HP and cancer: However, more sensitive molecular methods detect Hp in about half of tumors (Tang et al, 2005; Cristescu et al, 2015; Talarico et al, 2018), and eradication of Hp combined with tumor resection helps prevent tumor recurrence (Choi et al, 2018), suggesting that Hp may promote the later stages of metaplasia and cancer development in at least some individuals.