EIF4E and liposarcoma: Similarly, the impaired expression of both eIF4E and eIF2 in liposarcomas of CombitTA-FUS-DDIT3 mice was normalized following administration of tetracycline (4 gr/L in the drinking water for 2 weeks) (Figure 6A), indicating that the fusion protein is directly responsible for the overexpression of both eIF4E and eIF2 in liposarcoma.