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Neurological deterioration in late infantile neuronal ceroid lipofuscinosis
S Worgall1, M V Kekatpure, L Heier
1Department of Genetic Medicine, Weill Medical College of Cornell University, New York, NY 10021, USA. geneticmedicine@med.cornell.edu
Insights
The Weill Cornell scale better assesses late infantile neuronal ceroid lipofuscinosis (LINCL) progression than the modified Hamburg scale. MRI measurements also correlate with disease severity, aiding therapeutic evaluations.
Area of Science:
- Neurology
- Pediatric Neurology
- Neuroscience
Background:
- Late infantile neuronal ceroid lipofuscinosis (LINCL) is a severe neurodegenerative disorder.
- It affects the brain and retina, beginning in early childhood.
- Accurate assessment tools are crucial for monitoring disease progression.
Purpose of the Study:
- To compare the efficacy of two rating scales for assessing LINCL severity.
- To evaluate the correlation between CNS imaging findings and disease progression.
- To determine the utility of these tools for therapeutic strategy evaluation.
Main Methods:
- Analysis of 32 assessments from 18 children with LINCL.
- Utilized neurologic, ophthalmologic, and CNS imaging (MRI, MRS) data.
- Compared a modified Hamburg LINCL scale with the newly developed Weill Cornell LINCL scale.
Main Results:
- The Weill Cornell scale showed a stronger correlation with age and disease duration than the modified Hamburg scale.
- No significant differences in scale ratings were found for common CLN2 mutations.
- MRI and MRS measurements correlated with age and disease duration, and better with the Weill Cornell scale.
Conclusions:
- The Weill Cornell LINCL scale and specific MRI measurements are valuable for assessing LINCL severity and progression.
- These tools can aid in evaluating new therapeutic interventions for LINCL.
- Further research can refine these methods for clinical application.
Background:
Late infantile neuronal ceroid lipofuscinosis (LINCL) is associated with progressive degeneration of the brain and retina starting in early childhood.
Methods:
Thirty-two individual neurologic, ophthalmologic, and CNS imaging (MRI and MRS) assessments of 18 children with LINCL were analyzed. Disease severity was followed by two rating scales, one previously established but modified to solely assess the brain and exclude the retinal disease (modified Hamburg LINCL scale), and a newly developed scale, with expanded evaluation of the CNS impairment (Weill Cornell LINCL scale).
Results:
For the 18 children, the Weill Cornell scale yielded a closer correlation with both age and time since initial clinical manifestation of the disease than did the modified Hamburg scale. There were no significant differences as a function of age or time since initial manifestation of the disease in the rating scales among the most frequent CLN2 mutations (G3556C, 56% of all alleles or C3670T, 22% of all alleles). Measurements of cortical MRS N-acetyl-aspartate content, MRI ventricular, gray matter and white matter volume, and cortical apparent diffusion coefficient correlated to a variable degree with the age of the children and the time since initial clinical manifestation of the disease. All imaging measurements correlated better with the Weill Cornell CNS scale compared to the modified Hamburg LINCL scale.
Conclusion:
The data suggest that the Weill Cornell late infantile neuronal ceroid lipofuscinosis (LINCL) scale, together with several of the MRI measurements, may be useful in the assessment of severity and progression of LINCL and for the evaluation of novel therapeutic strategies.
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