A Phenylbutenoid Dimer, cis-3-(3′,4′-Dimethoxyphenyl)-4-[(E)-3′′′,4′′′-Dimethoxystyryl] Cyclohex-1-ene, Exhibits Apoptogenic Properties in T-Acute Lymphoblastic Leukemia Cells via Induction of p53-Independent Mitochondrial Signalling Pathway. This evidence concerns the gene TP53 and acute lymphoblastic leukemia.