Prognostic role of sodium levels in colorectal cancer patients receiving aflibercept plus FOLFIRI.

Aim: To investigate the impact of natremia in metastatic colorectal cancer (mCRC) patients treated with aflibercept plus folinic acid, 5-fluorouracil, oxaliplatin and irinotecan (FOLFIRI). Patients & methods: A total of 84 mCRC patients receiving aflibercept plus FOLFIRI as second-line treatment were enrolled and divided into two groups based on their median sodium value. Progression-free survival and overall survival were analyzed. Results: Patients with sodium levels ≥140 mEq/l had significantly longer median progression-free survival (4.1 vs 2 months; p < 0.01) and median overall survival (12 vs 7.3 months; p < 0.01) compared with those with lower levels. Conclusion: This study suggests that higher pretreatment serum sodium levels are associated with improved outcomes in mCRC patients receiving aflibercept and FOLFIRI, potentially serving as a prognostic marker to aid treatment management.