Alzheimer's disease is one of the most common causes of dementia and is a neurodegenerative disease that occurs with memory loss, loss of language, thinking and problem-solving skills. In this study, it was aimed to reveal the relationship between Alzheimer's disease and the variable number tandem repeat (VNTR) polymorphism in the aggrecan () gene. Thus, it is thought that it will contribute to enlightenment about disease by contributing to the pathophysiology of Alzheimer's disease. A total of 203 people, including 102 patients diagnosed with Alzheimer's and 101 healthy individuals, were included in the study. Deoxyribonucleic acid (DNA) extraction was performed from the blood samples taken. The variable number tandem repeat (VNTR) polymorphism of the gene was determined using the Polymerase Chain Reaction (PCR) method. In our study, the 30 R, 31 R and 33 R alleles were the most repetitive alleles in patients and controls. 30 R, 31 R and shorter alleles were more common in patients than in the control group and were found to be statistically significant ( = 0.042). According to our results, 30 R and 31 R alleles of the VNTR polymorphism in the gene may be associated with Alzheimer's disease. In addition, having less than 30 repeat alleles increases the risk of the disease by 2,202 times. Our study is the first to investigate the relationship between gene VNTR polymorphism and Alzheimer's disease. Further studies are needed to definitively relate it.
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