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Wilson's disease
Anand Pandit1, Ashish Bavdekar, Sheila Bhave
1Department of Pediatrics, KEM Hospital, Pune, India. kemhrc@vsnl.com
Insights
Wilson's disease (WD) is a genetic disorder affecting copper metabolism, presenting diverse symptoms in children. Early diagnosis and lifelong treatment, including copper chelation and monitoring, are crucial for a good outcome.
Area of Science:
- Genetics
- Hepatology
- Pediatrics
Background:
- Wilson's disease (WD) is a significant inherited copper metabolism disorder in Indian children.
- Clinical manifestations are highly variable, encompassing liver, neurological, psychiatric, and other systemic issues.
- Accurate diagnosis in India is challenging due to limited availability of hepatic copper estimation and potential complications with liver biopsy.
Purpose of the Study:
- To highlight the diagnostic challenges and therapeutic strategies for Wilson's disease in the Indian pediatric population.
- To emphasize the importance of early detection and comprehensive management for improving patient outcomes.
- To discuss the role of genetic testing in the diagnosis of WD.
Main Methods:
- Clinical presentation review and diagnostic criteria assessment.
- Evaluation of diagnostic tests including hepatic copper, ceruloplasmin, urinary copper, and Kayser-Fleischer rings.
- Discussion of therapeutic interventions: copper chelation (D-Penicillamine, Trientine) and maintenance therapy (Zinc).
Main Results:
- Hepatic copper estimation is the gold standard but often unavailable; diagnosis relies on a combination of clinical signs and biochemical markers.
- Early diagnosis and consistent lifelong therapy are associated with better outcomes.
- Molecular genetics offers potential for improved diagnostic accuracy.
Conclusions:
- Wilson's disease requires a high index of suspicion and a tailored diagnostic approach in India.
- Lifelong management involving medical therapy, regular monitoring, and patient support is essential.
- Screening of siblings and genetic analysis are vital for early intervention and disease control.
Abstract:
Wilson's disease (WD), an inborn error of copper (Cu) metabolism, is now one of the leading liver diseases in children in India. The clinical presentation can be extremely varied viz.,--all forms of acute and chronic liver disease, minimal to severe neurological disease, psychiatric problems, bony deformities, hemolytic anemia and endocrine manifestations. A high index of suspicion is necessary along with a judicious battery of investigations for diagnosis. Hepatic copper estimation is the most reliable test but is not easily available in India. Liver biopsy may not be possible because of bleeding problems and histological features are often not diagnostic of WD. In the absence of hepatic Cu, a low ceruloplasmin, high 24 hour urinary copper and presence of KF rings aid in making the diagnosis. The mainstay of initial therapy is Cu-chelators like D-Penicillamine, and Trientine for reduction in body copper to sub-toxic levels. Subsequent maintenance therapy is necessarily lifelong with D-Penicillamine, Trientine or Zinc. Children on therapy must be monitored regularly for response, side-effects, compliance and rehabilitation. Response to therapy may be unpredictable, but acute and early presentations like fulminant hepatic failures have a poor outcome. All siblings must be screened for WD as early diagnosis and treatment result in a good outcome. The identification of the WD gene on chromosome 13 has led to the possible use of molecular genetics (haplotype and mutational analyses) in the diagnosis of WD. Parent groups/associations must take active part in holistic management of WD.