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Protein tyrosine phosphatase receptor-type C exon 4 gene mutation distribution in an Italian multiple sclerosis
Clara Ballerini1, Eleonora Rosati, Marco Salvetti
1Department of Neurological and Psychiatric Sciences, University of Florence, Viale Pieraccini 6, 50134, Florence, Italy. c1ara.ballerini@unifi.it
Abstract:
In this study, we investigate the role of the C-->G mutation in position 77 of exon 4 of the protein tyrosine phosphatase receptor-type C (PTPRC) gene, coding for the CD45 molecule, for the development of multiple sclerosis (MS) in an Italian continental population. The PTPRC mutated genotype has been recently described as associated with MS in three different case-control studies carried out in German MS patients, whereas similar studies performed in the US and Swedish populations failed to demonstrate such an association. The C-->G transition in position 77 was found in a small number of Italian MS patients and in none of the matched group of healthy controls (Fisher exact test, P value=0.02). This finding suggests a role, in at least a group of patients, for the PTPRC mutation in genetic susceptibility to MS.
Insights
A specific mutation in the protein tyrosine phosphatase receptor-type C (PTPRC) gene was found in Italian multiple sclerosis (MS) patients but not in healthy controls. This suggests a potential role for this PTPRC mutation in MS genetic susceptibility.
Area of Science:
- Genetics
- Immunology
- Neurology
Background:
- The protein tyrosine phosphatase receptor-type C (PTPRC) gene, encoding the CD45 molecule, has been implicated in multiple sclerosis (MS) susceptibility.
- Previous studies reported an association between a specific PTPRC mutation and MS in German populations, but not in US or Swedish cohorts.
Purpose of the Study:
- To investigate the role of a C-->G mutation at position 77 of exon 4 in the PTPRC gene in the development of MS.
- To assess the association of this PTPRC mutation with MS in an Italian continental population.
Main Methods:
- Case-control study design.
- Genotyping analysis to detect the C-->G transition at position 77 of the PTPRC gene.
- Fisher exact test used for statistical analysis of mutation frequency.
Main Results:
- The PTPRC C-->G mutation at position 77 was identified in a small subset of Italian MS patients.
- This specific mutation was absent in the matched group of healthy Italian controls.
- The observed difference in mutation frequency was statistically significant (Fisher exact test, P value=0.02).
Conclusions:
- The findings suggest a potential role for the investigated PTPRC mutation in the genetic susceptibility to multiple sclerosis.
- This mutation may contribute to MS development in a specific patient subgroup within the Italian population.