Detection method: allelic discrimination

This in vitro diagnostic kit is intended for detection of TPMT*2, TPMT*3A, TPMT*3B and TPMT*3C in TPMT gene in human genomic DNA by realtime PCR method (allelic discrimination). The kit allows the determination of haplotypes TPMT*2, TPMT*3A, TPMT*3B and TPMT*3C in homozygous or heterozygous form. The kit does not distinguish genotype *1/*3A (two mutations in cis form) from 3B*/*3C (the incidence of the composite heterozygote *3B/3C* is unlikely in Caucasians).

Clinical implications of the CE IVD kit

Thiopurine S-methyltransferase (TPMT) is an essential enzyme for biodegradation of thiopurines. Antitumor drugs thioguanine and mercaptopurine, related to thiopurines, are used especially in hematooncology. Another thiopurine, azathioprine, is an immunosuppressive agent intended for the treatment of autoimmune diseases and prevention of transplant rejection.

The thiopurine drug side effects include neurotoxicity, hepatotoxicity, myelosuppression, mucositis and others. The biotransformation activity of the TPMT enzyme may be reduced due to the presence of the single nucleotide polymorphisms in the coding region of the TPMT gene. The most studied deficient alleles are TPMT*, TPMT*3A, TPMT*3B and TPMT*3C. Limited thiopurine biotransformation leads to the escalation of side effects of treatment. Upon detection of heterozygote it is recommended to reduce the dose of the drug to 30-70%, in the case of the homozygote and the composite heterozygote it is better to choose an alternative treatment.

Parameters of the diagnostic kit

  • ready-to-use assay
  • sample concentration 1-100 ng/µl
  • positive and negative controls included
  • FAM and HEX channels detection
  • identical amplification profile as gb HEMO, gb GENETIC, gb PHARM kits
Cat. No. Product No. of reactions Price
3217-025 gb PHARM TPMT 25
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3217-050 gb PHARM TPMT 50
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1 CE IVD real-time PCR kit contains reagents to provide 25 or 50 PCR reactions (20 μl volume of each reaction).

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    About product

    General Terms and Conditions

    Validated for:

    ABI 7500/7500 Fast (ABI)

    AriaMx (Agilent Technologies)

    CFX96/96Touch (Bio-Rad)

    iCycler iQ5 (Bio-Rad)

    Light Cycler 480/Cobas z480 (Roche Diagnostics)

    MIC (BMS)

    RG 3000 (Corbett Research)

    RG 6000/Q (Corbett Research/Qiagen)

    Select further cyclers

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