Modulation of age at onset in Huntington's disease and spinocerebellar ataxia type 2 patients originated from eastern India.

Abstract

To identify the genetic modifier(s) that might alter the age at onset in Huntington's disease (HD) we have analyzed variations in GluR6 kainate receptor (GluR6), CA150 gene, Delta2642 and polymorphic CCG repeat variation in huntingtin (htt) gene in 77 HD patients and normal individuals. In addition, variation in the RAI1 gene was analyzed in 30 spinocerebellar ataxia (SCA2) patients and normal individuals to show the possible influence on the age at onset. Multiple regression analysis indicated that variation in GluR6 and CCG repeat genotype might explain 6.2% and 3.1%, respectively, of the variability in the age at onset in HD. Similar analysis with SCA2 patients indicated that RAI1 might explain about 13% of the variability in the age at onset. Specific alleles in GluR6 and CA150 locus were only observed in HD patients.

• Authors: Biswanath Chattopadhyay, Subho Ghosh, Prasanta K Gangopadhyay, Shaymal K Das, T Roy, Krishna K Sinha, Dilip K Jha, Subhash C Mukherjee, Ambar Chakraborty, Bhim S Singhal, Anup K Bhattacharya, Nitai P Bhattacharyya
• Journal: Neuroscience letters (Neurosci Lett) Vol. 345 Issue 2 Pg. 93-6 (Jul 17 2003) ISSN: 0304-3940 [Print] Ireland
• PMID: 12821179 (Publication Type: Comparative Study, Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Gluk2 kainate receptor
• Receptors, Kainic Acid
• TCERG1 protein, human
• Trans-Activators
• Transcriptional Elongation Factors

Topics

• Adult
• Age of Onset
• Aged
• Aged, 80 and over
• Alleles
• Case-Control Studies
• Female
• Gene Deletion
• Gene Frequency
• Genotype
• Humans
• Huntington Disease (epidemiology, genetics)
• India (epidemiology)
• Linear Models
• Male
• Middle Aged
• Polymorphism, Genetic
• Receptors, Kainic Acid (genetics)
• Spinocerebellar Ataxias (epidemiology, genetics)
• Trans-Activators (genetics)
• Transcriptional Elongation Factors
• Trinucleotide Repeats (genetics)