The results revealed that among the genes that were differentially expressed between the highly curable B‐NHLs (DLBCL and BL) and the incurable MCL cells, glycosyltransferase 1 domain‐containing protein 1 (GLT1D1) was highly expressed in the MCL, which has the worst prognosis among the 3 subtypes of B‐cell NHLs (Fig. 1A). The gene discussed is GLT1D1; the disease is mantle cell lymphoma.