Specifically, throughout the follow-up, the PFS rate of patients with low-risk GISTs in the primary site of the stomach was 96.86 %, which was higher than that of patients with non-gastric sites (89.01 %) (Fig. 2A) ; Furthermore, the PFS rate of low-risk GISTs with tumor size of 2-4 cm was 96.89%, and that of patients with low-risk GISTs with tumor ≥ 4 cm was 90.91% (Fig. 2B); Patients with low-risk GISTs with Ki67 ≤5% had a significantly higher PFS rate (97.03%) compared to patients with low-risk GISTs with Ki67 >5% (80.43%) (Fig. 2C). Here, MKI67 is linked to neoplasm.