SHPRH and neoplasm: Three eligible published studies about circ-SHPRH were enrolled based on their tumor diagnosis aspect (Qin et al., 2016; Li et al., 2017; Ji et al., 2018), 7 eligible published studies were related to overall survival (OS) (Zhang M. et al., 2018; Wang Y. et al., 2018; Zhang X. et al., 2018; Jiang et al., 2018; Liu et al., 2018; Xing et al., 2018; Xu et al., 2018; Zuo et al., 2022), and 3 eligible published studies were related to tumor grade (Jiang et al., 2018; Liu et al., 2018; Xu et al., 2018).