Correlation between Vitamin D Receptor Gene FOKI and BSMI Polymorphisms and the Susceptibility to Pulmonary Tuberculosis in an Indonesian Batak-ethnic Population

Bintang Y.M. Sinaga, Muhammad Amin, Yahwardiah Siregar, Sori M Sarumpaet

Abstract


Aim: to explore the role of FokI and BsmI polymorphisms the VDR gene in the susceptibility to pulmonary tuberculosis (PTB) in an Indonesian Batak ethnic population. Methods: matched case-control study was conducted on 76 PTB patients and 76 healthy normal control. Genetic polymorphisms of Vitamin D Receptor (VDR) gene were analysed using PCR-RFLP. Results: the frequencies of FokI genotypes were FF 35.5%, Ff 55.3%, ff 9.2% for PTB patients and FF 39.5%, Ff 44.7.% and ff 15.8% for normal control. The BsmI genotypes frequencies were BB 0%, Bb 68.4%, bb 31.6% for TB patients and BB 2.6%, Bb 23.7% and bb 73.7% for control. There was no significant association between FokI genotype and PTB (OR 1.39, 95% CI: 0.69-2.77 for Ff genotype and OR 0.64, 95% CI: 0.22-1.86 for ff genotype). There was a significant association between BsmI genotype and PTB; the bb genotype was associated with a decreased risk to PTB (OR 0.22, 95% CI: 0.11-0.45). Conclusion: in Indonesian Batak ethnic population, there was no association between FokI polymorphism of VDR gene with host susceptibility to PTB. There was a significant association between BsmI polymorphism of VDR gene; bb genotype was associated with a decreased risk to PTB.

Key words: pulmonary tuberculosis, polymorphisms, vitamin D receptor gene, Batak, Indonesia


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