I have a list of about 1000 cancer cell lines with associated RNA-seq expression profiles per gene. I would like to be able to confirm that these cell lines have been verified or meet a standard that can be used in research since some cell lines can be contaminated or labeled incorrectly at some point. Is there a list of "verified" cancer cell lines somewhere? Or any advice on how to go about this? 
There is a [Register of Misidentified Cell Lines][1]:

> ICLAC curates a Register of cell lines that are known to be
> misidentified through cross-contamination or other mechanisms (e.g.,
> mislabelling).

It seems to be actively maintained as well (the last update was less than a month ago).

  [1]: http://iclac.org/databases/cross-contaminations/