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Year : 2019  |  Volume : 31  |  Issue : 4  |  Page : 804-812

Effects of interleukin-12 gene polymorphism on response to hepatitis B vaccination among hemodialysis Egyptian patients

1 Internal Medicine Department, Gastroenterology, Hepatology and Endoscopy Unit, Mansoura International Hospital, Mansoura, Egypt
2 Clinical Pathology Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt
3 Nephrology Department, Mansoura International Hospital, Mansoura, Egypt

Correspondence Address:
MD Mohammed A Mohammed
Internal Medicine, Gastroenterology, Hepatology and Endoscopy Unit, Faculty of Medicine, Mansoura University, Ahmad Maher Street, 6th October Street, Mansoura, 35511
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ejim.ejim_85_19

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Background Hepatitis B virus (HBV) infection is a major health problem among hemodialysis (HD) patients. Interleukin (IL)-12 gene polymorphisms may be associated with immune response variability to recombinant HBV vaccines. The aim was to determine the correlation between IL-12 gene polymorphism and hepatitis B surface-antibody (HBs-Ab) titer in response to HBV vaccine among HD Egyptian patients. Patients and methods Seventy patients receiving long-term HD and 20 age-matched and sex-matched healthy controls were enrolled. All participants were non-HBV vaccinated and seronegative for HBV and HIV. Recombinant HBV vaccine was given (three-dose scheduled). Thereafter, HBs-Ab titer and IL-12 gene polymorphism were evaluated 8 weeks after the last vaccination dose. Results There was no response (HBs-Ab<10 μIU/ml) in 20% of HD patients and 10% of the controls. HBs-Ab titers showed no significant correlation with duration of HD, BMI, serum albumin, hemoglobin, leucocytic count, parathyroid hormone level, or IL-12 gene polymorphism. Responders to vaccination had significantly lower transferrin saturation and significantly higher levels of urea reduction ratio, Kt/V and lymphopenia. IL-12B genotype frequency was as follows: AA (58.3 vs. 55.6%), AC (37.5%) and CC (4.2 vs. 0%) in responders of either HD or control participants, respectively (P>0.05 for all). Conclusion There was no significant association between IL-12B gene polymorphism and HBs-Ab response in Egyptian HD patients. In HD patients, lymphocytopnea, diabetes mellitus (DM), high transferrin saturation and inefficient HD were associated with HBV vaccine hyporesponsiveness.

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