Final answer:
Age, history of blood clots, history of breast, liver, or endometrial cancer, and genetic factors are risk factors that can predict relapse/treatment failure in patients taking tamoxifen for breast cancer.
Step-by-step explanation:
There are several risk factors that can predict relapse/treatment failure in patients taking tamoxifen for breast cancer:
- Age: Older women who smoke have a higher risk of relapse/treatment failure.
- History of blood clots: Patients who have a prior history of blood clots are at an increased risk.
- History of breast, liver, or endometrial cancer: Patients who have previously had breast, liver, or endometrial cancer are more likely to experience relapse/treatment failure.
- Genetic factors: Certain mutant genes, such as BRCA1 and BRCA2, can greatly increase the risk of relapse/treatment failure.