SLC7A11 and gastric cancer: Analyses have revealed that CD44v9-positive tumors are associated with significantly lower recurrence-free survival rates compared to CD44v9-negative tumors, suggesting that CD44v9 may serve as a potential predictive marker for gastric cancer recurrence.26 Studies using a transgenic mouse model of gastric cancer (Gan mouse) have demonstrated that CD44v stabilizes SLC7A11, a key factor in resistance to oxidative stress.