Effectiveness And Safety Profile of Platinum and Non-Platinum-Based Chemotherapy Drugs in Triple Negative Breast Cancer Patients at Bethesda Hospital Yogyakarta
Rommy, drh. Retno Murwanti, M.P., Ph.D.; Prof. apt. Agung Endro Nugroho, M.Si, Ph.D.
2024 | Tesis | S2 Mag.Farmasi Klinik
Background: Triple negative breast cancer (TNBC) is considered to be the most lethal of all types of breast cancer, with 40% of mortality during first 5 years of therapy. Some studies have provided data on overall survival, recurrence free survival and adverse drug reactions (ADR) from select chemotherapy agents, but limited data is available for patients specifically diagnosed with TNBC.
Purpose: The purpose of this study is to determine the efficacy and safety profile of platinum based and non-platinum-based chemotherapy on TNBC patients.
Method: This is an analytical study with using retrospective cohort as its design. Patient criteria is female aged 18 – 65 years old diagnosed with TNBC who conforms to the inclusion criteria. Chemotherapy used by the patients were divided into two groups, namely platinum-based and non-platinum-based chemotherapy. A total of 50 samples were obtained, which is classified into two groups: 24 (48%) patients were grouped in platinum-based chemotherapy group, 26 (52%) patients were grouped in non-platinum-based chemotherapy group. Descriptive analysis is used to analyze basic patient characteristics; Kaplan Meier survival curve is used to analyze overall survival (OS) and recurrent free survival (RFS). Patients are followed up to 4 years for OS and RS. Multivariate analysis is carried out using cox proportional hazard regression for both OS and RFS.
Results: Mean age for patients were 48.4 (range 29 – 65). There were significant differences between platinum-based chemotherapy OS (Mean 43 months, 95% CI 39-46 months) compared to non-platinum-based chemotherapy OS (Mean 38 months, 95% CI 34 – 41 months) (HR 0.344 vs HR 0.955, p=0.036). Significant differences are also found in RFS between platinum-based chemotherapy group (Mean 44.7 months (95% CI 39.41 – 43.88) compared to non-platinum-based chemotherapy group (Mean 38 months (95% CI 35-42 months) (HR 0.594 vs HR 1.625, p=0.002). Multivariate analysis found that both OS and RFS are affected by the rate of metastasis (HR 18.677, 95% CI 4.005 – 87.089; p<0 CINV=11; alopecia=1; transaminases=2, disorders=5; disorders=10; disorders=4).>
Conclusion: Patients treated with platinum-based chemotherapy have statistically longer OS and RFS compared to non-platinum-based chemotherapy patients. There were 17 patients from platinum-based and 16 patients from non-platinum-based chemotherapy who experienced adverse drug reaction.
Kata Kunci : Triple negative breast cancer; safety; adverse drug reactions