FANCD2 and head and neck neoplasm: On the fancD2-sufficient background, K14E6E7/FancD2+/+ mice developed an increased number of overt head and neck tumors compared to K14E7/FancD2+/+ mice (Table 1), consistent with our prior studies demonstrating an ability of E6 to augment the efficiency of E7-driven head and neck tumorigenesis [25].