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Lab Test

DPD Gene Mutations

Dihydropyrimidine dehydrogenase (DPD) is an enzyme that plays a crucial role in the breakdown of certain medications, including the chemotherapy drug 5-Fluorouracil (5-FU). Some individuals have genetic mutations in the gene that codes for DPD, causing reduced enzyme activity. This can lead to severe toxicity when treated with standard doses of 5-FU, as the drug is not broken down and eliminated from the body efficiently. Testing for DPD gene mutations before initiating 5-FU chemotherapy helps in tailoring the dose to minimize the risk of toxicity.

  • Test Name DPD Gene Mutations (5-FU toxicity)
  • Sample Type Blood
  • Preparations Required No specific preparation is required before providing a blood sample.
  • Report Time 8 days

5-Fluorouracil is a chemotherapy drug used in the treatment of various cancers, including colon, stomach, breast, and head and neck cancers. It is crucial to ensure that patients receiving 5-FU have adequate DPD enzyme activity to metabolize the drug and prevent severe side effects.

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Frequently Asked Questions

The DPD gene mutation test is a genetic test that detects mutations in the gene coding for the Dihydropyrimidine dehydrogenase enzyme. This enzyme is responsible for breaking down certain chemotherapy drugs like 5-Fluorouracil (5-FU). A mutation in the DPD gene can lead to reduced enzyme activity and increase the risk of 5-FU toxicity.

The test is important because individuals with DPD gene mutations have a higher risk of developing severe side effects when treated with 5-FU. By identifying these mutations before treatment, healthcare providers can adjust the dosage of the drug or choose an alternative treatment to minimize the risk of toxicity.

The test is performed using a blood sample. DNA is extracted from the blood and analyzed for mutations in the DPD gene.

Patients who are candidates for chemotherapy treatment with drugs that are metabolized by the DPD enzyme, such as 5-Fluorouracil, should be tested for DPD gene mutations. It's also advisable for individuals with a family history of DPD deficiency.

If mutations are detected in the DPD gene, this indicates that the individual has reduced DPD enzyme activity and is at an increased risk for toxicity if treated with standard doses of 5-FU. The healthcare provider may adjust the dosage or choose an alternative treatment.

Symptoms of 5-FU toxicity can include severe nausea, vomiting, diarrhea, mouth sores, low blood cell counts, and in extreme cases, life-threatening infections.

Yes, individuals can have DPD gene mutations without showing any symptoms until they are exposed to drugs metabolized by the DPD enzyme, such as 5-FU.

The test involves drawing a blood sample, which carries minimal risks, such as slight pain or bruising at the puncture site. There are no side effects associated with the test itself.

Yes, DPD gene mutations are inherited in an autosomal recessive pattern, meaning that an individual must inherit two copies of the mutated gene (one from each parent) to have reduced DPD enzyme activity.

Yes, DPD is involved in the metabolism of several other drugs. The test can also provide information on how an individual might respond to other medications metabolized by DPD.

If you have DPD gene mutations, it is critical to inform your healthcare provider, especially if you are undergoing chemotherapy. Your provider may adjust the dosage of medications or choose different medications that do not rely on DPD for metabolism.

Treatment for 5-FU toxicity includes supportive care to manage symptoms and may involve dose adjustments or discontinuation of the drug.

Yes, there are alternative chemotherapy drugs and treatment options available that do not rely on DPD for metabolism. A healthcare provider will discuss these options with patients who have DPD gene mutations.

Testing for DPD gene mutations can be done even if you have not been treated with 5-FU. If you have a family history of DPD deficiency or are about to undergo chemotherapy, talk to your healthcare provider about the DPD gene mutation test.

You should consult an oncologist if you are undergoing chemotherapy. Additionally, consulting a genetic counselor to understand the implications of DPD gene mutations is beneficial.

Being aware of DPD gene mutations is vital for those undergoing chemotherapy treatment with drugs metabolized by the DPD enzyme. Tailoring the treatment based on the genetic makeup can reduce the risk of severe side effects and improve the overall outcome of the cancer treatment. It is important for patients and healthcare providers to communicate and make informed decisions based on the genetic information.

DPD Gene Mutations (5-FU toxicity) - (Dihydropyrimidine Dehydrogenase Gene Mutation)
₹ 13000
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  • 3KM from Banjara Hills
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  • 3KM from Madhura Nagar
  • 5KM from Shaikpet