PDCD1 genes may protect against extraocular manifestations in Chinese Han patients with Vogt-Koyanagi-Harada syndrome
2008

PDCD1 Genes and Vogt-Koyanagi-Harada Syndrome in Chinese Patients

Sample size: 536 publication Evidence: moderate

Author Information

Author(s): Meng Qianli, Liu Xiaoli, Yang Peizeng, Hou Shengping, Du Liping, Zhou Hongyan, Kijlstra Aize

Primary Institution: Zhongshan Ophthalmic Center, Sun Yat-sen University

Hypothesis

To analyze the potential association of programmed cell death 1 (PDCD1) with Vogt-Koyanagi-Harada (VKH) syndrome in a Chinese Han population.

Conclusion

PD-1.3 and PD-1.6 polymorphisms are not associated with the susceptibility to VKH syndrome, but PD-1.5 may be negatively associated with extraocular manifestations.

Supporting Evidence

  • Lower frequencies of the PD-1.5C genotype were observed in VKH patients with extraocular findings.
  • Genotype distributions in healthy controls were in Hardy-Weinberg equilibrium.
  • PD-1.3 and PD-1.6 polymorphisms were not associated with VKH syndrome susceptibility.

Takeaway

This study looked at genes that might affect a disease called VKH syndrome in Chinese people, finding that one gene might help prevent some symptoms.

Methodology

Genotyping of three SNPs in 247 VKH patients and 289 healthy controls using PCR-RFLP assay.

Potential Biases

Potential bias due to the selection of controls and the specific ethnic background of participants.

Limitations

The study only included Chinese Han patients, which may limit the generalizability of the findings.

Participant Demographics

247 VKH patients (109 female, 138 male) and 289 healthy controls (129 female, 160 male).

Statistical Information

P-Value

0.013

Confidence Interval

0.534–0.930

Statistical Significance

p<0.05

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