CD79A and dyspepsia: Six other studies investigated the seroprevalence of specific antibodies against Anisakis in patients with digestive system disorders (dyspepsia, appendicits/appendectomized, digestive haemorrage, gastric neoplasms), ranging from 1.3% positive to IgA (Andreu-Ballester JC 2008) [60] to 75.4% for IgG (Gutiérrez R 2002) [32].