Obesity-associated colorectal cancer and the association with chemokine signaling and tumor remodeling pathways.

194 Background: Obesity is a known risk factor for colorectal cancer (CRC) that promotes systemic inflammation and T-cell dysfunction, yet the specific characteristics of the tumor immune microenvironment (TIME) in this context are not well-defined. Furthermore, the landscape of genomic driver mutations exclusive to CRC patients with obesity remains poorly understood. Therefore, a comprehensive analysis is required to characterize the unique immunological and genomic features of CRC in patients with obesity, which could clarify mechanisms of tumor progression and lead to personalized therapeutic approach for this population. Methods: We performed a retrospective analysis using genomic and transcriptomic data from colorectal cancer (CRC) patients at our institution (RPCCC, N=107) stratified by body mass index (BMI) – Obesity (BMI ≥30), overweight (25≤ BMI