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The TRUPCR® TPMT Mutation Detection Kit is a CE-IVD certified in vitro diagnostic solution designed for the detection of clinically relevant TPMT gene polymorphisms. TPMT (thiopurine S-methyltransferase) is essential in metabolizing thiopurine drugs, including azathioprine, mercaptopurine, and thioguanine. Variations in TPMT activity can cause serious adverse reactions to these drugs, especially myelosuppression. This kit allows clinicians to identify four key SNPs associated with TPMT deficiency in a single PCR run, using DNA extracted from whole blood, bone marrow, or FFPE samples. With optimized sensitivity, internal controls, and broad instrument compatibility, the TPMT Mutation Detection Kit supports personalized medicine by helping tailor thiopurine treatment to individual genetic profiles, improving patient outcomes and reducing risk.
TPMT (thiopurine S-methyltransferase) is an enzyme that plays a crucial role in the metabolism of thiopurine medications. These drugs are widely prescribed in treating leukemia, autoimmune disorders, and inflammatory bowel diseases such as Crohn’s and ulcerative colitis. TPMT helps to inactivate these drugs, preventing accumulation to toxic levels. Genetic variations in the gene can significantly reduce or eliminate enzyme activity, increasing the risk of severe toxicity in patients receiving standard thiopurine doses.
Genetic variants in the TPMT gene affect the enzyme’s ability to metabolize thiopurines. The four most common and clinically significant polymorphisms—c.238G>C, c.460G>A, c.626-1G>A, and c.719A>G—are associated with reduced or absent enzyme activity. Patients with low or no TPMT function are at high risk for developing myelosuppression and other life-threatening complications during thiopurine therapy. Identifying these mutations before initiating treatment is vital for adjusting dosage or selecting alternative medications.
The TRUPCR® TPMT Mutation Detection Kit is a robust, easy-to-use solution for the qualitative detection of four key TPMT gene variants. Designed as a CE-IVD approved real-time PCR assay, this kit provides reliable results using minimal DNA input. It is suited for a variety of clinical laboratory workflows and is validated across multiple sample types, including fresh blood, bone marrow, and FFPE tissues.
The assay utilizes allele-specific amplification via ARMS PCR. Each SNP is detected in a multiplex reaction using fluorescent probes labeled with FAM, HEX, and TEXAS RED. TEXAS RED serves as the internal reference to ensure amplification fidelity, while FAM/HEX detect specific mutations. The internal reference region is from a stable segment of the TPMT gene without known mutations. The workflow includes sample preparation, PCR setup with pre-mixed reagents, and real-time analysis using standard PCR instruments. Results are interpreted visually via amplification curves and are ready in approximately 90 minutes.
TPMT testing has become a standard practice in many healthcare settings, particularly in oncology and gastroenterology. The ability to predict adverse drug reactions to thiopurines enhances patient safety and helps clinicians optimize therapeutic strategies. For patients with intermediate TPMT activity, dosage can be safely reduced. For those with no activity, alternative therapies can be selected. This personalized approach minimizes hospitalizations, improves treatment adherence, and enhances overall outcomes. The TRUPCR® TPMT Mutation Detection Kit supports these decisions with accurate, reproducible results.
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