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Nasopharyngeal carcinoma (NPC) is a multifactorial disease that is geographically endemic in the world. Indonesia population is about 225 million people having varied diversity ethnic and has the high incidence rate of NPC approximately 6.2 per 100,000 people per year. EBV infection has been shown to be consistent with the onset of NPC. The pathogenesis of NPC is more directly reflected by carcinoma-specific viral transcriptional activity at the site of primary tumor. Therefore, EBV infection in NPC is also reflected by the expression of EBV latent and lytic gene, particularly in the expression of mRNA LMP1 EBV as a biomarker for EBV latent infection. The aims of this study were to determine the relative expression of mRNA LMP1 EBV in undifferentiated NPC (NPC WHO-III) patient as a biomarker of tumour progressivity in NPC. The samples were the tissue biopsies formalin-fixed embedded paraffin (FFPE) of 28 undifferentiated NPC patients at Pathology Anatomy Departement, R.S.U.D. Prof. dr. Margono Soekarjo, Purwokerto. The relative expression of mRNA LMP1 EBV was determined by RT-qPCR technique and calculated by formula 2 -ΔCt . The relative expression of mRNA LMP1 EBV in undifferentiated NPCpatients on advanced staging was approximately start from 5,832.90 to 39,786.70. In undifferentiated NPC patients, the relative expression of mRNA LMP1 EBV in stadium IV (13.619,33 + 4902,3) increased of 1.5 times compared to stadium III (n = 2; 9.299,35 + 6178,9), however it was no significance differences statistically. Therefore, the relative expression of mRNA LMP1 EBV has a potensial biomarker of tumour progressivity in advanced staging undifferentiated NPC. Key word : relative expression of mRNA LMP1 EBV, FFPE tissue biopsy, tumor progressivity biomarker, Undierentiated NPC (NPC WHO-III)

journal biotek medisiana indonesia : the indonesian journal of biotechnology medicine (e-journal)

Ekspresi Relatif mRNA LMP1 Epstein-Barr Virus dari Jaringan Tumor Terfiksasi Formalin dalam Blok Parafin sebagai Biomarker Progresivitas Tumor pada Karsinoma Nasofaring Tidak Berdiferensiasi