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Genetic Variants of PTPN2 Gene in Chinese Children with Type 1 Diabetes Mellitus

Hui Peng, Jiamei Li, Xiaoyun Chen, Xiao Zhou, Weiwei Zhu, Feng Li

(Department of Pediatrics, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China (mainland))

Med Sci Monit 2015; 21:2653-2658

DOI: 10.12659/MSM.893607

BACKGROUND: Several studies have reported the association of PTPN2 gene with type 1 diabetes mellitus (T1DM) in many populations but not in the Chinese Han population. Therefore, the goal of our study was to replicate the reported association between 2 single-nucleotide polymorphisms (SNPs; rs478582 and rs2542151) in the PTPN2 gene and T1DM in Chinese Han children.
MATERIAL AND METHODS: This case-control study included 141 Chinese Han children with T1DM and 282 healthy controls. Genetic variants of rs478582 and rs2542151 in PTPN2 gene were performed by PCR amplification followed by restriction fragment length polymorphism method.
RESULTS: No difference was observed in association of rs478582 in The PTPN2 gene and T1DM. The distribution of allele frequency of rs2542151 differed significantly between T1DM patients and healthy controls (OR, 0.6; 95%CI: 0.44 to 0.95; and P=0.024). Dominant model of rs254215 also was associated with T1DM (OR, 0.6; 95%CI: 0.40 to 0.96; and P=0.032). Younger age at onset in G carriers appeared to increase the risk for T1DM (P=0.030).
CONCLUSIONS: The findings suggested that rs2542151 SNP in The PTPN2 gene was associated with T1DM in Chinese Han children. Further studies with larger sample sizes involving gene-gene interactions are urgently needed.

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