S100A8 and MALT lymphoma: In addition, the prevalence of serum anti-CagA antibody was higher (p < 0.05) in patients with gastric diffuse large B cell lymphoma (75%, 12/16) than those with low-grade MALToma (44.8%, 13/29) and non-ulcer dyspepsia (43.1%, 22/53) [53].