ABL1 and MALT lymphoma: This was biologically relevant, as miR-203 expression was inversely related to the expression of the miR-203 target gene ABL1. Furthermore, miR-203 was unmethylated in normal tonsil, minimally methylated in gastritis tissue, but completely methylated in gastric MALT or DLBCL of stomach, which was derived from transformation of MALT lymphoma.