I asked several oncologists about the K-ras gene testing for HNSCC, like it's done for colon cancer, and was told it's not done, and doesn't apply. I only read about the 5 percent factor here before I started Erbitux, which was interesting, and was sort of happy when the oncologist wanted do small dose Taxotere in addition. I can't get most other chemos due my kidney disease, underlying medical conditions, and bad chemo reaction to Taxotere, Cisplatin, 5-FU in '09, so I settled to do Erbitux for recurrent metatastic cancer with prior cisplatin failure.