[TSG101 and breast cancer: a correctly named tumor-suppressor gene?]

In January 1997, PCR genomic analysis of the TSG101 gene showed frequent large intragenic deletions. The investigators used a small cohort of sporadic breast cancers. Li et al. proposed human TSG101 as a breast tumor suppressor gene. Since then, several teams have worked on large series of breast cancers, using a variety of techniques. They have shown that intragenic deletion, if it exists at all, is rare. Is TSG101 a tumor gene or an impostor?