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Updated: Aug 23, 2025

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Published on: August 8, 2022
Several genetic variants associated with systemic sclerosis in a Chinese Han population
Chenxi Liu1,2, Songxin Yan1, Haizhen Chen1,3
1Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Science, Beijing, 100730, China.
Background:
Systemic sclerosis (SSc) is a connective tissue disease with ethnic differences. Single-nucleotide polymorphisms (SNPs) in the ARID3A, CXCR5, and TNFSF8 genes have been reported to be associated with various autoimmune diseases. The aim of this study was to investigate the association between these SNPs and susceptibility to SSc in a Chinese Han population.
Methods:
A case-control study was conducted in 342 patients with SSc and 694 ethnically matched healthy controls. SNPs in ARID3A, CXCR5, and TNFSF8 were genotyped using a Sequenom MassArray iPLEX system, and allele association analyses were performed using the PLINK v1.90 software.
Results:
Our study demonstrated that the ARID3A rs10415976 G and CXCR5 rs77871618 T alleles were suggestively associated with patients with SSc (P = 0.049 and P = 0.024, respectively) and TNFSF8 rs1555457 T allele was strongly associated with SSc (P = 0.003). Patients carrying the ARID3A rs350146 TT and TNFSF8 rs1555457 TT genotypes had a significant increased risk of SSc (P = 0.03 and P = 0.004, respectively). Moreover, rs10415976, rs77871618, and rs1555457 were associated with SSc in an additive genetic model (P < 0.05). rs62132345 and rs1555457 were associated with SSc in the dominant genetic model (P < 0.05). rs350146 was associated with SSc in the recessive genetic model (P = 0.029).
Conclusions:
ARID3A rs10415976, ARID3A rs350146, and CXCR5 rs77871618 were suggestively associated with SSc and TNFSF8 rs1555457 was strongly associated with SSc in the Chinese Han population in this study. Key Points • This case-control study determined that ARID3A rs10415976, ARID3A rs350146 and CXCR5 rs77871618 were suggestively associated with SSc and TNFSF8 rs1555457 was strongly associated with SSc in the Chinese Han population. • The differences in these results compared with previous studies may be a result of ethnic and racial differences.
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