Why is this test performed?
Gene expression tests provide valuable information about the activity levels of certain genes in breast cancer cells. This analysis helps in predicting the likelihood of cancer recurrence, determining the aggressiveness of the cancer, and guiding treatment decisions. It assists healthcare providers in devising personalised treatment plans tailored to the individual's genetic makeup.
When should the analysis be done?
Gene expression analysis is typically performed after a breast cancer diagnosis to aid in treatment planning. It may also be utilised for prognostic purposes or to assess the risk of cancer recurrence. The timing of the analysis is determined by the healthcare provider based on the specific circumstances of the patient's diagnosis and treatment plan.
Should more than one gene expression test be performed at once?
It depends on the specific case and the recommendation of your doctor. In some situations, multiple gene expression tests may be ordered to gather comprehensive information about the genetic profile of the breast cancer. However, the necessity of performing more than one test simultaneously varies and should be determined by a doctor.
What sample is required?
The sample required for gene expression testing in breast cancer is usually obtained from a biopsy or surgical resection of the tumour tissue. This tissue sample contains the cancer cells whose genetic information will be analysed to determine gene expression patterns.
Is any prior preparation necessary?
Prior preparation is generally not necessary for the patient undergoing gene expression testing for breast cancer. However, it is essential to follow any specific instructions provided by the doctor regarding the biopsy procedure or surgical intervention to obtain the tissue sample.
What are the normal values?
The interpretation of gene expression test results in breast cancer is based on a comparison with established reference ranges or norms for the activity levels of specific genes. Normal values may vary depending on the specific test and the laboratory conducting the analysis.
Table of normal values:
|
Gene Name |
Normal Expression Level |
|---|---|
|
Gene A |
0.5 - 1.5 |
|
Gene B |
0.7 - 1.3 |
|
Gene C |
0.8 - 1.2 |
|
Gene D |
0.6 - 1.4 |
|
Gene E |
0.9 - 1.1 |
(Note: Values are indicative and may vary based on the specific gene expression test and laboratory standards.)
What does having altered values mean?
Altered values in gene expression tests for breast cancer indicate deviations from the normal activity levels of certain genes. These deviations may suggest a more aggressive tumour phenotype, increased risk of cancer recurrence, or potential resistance to certain treatments. However, the significance of altered values depends on various factors, including the specific genes involved, the patient's overall health status, and the stage of the cancer.