Genetic polymorphisms of metabolic enzymes may influence the metabolism of Doxorubicin-Cyclophosphamide regimen in breast cancer patients. the investigators want to 1. evaluate the frequency or incidence of the genetic polymorphisms of CYP2C19 and ALDH3A1 in breast cancer patients, and 2. analyze the association between the genetic polymorphisms of CYP2C19 and ALDH3A1 and toxicities in breast cancer patients treated by Doxorubicin-Cyclophosphamide regimen therapy.
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The frequency of the genetic polymorphisms of CYP2C19 in breast cancer patients
Timeframe: Up to 24 weeks
The frequency of the genetic polymorphisms of ALDH3A1 in breast cancer patients
Timeframe: Up to 24 weeks