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Updated: Jul 20, 2026
08:16
Comparative Lesions Analysis Through a Targeted Sequencing Approach
Published on: November 5, 2019
Ctla4 and multiple sclerosis in the Italian population
G Malferrari1, A Stella, E Monferini
1Centre for Bio-Molecular Interdisciplinary Studies and Industrial Applications, University of Milan, Milan, Italy.
Experimental and Molecular Pathology
|December 15, 2004
Summary
Genetic variations in the CTLA4 gene may influence susceptibility to multiple sclerosis (MS). A specific combination of CTLA4 gene polymorphisms was found more frequently in Italian MS patients, suggesting a role in disease risk.
Area of Science:
- Immunogenetics
- Neuroimmunology
Background:
- Cytotoxic T-lymphocyte-associated protein 4 (CTLA4) is a key negative regulator of immune responses.
- Genetic variations in immune regulatory genes like CTLA4 are implicated in autoimmune disease susceptibility.
- Multiple sclerosis (MS) is a complex autoimmune disease affecting the central nervous system.
Purpose of the Study:
- To investigate the association between two CTLA4 gene polymorphisms (+49 A/G and -318 C/T) and susceptibility to sporadic MS.
- To analyze single-locus and combined effects of these polymorphisms in an Italian population.
Main Methods:
- Genotyping of CTLA4 +49 A/G and -318 C/T polymorphisms using direct DNA sequencing.
- Comparison of allelic and genotypic frequencies between sporadic MS patients and healthy controls from Italy.
Main Results:
- No significant differences in single-locus allelic or genotypic frequencies for either CTLA4 polymorphism were observed between MS patients and controls.
- A specific combination of alleles (T/G) at the two studied CTLA4 loci was found to be significantly more frequent in MS patients compared to controls.
Conclusions:
- While individual CTLA4 polymorphisms may not confer MS risk in the Italian population, a specific combined allelic pattern suggests a potential role in MS susceptibility.
- Further research is warranted to elucidate the functional impact of this CTLA4 allelic combination on immune regulation and MS pathogenesis.
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