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Quantitative susceptibility mapping shows higher deep gray matter alterations in Wilson's disease compared to healthy controlsNew scan findings show brain changes in Wilson's disease patients compared to healthy people

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Key Takeaway
Note that QSM reveals higher deep gray matter susceptibility in neurological Wilson's disease compared to healthy controls.

A meta-analysis searched PubMed, Embase, and Web of Science up to September 2025 to assess QSM alterations in deep gray matter. The study included 325 patients with Wilson's disease (WD) and 254 healthy controls (HCs). QSM measures magnetic susceptibility, which reflects iron and myelin content, often altered in neurodegenerative conditions.

In neurological WD patients, susceptibility was significantly higher than in HCs across all examined deep gray matter structures. Specifically, the caudate nucleus showed a mean difference (MD) of 33.92 (95% CI: 18.14-49.70, p < .001). The putamen exhibited an MD of 48.42 (95% CI: 29.66-67.17, p < .001), while the globus pallidus showed an MD of 62.24 (95% CI: 39.74-84.73, p < .001). The thalamus, red nucleus, and dentate nucleus also demonstrated statistically significant increases in susceptibility compared to HCs.

When comparing onset types, neurological-onset WD patients displayed higher susceptibility in the caudate, putamen, and thalamus compared to hepatic-onset WD patients. Conversely, hepatic-onset WD patients showed milder increases in susceptibility in the globus pallidus, red nucleus, and dentate nucleus relative to HCs. No adverse events, serious adverse events, or discontinuations were reported, as tolerability data were not provided. The study did not report funding sources or conflicts of interest.

Limitations include the observational nature of the imaging data, which precludes causal inference regarding disease progression. The absence of reported safety data and the heterogeneity of clinical presentations in WD warrant caution. While QSM alterations correlate with disease phenotype, the clinical relevance for routine monitoring or therapeutic decision-making remains uncertain. Further prospective studies are needed to establish the role of QSM in Wilson's disease management.

Researchers combined data from multiple studies to examine brain differences in Wilson's disease. They used a specific MRI method called quantitative susceptibility mapping to measure signals in deep gray matter regions. The group included 325 individuals with Wilson's disease and 254 healthy controls for comparison. The search for these studies was completed in September 2025 using major medical databases.

The analysis revealed that people with neurological Wilson's disease had higher susceptibility signals in the caudate, putamen, globus pallidus, thalamus, red nucleus, and dentate nucleus compared to healthy controls. When comparing neurological-onset Wilson's disease to hepatic-onset forms, the neurological group also showed higher susceptibility in the caudate, putamen, and thalamus. People with hepatic-onset disease showed milder increases in some areas compared to healthy controls.

These results suggest that quantitative susceptibility mapping can detect specific brain changes in Wilson's disease. The study did not report any safety concerns or adverse events because it analyzed existing imaging data rather than testing a new treatment. Readers should understand that this is an observational analysis linking brain signals to disease type. More research is needed to determine if these findings can help diagnose the disease earlier or guide treatment decisions in clinical practice.

What this means for you:
This study links higher MRI signals to Wilson's disease but needs more research to help patient care.

Study Details

Study typeMeta analysis
EvidenceLevel 1
PublishedApr 2026
View Original Abstract ↓
Quantitative susceptibility mapping (QSM) enables assessment of brain metal deposition. This meta-analysis evaluated QSM alterations in Wilson's disease (WD). PubMed, Embase, and Web of Science were searched up to September 2025 for studies reporting QSM measurements in neurological or hepatic WD and healthy controls (HCs). Twelve studies were included (325 WD, 254 HCs). Neurological WD showed higher susceptibility than HCs in the caudate (mean difference [MD] = 33.92, 95% CI: 18.14-49.70, p < .001), putamen (MD = 48.42, 95% CI: 29.66-67.17, p < .001), globus pallidus (MD = 62.24, 95% CI: 39.74-84.73, p < .001), thalamus (MD = 15.15, 95% CI: 10.15-20.15, p < .001), red nucleus (MD = 30.25, 95% CI: 12.57-47.93, p < .001), and dentate nucleus (MD = 16.65, 95% CI: 2.52-30.78, p = .02). Compared with hepatic-onset WD, neurological presentations showed higher susceptibility in the caudate nucleus (MD = 23.45, 95% CI: 1.17-45.73, p = .04), putamen (MD = 43.20, 95% CI: 2.62-83.78, p = .04), and thalamus (MD = 11.11, 95% CI: 7.53-14.69, p < .001). Hepatic-onset WD showed milder increases versus HCs in the globus pallidus (MD = 18.13, 95% CI: 4.42-31.85, p = .01), red nucleus (MD = 16.87, 95% CI: 12.11-21.63, p < .001) and dentate nucleus (MD = 11.61, 95% CI: 8.28-14.95, p < .001). QSM reveals marked susceptibility elevations in neurological WD and mild changes in hepatic WD. TRIAL REGISTRATION: CRD420251232999, https://www.crd.york.ac.uk/PROSPERO/view/CRD420251232999.
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