Development of TPMT Gene Analysis using the Multiplex ARMS-PCR Technique in Hematology and Oncology Laboratory, Siriraj Hospital

Authors

  • Preeyanun Siraprapapat Faculty of Medicine Siriraj Hospital, Mahidol University
  • Kochpinchon Chansing Faculty of Medicine Siriraj Hospital, Mahidol University
  • Jassada Buaboonnam Faculty of Medicine Siriraj Hospital, Mahidol University

DOI:

https://doi.org/10.14456/jmu.2022.2

Keywords:

TPMT, Thiopurine S-methyltransferase, 6-mercaptopurine

Abstract

         The Hematology and Oncology Division, Department of Pediatrics had provided the analysis of Thiopurine S-methyltransferase (TPMT) variants using Polymerase Chain Reaction-Restriction Fragment Length Polymorphism (PCR-RFLP) method since 2004 and the prevalence of such variant was 4.27%. However, this technique seemed to be time-consuming and utilize several reagents.

        

We, therefore, developed the new analytic method which was considered to be more time-saving and economical using multiplex Amplification Refractory Mutation System-Polymerase Chain Reaction (ARMS-PCR) to determine 4 variants of TPMT gene namely *2 (238G>C), *3A (460G>A, 719A>G), *3B (460G>A) and *3C (719A>G). The results showed that there were 150 samples randomized from all 749 samples to determine TPMT polymorphism. Of all samples, the multiplex ARMS-PCR technique yielded the complete concordant results to PCR-RFLP. The multiplex ARMS-PCR technique effectively reduced the cost and operation time compared to PCR-RFLP.

         In conclusion, the multiplex ARMS-PCR method provided the concordant results and appeared to be cost and time economical. Additionally, this method seemed to prevent the potential errors related to restriction enzymes during the process of RFLP.

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Published

2022-04-12

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Research Articles