This family consists of several ICEA proteins from Helicobacter pylori. Helicobacter pylori infection causes gastritis and peptic ulcer disease, and is classified as a definite carcinogen of gastric cancer. ICEA1 is speculated to be associated with peptic ulcer disease [1].

1: Distribution of distinct vacA, cagA and iceA alleles in Helicobacter pylori in Hong Kong. Wong BC, Yin Y, Berg DE, Xia HH, Zhang JZ, Wang WH, Wong WM, Huang XR, Tang VS, Lam SK; Helicobacter 2001;6:317-324. PMID:11843964