This clinical trial aims to learn whether a brief psychological therapy called Brief Acceptance and Commitment Therapy (Brief-ACT) can improve the effectiveness of neoadjuvant chemotherapy in patients with locally advanced breast cancer. It will also examine how this therapy affects stress levels and certain blood markers related to inflammation and tumor growth. The main questions this study aims to answer are: Does Brief-ACT improve the rate of pathological complete response (pCR) after chemotherapy? Does Brief-ACT reduce levels of inflammatory and angiogenic biomarkers such as C-reactive protein (CRP), interleukin-6 (IL-6), neutrophil-to-lymphocyte ratio (NLR), and vascular endothelial growth factor (VEGF)? Does Brief-ACT reduce psychological stress in patients undergoing chemotherapy? Researchers will compare patients who receive Brief-ACT in addition to standard chemotherapy with those who receive standard chemotherapy alone to see if there are differences in treatment response, stress levels, and biomarker levels. Participants will: Receive neoadjuvant chemotherapy according to standard treatment protocols Be assigned to receive Brief-ACT sessions or no additional psychological intervention Attend regular clinic visits for treatment and monitoring Provide blood samples at specific time points for laboratory analysis Complete questionnaires to assess psychological stress
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Clinical response according to RECIST version 1.1
Timeframe: At the end of cycle 3 (each cycle is 21 days), prior to surgery
Vania Idelia Winantyo, MD, General Surgeon