There are many. Personally I will read the NCCN recommendations and discussion section. They're updated frequently. UpToDate is another website I like.
I subscribe to Medscape oncology for cancer related news. Meetings are also a good way to stay up to date with what's new. Read by QxMD is an app I use to keep up with what's being published in my field.
Path resident checking in. Would you consider doing a genetic panel similar to the recent work from the Cancer Genome Atlas project's recently reported classification for lower-grade gliomas?
A) find out who at your institution is already involved,
B) contact the IRB or clinical investigations department, they probably need to verify their institutional existence and will then have a list of whichever investigators they have vouched for.