Worth getting your BRAF status re-checked over time

This was a very interesting poster at this morning's poster session- the scientist rechecked the BRAF status of patients in the original tumor, lymph nodes, liver mets and the blood and it turned out that tumours in the same patient could be both BRAF positive and negative.
They hadn't tested many patients yet, but interesting there were 2 patients who were BRAF positive in the original tumor, lymph nodes and blood but NOT in the liver.

This means that if you are BRAF negative at onset, it is worth to recheck the status later and if you want to pass this on to your oncologist, the reference to the poster is here:

Abstract 9017, ASCO 2014

http://abstracts.asco.org/144/AbstView_144_132370.html