LUM and cancer: As shown in Figure 4b, five out of seven (71.4%) cancer cell lines—KYSE30, KYSE70, KYSE150, KYSE510, and SLMT1—showed a higher relative expression level of Lumican than NE3; one cancer cell line, HKESC3 [34], showed a lower relative expression level of Lumican than NE3; while one cancer cell line, KYSE450, showed no significant difference of relative Lumican expression compared with NE3.