (2 references)
PMID:38731973 SUPPORT
"Among these are depression, psychosis, dysarthria, ataxia, writing problems, dysphagia"
Dysphagia is explicitly listed as a neurological manifestation of Wilson disease.
PMID:28433096 SUPPORT
"spectrum of neurologic manifestations that includes tremor, bradykinesia, rigidity, dystonia, chorea, dysarthria, and dysphagia"
Confirms dysphagia among the core neurologic manifestations.
Eye 1
Kayser-Fleischer Rings VERY_FREQUENT Kayser-Fleischer ring (HP:0200032)
Copper deposits in Descemet membrane, pathognomonic
Show evidence (2 references)
PMID:16709660 SUPPORT
"Diagnostic criteria for non-caeruloplasmin-bound serum copper, serum caeruloplasmin, 24-h urinary copper excretion, liver copper content, presence of Kayser-Fleischer rings and histological signs of chronic liver damage were reached in 86.6%, 88.2%, 87.1%, 92.7%, 66.3% and 73% of patients, respectively."
Large-cohort data confirm frequent Kayser-Fleischer ring detection in diagnosed Wilson disease.
PMID:38731973 SUPPORT
"copper injures not only the liver, but also the brain, kidneys, eyes, heart, muscles, and bones, explaining the multifaceted clinical features of Wilson disease. Among these are depression, psychosis, dysarthria, ataxia, writing problems, dysphagia, renal tubular dysfunction, Kayser-Fleischer..."
Confirms Kayser-Fleischer rings as a key clinical feature of Wilson's disease due to copper deposition in the eyes.
Genitourinary 1
Renal Tubular Dysfunction OCCASIONAL Renal tubular dysfunction (HP:0000124)
Show evidence (1 reference)
PMID:38731973 SUPPORT
"This explains why copper injures not only the liver, but also the brain, kidneys, eyes, heart, muscles, and bones, explaining the multifaceted clinical features of Wilson disease. Among these are depression, psychosis, dysarthria, ataxia, writing problems, dysphagia, renal tubular dysfunction"
Renal tubular dysfunction is explicitly listed as a renal manifestation of Wilson disease.
Musculoskeletal 6
Rigidity OCCASIONAL Rigidity (HP:0002063)
Show evidence (1 reference)
PMID:28433096 SUPPORT
"spectrum of neurologic manifestations that includes tremor, bradykinesia, rigidity, dystonia, chorea, dysarthria, and dysphagia"
Supports rigidity as part of the neurologic movement phenotype spectrum.
Rhabdomyolysis OCCASIONAL Rhabdomyolysis (HP:0003201)
Show evidence (1 reference)
PMID:38731973 SUPPORT
"This explains why copper injures not only the liver, but also the brain, kidneys, eyes, heart, muscles, and bones, explaining the multifaceted clinical features of Wilson disease. Among these are depression, psychosis, dysarthria, ataxia, writing problems, dysphagia, renal tubular dysfunction,..."
Rhabdomyolysis is explicitly listed as a muscle manifestation in Wilson disease.
Osteoporosis OCCASIONAL Osteoporosis (HP:0000939)
Show evidence (2 references)
PMID:29110062 SUPPORT
"The pooled prevalencerates of osteopenia and osteoporosis in WD patients were 36.5%"
Meta-analysis supports frequent low bone density and osteoporosis in Wilson disease populations.
PMID:38731973 SUPPORT
"This explains why copper injures not only the liver, but also the brain, kidneys, eyes, heart, muscles, and bones, explaining the multifaceted clinical features of Wilson disease. Among these are depression, psychosis, dysarthria, ataxia, writing problems, dysphagia, renal tubular dysfunction,..."
Osteoporosis is explicitly listed as a skeletal manifestation of Wilson disease.
Osteopenia OCCASIONAL Osteopenia (HP:0000938)
Show evidence (1 reference)
PMID:29110062 SUPPORT
"The pooled prevalencerates of osteopenia and osteoporosis in WD patients were 36.5%"
Meta-analysis supports osteopenia as a common bone phenotype in Wilson disease.
Osteomalacia OCCASIONAL Osteomalacia (HP:0002749)
Show evidence (1 reference)
PMID:38731973 SUPPORT
"osteoporosis, osteomalacia, arthritis, and arthralgia"
Osteomalacia is explicitly listed among musculoskeletal manifestations in Wilson disease.
Arthritis OCCASIONAL Arthritis (HP:0001369)
Show evidence (1 reference)
PMID:38731973 SUPPORT
"osteoporosis, osteomalacia, arthritis, and arthralgia"
Arthritis is listed as a musculoskeletal manifestation of Wilson disease.
Nervous System 11
Tremor FREQUENT Tremor (HP:0001337)
Often wing-beating tremor
Show evidence (2 references)
PMID:33474589 SUPPORT
"most common neurological manifestation was dystonia, followed by tremor and parkinsonism."
Cohort data directly identify tremor as a common neurologic manifestation.
PMID:28433096 SUPPORT
"spectrum of neurologic manifestations that includes tremor, bradykinesia, rigidity, dystonia, chorea, dysarthria, and dysphagia"
Supports tremor as part of the core neurologic phenotype spectrum.
Dystonia FREQUENT Dystonia (HP:0001332)
Show evidence (2 references)
PMID:33474589 SUPPORT
"most common neurological manifestation was dystonia, followed by tremor and parkinsonism."
Cohort data support dystonia as the most common neurologic manifestation in this series.
PMID:28433096 SUPPORT
"spectrum of neurologic manifestations that includes tremor, bradykinesia, rigidity, dystonia, chorea, dysarthria, and dysphagia"
Supports dystonia as a core feature of neurologic Wilson disease.
Parkinsonism OCCASIONAL Parkinsonism (HP:0001300)
May include bradykinesia, rigidity, and tremor
Show evidence (2 references)
PMID:33474589 SUPPORT
"most common neurological manifestation was dystonia, followed by tremor and parkinsonism."
Cohort data directly report parkinsonism among predominant neurologic presentations.
PMID:28433096 SUPPORT
"spectrum of neurologic manifestations that includes tremor, bradykinesia, rigidity, dystonia, chorea, dysarthria, and dysphagia"
Supports parkinsonian-spectrum motor features in neurologic Wilson disease.
Bradykinesia OCCASIONAL Bradykinesia (HP:0002067)
Show evidence (1 reference)
PMID:28433096 SUPPORT
"spectrum of neurologic manifestations that includes tremor, bradykinesia, rigidity, dystonia, chorea, dysarthria, and dysphagia"
Supports bradykinesia as part of the neurologic movement phenotype spectrum.
Chorea OCCASIONAL Chorea (HP:0002072)
Show evidence (1 reference)
PMID:28433096 SUPPORT
"spectrum of neurologic manifestations that includes tremor, bradykinesia, rigidity, dystonia, chorea, dysarthria, and dysphagia"
Supports chorea as part of the neurologic movement phenotype spectrum.
Dysarthria FREQUENT Dysarthria (HP:0001260)
Show evidence (2 references)
PMID:38731973 SUPPORT
"Among these are depression, psychosis, dysarthria, ataxia, writing problems, dysphagia"
Dysarthria is explicitly listed as a neurological manifestation of Wilson disease.
PMID:28433096 SUPPORT
"spectrum of neurologic manifestations that includes tremor, bradykinesia, rigidity, dystonia, chorea, dysarthria, and dysphagia"
Confirms dysarthria among core neurologic Wilson disease features.
Ataxia FREQUENT Ataxia (HP:0001251)
Show evidence (1 reference)
PMID:38731973 SUPPORT
"Among these are depression, psychosis, dysarthria, ataxia, writing problems, dysphagia"
Ataxia is explicitly listed as a neurological manifestation of Wilson disease.
Dysgraphia OCCASIONAL Dysgraphia (HP:0010526)
Writing problems are reported as part of neurologic involvement
Show evidence (1 reference)
PMID:38731973 SUPPORT
"Among these are depression, psychosis, dysarthria, ataxia, writing problems, dysphagia"
Supports writing impairment as part of the neurologic Wilson disease phenotype.
Depression FREQUENT Depression (HP:0000716)
One of the most common psychiatric manifestations of Wilson disease
Show evidence (1 reference)
PMID:38731973 SUPPORT
"Among these are depression, psychosis, dysarthria, ataxia, writing problems"
Depression is explicitly listed as a neuropsychiatric manifestation of Wilson disease.
Psychosis OCCASIONAL Psychosis (HP:0000709)
Show evidence (1 reference)
PMID:38731973 SUPPORT
"Among these are depression, psychosis, dysarthria, ataxia, writing problems"
Psychosis is explicitly listed as a neuropsychiatric manifestation of Wilson disease.
Personality Changes OCCASIONAL Personality changes (HP:0000751)
Personality changes may be an early psychiatric manifestation
Show evidence (1 reference)
PMID:28433113 PARTIAL
"the cerebral copper content is not correlated with the severity of the neuropathologic abnormalities or with the neuropsychiatric symptomatology."
Reference to neuropsychiatric symptomatology in Wilson disease indirectly supports personality changes as a recognized psychiatric feature, though personality changes are not individually named in this abstract.
Constitutional 1
Arthralgia OCCASIONAL Arthralgia (HP:0002829)
Show evidence (1 reference)
PMID:38731973 SUPPORT
"osteoporosis, osteomalacia, arthritis, and arthralgia"
Arthralgia is explicitly listed among musculoskeletal manifestations in Wilson disease.
🧬

Genetic Associations

1
ATP7B (Causative)
Autosomal Recessive
Show evidence (2 references)
PMID:37741465 SUPPORT
"Inactivating mutations of the copper-transporting P-type ATPase, ATP7B, result in Wilson's disease, an autosomal recessive disorder"
Establishes ATP7B mutations as the causative genetic defect in Wilson's disease with autosomal recessive inheritance.
PMID:15205951 SUPPORT
"Thus far, more than 200 mutations of the WD gene have been detected, causing impairment of ATP7B function and, ultimately, copper accumulation."
Confirms large number of ATP7B mutations causing Wilson disease.
💊

Treatments

6
D-Penicillamine
Action: copper chelator agent therapy MAXO:0001224
Copper chelator, first-line therapy, promotes urinary copper excretion.
Show evidence (2 references)
PMID:38731973 SUPPORT
"Patients with Wilson disease are well-treated first-line with copper chelators like D-penicillamine that facilitate the removal of circulating copper bound to albumin and increase in urinary copper excretion. Early chelation therapy improves prognosis."
Establishes D-penicillamine as first-line chelation therapy with evidence for improved prognosis.
PMID:37116715 PARTIAL
"NW was observed with D-penicillamine, trientine and zinc therapy and was reversible in 15/30 (50%) with early NW and in 29/36 (81%) with late NW."
Large cohort data show treatment-associated neurological worsening can occur, supporting close neurologic monitoring during chelation.
Trientine
Action: copper chelator agent therapy MAXO:0001224
Alternative copper chelator, better tolerated than penicillamine.
Show evidence (1 reference)
PMID:35887738 SUPPORT
"The two salts of trientine were effective in treating patients with WD."
Directly supports trientine efficacy in treated Wilson disease cohorts.
Zinc Acetate
Action: pharmacotherapy MAXO:0000058
Agent: zinc acetate ↗
Blocks intestinal copper absorption, maintenance therapy.
Show evidence (1 reference)
PMID:37741465 SUPPORT
"reduction of copper absorption in the gut (zinc therapy)"
Confirms zinc therapy works by reducing intestinal copper absorption.
Low Copper Diet
Action: dietary intervention MAXO:0000088
Avoid liver, shellfish, chocolate, nuts, mushrooms.
Show evidence (1 reference)
PMID:38731973 PARTIAL
"copper, which is found ubiquitously on earth and normally enters the human body in small amounts via the food chain"
Establishes that dietary intake is a source of copper, supporting dietary restriction as an adjunctive treatment approach.
Tetrathiomolybdate
Action: copper chelator agent therapy MAXO:0001224
Agent: tetrathiomolybdate ↗
Emerging copper chelator that rapidly complexes free copper, reducing bioavailable copper.
Show evidence (1 reference)
PMID:37741465 PARTIAL
"Current treatment protocols are limited to either sequestration of copper via chelation or reduction of copper absorption in the gut"
Tetrathiomolybdate represents an emerging chelation approach that tightly complexes copper.
Liver Transplantation
Action: liver transplantation MAXO:0001175
Curative for hepatic Wilson disease, reverses copper metabolism defect.
Show evidence (1 reference)
PMID:38731973 SUPPORT
"Liver transplantation is an option viewed as ultima ratio in end-stage liver disease with untreatable complications or acute liver failure. Liver transplantation finally may thus be a life-saving approach and curative treatment of the disease by replacing the hepatic gene mutation."
Confirms liver transplantation as curative treatment that replaces the defective gene.
🌍

Environmental Factors

1
Dietary Copper
High copper foods may accelerate accumulation
Show evidence (1 reference)
PMID:38731973 PARTIAL
"copper, which is found ubiquitously on earth and normally enters the human body in small amounts via the food chain"
Dietary copper intake contributes to body copper load, making dietary restriction an important adjunctive measure.
🔬

Biochemical Markers

4
Ceruloplasmin (Decreased)
Context: Low in over 90 percent of patients (less than 20 mg/dL)
Show evidence (1 reference)
PMID:15205951 SUPPORT
"The diagnosis of WD is commonly made on the basis of typical clinical and laboratory findings, including low serum ceruloplasmin, increased urinary copper excretion, and increased hepatic copper content."
Directly supports low serum ceruloplasmin as a diagnostic biochemical feature.
Non-Ceruloplasmin-Bound Serum Copper (Elevated)
Context: Free copper fraction is elevated; a key diagnostic biomarker criterion met in 86.6% of patients
Show evidence (2 references)
PMID:16709660 SUPPORT
"Diagnostic criteria for non-caeruloplasmin-bound serum copper, serum caeruloplasmin, 24-h urinary copper excretion, liver copper content, presence of Kayser-Fleischer rings and histological signs of chronic liver damage were reached in 86.6%, 88.2%, 87.1%, 92.7%, 66.3% and 73% of patients, respectively."
Supports non-ceruloplasmin-bound copper as a commonly met diagnostic biomarker criterion.
PMID:37741465 PARTIAL
"The goal of these strategies is to reduce free copper, redox stress, and cellular toxicity"
Elevated free copper is the therapeutic target in Wilson disease, confirming its pathological elevation.
24-Hour Urinary Copper (Elevated)
Context: Elevated urinary copper is diagnostic
Show evidence (1 reference)
PMID:15205951 SUPPORT
"The diagnosis of WD is commonly made on the basis of typical clinical and laboratory findings, including low serum ceruloplasmin, increased urinary copper excretion, and increased hepatic copper content."
Directly supports increased urinary copper excretion as a diagnostic biochemical feature.
Hepatic Copper (Elevated)
Context: Liver biopsy with elevated copper is diagnostic
Show evidence (1 reference)
PMID:15205951 SUPPORT
"The diagnosis of WD is commonly made on the basis of typical clinical and laboratory findings, including low serum ceruloplasmin, increased urinary copper excretion, and increased hepatic copper content."
Directly supports increased hepatic copper content as a key diagnostic criterion.
🔀

Differential Diagnoses

2

Conditions with similar clinical presentations that must be differentiated from Wilson Disease:

Autoimmune Hepatitis
Overlapping Features Autoimmune hepatitis can present with similar hepatic inflammation, elevated transaminases, and cirrhosis. Wilson disease liver pathology is frequently misinterpreted as autoimmune hepatitis.
Distinguishing Features
  • Positive autoimmune markers (ANA, anti-SMA) in autoimmune hepatitis
  • Low ceruloplasmin and elevated urinary copper distinguish Wilson disease
  • Kayser-Fleischer rings absent in autoimmune hepatitis
Show evidence (1 reference)
PMID:28433112 SUPPORT
"Wilson disease may be microscopically misinterpreted as many other liver diseases, including viral or autoimmune hepatitis, alcoholic/nonalcoholic steatohepatitis, toxic liver injury, cryptogenic cirrhosis"
Directly states that Wilson disease liver pathology can mimic autoimmune hepatitis.
Non-Alcoholic Steatohepatitis
Overlapping Features NASH shares histological features with Wilson disease including steatosis, inflammation, and fibrosis.
Distinguishing Features
  • Metabolic syndrome features (obesity, insulin resistance) in NASH
  • Normal ceruloplasmin and urinary copper in NASH
  • Copper quantification on liver biopsy differentiates
Show evidence (1 reference)
PMID:28433112 SUPPORT
"Wilson disease may be microscopically misinterpreted as many other liver diseases, including viral or autoimmune hepatitis, alcoholic/nonalcoholic steatohepatitis, toxic liver injury, cryptogenic cirrhosis"
Confirms histological overlap between Wilson disease and steatohepatitis.
📊

Related Datasets

1
Expression data from Wilson disease patients liver geo:GSE197406
Microarray expression profiling of liver tissue from Wilson disease patients and controls.
human MICROARRAY n=15
liver tissue
Conditions: Wilson disease control liver tissue
Includes 7 Wilson disease and 8 control liver samples.
{ }

Source YAML

click to show 
name: Wilson Disease
creation_date: '2025-12-19T14:27:56Z'
updated_date: '2026-04-06T22:37:07Z'
category: Genetic
description: >
  Wilson disease is a rare autosomal recessive disorder of copper metabolism caused by mutations
  in the ATP7B gene encoding a copper-transporting P-type ATPase. ATP7B dysfunction impairs
  biliary copper excretion and ceruloplasmin biosynthesis, leading to toxic copper accumulation
  primarily in the liver and brain, with secondary involvement of the kidneys, eyes, heart,
  muscles, and bones. Clinical presentations range from asymptomatic liver disease to fulminant
  hepatic failure, chronic hepatitis, cirrhosis, and diverse neuropsychiatric manifestations
  including dystonia, tremor, dysarthria, depression, and psychosis. Kayser-Fleischer corneal
  rings and Coombs-negative hemolytic anemia are characteristic features. Diagnosis relies on
  the modified Leipzig Scoring System integrating serum ceruloplasmin, urinary copper, hepatic
  copper content, and genetic testing. Treatment with copper chelators (D-penicillamine, trientine)
  and zinc salts can prevent disease progression when initiated early; liver transplantation is
  curative for end-stage hepatic disease.
disease_term:
  preferred_term: Wilson disease
  term:
    id: MONDO:0010200
    label: Wilson disease
synonyms:
- hepatolenticular degeneration
- WD
parents:
- Metabolic Disease
- Liver Disease
inheritance:
- name: Autosomal Recessive
  inheritance_term:
    preferred_term: Autosomal recessive inheritance
    term:
      id: HP:0000007
      label: Autosomal recessive inheritance
  evidence:
  - reference: PMID:37741465
    reference_title: "Therapeutic implications of impaired nuclear receptor function and dysregulated metabolism in Wilson's disease."
    supports: SUPPORT
    snippet: "Inactivating mutations of the copper-transporting P-type ATPase, ATP7B, result in Wilson's disease, an autosomal recessive disorder"
    explanation: Directly states autosomal recessive inheritance for Wilson disease.
prevalence:
- population: Global clinically diagnosed populations
  percentage: 1 in 30,000
  notes: >-
    Clinical prevalence estimates for Wilson disease are typically around 1 in
    30,000, although national registry estimates can be lower or higher
    depending on ascertainment intensity and diagnostic capture.
  evidence:
  - reference: PMID:23518715
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "Using this most conservative approach, the calculated frequency of individuals predicted to carry two mutant pathogenic ATP7B alleles is 1:7026 and thus still considerably higher than the typically reported prevalence of Wilson's disease of 1:30 000."
    explanation: This paper explicitly cites the conventional clinically recognized prevalence of Wilson disease as about 1 in 30,000.
  - reference: PMID:38565173
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "Results:  The average age- and sex-adjusted prevalence and incidence of WD between 2010 and 2020 were 3.06/100,000 and 0.11/100,000, respectively."
    explanation: A contemporary national claims analysis shows a clinically ascertained prevalence of 3.06 per 100,000 in Korea, consistent with rare-disease prevalence.
- population: Global population sequencing datasets
  percentage: 13.9 per 100,000
  notes: >-
    Sequencing-based studies estimate a substantially higher genetic prevalence
    than clinically diagnosed prevalence, suggesting underdiagnosis and/or
    reduced penetrance in some ATP7B genotype carriers.
  evidence:
  - reference: PMID:30254379
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "Based on these, the genetic prevalence of WD was 13.9 per 100,000 (95% CI: 12.9-14.9), or 1 per 7194."
    explanation: Meta-analysis of ATP7B sequencing data provides a global genetic prevalence estimate for Wilson disease.
  - reference: PMID:23518715
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "Using this most conservative approach, the calculated frequency of individuals predicted to carry two mutant pathogenic ATP7B alleles is 1:7026 and thus still considerably higher than the typically reported prevalence of Wilson's disease of 1:30 000."
    explanation: Independent UK sequencing data supports a similarly elevated genetic prevalence estimate relative to diagnosed cases.
mechanistic_hypotheses:
- hypothesis_group_id: canonical_atp7b_copper_retention
  hypothesis_label: Canonical ATP7B Copper-Retention Model
  status: CANONICAL
  description: >
    ATP7B loss impairs biliary copper excretion and ceruloplasmin loading,
    causing hepatic copper retention with secondary extrahepatic toxicity.
  evidence:
  - reference: PMID:12426114
    reference_title: "Molecular mechanism of copper transport in Wilson disease."
    supports: SUPPORT
    snippet: "The Wilson disease protein is a putative copper-transporting P-type ATPase, ATP7B, whose malfunction results in the toxic accumulation of copper in the liver and brain, causing the hepatic and/or neurological symptoms accompanying this disease."
    explanation: Supports ATP7B dysfunction as the core mechanism that links copper retention to hepatic and neurologic disease.
- hypothesis_group_id: oxidative_mitochondrial_injury_model
  hypothesis_label: Oxidative-Mitochondrial Injury Model
  status: CANONICAL
  description: >
    Copper excess drives reactive oxygen species and lipid peroxidation,
    producing mitochondrial injury and hepatocellular damage.
  evidence:
  - reference: PMID:15205951
    reference_title: "Wilson disease."
    supports: SUPPORT
    snippet: "Excess copper, however, induces free-radical reactions and lipid peroxidation."
    explanation: Directly supports oxidative injury as a canonical downstream mechanism.
- hypothesis_group_id: neurodegenerative_movement_model
  hypothesis_label: Neurodegenerative Movement Disorder Model
  status: CANONICAL
  description: >
    Progressive copper-related brain injury in motor control circuits drives
    dysarthria, dystonia, parkinsonism, and related movement phenotypes.
  evidence:
  - reference: PMID:28433096
    reference_title: "Wilson disease: neurologic features."
    supports: SUPPORT
    snippet: "Wilson disease (WD) is a neurodegenerative disorder, which presents as a spectrum of neurologic manifestations that includes tremor, bradykinesia, rigidity, dystonia, chorea, dysarthria, and dysphagia"
    explanation: Supports neurodegeneration as a major explanatory framework for Wilson disease movement phenotypes.
- hypothesis_group_id: cuproptosis_model
  hypothesis_label: Copper-Dependent Cuproptosis Model
  status: EMERGING
  description: >
    Beyond oxidative damage alone, copper may induce a distinct mitochondrial
    cell-death program (cuproptosis) that amplifies tissue injury.
  evidence:
  - reference: PMID:38731973
    reference_title: "Wilson Disease: Copper-Mediated Cuproptosis, Iron-Related Ferroptosis, and Clinical Highlights, with Comprehensive and Critical Analysis Update."
    supports: SUPPORT
    snippet: "Many interesting disease details were published on the mechanistic steps, such as the generation of reactive oxygen species (ROS) and cuproptosis causing a copper dependent cell death."
    explanation: Supports cuproptosis as an emerging mechanistic layer in Wilson disease.
- hypothesis_group_id: ferroptosis_superimposition_model
  hypothesis_label: Iron-Related Ferroptosis Superimposition Model
  status: EMERGING
  description: >
    Secondary hepatic iron deposition may superimpose iron-driven ferroptotic
    injury on copper-mediated pathology.
  evidence:
  - reference: PMID:38731973
    reference_title: "Wilson Disease: Copper-Mediated Cuproptosis, Iron-Related Ferroptosis, and Clinical Highlights, with Comprehensive and Critical Analysis Update."
    supports: SUPPORT
    snippet: "In the liver of patients with Wilson disease, also, increased iron deposits were found that may lead to iron-related ferroptosis responsible for phospholipid peroxidation within membranes of subcellular organelles"
    explanation: Supports a superimposed ferroptosis hypothesis in hepatic Wilson disease.
pathophysiology:
- name: Impaired Biliary Copper Excretion
  description: >
    ATP7B mutations impair copper excretion into bile. ATP7B normally resides in
    the trans-Golgi network and traffics to the bile canalicular membrane when
    intracellular copper is elevated. Loss of ATP7B function prevents this
    copper export pathway.
  gene:
    preferred_term: ATP7B
    term:
      id: hgnc:870
      label: ATP7B
  molecular_functions:
  - preferred_term: P-type monovalent copper transporter activity
    term:
      id: GO:0140581
      label: P-type monovalent copper transporter activity
  evidence:
  - reference: PMID:38731973
    reference_title: "Wilson Disease: Copper-Mediated Cuproptosis, Iron-Related Ferroptosis, and Clinical Highlights, with Comprehensive and Critical Analysis Update."
    supports: SUPPORT
    snippet: "Copper accumulation in the liver is due to impaired biliary excretion of copper caused by the inheritable malfunctioning or missing ATP7B protein."
    explanation: Confirms that impaired biliary copper excretion is the primary defect caused by ATP7B dysfunction.
  - reference: PMID:16382340
    reference_title: "Wilson disease."
    supports: SUPPORT
    snippet: "ATP7B is the gene product of the WD gene located on chromosome 13 and resides in hepatocytes in the trans-Golgi network, transporting copper into the secretory pathway for incorporation into apoceruloplasmin and excretion into the bile."
    explanation: Supports ATP7B localization to the trans-Golgi network with biliary excretion function.
  - reference: PMID:18395099
    reference_title: "ATP7B copper-regulated traffic and association with the tight junctions: copper excretion into the bile."
    supports: SUPPORT
    snippet: "Copper excess provokes a massive download of the ATP7B retained in the trans-Golgi network into the bile canalicular membrane."
    explanation: Demonstrates copper-stimulated ATP7B trafficking to the canalicular membrane.
  biological_processes:
  - preferred_term: copper ion transport
    term:
      id: GO:0006825
      label: copper ion transport
  cellular_components:
  - preferred_term: Golgi apparatus
    term:
      id: GO:0005794
      label: Golgi apparatus
  cell_types:
  - preferred_term: hepatocyte
    term:
      id: CL:0000182
      label: hepatocyte
  downstream:
  - target: Hepatic Copper Accumulation
    description: Loss of biliary copper excretion leads to progressive copper retention in hepatocytes.

- name: Impaired Ceruloplasmin Loading
  description: >
    ATP7B normally loads copper into apoceruloplasmin in the trans-Golgi network.
    Loss of ATP7B function results in secretion of copper-free apoceruloplasmin,
    which is rapidly degraded, leading to the characteristic low serum
    ceruloplasmin levels.
  gene:
    preferred_term: ATP7B
    term:
      id: hgnc:870
      label: ATP7B
  molecular_functions:
  - preferred_term: P-type monovalent copper transporter activity
    term:
      id: GO:0140581
      label: P-type monovalent copper transporter activity
  evidence:
  - reference: PMID:16382340
    reference_title: "Wilson disease."
    supports: SUPPORT
    snippet: "ATP7B is the gene product of the WD gene located on chromosome 13 and resides in hepatocytes in the trans-Golgi network, transporting copper into the secretory pathway for incorporation into apoceruloplasmin and excretion into the bile."
    explanation: Supports that ATP7B loads copper into apoceruloplasmin in the secretory pathway.
  biological_processes:
  - preferred_term: copper ion homeostasis
    term:
      id: GO:0055070
      label: copper ion homeostasis

- name: Hepatic Copper Accumulation
  description: >
    Impaired biliary excretion causes progressive copper retention in
    hepatocytes. When hepatic storage capacity is exceeded, copper is
    released into the circulation.
  evidence:
  - reference: PMID:16382340
    reference_title: "Wilson disease."
    supports: SUPPORT
    snippet: "Wilson disease (WD) is an autosomal recessive inherited disorder of copper metabolism, resulting in pathological accumulation of copper in many organs and tissues."
    explanation: Supports multi-organ copper accumulation in Wilson disease.
  - reference: PMID:38731973
    reference_title: "Wilson Disease: Copper-Mediated Cuproptosis, Iron-Related Ferroptosis, and Clinical Highlights, with Comprehensive and Critical Analysis Update."
    supports: SUPPORT
    snippet: "Released from the liver cells due to limited storage capacity, the toxic copper enters the circulation and arrives at other organs, causing local accumulation and cell injury."
    explanation: Confirms hepatic copper overflow into systemic circulation.
  cell_types:
  - preferred_term: hepatocyte
    term:
      id: CL:0000182
      label: hepatocyte
  locations:
  - preferred_term: liver
    term:
      id: UBERON:0002107
      label: liver
  downstream:
  - target: Hepatocyte Injury
    description: Copper overload in hepatocytes drives oxidative stress and cell death.
  - target: Systemic Copper Distribution
    description: Overflow of copper from the liver enters the circulation and deposits in extrahepatic organs.

- name: Systemic Copper Distribution
  description: >
    When hepatic copper storage capacity is exceeded, free copper enters
    the circulation and deposits in the brain, kidneys, eyes, heart,
    muscles, and bones, causing multi-organ injury.
  evidence:
  - reference: PMID:38731973
    reference_title: "Wilson Disease: Copper-Mediated Cuproptosis, Iron-Related Ferroptosis, and Clinical Highlights, with Comprehensive and Critical Analysis Update."
    supports: SUPPORT
    snippet: "Released from the liver cells due to limited storage capacity, the toxic copper enters the circulation and arrives at other organs, causing local accumulation and cell injury. This explains why copper injures not only the liver, but also the brain"
    explanation: Explains the pathophysiology of systemic copper distribution from hepatic overflow.
  - reference: PMID:25002079
    reference_title: "A study of oxidative stress, cytokines and glutamate in Wilson disease and their asymptomatic siblings."
    supports: PARTIAL
    snippet: "Free copper in Wilson disease (WD) is toxic and may reduce antioxidant, increase oxidative stress marker and thereby cytokine release and excitotoxic injury, but there is paucity of studies in humans."
    explanation: Supports toxic effects of circulating free copper causing oxidative stress and excitotoxic injury.
  downstream:
  - target: Neurodegeneration
    description: Copper deposition in the basal ganglia and other brain regions causes neuronal injury.

- name: Hepatocyte Injury
  description: >
    Copper accumulation in hepatocytes causes oxidative stress, mitochondrial
    dysfunction, and cell death. Progressive liver damage leads to fibrosis
    and cirrhosis. Copper overload activates autophagy and mitophagy-based
    mitochondrial quality control responses.
  evidence:
  - reference: PMID:38731973
    reference_title: "Wilson Disease: Copper-Mediated Cuproptosis, Iron-Related Ferroptosis, and Clinical Highlights, with Comprehensive and Critical Analysis Update."
    supports: SUPPORT
    snippet: "Excess Cu2+ primarily leads to the generation of reactive oxygen species (ROS), as evidenced by early experimental studies exemplified with the detection of hydroxyl radical formation"
    explanation: Demonstrates that excess copper generates ROS leading to oxidative stress and cellular injury.
  - reference: PMID:24517326
    reference_title: "Pathological mitochondrial copper overload in livers of Wilson's disease patients and related animal models."
    supports: SUPPORT
    snippet: "On the contrary, however, when copper is massively deposited in mitochondria, severe structural and respiratory impairments are observed upon disease progression. This provokes reactive oxygen species and consequently causes the mitochondrial membranes to disintegrate, which triggers hepatocyte death."
    explanation: Supports mitochondrial dysfunction, ROS generation, and hepatocyte death with copper overload.
  - reference: PMID:28433112
    reference_title: "Wilson disease - liver pathology."
    supports: SUPPORT
    snippet: "Most liver biopsy specimens show moderate to severe steatosis, variable degree of portal and/or lobular inflammation, and fibrosis eventually progressing to cirrhosis."
    explanation: Supports progression from hepatic injury to fibrosis and cirrhosis.
  - reference: PMID:30452922
    reference_title: "Activation of Autophagy, Observed in Liver Tissues From Patients With Wilson Disease and From ATP7B-Deficient Animals, Protects Hepatocytes From Copper-Induced Apoptosis."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "ATP7B-deficient hepatocytes, such as in those in patients with WD, activate autophagy in response to copper overload to prevent copper-induced apoptosis."
    explanation: Demonstrates that human Wilson disease hepatocytes activate autophagy as a protective response to copper overload.
  - reference: PMID:30452922
    reference_title: "Activation of Autophagy, Observed in Liver Tissues From Patients With Wilson Disease and From ATP7B-Deficient Animals, Protects Hepatocytes From Copper-Induced Apoptosis."
    supports: SUPPORT
    evidence_source: MODEL_ORGANISM
    snippet: "Hepatocytes in liver tissues from patients with WD and from Atp7b-/- mice and rats (but not controls) had multiple autophagosomes."
    explanation: Atp7b-/- mice and rats confirm autophagosome accumulation in ATP7B-deficient hepatocytes, corroborating the human findings.
  - reference: PMID:33360697
    reference_title: "Exposure to copper induces mitochondria-mediated apoptosis by inhibiting mitophagy and the PINK1/parkin pathway in chicken (Gallus gallus) livers."
    supports: PARTIAL
    evidence_source: MODEL_ORGANISM
    snippet: "In general, the results reveal that Cu exposure can cause mitophagy through the PINK1/Parkin pathway in chicken livers, and that mitophagy might attenuate Cu-induced mitochondrial apoptosis."
    explanation: Shows copper-induced mitophagy in chicken liver tissue (non-standard model), supporting mitochondrial quality control responses to copper overload.
  cell_types:
  - preferred_term: hepatocyte
    term:
      id: CL:0000182
      label: hepatocyte
  locations:
  - preferred_term: liver
    term:
      id: UBERON:0002107
      label: liver
  biological_processes:
  - preferred_term: response to oxidative stress
    term:
      id: GO:0006979
      label: response to oxidative stress
  - preferred_term: mitophagy
    term:
      id: GO:0000423
      label: mitophagy
  downstream:
  - target: Cuproptosis
    description: Copper-dependent cell death amplifies hepatocyte injury.
  - target: Ferroptosis
    description: Secondary iron deposition may superimpose ferroptotic injury.

- name: Neurodegeneration
  description: >
    Copper deposition is thought to drive brain cellular damage with
    characteristic striatal/basal ganglia lesions. Reactive astrogliosis and
    microglial activation with increased CNS inflammatory cytokines indicate
    neuroinflammation contributing to movement and psychiatric symptoms.
  evidence:
  - reference: PMID:28433113
    reference_title: "Wilson disease: brain pathology."
    supports: SUPPORT
    snippet: "In Wilson disease (WD), brain cellular damage is thought to be due to copper deposition. Striatal lesions are the most characteristic lesions found in the brain of patients with neurologic symptoms, as emphasized in the initial reports of S.A.K. Wilson."
    explanation: Supports copper deposition driving brain damage with characteristic striatal lesions.
  - reference: PMID:31179301
    reference_title: "Neurologic impairment in Wilson disease."
    supports: SUPPORT
    snippet: "Most severe neuropathologic abnormalities, including tissue rarefaction, reactive astrogliosis, myelin palor, and presence of iron-laden macrophages, are typically present in the putamen while other basal ganglia, thalami, and brainstem are usually less affected."
    explanation: Supports reactive astrogliosis and basal ganglia/putamen involvement.
  - reference: PMID:39334421
    reference_title: "Aberrant copper metabolism and hepatic inflammation cause neurological manifestations in a mouse model of Wilson's disease."
    supports: PARTIAL
    evidence_source: MODEL_ORGANISM
    snippet: "At 3-5 months of age, these mice started to display neurological deficits in motor coordination and cognitive dysfunction, accompanied by increased expression of inflammatory cytokines in the central nervous system. Microglia in the striatum and cortex exhibit significant activation, shorter processes, and decreased branch points."
    explanation: Demonstrates CNS inflammatory cytokines and microglial activation in a Wilson disease mouse model.
  cell_types:
  - preferred_term: astrocyte
    term:
      id: CL:0000127
      label: astrocyte
  - preferred_term: microglial cell
    term:
      id: CL:0000129
      label: microglial cell
  locations:
  - preferred_term: collection of basal ganglia
    term:
      id: UBERON:0010011
      label: collection of basal ganglia
  - preferred_term: putamen
    term:
      id: UBERON:0001874
      label: putamen
  biological_processes:
  - preferred_term: neuron death
    term:
      id: GO:0051402
      label: neuron apoptotic process
- name: Cuproptosis
  description: >
    Copper-dependent cell death involving binding of copper to lipoylated
    enzymes in the tricarboxylic acid (TCA) cycle, leading to proteotoxic
    stress and mitochondrial dysfunction.
  evidence:
  - reference: PMID:38731973
    reference_title: "Wilson Disease: Copper-Mediated Cuproptosis, Iron-Related Ferroptosis, and Clinical Highlights, with Comprehensive and Critical Analysis Update."
    supports: PARTIAL
    snippet: "Many interesting disease details were published on the mechanistic steps, such as the generation of reactive oxygen species (ROS) and cuproptosis causing a copper dependent cell death"
    explanation: Establishes cuproptosis as a copper-dependent cell death mechanism in Wilson disease.
  - reference: PMID:41006805
    reference_title: "The pathogenesis of liver fibrosis in Wilson's disease: hepatocyte injury and regulation mediated by copper metabolism dysregulation."
    supports: SUPPORT
    snippet: "Moreover, abnormal lipoylation of the copper-dependent proteins metal-binding domain of ferredoxin 1 and dihydrolipoamide transacetylase causes mitochondrial protein oligomer buildup and tricarboxylic acid cycle dysfunction, reinforcing an \"oxidative damage-inflammation-fibrosis\" vicious cycle."
    explanation: Supports lipoylation-related mitochondrial proteotoxic stress and TCA cycle dysfunction consistent with cuproptosis.
  biological_processes:
  - preferred_term: cuproptosis
    term:
      id: GO:0160119
      label: cuproptosis
- name: Ferroptosis
  description: >
    Iron-related cell death pathway involving phospholipid peroxidation.
    Increased iron deposits in Wilson disease liver may contribute to
    ferroptosis alongside copper-mediated injury.
  evidence:
  - reference: PMID:38731973
    reference_title: "Wilson Disease: Copper-Mediated Cuproptosis, Iron-Related Ferroptosis, and Clinical Highlights, with Comprehensive and Critical Analysis Update."
    supports: SUPPORT
    snippet: "In the liver of patients with Wilson disease, also, increased iron deposits were found that may lead to iron-related ferroptosis responsible for phospholipid peroxidation within membranes of subcellular organelles"
    explanation: Demonstrates that ferroptosis may contribute to liver injury in Wilson disease due to iron accumulation.
  biological_processes:
  - preferred_term: ferroptosis
    term:
      id: GO:0097707
      label: ferroptosis
phenotypes:
- name: Hepatomegaly
  category: Hepatic
  frequency: VERY_FREQUENT
  evidence:
  - reference: PMID:15205951
    reference_title: "Wilson disease."
    supports: PARTIAL
    snippet: "Resultant liver damage leads to steatosis, inflammation, cirrhosis, and, occasionally, fulminant liver failure."
    explanation: Hepatic copper accumulation causes progressive liver damage including steatosis and inflammation, which manifest as hepatomegaly. Direct frequency data for hepatomegaly not available in this abstract.
  phenotype_term:
    preferred_term: Hepatomegaly
    term:
      id: HP:0002240
      label: Hepatomegaly
- name: Cirrhosis
  category: Hepatic
  frequency: FREQUENT
  notes: Can be presenting feature or develop over time
  evidence:
  - reference: PMID:35197085
    reference_title: "Wilson disease in Northern Portugal: a long-term follow-up study."
    supports: SUPPORT
    snippet: "Four patients (17%) presented with acute liver failure and fifteen (63%) individuals had cirrhosis at diagnosis."
    explanation: Cohort data support cirrhosis as a common presenting hepatic phenotype in Wilson disease.
  - reference: PMID:38731973
    reference_title: "Wilson Disease: Copper-Mediated Cuproptosis, Iron-Related Ferroptosis, and Clinical Highlights, with Comprehensive and Critical Analysis Update."
    supports: PARTIAL
    snippet: "Liver transplantation is an option viewed as ultima ratio in end-stage liver disease with untreatable complications or acute liver failure."
    explanation: End-stage liver disease including cirrhosis is a major complication requiring transplantation.
  phenotype_term:
    preferred_term: Cirrhosis
    term:
      id: HP:0001394
      label: Cirrhosis
- name: Acute Hepatic Failure
  category: Hepatic
  frequency: OCCASIONAL
  notes: May be a presenting event that requires urgent transplant evaluation
  evidence:
  - reference: PMID:35197085
    reference_title: "Wilson disease in Northern Portugal: a long-term follow-up study."
    supports: SUPPORT
    snippet: "Four patients (17%) presented with acute liver failure and fifteen (63%) individuals had cirrhosis at diagnosis."
    explanation: Supports acute hepatic failure as a recognized presenting hepatic manifestation in Wilson disease.
  phenotype_term:
    preferred_term: Acute hepatic failure
    term:
      id: HP:0006554
      label: Acute hepatic failure
- name: Hepatitis
  category: Hepatic
  frequency: VERY_FREQUENT
  notes: May present as chronic hepatitis or acute hepatitis
  evidence:
  - reference: PMID:28433112
    reference_title: "Wilson disease - liver pathology."
    supports: SUPPORT
    snippet: "Most liver biopsy specimens show moderate to severe steatosis, variable degree of portal and/or lobular inflammation, and fibrosis eventually progressing to cirrhosis."
    explanation: Liver biopsy findings of portal and lobular inflammation are consistent with hepatitis as a very frequent hepatic presentation.
  - reference: PMID:28433112
    reference_title: "Wilson disease - liver pathology."
    supports: SUPPORT
    snippet: "Wilson disease may be microscopically misinterpreted as many other liver diseases, including viral or autoimmune hepatitis, alcoholic/nonalcoholic steatohepatitis, toxic liver injury, cryptogenic cirrhosis"
    explanation: Wilson disease liver pathology frequently mimics hepatitis patterns, confirming hepatitis-like presentation.
  phenotype_term:
    preferred_term: Hepatitis
    term:
      id: HP:0012115
      label: Hepatitis
- name: Kayser-Fleischer Rings
  category: Ocular
  frequency: VERY_FREQUENT
  diagnostic: true
  notes: Copper deposits in Descemet membrane, pathognomonic
  evidence:
  - reference: PMID:16709660
    reference_title: "Clinical presentation, diagnosis and long-term outcome of Wilson's disease: a cohort study."
    supports: SUPPORT
    snippet: "Diagnostic criteria for non-caeruloplasmin-bound serum copper, serum caeruloplasmin, 24-h urinary copper excretion, liver copper content, presence of Kayser-Fleischer rings and histological signs of chronic liver damage were reached in 86.6%, 88.2%, 87.1%, 92.7%, 66.3% and 73% of patients, respectively."
    explanation: Large-cohort data confirm frequent Kayser-Fleischer ring detection in diagnosed Wilson disease.
  - reference: PMID:38731973
    reference_title: "Wilson Disease: Copper-Mediated Cuproptosis, Iron-Related Ferroptosis, and Clinical Highlights, with Comprehensive and Critical Analysis Update."
    supports: SUPPORT
    snippet: "copper injures not only the liver, but also the brain, kidneys, eyes, heart, muscles, and bones, explaining the multifaceted clinical features of Wilson disease. Among these are depression, psychosis, dysarthria, ataxia, writing problems, dysphagia, renal tubular dysfunction, Kayser-Fleischer corneal rings"
    explanation: Confirms Kayser-Fleischer rings as a key clinical feature of Wilson's disease due to copper deposition in the eyes.
  phenotype_term:
    preferred_term: Kayser-Fleischer ring
    term:
      id: HP:0200032
      label: Kayser-Fleischer ring
- name: Tremor
  category: Neurological
  frequency: FREQUENT
  notes: Often wing-beating tremor
  evidence:
  - reference: PMID:33474589
    reference_title: "Neurological features and outcomes of Wilson's disease: a single-center experience."
    supports: SUPPORT
    snippet: "most common neurological manifestation was dystonia, followed by tremor and parkinsonism."
    explanation: Cohort data directly identify tremor as a common neurologic manifestation.
  - reference: PMID:28433096
    reference_title: "Wilson disease: neurologic features."
    supports: SUPPORT
    snippet: "spectrum of neurologic manifestations that includes tremor, bradykinesia, rigidity, dystonia, chorea, dysarthria, and dysphagia"
    explanation: Supports tremor as part of the core neurologic phenotype spectrum.
  phenotype_term:
    preferred_term: Tremor
    term:
      id: HP:0001337
      label: Tremor
- name: Dystonia
  category: Neurological
  frequency: FREQUENT
  evidence:
  - reference: PMID:33474589
    reference_title: "Neurological features and outcomes of Wilson's disease: a single-center experience."
    supports: SUPPORT
    snippet: "most common neurological manifestation was dystonia, followed by tremor and parkinsonism."
    explanation: Cohort data support dystonia as the most common neurologic manifestation in this series.
  - reference: PMID:28433096
    reference_title: "Wilson disease: neurologic features."
    supports: SUPPORT
    snippet: "spectrum of neurologic manifestations that includes tremor, bradykinesia, rigidity, dystonia, chorea, dysarthria, and dysphagia"
    explanation: Supports dystonia as a core feature of neurologic Wilson disease.
  phenotype_term:
    preferred_term: Dystonia
    term:
      id: HP:0001332
      label: Dystonia
- name: Parkinsonism
  category: Neurological
  frequency: OCCASIONAL
  notes: May include bradykinesia, rigidity, and tremor
  evidence:
  - reference: PMID:33474589
    reference_title: "Neurological features and outcomes of Wilson's disease: a single-center experience."
    supports: SUPPORT
    snippet: "most common neurological manifestation was dystonia, followed by tremor and parkinsonism."
    explanation: Cohort data directly report parkinsonism among predominant neurologic presentations.
  - reference: PMID:28433096
    reference_title: "Wilson disease: neurologic features."
    supports: SUPPORT
    snippet: "spectrum of neurologic manifestations that includes tremor, bradykinesia, rigidity, dystonia, chorea, dysarthria, and dysphagia"
    explanation: Supports parkinsonian-spectrum motor features in neurologic Wilson disease.
  phenotype_term:
    preferred_term: Parkinsonism
    term:
      id: HP:0001300
      label: Parkinsonism
- name: Bradykinesia
  category: Neurological
  frequency: OCCASIONAL
  evidence:
  - reference: PMID:28433096
    reference_title: "Wilson disease: neurologic features."
    supports: SUPPORT
    snippet: "spectrum of neurologic manifestations that includes tremor, bradykinesia, rigidity, dystonia, chorea, dysarthria, and dysphagia"
    explanation: Supports bradykinesia as part of the neurologic movement phenotype spectrum.
  phenotype_term:
    preferred_term: Bradykinesia
    term:
      id: HP:0002067
      label: Bradykinesia
- name: Rigidity
  category: Neurological
  frequency: OCCASIONAL
  evidence:
  - reference: PMID:28433096
    reference_title: "Wilson disease: neurologic features."
    supports: SUPPORT
    snippet: "spectrum of neurologic manifestations that includes tremor, bradykinesia, rigidity, dystonia, chorea, dysarthria, and dysphagia"
    explanation: Supports rigidity as part of the neurologic movement phenotype spectrum.
  phenotype_term:
    preferred_term: Rigidity
    term:
      id: HP:0002063
      label: Rigidity
- name: Chorea
  category: Neurological
  frequency: OCCASIONAL
  evidence:
  - reference: PMID:28433096
    reference_title: "Wilson disease: neurologic features."
    supports: SUPPORT
    snippet: "spectrum of neurologic manifestations that includes tremor, bradykinesia, rigidity, dystonia, chorea, dysarthria, and dysphagia"
    explanation: Supports chorea as part of the neurologic movement phenotype spectrum.
  phenotype_term:
    preferred_term: Chorea
    term:
      id: HP:0002072
      label: Chorea
- name: Dysarthria
  category: Neurological
  frequency: FREQUENT
  evidence:
  - reference: PMID:38731973
    reference_title: "Wilson Disease: Copper-Mediated Cuproptosis, Iron-Related Ferroptosis, and Clinical Highlights, with Comprehensive and Critical Analysis Update."
    supports: SUPPORT
    snippet: "Among these are depression, psychosis, dysarthria, ataxia, writing problems, dysphagia"
    explanation: Dysarthria is explicitly listed as a neurological manifestation of Wilson disease.
  - reference: PMID:28433096
    reference_title: "Wilson disease: neurologic features."
    supports: SUPPORT
    snippet: "spectrum of neurologic manifestations that includes tremor, bradykinesia, rigidity, dystonia, chorea, dysarthria, and dysphagia"
    explanation: Confirms dysarthria among core neurologic Wilson disease features.
  phenotype_term:
    preferred_term: Dysarthria
    term:
      id: HP:0001260
      label: Dysarthria
- name: Ataxia
  category: Neurological
  frequency: FREQUENT
  evidence:
  - reference: PMID:38731973
    reference_title: "Wilson Disease: Copper-Mediated Cuproptosis, Iron-Related Ferroptosis, and Clinical Highlights, with Comprehensive and Critical Analysis Update."
    supports: SUPPORT
    snippet: "Among these are depression, psychosis, dysarthria, ataxia, writing problems, dysphagia"
    explanation: Ataxia is explicitly listed as a neurological manifestation of Wilson disease.
  phenotype_term:
    preferred_term: Ataxia
    term:
      id: HP:0001251
      label: Ataxia
- name: Dysphagia
  category: Neurological
  frequency: FREQUENT
  evidence:
  - reference: PMID:38731973
    reference_title: "Wilson Disease: Copper-Mediated Cuproptosis, Iron-Related Ferroptosis, and Clinical Highlights, with Comprehensive and Critical Analysis Update."
    supports: SUPPORT
    snippet: "Among these are depression, psychosis, dysarthria, ataxia, writing problems, dysphagia"
    explanation: Dysphagia is explicitly listed as a neurological manifestation of Wilson disease.
  - reference: PMID:28433096
    reference_title: "Wilson disease: neurologic features."
    supports: SUPPORT
    snippet: "spectrum of neurologic manifestations that includes tremor, bradykinesia, rigidity, dystonia, chorea, dysarthria, and dysphagia"
    explanation: Confirms dysphagia among the core neurologic manifestations.
  phenotype_term:
    preferred_term: Dysphagia
    term:
      id: HP:0002015
      label: Dysphagia
- name: Dysgraphia
  category: Neurological
  frequency: OCCASIONAL
  notes: Writing problems are reported as part of neurologic involvement
  evidence:
  - reference: PMID:38731973
    reference_title: "Wilson Disease: Copper-Mediated Cuproptosis, Iron-Related Ferroptosis, and Clinical Highlights, with Comprehensive and Critical Analysis Update."
    supports: SUPPORT
    snippet: "Among these are depression, psychosis, dysarthria, ataxia, writing problems, dysphagia"
    explanation: Supports writing impairment as part of the neurologic Wilson disease phenotype.
  phenotype_term:
    preferred_term: Dysgraphia
    term:
      id: HP:0010526
      label: Dysgraphia
- name: Depression
  category: Psychiatric
  frequency: FREQUENT
  notes: One of the most common psychiatric manifestations of Wilson disease
  evidence:
  - reference: PMID:38731973
    reference_title: "Wilson Disease: Copper-Mediated Cuproptosis, Iron-Related Ferroptosis, and Clinical Highlights, with Comprehensive and Critical Analysis Update."
    supports: SUPPORT
    snippet: "Among these are depression, psychosis, dysarthria, ataxia, writing problems"
    explanation: Depression is explicitly listed as a neuropsychiatric manifestation of Wilson disease.
  phenotype_term:
    preferred_term: Depression
    term:
      id: HP:0000716
      label: Depression
- name: Psychosis
  category: Psychiatric
  frequency: OCCASIONAL
  evidence:
  - reference: PMID:38731973
    reference_title: "Wilson Disease: Copper-Mediated Cuproptosis, Iron-Related Ferroptosis, and Clinical Highlights, with Comprehensive and Critical Analysis Update."
    supports: SUPPORT
    snippet: "Among these are depression, psychosis, dysarthria, ataxia, writing problems"
    explanation: Psychosis is explicitly listed as a neuropsychiatric manifestation of Wilson disease.
  phenotype_term:
    preferred_term: Psychosis
    term:
      id: HP:0000709
      label: Psychosis
- name: Personality Changes
  category: Psychiatric
  frequency: OCCASIONAL
  notes: Personality changes may be an early psychiatric manifestation
  evidence:
  - reference: PMID:28433113
    reference_title: "Wilson disease: brain pathology."
    supports: PARTIAL
    snippet: "the cerebral copper content is not correlated with the severity of the neuropathologic abnormalities or with the neuropsychiatric symptomatology."
    explanation: Reference to neuropsychiatric symptomatology in Wilson disease indirectly supports personality changes as a recognized psychiatric feature, though personality changes are not individually named in this abstract.
  phenotype_term:
    preferred_term: Personality changes
    term:
      id: HP:0000751
      label: Personality changes
- name: Cardiomyopathy
  category: Cardiac
  frequency: OCCASIONAL
  evidence:
  - reference: PMID:38731973
    reference_title: "Wilson Disease: Copper-Mediated Cuproptosis, Iron-Related Ferroptosis, and Clinical Highlights, with Comprehensive and Critical Analysis Update."
    supports: SUPPORT
    snippet: "This explains why copper injures not only the liver, but also the brain, kidneys, eyes, heart, muscles, and bones, explaining the multifaceted clinical features of Wilson disease. Among these are depression, psychosis, dysarthria, ataxia, writing problems, dysphagia, renal tubular dysfunction, Kayser-Fleischer corneal rings, cardiomyopathy, cardiac arrhythmias"
    explanation: Cardiomyopathy is explicitly listed as a cardiac manifestation of Wilson disease due to copper deposition.
  phenotype_term:
    preferred_term: Cardiomyopathy
    term:
      id: HP:0001638
      label: Cardiomyopathy
- name: Cardiac Arrhythmia
  category: Cardiac
  frequency: OCCASIONAL
  evidence:
  - reference: PMID:38731973
    reference_title: "Wilson Disease: Copper-Mediated Cuproptosis, Iron-Related Ferroptosis, and Clinical Highlights, with Comprehensive and Critical Analysis Update."
    supports: SUPPORT
    snippet: "This explains why copper injures not only the liver, but also the brain, kidneys, eyes, heart, muscles, and bones, explaining the multifaceted clinical features of Wilson disease. Among these are depression, psychosis, dysarthria, ataxia, writing problems, dysphagia, renal tubular dysfunction, Kayser-Fleischer corneal rings, cardiomyopathy, cardiac arrhythmias"
    explanation: Cardiac arrhythmias are explicitly listed as a cardiac manifestation of Wilson disease.
  phenotype_term:
    preferred_term: Arrhythmia
    term:
      id: HP:0011675
      label: Arrhythmia
- name: Renal Tubular Dysfunction
  category: Renal
  frequency: OCCASIONAL
  evidence:
  - reference: PMID:38731973
    reference_title: "Wilson Disease: Copper-Mediated Cuproptosis, Iron-Related Ferroptosis, and Clinical Highlights, with Comprehensive and Critical Analysis Update."
    supports: SUPPORT
    snippet: "This explains why copper injures not only the liver, but also the brain, kidneys, eyes, heart, muscles, and bones, explaining the multifaceted clinical features of Wilson disease. Among these are depression, psychosis, dysarthria, ataxia, writing problems, dysphagia, renal tubular dysfunction"
    explanation: Renal tubular dysfunction is explicitly listed as a renal manifestation of Wilson disease.
  phenotype_term:
    preferred_term: Renal tubular dysfunction
    term:
      id: HP:0000124
      label: Renal tubular dysfunction
- name: Hemolytic Anemia
  category: Hematologic
  frequency: OCCASIONAL
  notes: Coombs-negative hemolytic anemia is a key feature
  evidence:
  - reference: PMID:38731973
    reference_title: "Wilson Disease: Copper-Mediated Cuproptosis, Iron-Related Ferroptosis, and Clinical Highlights, with Comprehensive and Critical Analysis Update."
    supports: SUPPORT
    snippet: "In addition, Coombs-negative hemolytic anemia is a key feature of Wilson disease with undetectable serum haptoglobin"
    explanation: Coombs-negative hemolytic anemia is described as a key feature of Wilson disease.
  phenotype_term:
    preferred_term: Hemolytic anemia
    term:
      id: HP:0001878
      label: Hemolytic anemia
- name: Rhabdomyolysis
  category: Muscular
  frequency: OCCASIONAL
  evidence:
  - reference: PMID:38731973
    reference_title: "Wilson Disease: Copper-Mediated Cuproptosis, Iron-Related Ferroptosis, and Clinical Highlights, with Comprehensive and Critical Analysis Update."
    supports: SUPPORT
    snippet: "This explains why copper injures not only the liver, but also the brain, kidneys, eyes, heart, muscles, and bones, explaining the multifaceted clinical features of Wilson disease. Among these are depression, psychosis, dysarthria, ataxia, writing problems, dysphagia, renal tubular dysfunction, Kayser-Fleischer corneal rings, cardiomyopathy, cardiac arrhythmias, rhabdomyolysis, osteoporosis"
    explanation: Rhabdomyolysis is explicitly listed as a muscle manifestation in Wilson disease.
  phenotype_term:
    preferred_term: Rhabdomyolysis
    term:
      id: HP:0003201
      label: Rhabdomyolysis
- name: Osteoporosis
  category: Skeletal
  frequency: OCCASIONAL
  evidence:
  - reference: PMID:29110062
    reference_title: "Osteoporosis and bone mineral density in patients with Wilson's disease: a systematic review and meta-analysis."
    supports: SUPPORT
    snippet: "The pooled prevalencerates of osteopenia and osteoporosis in WD patients were 36.5%"
    explanation: Meta-analysis supports frequent low bone density and osteoporosis in Wilson disease populations.
  - reference: PMID:38731973
    reference_title: "Wilson Disease: Copper-Mediated Cuproptosis, Iron-Related Ferroptosis, and Clinical Highlights, with Comprehensive and Critical Analysis Update."
    supports: SUPPORT
    snippet: "This explains why copper injures not only the liver, but also the brain, kidneys, eyes, heart, muscles, and bones, explaining the multifaceted clinical features of Wilson disease. Among these are depression, psychosis, dysarthria, ataxia, writing problems, dysphagia, renal tubular dysfunction, Kayser-Fleischer corneal rings, cardiomyopathy, cardiac arrhythmias, rhabdomyolysis, osteoporosis"
    explanation: Osteoporosis is explicitly listed as a skeletal manifestation of Wilson disease.
  phenotype_term:
    preferred_term: Osteoporosis
    term:
      id: HP:0000939
      label: Osteoporosis
- name: Osteopenia
  category: Skeletal
  frequency: OCCASIONAL
  evidence:
  - reference: PMID:29110062
    reference_title: "Osteoporosis and bone mineral density in patients with Wilson's disease: a systematic review and meta-analysis."
    supports: SUPPORT
    snippet: "The pooled prevalencerates of osteopenia and osteoporosis in WD patients were 36.5%"
    explanation: Meta-analysis supports osteopenia as a common bone phenotype in Wilson disease.
  phenotype_term:
    preferred_term: Osteopenia
    term:
      id: HP:0000938
      label: Osteopenia
- name: Osteomalacia
  category: Skeletal
  frequency: OCCASIONAL
  evidence:
  - reference: PMID:38731973
    reference_title: "Wilson Disease: Copper-Mediated Cuproptosis, Iron-Related Ferroptosis, and Clinical Highlights, with Comprehensive and Critical Analysis Update."
    supports: SUPPORT
    snippet: "osteoporosis, osteomalacia, arthritis, and arthralgia"
    explanation: Osteomalacia is explicitly listed among musculoskeletal manifestations in Wilson disease.
  phenotype_term:
    preferred_term: Osteomalacia
    term:
      id: HP:0002749
      label: Osteomalacia
- name: Arthritis
  category: Skeletal
  frequency: OCCASIONAL
  evidence:
  - reference: PMID:38731973
    reference_title: "Wilson Disease: Copper-Mediated Cuproptosis, Iron-Related Ferroptosis, and Clinical Highlights, with Comprehensive and Critical Analysis Update."
    supports: SUPPORT
    snippet: "osteoporosis, osteomalacia, arthritis, and arthralgia"
    explanation: Arthritis is listed as a musculoskeletal manifestation of Wilson disease.
  phenotype_term:
    preferred_term: Arthritis
    term:
      id: HP:0001369
      label: Arthritis
- name: Arthralgia
  category: Skeletal
  frequency: OCCASIONAL
  evidence:
  - reference: PMID:38731973
    reference_title: "Wilson Disease: Copper-Mediated Cuproptosis, Iron-Related Ferroptosis, and Clinical Highlights, with Comprehensive and Critical Analysis Update."
    supports: SUPPORT
    snippet: "osteoporosis, osteomalacia, arthritis, and arthralgia"
    explanation: Arthralgia is explicitly listed among musculoskeletal manifestations in Wilson disease.
  phenotype_term:
    preferred_term: Arthralgia
    term:
      id: HP:0002829
      label: Arthralgia
biochemical:
- name: Ceruloplasmin
  presence: Decreased
  context: Low in over 90 percent of patients (less than 20 mg/dL)
  evidence:
  - reference: PMID:15205951
    reference_title: "Wilson disease."
    supports: SUPPORT
    snippet: "The diagnosis of WD is commonly made on the basis of typical clinical and laboratory findings, including low serum ceruloplasmin, increased urinary copper excretion, and increased hepatic copper content."
    explanation: Directly supports low serum ceruloplasmin as a diagnostic biochemical feature.
- name: Non-Ceruloplasmin-Bound Serum Copper
  presence: Elevated
  context: Free copper fraction is elevated; a key diagnostic biomarker criterion met in 86.6% of patients
  evidence:
  - reference: PMID:16709660
    reference_title: "Clinical presentation, diagnosis and long-term outcome of Wilson's disease: a cohort study."
    supports: SUPPORT
    snippet: "Diagnostic criteria for non-caeruloplasmin-bound serum copper, serum caeruloplasmin, 24-h urinary copper excretion, liver copper content, presence of Kayser-Fleischer rings and histological signs of chronic liver damage were reached in 86.6%, 88.2%, 87.1%, 92.7%, 66.3% and 73% of patients, respectively."
    explanation: Supports non-ceruloplasmin-bound copper as a commonly met diagnostic biomarker criterion.
  - reference: PMID:37741465
    reference_title: "Therapeutic implications of impaired nuclear receptor function and dysregulated metabolism in Wilson's disease."
    supports: PARTIAL
    snippet: "The goal of these strategies is to reduce free copper, redox stress, and cellular toxicity"
    explanation: Elevated free copper is the therapeutic target in Wilson disease, confirming its pathological elevation.
- name: 24-Hour Urinary Copper
  presence: Elevated
  context: Elevated urinary copper is diagnostic
  evidence:
  - reference: PMID:15205951
    reference_title: "Wilson disease."
    supports: SUPPORT
    snippet: "The diagnosis of WD is commonly made on the basis of typical clinical and laboratory findings, including low serum ceruloplasmin, increased urinary copper excretion, and increased hepatic copper content."
    explanation: Directly supports increased urinary copper excretion as a diagnostic biochemical feature.
- name: Hepatic Copper
  presence: Elevated
  context: Liver biopsy with elevated copper is diagnostic
  evidence:
  - reference: PMID:15205951
    reference_title: "Wilson disease."
    supports: SUPPORT
    snippet: "The diagnosis of WD is commonly made on the basis of typical clinical and laboratory findings, including low serum ceruloplasmin, increased urinary copper excretion, and increased hepatic copper content."
    explanation: Directly supports increased hepatic copper content as a key diagnostic criterion.
genetic:
- name: ATP7B
  association: Causative
  gene_term:
    preferred_term: ATP7B
    term:
      id: hgnc:870
      label: ATP7B
  inheritance:
  - name: Autosomal Recessive
  notes: More than 200 mutations described; most common include H1069Q in European populations
  evidence:
  - reference: PMID:37741465
    reference_title: "Therapeutic implications of impaired nuclear receptor function and dysregulated metabolism in Wilson's disease."
    supports: SUPPORT
    snippet: "Inactivating mutations of the copper-transporting P-type ATPase, ATP7B, result in Wilson's disease, an autosomal recessive disorder"
    explanation: Establishes ATP7B mutations as the causative genetic defect in Wilson's disease with autosomal recessive inheritance.
  - reference: PMID:15205951
    reference_title: "Wilson disease."
    supports: SUPPORT
    snippet: "Thus far, more than 200 mutations of the WD gene have been detected, causing impairment of ATP7B function and, ultimately, copper accumulation."
    explanation: Confirms large number of ATP7B mutations causing Wilson disease.
environmental:
- name: Dietary Copper
  notes: High copper foods may accelerate accumulation
  evidence:
  - reference: PMID:38731973
    reference_title: "Wilson Disease: Copper-Mediated Cuproptosis, Iron-Related Ferroptosis, and Clinical Highlights, with Comprehensive and Critical Analysis Update."
    supports: PARTIAL
    snippet: "copper, which is found ubiquitously on earth and normally enters the human body in small amounts via the food chain"
    explanation: Dietary copper intake contributes to body copper load, making dietary restriction an important adjunctive measure.
treatments:
- name: D-Penicillamine
  description: Copper chelator, first-line therapy, promotes urinary copper excretion.
  evidence:
  - reference: PMID:38731973
    reference_title: "Wilson Disease: Copper-Mediated Cuproptosis, Iron-Related Ferroptosis, and Clinical Highlights, with Comprehensive and Critical Analysis Update."
    supports: SUPPORT
    snippet: "Patients with Wilson disease are well-treated first-line with copper chelators like D-penicillamine that facilitate the removal of circulating copper bound to albumin and increase in urinary copper excretion. Early chelation therapy improves prognosis."
    explanation: Establishes D-penicillamine as first-line chelation therapy with evidence for improved prognosis.
  - reference: PMID:37116715
    reference_title: "Neurological worsening in Wilson disease - clinical classification and outcome."
    supports: PARTIAL
    snippet: "NW was observed with D-penicillamine, trientine and zinc therapy and was reversible in 15/30 (50%) with early NW and in 29/36 (81%) with late NW."
    explanation: Large cohort data show treatment-associated neurological worsening can occur, supporting close neurologic monitoring during chelation.
  treatment_term:
    preferred_term: copper chelator agent therapy
    term:
      id: MAXO:0001224
      label: copper chelator agent therapy
- name: Trientine
  description: Alternative copper chelator, better tolerated than penicillamine.
  evidence:
  - reference: PMID:35887738
    reference_title: "Efficacy and Safety of Two Salts of Trientine in the Treatment of Wilson's Disease."
    supports: SUPPORT
    snippet: "The two salts of trientine were effective in treating patients with WD."
    explanation: Directly supports trientine efficacy in treated Wilson disease cohorts.
  treatment_term:
    preferred_term: copper chelator agent therapy
    term:
      id: MAXO:0001224
      label: copper chelator agent therapy
- name: Zinc Acetate
  description: Blocks intestinal copper absorption, maintenance therapy.
  evidence:
  - reference: PMID:37741465
    reference_title: "Therapeutic implications of impaired nuclear receptor function and dysregulated metabolism in Wilson's disease."
    supports: SUPPORT
    snippet: "reduction of copper absorption in the gut (zinc therapy)"
    explanation: Confirms zinc therapy works by reducing intestinal copper absorption.
  treatment_term:
    preferred_term: pharmacotherapy
    term:
      id: MAXO:0000058
      label: pharmacotherapy
    therapeutic_agent:
    - preferred_term: zinc acetate
      term:
        id: CHEBI:62984
        label: zinc acetate
- name: Low Copper Diet
  description: Avoid liver, shellfish, chocolate, nuts, mushrooms.
  evidence:
  - reference: PMID:38731973
    reference_title: "Wilson Disease: Copper-Mediated Cuproptosis, Iron-Related Ferroptosis, and Clinical Highlights, with Comprehensive and Critical Analysis Update."
    supports: PARTIAL
    snippet: "copper, which is found ubiquitously on earth and normally enters the human body in small amounts via the food chain"
    explanation: Establishes that dietary intake is a source of copper, supporting dietary restriction as an adjunctive treatment approach.
  treatment_term:
    preferred_term: dietary intervention
    term:
      id: MAXO:0000088
      label: dietary intervention
- name: Tetrathiomolybdate
  description: Emerging copper chelator that rapidly complexes free copper, reducing bioavailable copper.
  evidence:
  - reference: PMID:37741465
    reference_title: "Therapeutic implications of impaired nuclear receptor function and dysregulated metabolism in Wilson's disease."
    supports: PARTIAL
    snippet: "Current treatment protocols are limited to either sequestration of copper via chelation or reduction of copper absorption in the gut"
    explanation: Tetrathiomolybdate represents an emerging chelation approach that tightly complexes copper.
  treatment_term:
    preferred_term: copper chelator agent therapy
    term:
      id: MAXO:0001224
      label: copper chelator agent therapy
    therapeutic_agent:
    - preferred_term: tetrathiomolybdate
      term:
        id: CHEBI:30703
        label: tetrathiomolybdate(2-)
- name: Liver Transplantation
  description: Curative for hepatic Wilson disease, reverses copper metabolism defect.
  evidence:
  - reference: PMID:38731973
    reference_title: "Wilson Disease: Copper-Mediated Cuproptosis, Iron-Related Ferroptosis, and Clinical Highlights, with Comprehensive and Critical Analysis Update."
    supports: SUPPORT
    snippet: "Liver transplantation is an option viewed as ultima ratio in end-stage liver disease with untreatable complications or acute liver failure. Liver transplantation finally may thus be a life-saving approach and curative treatment of the disease by replacing the hepatic gene mutation."
    explanation: Confirms liver transplantation as curative treatment that replaces the defective gene.
  treatment_term:
    preferred_term: liver transplantation
    term:
      id: MAXO:0001175
      label: liver transplantation
differential_diagnoses:
- name: Autoimmune Hepatitis
  description: >
    Autoimmune hepatitis can present with similar hepatic inflammation,
    elevated transaminases, and cirrhosis. Wilson disease liver pathology
    is frequently misinterpreted as autoimmune hepatitis.
  distinguishing_features:
  - Positive autoimmune markers (ANA, anti-SMA) in autoimmune hepatitis
  - Low ceruloplasmin and elevated urinary copper distinguish Wilson disease
  - Kayser-Fleischer rings absent in autoimmune hepatitis
  evidence:
  - reference: PMID:28433112
    reference_title: "Wilson disease - liver pathology."
    supports: SUPPORT
    snippet: "Wilson disease may be microscopically misinterpreted as many other liver diseases, including viral or autoimmune hepatitis, alcoholic/nonalcoholic steatohepatitis, toxic liver injury, cryptogenic cirrhosis"
    explanation: Directly states that Wilson disease liver pathology can mimic autoimmune hepatitis.
- name: Non-Alcoholic Steatohepatitis
  description: >
    NASH shares histological features with Wilson disease including steatosis,
    inflammation, and fibrosis.
  distinguishing_features:
  - Metabolic syndrome features (obesity, insulin resistance) in NASH
  - Normal ceruloplasmin and urinary copper in NASH
  - Copper quantification on liver biopsy differentiates
  evidence:
  - reference: PMID:28433112
    reference_title: "Wilson disease - liver pathology."
    supports: SUPPORT
    snippet: "Wilson disease may be microscopically misinterpreted as many other liver diseases, including viral or autoimmune hepatitis, alcoholic/nonalcoholic steatohepatitis, toxic liver injury, cryptogenic cirrhosis"
    explanation: Confirms histological overlap between Wilson disease and steatohepatitis.
datasets:
- accession: geo:GSE197406
  title: Expression data from Wilson disease patients liver
  description: Microarray expression profiling of liver tissue from Wilson disease patients and controls.
  organism:
    preferred_term: human
    term:
      id: NCBITaxon:9606
      label: Homo sapiens
  data_type: MICROARRAY
  sample_types:
  - preferred_term: liver tissue
    tissue_term:
      preferred_term: liver
      term:
        id: UBERON:0002107
        label: liver
  sample_count: 15
  conditions:
  - Wilson disease
  - control liver tissue
  notes: Includes 7 Wilson disease and 8 control liver samples.
references:
- reference: DOI:10.1016/j.pharmthera.2023.108529
  title: Therapeutic implications of impaired nuclear receptor function and dysregulated metabolism in Wilson's disease
  findings: []
- reference: DOI:10.1038/s41467-024-47001-4
  title: Diverse roles of the metal binding domains and transport mechanism of copper transporting P-type ATPases
  findings: []
- reference: DOI:10.1093/braincomms/fcae329
  title: Structural lesions and transcriptomic specializations shape gradient perturbations in Wilson disease
  findings: []
- reference: DOI:10.1152/physiol.00032.2025
  title: 'Copper in Human Health and Disease: Insights from Inherited Disorders'
  findings: []
- reference: DOI:10.1186/s12974-024-03178-5
  title: Aberrant copper metabolism and hepatic inflammation cause neurological manifestations in a mouse model of Wilson's disease
  findings: []
- reference: DOI:10.3389/fmed.2025.1673283
  title: 'The role of copper dysregulation in Wilson disease: an expert opinion'
  findings: []
- reference: DOI:10.3390/cells13141214
  title: Navigating the CRISPR/Cas Landscape for Enhanced Diagnosis and Treatment of Wilson's Disease
  findings: []
- reference: DOI:10.3390/ijms25094753
  title: 'Wilson Disease: Copper-Mediated Cuproptosis, Iron-Related Ferroptosis, and Clinical Highlights, with Comprehensive and Critical Analysis Update'
  findings: []
- reference: DOI:10.3390/ijms25126487
  title: The Role of Copper Overload in Modulating Neuropsychiatric Symptoms
  findings: []
- reference: DOI:10.3390/ijms25147545
  title: 'The Role of Glia in Wilson''s Disease: Clinical, Neuroimaging, Neuropathological and Molecular Perspectives'
  findings: []
- reference: DOI:10.1289/ehp.02110s5695
  title: Molecular mechanism of copper transport in Wilson disease
  findings: []
- reference: DOI:10.1007/s00428-004-1047-8
  title: Wilson disease
  findings: []
- reference: DOI:10.1136/gut.2005.087262
  title: 'Clinical presentation, diagnosis and long-term outcome of Wilson''s disease: a cohort study'
  findings: []
- reference: DOI:10.1016/B978-0-444-63625-6.00010-0
  title: 'Wilson disease'
  findings: []
- reference: DOI:10.1007/s10072-020-05013-0
  title: 'Neurological features and outcomes of Wilson''s disease: a single-center experience'
  findings: []
- reference: DOI:10.1097/MPG.0000000000003196
  title: 'Pediatric Wilson''s Disease'
  findings: []
- reference: DOI:10.1186/s13023-022-02245-5
  title: 'Wilson disease in Northern Portugal: a long-term follow-up study'
  findings: []
- reference: DOI:10.1007/s00198-017-4295-6
  title: 'Osteoporosis and bone mineral density in patients with Wilson''s disease: a systematic review and meta-analysis'
  findings: []
- reference: DOI:10.3390/jcm11143975
  title: 'Efficacy and Safety of Two Salts of Trientine in the Treatment of Wilson''s Disease'
  findings: []
- reference: DOI:10.1016/j.jhep.2023.04.007
  title: 'Neurological worsening in Wilson disease - clinical classification and outcome'
  findings: []