Prognostic Value of NTCP p.Ser267Phe Variant in Patients with Chronic Hepatitis B

Aim: In this study, the aim is to detect polymorphisms in the gene encoding the sodium taurocholate cotransporting polypeptide (NTCP), the functional receptor for hepatitis B virus (HBV) and hepatitis D virus. Materials and Methods: The study included a total of 293 patients, with 150 diagnosed with chronic hepatitis B (CHB) and 143 undergoing liver parenchyma biopsy procedures due to different clinical indications. Total DNA was isolated from liver biopsy samples. The TaqMan SNP genotyping method was used to determine the rs2296651 polymorphism in the SLC10A1 gene, which leads to the NTCP S267F variation. Results: In patients with CHB and the control group, the NTCP-interacting domain was highly conserved, and no variation of the SNP rs2296651 in the SLC10A1 gene leading to the NTCP S267F variation was detected in any of the patients. Conclusion: It was thought that in patients with CHB, the impact of the NTCP S267F variation on the progression of HBV-associated diseases and its influence on the therapeutic efficacy of anti-viral agents targeting NTCP blockade may be limited.