Breast cancer (non-metastatic)

Area of Science:

• Oncology
• Clinical Medicine
• Evidence-Based Practice

Background:

• Breast cancer impacts at least 1 in 10 UK women.
• Most cases present as primary operable disease with an 80% 5-year survival rate.
• Systematic reviews are crucial for understanding treatment efficacy and safety.

Purpose of the Study:

• To systematically review interventions for ductal carcinoma in situ after breast-conserving surgery.
• To evaluate treatments for primary operable breast cancer.
• To assess interventions for locally advanced breast cancer (stage 3B).

Main Methods:

• Conducted a systematic literature search across major databases (Medline, Embase, Cochrane Library) up to April 2009.
• Included harms alerts from regulatory agencies (FDA, MHRA).
• Included 83 systematic reviews, RCTs, and observational studies meeting inclusion criteria.

Main Results:

• Evaluated the quality of evidence using the GRADE system.
• Synthesized data on a wide range of interventions.
• Identified studies meeting inclusion criteria for effectiveness and safety analysis.

Conclusions:

• Presents information on the effectiveness and safety of numerous breast cancer interventions.
• Covers treatments including chemotherapy, hormonal therapy, radiotherapy, and surgical techniques.
• Provides a comprehensive overview of evidence for various breast cancer treatment modalities.