Abstract
Background: Osteoarthritis (OA) is a complex degenerative articular disease that has an ambiguous pathogeny because variant risk factors participate in the process of cartilage deterioration. Genetic factors may have a role in the onset and progression of OA. Objective: To investigate potential association between severity of knee OA (KOA) and Double von Willebrand factor A domains DVWA rs11718863 gene polymorphism. Methods: One hundred and twenty Iraqi patients diagnosed with KOA, aged (45 years and above) and sixty healthy people (control) at the same age range, with no family history of OA were evaluated at Al-Imamein Al-Kadhimein Medical City (Rheumatology Department). The degree of severity of KOA was assessed by clinical and radiographic assessment. DVWA rs11718863 genotyping was performed using DNA sequencing (Sanger’s method). Results: Two different genotypes wild homozygote (TT) genotype and heterozygote (AT) appeared by genotyping of DVWArs:11718863. Highly significant difference (p<0.001) was found in distribution of the two genotypes in the three study groupsl the genotype (TT) was more frequent in control group (95.0%). Also, high significant difference (p<0.001) was noted in the two alleles (A, T) frequencies between control group and KOA patients group giving odd ratio 6.437 with 95% confidence intervals of (1.93-21.42). Conclusion: Iraqi subjects carrying AT genotype of DVWA rs11718863 gene are mostly susceptible for developing of KOA and the allele A of Tyr169Asn polymorphism are more frequent in those patients indicating that allele A may be a risk factor of onset of this disease. Age and body mass index are considered risk factors of onset and progression of KOA. Keywords: Double von Willebrand factor A domains (DVWA), single nucleotide polymorphism (SNP), body mass index, Knee osteoarthritis, KOA Citation: Hasan NN, Alwasiti EA, Ahmed MH. Association of DVWA rs11718863 gene polymorphism with knee osteoarthritis in Iraqi patients. Iraqi JMS. 2022; 20(2): 207-216. doi: 10.22578/IJMS.20.2.7
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