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. 2021 Apr;9(4):e1648.
doi: 10.1002/mgg3.1648. Epub 2021 Mar 9.

Association of the STAT4, CDKN1A, and IRF5 variants with risk of lupus nephritis and renal biopsy classification in patients in Vietnam

Trung Dung Nghiem  1 , Gia Tuyen Do  1 , Long Hoang Luong  2 , Quy Linh Nguyen  2 , Ha Viet Dang  1 , Anh Nguyen Viet  1 , Thuy Thu Nguyen  2 , Van Khanh Tran  2 , Thanh Van Ta  2 , Thinh Huy Tran  2
Affiliations

Association of the STAT4, CDKN1A, and IRF5 variants with risk of lupus nephritis and renal biopsy classification in patients in Vietnam

Trung Dung Nghiem et al. Mol Genet Genomic Med. 2021 Apr.

Abstract

Background: Lupus nephritis is a common complication of systemic lupus erythematosus (SLE, OMIM #15200) in the Asian population and a main contributor to mortality and morbidity. In this study, we evaluate the variants on three genes STAT4, CDKN1A, and IRF5 and their association with lupus nephritis.

Method: One hundred fifty-two SLE patients with confirmed lupus nephritis (through biopsy) and 76 healthy controls were recruited. Genotyping of SNPs on three gene STAT4, CDKN1A, and IRF5, phenotypic, and laboratory assessment were performed; renal biopsy and classification were carried out for the patient group.

Results: Carriers of rs7582694 C alleles on STAT4 have higher risk of lupus nephritis (OR 2.0; 95% CI [1.14, 3.19]; p = 0.015), at higher risk of hematuria and higher serum level of dsDNA antibodies compared to controls (p < 0.05) and were more likely to have nephrotic histopathology grading of class III or higher. No association was observed for CDKN1A; and no variation was observed for the IRF5 gene in both the study and control group.

Conclusion: This study investigates the relationship between STAT4, CDKN1A, and IRF5 gene and SLE in a Vietnamese patient population. Patients with the C allele (STAT4) in rs7582694 were associated with a more severe disease phenotype.

Keywords: CDKN1A; IRF5; STAT4; SLEDAI; risk factor; systemic lupus erythematous.

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Conflict of interest statement

The authors declare no conflict of interest.

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