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  • Title: NA1/NA2 heterozygote of Fcgr3b is a risk factor for progression of IgA nephropathy in Chinese.
    Author: Xu G, He Q, Shou Z, Wang H, Zhang X, Wang Y, Chen Y, Chen J.
    Journal: J Clin Lab Anal; 2007; 21(5):298-302. PubMed ID: 17847104.
    Abstract:
    Several studies have identified FcgRIIIb (Fcgr3b) polymorphisms that determine susceptibility to autoimmune diseases such as systemic lupus erythematosus and rheumatoid arthritis. The objective of the study was to clarify whether Fcgr3b allele polymorphism influence susceptibility to immunoglobulin A nephropathy (IgAN), clinical features or severity in patients with IgAN. Deoxyribonucleic acid (DNA) fragments were amplified by polymerase chain reaction (PCR) using genomic DNA from 172 unrelated, healthy blood donors and 128 IgAN patients in our Kidney Disease Centre. The present findings showed that Fcgr3b genotype influenced the disease susceptibility and severity of IgAN, although Fcgr3b polymorphism did not affect the age of the disease onset. We found that the genotype frequency of Fcgr3b heterozygote NA1/NA2 in IgAN patients in Chinese significantly higher than that of healthy donors. Furthermore, higher genotype frequency of NA1/NA2 was found also in IgAN patients with glomerulosclerosis or crescent formation than those without it. NA1/NA2 heterozygote of Fcgr3b is a risk factor for progression of IgA nephropathy in Chinese.
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