TP73 and medulloblastoma: We have determined that primary medulloblastoma specimens and cell lines overexpress full-length TAp73 and the amino-terminal truncated variants of TP73 (ΔNp73, ΔN'p73, ΔEx2p73, and ΔEx2/3p73) at levels in excess of those found in fetal brain and normal adult cerebellum.