The first group comprised mechanistic studies of miRNA methylation in special subtypes of NHL including NK-cell lymphoma (pertaining to miR-146a), gastric MALT lymphoma (miR-203), t(8;14)-negative BL (miR-9), and ALK-positive ALCL (miR-29a). The gene discussed is ALK; the disease is gastric mucosa-associated lymphoid tissue lymphoma.