COMPARATIVE ANALYSIS OF TREATMENT OUTCOMES IN TRIPLE-NEGATIVE VS. HER2- POSITIVE BREAST CANCER PATIENTS.

Background: This study aims to compare treatment outcomes in patients with Triple-Negative Breast Cancer (TNBC) and HER2-Positive Breast Cancer, evaluating clinical responses, survival rates, recurrence rates, quality of life (QoL), and adverse events. Materials and Methods: A total of 100 female patients were included, with 50 diagnosed with TNBC and 50 with HER2-Positive Breast Cancer. Data on demographics, treatment regimens, clinical outcomes, survival rates, recurrence rates, QoL scores, and adverse events were collected and analyzed. Results: Mean age was 52.3 ± 9.7 years for TNBC and 54.1 ± 10.2 years for HER2-Positive patients. Surgery was performed in 90% of TNBC and 85% of HER2-Positive patients. Chemotherapy was administered to all patients. Radiation therapy was given to 60% of TNBC and 65% of HER2-Positive patients. Targeted therapy was administered to 10% of TNBC and 95% of HER2-Positive patients. Complete response rates were 20% for TNBC and 35% for HER2-Positive patients. Partial response rates were 40% for TNBC and 45% for HER2-Positive patients. Progressive disease occurred in 15% of TNBC and 10% of HER2-Positive patients. Survival rates at various time points are provided in Table 4. The 1-year overall survival (OS) rate was 80% (40 patients) for TNBC and 90% (45 patients) for HER2-Positive patients. The 2-year OS was 60% (30 patients) for TNBC and 75% (38 patients) for HER2- Positive patients. Local recurrence was 30% for TNBC and 20% for HER2- Positive patients. Distant metastasis occurred in 40% of TNBC and 25% of HER2-Positive patients. Grade 3-4 neutropenia was reported in 25% of TNBC and 20% of HER2-Positive patients. Cardiotoxicity was observed in 5% of TNBC and 10% of HER2-Positive patients. Conclusion: HER2-Positive patients exhibited better clinical outcomes and survival rates than TNBC patients but had a higher incidence of cardiotoxicity. These findings underscore the need for tailored treatment approaches and vigilant monitoring of adverse events. [ABSTRACT FROM AUTHOR]