GGH and gallbladder cancer: High levels of GGH mRNA expression are significantly correlated with more advanced histological type, vascular invasion, and poor survival rate compared to low GGH expression levels in cervical cancer, gallbladder cancer, and breast cancer (Shubbar et al., 2013; Odin et al., 2019; Peng et al., 2019; Zali et al., 2019; Maezawa et al., 2020).