LAUSR

Triple-negative breast cancer (TNBC) is a heterogeneous disease that remains currently medically incurable. We comprehensively analyzed clinical, proteomic, and metabolomic data of a cohort of 12 highly selected primary TNBCs. Among them, 7 patients after neoadjuvant chemotherapy had residual disease and micro- or macro-metastases that were non-pathologically complete response (non-pCR); 5 patients had pathologically complete response (pCR). Interestingly, both proteomic and metabolic profiling results revealed dramatically different molecular signatures in non-pCR relative to pCR. Non-pCR were enriched in metabolites involving aspartic acid, fumarate, nicotinamide, and adenosine that are critical intermediates for nitrogen recycling and tricarboxylic acid (TCA) cycle, which are essential fuels for tumor biomass. Moreover, non-pCR were enriched in urea cycle, oxidative phosphorylation, glycolysis, sirtuin signaling, nucleotide De Novo biosynthesis, which are resistance-associated. Putative therapeutic targets were identified in non-pCR patients. Collectively, our multiomics analysis demonstrated the heterogeneity of TNBCs at multi-levels and enabled the development of personalized therapies targeting unique tumor metabolic profiles. Citation Format: Zuen Ren, Kiran Kurmi, Robert Morris, Shakchhi Joshi, Eric Zaniewski, Johannes Kreuzer, Gabrielle Elena Gioia, Wilhelm Haas, Marcia C. Haigis, Leif W. Ellisen. Multiomics analysis of triple negative breast cancer identifies potential metabolic vulnerability for overcoming the resistance of neoadjuvant therapy. [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 3680.