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Abstract Breast cancer (BC) remains a global health concern, being the most common cancer amongst women in the world, and the second-leading cause of cancer related death. Triple-negative breast cancer (TNBC) represents a challenging frontier in oncology, characterized by its aggressiveness and its unique molecular profile devoid of the known receptors. Its elusiveness lies in the inherent heterogeneity within its subtypes, contributing to diverse clinical behaviours and treatment responses. TNBC has also shown elevated basal autophagy level as a pro-survival mechanism to make up for the increased nutrients demand mandated by the high K-RAS signalling. To tackle such tumour, we chose an autophagy blocker in addition to multi-kinase inhibitor. The combination index calculated for the proposed drugs has shown promising results in reduction of cell viability more than each drug separately. Selectivity index proved the safety of our doses on normal fibroblast cells in contrast to two breast cancer cell lines (MDA-MB 231 Part 1 (Regular Abstracts) ; 2024 Apr 5-10; San Diego, CA. Philadelphia (PA): AACR; Cancer Res 2024;84 (6Suppl): Abstract nr 4317.
Gamal et al. (Fri,) studied this question.
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