In the present study, RT-PCR had shown four Bax isoforms α, d, Δ, and ζ. Interestingly, Bax d and Bax Δ had a much significant association in the tumor tissues than the other isoforms, which suggest that Bax d and Bax Δ may association with tumor progress and development. The gene discussed is BAX; the disease is neoplasm.