janekai

That is true. Lots of tumor biomarkers have been identified so far. Few is used for practical diagnosis purpose.

There is a paper directly linked to this published in 2009. See the following link. http://www.pnas.org/content/106/50/21288.full The time HSP90alpha was discovered is very likely before 2009. However, to study it as a tumor marker is a different story. A good question raised. I can see you have a biased brain in your head.