The Demographic Profile of Colorectal Cancer Patients in Indonesia: Insights from a Single Center Experience and Exploration of Immune Response and Survival Outcomes.

BACKGROUND: Understanding the demographics, tumor characteristics, mutations, and immune scores in colorectal cancer (CRC) patients may aid in tailoring treatment and predicting survival. METHODS: This retrospective cohort study assessed clinical parameters, immune scores, and their relationship with survival in patients with CRC. RESULTS: The study included 74 patients, mean age 53.7 years, mostly male (53.3%) and aged 41-70 (77.3%). Common comorbidities included cardiovascular diseases (29.3%) and hypertension (21.3%). Adenocarcinoma accounts for 74% of CRC cases, with 73% of CRCs affecting the colon. KRAS mutations and Microsatellite instability-High (MSI-H)/deficient mismatch repair (dMMR) were found in 1.3% and 16% of patients, respectively. Stage IV (77.3%) and liver metastases (52.7%) were prevalent. Immune score was influenced by cancer stage (p = 0.04) and metastasis (p=0.05). The immune score was not associated with survival (p = 0.181). Patients with comorbidities had lower one- (p = 0.027) and two-year survival rates (p = 0.037) survival rates. Cardiovascular comorbidities negatively impacted one-year survival (p = 0.047) and two-year survival (p = 0.037). The mean survival time was shorter for males (2.047±0.288 vs. 2.781±0.195 years, p = 0.041), patients with comorbidities (1.772±0.371 vs. 2.702±0.188 years, p = 0.017), and cardiovascular comorbidities (1.558±0.316 vs. 2.685±0.207 years, p = 0.038). Comorbidities (unadjusted hazard ratio [HR] 2.948, p = 0.023) and cardiovascular comorbidities (unadjusted HR 2.695, p = 0.046) were initially associated with survival but lost significance after adjusting for confounding variables. CONCLUSIONS: This study provides insights into CRC patient demographics and their interplay with the immune score and survival.