Helicobacter pylori is a microaerophilic, gram-negative bacterium that colonizes the gastric mucosa of approximately 50% of the world's population, and is a primary pathogenic factor in benign and malignant gastroduodenal disease (Warren and Marshall, 1983; Blaser and Parsonnet, 1994). Tomb et al. (1997) reported the complete sequence of the circular genome of H. pylori. The 1,667,867-bp genome contains 1,590 predicted coding sequences (genes). Sequence analysis of these genes indicated that the organism has systems for motility, for scavenging iron, and for DNA restriction and modification. Its survival in acid conditions depends, in part, on its ability to establish a positive inside-membrane potential in low pH.

Immunodeficiency-58 (IMD58) is an autosomal recessive primary immunologic disorder characterized by early-onset skin lesions, including eczematous dermatitis, infectious abscesses, and warts, recurrent respiratory infections or allergies, and chronic persistent infections with candida, Molluscum contagiosum, mycobacteria, EBV, bacteria, and viruses. Some patients may have gastrointestinal involvement, including inflammatory bowel disease, EBV+ smooth muscle tumors, and esophagitis. Immunologic analysis shows defective T-cell function with decreased Treg cells and deficient CD3/CD28 costimulation responses in both CD4+ and CD8+ T cells. B-cell function may also be impaired (summary by Wang et al., 2016 and Alazami et al., 2018).