PMID- 24641422 OWN - NLM STAT- MEDLINE DCOM- 20141118 LR - 20190606 IS - 2476-762X (Electronic) IS - 1513-7368 (Linking) VI - 15 IP - 4 DP - 2014 TI - Low level of TERC gene amplification between chronic myeloid leukaemia patients resistant and respond to imatinib mesylate treatment. PG - 1863-9 AB - The amplification of telomerase component (TERC) gene could play an important role in generation and treatment of haematological malignancies. This present study was aimed to investigate copy number amplification status of TERC gene in chronic myeloid leukaemia (CML) patients who were being treated with imatinib mesylate (IM). Genomic DNA was extracted from peripheral blood of CML-IM Resistant (n=63), CML-IM Respond (n=63) and healthy individuals (n=30). TERC gene copy number predicted (CNP) and copy number calculated (CNC) were determined based on Taqman(R) Copy Number Assay. Fluorescence in situ hybridization (FISH) analysis was performed to confirm the normal signal pattern in C4 (calibrator) for TERC gene. Nine of CML patients showed TERC gene amplification (CNP=3), others had 2 CNP. A total of 17 CML patients expressed CNC>2.31 and the rest had 2.31>CNC>1.5. TERC gene CNP value in healthy individuals was 2 and their CNC value showed in range 1.59-2.31. The average CNC TERC gene copy number was 2.07, 1.99 and 1.94 in CML- IM Resistant patients, CML-IM Respond and healthy groups, respectively. No significant difference of TERC gene amplification observed between CML-IM Resistant and CML-IM Respond patients. Low levels of TERC gene amplification might not have a huge impact in haematological disorders especially in terms of resistance towards IM treatment. FAU - Mohamad Ashari, Zaidatul Shakila AU - Mohamad Ashari ZS AD - Human Genome Center, School of Medical Sciences, Health Campus, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia E-mail : ssarina@kck.usm.my. FAU - Sulong, Sarina AU - Sulong S FAU - Hassan, Rosline AU - Hassan R FAU - Husin, Azlan AU - Husin A FAU - Sim, Goh Ai AU - Sim GA FAU - Abdul Wahid, S Fadilah AU - Abdul Wahid SF LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Thailand TA - Asian Pac J Cancer Prev JT - Asian Pacific journal of cancer prevention : APJCP JID - 101130625 RN - 0 (Benzamides) RN - 0 (Piperazines) RN - 0 (Pyrimidines) RN - 0 (telomerase RNA) RN - 63231-63-0 (RNA) RN - 8A1O1M485B (Imatinib Mesylate) RN - EC 2.7.7.49 (Telomerase) SB - IM MH - Benzamides/*therapeutic use MH - Cross-Sectional Studies MH - DNA Copy Number Variations MH - Drug Resistance, Neoplasm/genetics MH - Gene Amplification/*genetics MH - Gene Dosage/*genetics MH - Humans MH - Imatinib Mesylate MH - In Situ Hybridization, Fluorescence MH - Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy/*genetics MH - Piperazines/*therapeutic use MH - Pyrimidines/*therapeutic use MH - RNA/*genetics MH - Telomerase/*genetics EDAT- 2014/03/20 06:00 MHDA- 2014/11/19 06:00 CRDT- 2014/03/20 06:00 PHST- 2014/03/20 06:00 [entrez] PHST- 2014/03/20 06:00 [pubmed] PHST- 2014/11/19 06:00 [medline] AID - 10.7314/apjcp.2014.15.4.1863 [doi] PST - ppublish SO - Asian Pac J Cancer Prev. 2014;15(4):1863-9. doi: 10.7314/apjcp.2014.15.4.1863.