Chapter ONE

1.1 Introduction
1.2 Background of Study
1.3 Problem Statement
1.4 Objective of Study
1.5 Limitation of Study
1.6 Scope of Study
1.7 Significance of Study
1.8 Structure of the Research
1.9 Definition of Terms

Chapter TWO

2.1 Overview of Estrogen Receptor β
2.2 Role of Estrogen Receptor β in Breast Cancer
2.3 Gene Expression Regulation by Estrogen Receptor β
2.4 Cellular Signaling Pathways Involving Estrogen Receptor β
2.5 Therapeutic Targeting of Estrogen Receptor β in Breast Cancer
2.6 Clinical Implications of Estrogen Receptor β in Breast Cancer
2.7 Studies on Estrogen Receptor β and Breast Cancer
2.8 Emerging Research and Future Directions
2.9 Comparative Studies with Other Receptors
2.10 Summary of Literature Review

Chapter THREE

3.1 Research Design and Methodology
3.2 Selection of Sample Population
3.3 Data Collection Techniques
3.4 Data Analysis Methods
3.5 Experimental Procedures
3.6 Ethical Considerations
3.7 Validation of Research Instruments
3.8 Statistical Tools and Software Used

Chapter FOUR

4.1 Overview of Research Findings
4.2 Estrogen Receptor β Expression in Breast Cancer Patients
4.3 Correlation between Estrogen Receptor β Levels and Disease Progression
4.4 Response to Estrogen Receptor β Targeted Therapy
4.5 Impact of Estrogen Receptor β Mutations on Treatment Outcomes
4.6 Comparison with Estrogen Receptor α in Breast Cancer
4.7 Discussion on Conflicting Studies
4.8 Implications of Findings on Clinical Practice

Chapter FIVE

5.1 Conclusion and Summary
5.2 Key Findings Recapitulation
5.3 Research Objectives Achievement
5.4 Contributions to Existing Knowledge
5.5 Recommendations for Future Research