Consistent with this finding, the percentage of CNE-2 NPC cells in G2/M-phase was 21.25 ± 1.06% or 33.12 ± 1.58% after overexpression of Notch2 alone or radiotherapy alone, respectively, whereas the percentage increased to 73.01 ± 4.26% in CNE-2 NPC cells overexpressing of Notch2 and subject to radiotherapy (Figure 3(b)). This evidence concerns the gene NOTCH2 and nasopharyngeal carcinoma.