Do I need genetic testing while taking bosutinib? What is the role and necessity of genetic testing?

Related genetic testing is often required before treatment with Bosutinib (Bosutinib), especially in patients with chronic myelogenous leukemia (CML). Bosutinib is a second-generation BCR-ABLtyrosine kinase inhibitor (TKI), mainly used to treat patients with chronic myelogenous leukemia who are refractory to or intolerant to other TKI treatments. Conducting BCR-ABL gene fusion testing before treatment is a key step in confirming CML and is also an important basis for determining whether bosutinib treatment is suitable.

Genetic testing is not only used to confirm the diagnosis during treatment, but also to identify whether patients have specific drug-resistant mutations. CMLAfter patients have been treated with TKI drugs for a period of time, mutations in the Abl kinase region may occur. These mutations may lead to resistance to certain TKI drugs. Through gene sequencing, we can find out whether there are mutations such as T315I that are resistant to multiple TKIs (including bosutinib), thereby guiding doctors to choose the most appropriate treatment plan and avoid ineffective treatments.

Additionally, genetic testing can be used to dynamically assess treatment response. During bosutinib treatment, regular monitoring of the expression level of the BCR-ABL fusion gene (such as qPCR testing) can reflect the control of the disease and help doctors judge whether the drug continues to be effective. If the level of the fusion gene is detected not to decrease or to increase again, it may mean disease recurrence or drug resistance, and treatment strategies need to be adjusted in a timely manner.

In summary, genetic testing is of great significance before and during treatment with bosutinib. It not only helps confirm whether the condition meets the indications, but also predicts drug efficacy, assesses the risk of drug resistance, and provides data support for personalized treatment. For CML patients, a standardized genetic testing process is the basis for achieving precise treatment, improving treatment success rate and prolonging survival.

Reference materials:https://go.drugbank.com/drugs/DB06616