Breast Cancer Subtypes and Treatment Outcomes
Author Information
Author(s): Kao Kuo-Jang, Chang Kai-Ming, Hsu Hui-Chi, Huang Andrew T
Primary Institution: Koo Foundation SYS Cancer Center
Hypothesis
Can breast cancer molecular subtyping based on global intrinsic biology be used for treatment customization?
Conclusion
The molecular subtypes established in this study can be utilized for customization of breast cancer treatment.
Supporting Evidence
- Six molecular subtypes of breast cancer were identified with distinctive characteristics.
- Subtype I was concordant with the chemosensitive basal-like intrinsic type.
- Adjuvant chemotherapy did not provide survival benefits for early-stage subtype V patients.
Takeaway
This study found that breast cancer can be divided into six different types, and each type may need different treatments to work best.
Methodology
Gene expression profiling was conducted on fresh frozen breast cancer tissue collected from 327 patients, and statistical analysis was performed to correlate molecular subtypes with survival outcomes and chemotherapy regimens.
Limitations
The small sample size for some subtypes limited the ability to draw firm conclusions regarding survival.
Participant Demographics
{"age":{"under_50":197,"over_50":115},"treatment_year":{"before_1997":125,"after_1997":187},"tnm_stage":{"I":67,"II":139,"III":98,"IV":8}}
Statistical Information
P-Value
p = 2 × 10-5
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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