Table 1.

Comparison of Helicobacter pylori-positive and Helicobacter pylori-negative gastric mucosa-associated lymphoid tissue lymphomas

	H. pylori-positive	H. pylori-negative
Pathogenesis	H. pylori infection	Genetic alterations
		Other bacterial infection
		Autoimmune diseases
First-line therapy	Antibiotic therapy	Antibiotic therapy
Response rate for antibiotic therapy	75%	28%

H. pylori: Helicobacter pylori.