If for the clinical information, you mean the cancer type than you can do this using the Cellosaurus. You can parse the XML version available at ftp://ftp.expasy.org/databases/cellosaurus and look for cell lines in CCLE which you can do be either taking all cell lines with:
<comment category="Part of"> Cancer Cell Line Encyclopedia (CCLE) project </comment>
or with an Xref to the CCLE as shown in this example:
In term of "race", the next release of the Cellosaurus (release 30 in May 2019) will contain a new "section" called "Genome ancestry" which will contain the computed genome ancestry information from the ECLA resource which just became available:
It doesn't look like they had any individuals with ambiguous ancestry (which seems odd to me), but I don't doubt the over-representation of European ancestry individuals.
However, I was also a little confused because it seems like the predicted ancestries are missing from Table S2 and/or I couldn't find an "Interactive" web-interface for the results. Perhaps somebody else could find what I may have over-looked?